@@ 1,6 1,5 @@
 #pragma once
 
-#include "../abstract.h"
 #include "viewport.h"
 
 void Dither(Viewport *frame);

@@ 2,6 2,7 @@
 
 #include "camera.h"
 #include "clip.h"
+#include "dither.h"
 #include "mesh.h"
 #include "model.h"
 #include "obj.h"

@@ 1,7 0,0 @@
-#pragma once
-
-#include "3d/abstract.h"
-#include "3d/device.h"
-#include "3d/image.h"
-#include "3d/world.h"
-#include "3d/render.h"

@@ 1,9 0,0 @@
-#pragma once
-
-#include "abstract/aabbox.h"
-#include "abstract/color.h"
-#include "abstract/plane.h"
-#include "abstract/point.h"
-#include "abstract/polygon.h"
-#include "abstract/transform.h"
-#include "abstract/vertex.h"

@@ 1,53 0,0 @@
-#include "aabbox.h"
-#include <stdio.h>
-#include <stdlib.h>
-
-AABBox *NewAABBox(double left, double right, double bottom, double top,
-		double far, double near)
-{
-	AABBox *v = malloc(sizeof(AABBox));
-	v->left = left;
-	v->right = right;
-	v->bottom = bottom;
-	v->top = top;
-	v->far = far;
-	v->near = near;
-	return v;
-}
-
-AABBox Vol(double left, double right, double bottom, double top, double far, double near)
-{
-	AABBox v = { left, right, bottom, top, near, far };
-	return v;
-}
-
-AABBox *FromAABBox(AABBox *volume, Transform transform)
-{
-	AABBox *newAABBox;
-	Vertex rightTopNear = V(
-			volume->right,
-			volume->top,
-			volume->near);
-	Vertex leftBottomFar = V(
-			volume->left,
-			volume->bottom,
-			volume->far);
-
-	CommitTransform(transform, &rightTopNear);
-	CommitTransform(transform, &leftBottomFar);
-
-	newAABBox = NewAABBox(
-			leftBottomFar.x,
-			rightTopNear.x,
-			leftBottomFar.y,
-			rightTopNear.y,
-			leftBottomFar.z,
-			rightTopNear.z);
-	return newAABBox;
-}
-
-void PrintAABBox(AABBox V)
-{
-	printf("           %- 6.2f\n         ┌────────┐\n      ┌──┴─────┐ ─┼──%- 6.2f\n      │        │  │%- 6.2f\n%- 6.2f│%- 6.2f  │  │\n      │        ├──┘\n      └────────┘\n        %- 6.2f\n\n",
-		V.top, V.far, V.right, V.left, V.near, V.bottom);
-}

@@ 1,18 0,0 @@
-#pragma once
-
-#include "transform.h"
-
-// "Axis-Aligned Bounding Box"
-typedef struct AABBox {
-	double left;
-	double right;
-	double bottom;
-	double top;
-	double near;
-	double far;
-} AABBox;
-
-AABBox *NewAABBox(double left, double right, double bottom, double top, double far, double near);
-AABBox Vol(double left, double right, double bottom, double top, double far, double near);
-AABBox *FromAABBox(AABBox *volume, Transform transform);
-void PrintAABBox(AABBox vol);

@@ 1,15 0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-typedef double Color;
-typedef uint32_t Pixel;
-
-#define BLACK	0.0
-#define WHITE	1.0
-#define GRAY	0.5
-#define LT_GRAY 0.67
-#define DK_GRAY 0.33
-
-#define ColorPixel(X) (0xFF000000 | ((uint32_t)((X)*0xFF) << 16) | ((uint32_t)((X)*0xFF) << 8) | (uint32_t)((X)*0xFF))
-#define PixelColor(X) ((double)((X) & 0x000000FF) / (double)0xFF)

@@ 1,9 0,0 @@
-#include "plane.h"
-
-Plane Pl(Vertex ref, Vector normal)
-{
-	Plane p;
-	p.ref = ref;
-	p.normal = normal;
-	return p;
-}

@@ 1,10 0,0 @@
-#pragma once
-
-#include "vertex.h"
-
-typedef struct Plane {
-	Vertex ref;
-	Vector normal;
-} Plane;
-
-Plane Pl(Vertex ref, Vector normal);

@@ 1,10 0,0 @@
-#include "point.h"
-#include <stdlib.h>
-
-Point *NewPoint(Vector position, Color color)
-{
-	Point *p = malloc(sizeof(Point));
-	p->position = position;
-	p->color = color;
-	return p;
-}

@@ 1,11 0,0 @@
-#pragma once
-
-#include "vertex.h"
-#include "color.h"
-
-typedef struct Point {
-	Vector position;
-	Color color;
-} Point;
-
-Point *NewPoint(Vector position, Color color);

@@ 1,152 0,0 @@
-#include "polygon.h"
-#include "../../arraylist.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-
-Polygon *NewPolygon(void)
-{
-  Polygon *p = malloc(sizeof(Polygon));
-  p->vertices = NULL;
-  p->vList = NULL;
-  return p;
-}
-
-void AddVertex(Polygon *polygon, Vertex *vertex)
-{
-  vIndex vi = FindVertex(polygon->vertices, vertex);
-  if (vi == VERTEX_NOT_FOUND) {
-    vi = list_count(polygon->vertices);
-    list_push(polygon->vertices, vertex);
-  }
-  list_push(polygon->vList, vi);
-}
-
-Polygon *FromPolygon(Polygon *polygon, Transform transform)
-{
-  Polygon *newPoly = NewPolygon();
-  int i;
-  Vertex *newVert;
-
-  // transform all the polygon's vertices
-  for (i = 0; i < NumVertices(polygon); i++) {
-    newVert = NewVertex(0, 0, 0);
-    *newVert = ApplyTransform(transform, *PolygonVertex(polygon, i));
-    list_push(newPoly->vList, list_count(newPoly->vertices));
-    list_push(newPoly->vertices, newVert);
-  }
-
-  return newPoly;
-}
-
-Polygon *CopyPolygon(Polygon *polygon)
-{
-  Polygon *newPoly = NewPolygon();
-  int i;
-  Vertex *newVert;
-
-  // transform all the polygon's vertices
-  for (i = 0; i < NumVertices(polygon); i++) {
-    newVert = NewVertex(0, 0, 0);
-    *newVert = *PolygonVertex(polygon, i);
-    list_push(newPoly->vList, list_count(newPoly->vertices));
-    list_push(newPoly->vertices, newVert);
-  }
-
-  return newPoly;
-}
-
-Vertex *PolygonVertex(Polygon *polygon, int i)
-/* returns the ith vertex in a polygon */
-{
-  int index = i % NumVertices(polygon);
-  return polygon->vertices[polygon->vList[index]];
-}
-
-Vector PolygonCenter(Polygon *polygon)
-{
-  double x = 0, y = 0, z = 0;
-  int n = NumVertices(polygon);
-  for (int i = 0; i < n; i++) {
-    Vertex *v = PolygonVertex(polygon, i);
-    x += v->x;
-    y += v->y;
-    z += v->z;
-  }
-
-  return V(x/n, y/n, z/n);
-}
-
-int NumVertices(Polygon *polygon)
-{
-  return list_count(polygon->vList);
-}
-
-Vector PolygonNormal(Polygon *polygon)
-{
-  assert(NumVertices(polygon) >= 3);
-  Vertex a = Homogenize(*PolygonVertex(polygon, 0));
-  Vertex b = Homogenize(*PolygonVertex(polygon, 1));
-  Vertex c = Homogenize(*PolygonVertex(polygon, 2));
-  Vector n = NormalizeVector(CrossProd(VecSub(b, a), VecSub(c, b)));
-  return n;
-}
-
-void HomogenizePolygon(Polygon *polygon)
-{
-  for (int i = 0; i < NumVertices(polygon); i++) {
-    Vertex *v = PolygonVertex(polygon, i);
-    *v = Homogenize(*v);
-  }
-}
-
-Polygon **Triangularize(Polygon *polygon)
-{
-  Polygon **triangles = NULL;
-
-  if (NumVertices(polygon) < 3) {
-    return NULL;
-  } else if (NumVertices(polygon) == 3) {
-    list_push(triangles, polygon);
-  } else {
-    Vertex *a = PolygonVertex(polygon, 0);
-    for (int i = 1; i < NumVertices(polygon) - 1; i++) {
-      Vertex *b = PolygonVertex(polygon, i);
-      Vertex *c = PolygonVertex(polygon, i + 1);
-      Polygon *tri = NewPolygon();
-      AddVertex(tri, a);
-      AddVertex(tri, b);
-      AddVertex(tri, c);
-      list_push(triangles, tri);
-    }
-  }
-
-  return triangles;
-}
-
-bool IsTriangle(Polygon *polygon)
-{
-  return NumVertices(polygon) == 3;
-}
-
-void FreePolygon(Polygon *p)
-{
-  int i;
-  for (i = 0; i < list_count(p->vertices); i++) {
-    free(p->vertices[i]);
-  }
-  list_free(p->vertices);
-  list_free(p->vList);
-  free(p);
-}
-
-void PrintPolygon(Polygon *polygon)
-{
-	int i;
-	Vertex *v;
-	printf("%d-gon:\n", NumVertices(polygon));
-	for (i = 0; i < NumVertices(polygon); i++) {
-		v = PolygonVertex(polygon, i);
-		PrintVec(*v);
-	}
-}

@@ 1,25 0,0 @@
-#pragma once
-
-#include "vertex.h"
-#include "transform.h"
-#include <stdbool.h>
-
-typedef struct Polygon {
-	vIndex *vList;		// list of indices into vertices of polygon vertices, CCW order
-	Vertex **vertices;	// list of possible vertices in polygon
-} Polygon;
-
-Polygon *NewPolygon();
-void AddVertex(Polygon *polygon, Vertex *vertex);
-Polygon *FromPolygon(Polygon *polygon, Transform transform);
-Polygon *CopyPolygon(Polygon *polygon);
-Vertex *PolygonVertex(Polygon *polygon, int i);
-Vector PolygonCenter(Polygon *polygon);
-int NumVertices(Polygon *polygon);
-Vector PolygonNormal(Polygon *polygon);
-void HomogenizePolygon(Polygon *polygon);
-Polygon **Triangularize(Polygon *polygon);
-bool IsTriangle(Polygon *polygon);
-void FreePolygon(Polygon *p);
-
-void PrintPolygon(Polygon *polygon);

@@ 1,251 0,0 @@
-#include "transform.h"
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <stdio.h>
-
-Transform Identity(void)
-{
-	Transform t;
-	SetIdentity(&t);
-	return t;
-}
-
-void SetIdentity(Transform *m)
-{
-	m->m[0][0] = 1;
-	m->m[0][1] = 0;
-	m->m[0][2] = 0;
-	m->m[0][3] = 0;
-
-	m->m[1][0] = 0;
-	m->m[1][1] = 1;
-	m->m[1][2] = 0;
-	m->m[1][3] = 0;
-
-	m->m[2][0] = 0;
-	m->m[2][1] = 0;
-	m->m[2][2] = 1;
-	m->m[2][3] = 0;
-
-	m->m[3][0] = 0;
-	m->m[3][1] = 0;
-	m->m[3][2] = 0;
-	m->m[3][3] = 1;
-}
-
-bool IsIdentity(Transform t)
-{
-	return
-	t.m[0][0] == 1 && t.m[0][1] == 0 && t.m[0][2] == 0 && t.m[0][3] == 0 &&
-	t.m[1][0] == 0 && t.m[1][1] == 1 && t.m[1][2] == 0 && t.m[1][3] == 0 &&
-	t.m[2][0] == 0 && t.m[2][1] == 0 && t.m[2][2] == 1 && t.m[2][3] == 0 &&
-	t.m[3][0] == 0 && t.m[3][1] == 0 && t.m[3][2] == 0 && t.m[3][3] == 1;
-}
-
-Transform *NewTransform(void)
-{
-	Transform *t = malloc(sizeof(Transform));
-	SetIdentity(t);
-	return t;
-}
-
-Transform FromTransform(Transform transform)
-{
-	int i, j;
-	Transform newTransform = Identity();
-	for (i = 0; i < 4; i++) {
-		for (j = 0; j < 4; j++) {
-			newTransform.m[i][j] = transform.m[i][j];
-		}
-	}
-	return newTransform;
-}
-
-void AddTransform(Transform A, Transform *subject)
-{
-	int i, j, s;
-	Transform B = FromTransform(*subject);
-
-	for (i = 0; i < 4; i++) {
-		for (j = 0; j < 4; j++) {
-			subject->m[i][j] = 0;
-			for (s = 0; s < 4; s++) {
-				subject->m[i][j] = subject->m[i][j] + A.m[i][s] * B.m[s][j];
-			}
-		}
-	}
-}
-
-Transform ComposeTransform(Transform A, Transform B)
-{
-	Transform C;
-
-	for (int i = 0; i < 4; i++) {
-		for (int j = 0; j < 4; j++) {
-			C.m[i][j] = 0;
-			for (int s = 0; s < 4; s++) {
-				C.m[i][j] = C.m[i][j] + A.m[i][s] * B.m[s][j];
-			}
-		}
-	}
-
-	return C;
-}
-
-Vector ApplyTransform(Transform m, Vector v)
-/* Multiplies the transform matrix by the vector */
-{
-	double x, y, z, W;
-	Vector result;
-
-	x = m.m[0][0] * v.x +
-		m.m[0][1] * v.y +
-		m.m[0][2] * v.z +
-		m.m[0][3];
-	y = m.m[1][0] * v.x +
-		m.m[1][1] * v.y +
-		m.m[1][2] * v.z +
-		m.m[1][3];
-	z = m.m[2][0] * v.x +
-		m.m[2][1] * v.y +
-		m.m[2][2] * v.z +
-		m.m[2][3];
-	W = m.m[3][0] * v.x +
-		m.m[3][1] * v.y +
-		m.m[3][2] * v.z +
-		m.m[3][3];
-
-	// printf("w: %f, %f, %f, %f\n", x, y, z, W);
-	result.x = x;
-	result.y = y;
-	result.z = z;
-	result.w = W;
-	return result;
-}
-
-void CommitTransform(Transform t, Vector *v)
-{
-	*v = Homogenize(ApplyTransform(t, *v));
-}
-
-Transform RotationX(double angle)
-{
-	Transform t = Identity();
-	t.m[1][1] = cos(Rad(angle));
-	t.m[1][2] = -sin(Rad(angle));
-	t.m[2][1] = sin(Rad(angle));
-	t.m[2][2] = cos(Rad(angle));
-	return t;
-}
-
-Transform *RotateX(Transform *t, double angle)
-{
-	Transform rotation = RotationX(angle);
-	AddTransform(rotation, t);
-	return t;
-}
-
-Transform RotationY(double angle)
-{
-	Transform t = Identity();
-	t.m[0][0] = cos(Rad(angle));
-	t.m[0][2] = sin(Rad(angle));
-	t.m[2][0] = -sin(Rad(angle));
-	t.m[2][2] = cos(Rad(angle));
-	return t;
-}
-
-Transform *RotateY(Transform *t, double angle)
-{
-	Transform rotation = RotationY(angle);
-	AddTransform(rotation, t);
-	return t;
-}
-
-Transform RotationZ(double angle)
-{
-	Transform t = Identity();
-	t.m[0][0] = cos(Rad(angle));
-	t.m[0][1] = -sin(Rad(angle));
-	t.m[1][0] = sin(Rad(angle));
-	t.m[1][1] = cos(Rad(angle));
-	return t;
-}
-
-Transform *RotateZ(Transform *t, double angle)
-{
-	Transform rotation = RotationZ(angle);
-	AddTransform(rotation, t);
-	return t;
-}
-
-Transform Translation(Vector dv)
-{
-	Transform T = Identity();
-	dv = Homogenize(dv);
-	T.m[0][3] = dv.x;
-	T.m[1][3] = dv.y;
-	T.m[2][3] = dv.z;
-	return T;
-}
-
-Transform *Translate(Transform *t, Vector p)
-{
-	Transform translation = Translation(p);
-	AddTransform(translation, t);
-	return t;
-}
-
-Transform Scalation(double sx, double sy, double sz)
-{
-	Transform S = Identity();
-	S.m[0][0] = sx;
-	S.m[1][1] = sy;
-	S.m[2][2] = sz;
-	return S;
-}
-
-Transform *Scale(Transform *t, double sx, double sy, double sz)
-{
-	Transform scale = Scalation(sx, sy, sz);
-	AddTransform(scale, t);
-	return t;
-}
-
-double Determinant(Transform mat)
-{
-	// Bareiss algorithm
-	int i, j, k, n;
-	double result;
-
-	n = 4;
-	Transform M = FromTransform(mat);
-
-	for (i = 0; i < n-1; i++) {
-		for (j = i + 1; j < n; j++)
-			for (k = i + 1; k < n; k++) {
-					M.m[j][k] = M.m[j][k] * M.m[i][i] - M.m[j][i] * M.m[i][k];
-					if (i != 0) {
-						M.m[j][k] = M.m[j][k] / M.m[i-1][i-1];
-					}
-			 }
-	}
-
-	result = M.m[n-1][n-1];
-	return result;
-}
-
-void PrintMat(Transform mat)
-{
-	double det = Determinant(mat);
-	printf("┌% 6.2f % 6.2f % 6.2f % 6.2f ┐\n",
-			mat.m[0][0], mat.m[0][1], mat.m[0][2], mat.m[0][3]);
-	printf("│% 6.2f % 6.2f % 6.2f % 6.2f │\n",
-			mat.m[1][0], mat.m[1][1], mat.m[1][2], mat.m[1][3]);
-	printf("│% 6.2f % 6.2f % 6.2f % 6.2f │\n",
-			mat.m[2][0], mat.m[2][1], mat.m[2][2], mat.m[2][3]);
-	printf("│% 6.2f % 6.2f % 6.2f % 6.2f │\n",
-			mat.m[3][0], mat.m[3][1], mat.m[3][2], mat.m[3][3]);
-	printf("└ Determinant: % 6.2f        ┘\n", det);
-}

@@ 1,34 0,0 @@
-#pragma once
-
-#include "vertex.h"
-#include <stdbool.h>
-
-typedef struct Transform {
-	double m[4][4];
-} Transform;
-
-#define MapRange(v, a0, a1, b0, b1) (((v)-(a0))*((b1)-(b0))/((a1)-(a0))+(b0))
-#define Rad(x) ((x)*M_PI/180)
-
-Transform Identity(void);
-void SetIdentity(Transform *m);
-bool IsIdentity(Transform t);
-Transform *NewTransform(void);
-Transform FromTransform(Transform transform);
-void AddTransform(Transform A, Transform *subject);
-Transform ComposeTransform(Transform A, Transform B);
-Vector ApplyTransform(Transform t, Vector v);
-void CommitTransform(Transform t, Vector *v);
-Transform RotationX(double angle);
-Transform *RotateX(Transform *t, double angle);
-Transform RotationY(double angle);
-Transform *RotateY(Transform *t, double angle);
-Transform RotationZ(double angle);
-Transform *RotateZ(Transform *t, double angle);
-Transform Translation(Vector dv);
-Transform *Translate(Transform *t, Vector p);
-Transform Scalation(double sx, double sy, double sz);
-Transform *Scale(Transform *t, double sx, double sy, double sz);
-double Determinant(Transform mat);
-
-void PrintMat(Transform mat);

@@ 1,150 0,0 @@
-#include "vertex.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include "../../arraylist.h"
-#include <math.h>
-#include <assert.h>
-
-Vector *NewVector(double x, double y, double z)
-{
-  Vector *v = malloc(sizeof(Vector));
-  *v = V4D(x, y, z, 1);
-  return v;
-}
-
-Vector *NewVector4D(double x, double y, double z, double w)
-{
-  Vector *v = malloc(sizeof(Vector));
-  *v = V4D(x, y, z, w);
-  return v;
-}
-
-Vector V(double x, double y, double z)
-{
-  Vector v = { x, y, z, 1 };
-  return v;
-}
-
-Vector V4D(double x, double y, double z, double w)
-{
-  Vector v = { x, y, z, w };
-  return v;
-}
-
-Vector Homogenize(Vector v4d)
-{
-  Vector v = {
-    v4d.x / v4d.w,
-    v4d.y / v4d.w,
-    v4d.z / v4d.w,
-    1
-  };
-  return v;
-}
-
-Vector *FromVector(Vector v)
-{
-  return NewVector4D(v.x, v.y, v.z, v.w);
-}
-
-bool VectorEqual(Vector a, Vector b)
-{
-  return fabs(a.x - b.x) < EPSILON &&
-      fabs(a.y - b.y) < EPSILON &&
-      fabs(a.z - b.z) < EPSILON &&
-      fabs(a.w - b.w) < EPSILON;
-}
-
-vIndex FindVertex(Vertex **vertices, Vertex *vertex)
-{
-	int i;
-	for (i = 0; i < list_count(vertices); i++) {
-		if (VectorEqual(*vertices[i], *vertex)) {
-			return i;
-		}
-	}
-	return VERTEX_NOT_FOUND;
-}
-
-
-Vector NegVec(Vector v)
-{
-	return V(-v.x, -v.y, -v.z);
-}
-
-Vector NegVec4D(Vector v)
-{
-	return V4D(-v.x, -v.y, -v.z, -v.w);
-}
-
-Vector VecMul(Vector v, double s)
-{
-	return V(s*v.x, s*v.y, s*v.z);
-}
-
-Vector VecMul4D(Vector v, double s)
-{
-	return V4D(s*v.x, s*v.y, s*v.z, s*v.w);
-}
-
-Vector VecAdd(Vector a, Vector b)
-{
-	assert(a.w == b.w);
-	return V(a.x + b.x, a.y + b.y, a.z + b.z);
-}
-
-Vector VecAdd4D(Vector a, Vector b)
-{
-	return V4D(a.x + b.x, a.y + b.y, a.z + b.z, a.w + b.w);
-}
-
-Vector VecSub(Vector a, Vector b)
-{
-	assert(a.w == b.w);
-	return V(a.x - b.x, a.y - b.y, a.z - b.z);
-}
-
-Vector VecSub4D(Vector a, Vector b)
-{
-	return V4D(a.x - b.x, a.y - b.y, a.z - b.z, a.w - b.w);
-}
-
-double VecLen(Vector v)
-{
-	return sqrt(DotProd(v, v));
-}
-
-double DotProd(Vector a, Vector b)
-{
-	assert(a.w == b.w);
-	return a.x*b.x + a.y*b.y + a.z*b.z;
-}
-
-double DotProd4D(Vector a, Vector b)
-{
-	return a.x*b.x + a.y*b.y + a.z*b.z + a.w*b.w;
-}
-
-Vector CrossProd(Vector a, Vector b)
-{
-	assert(a.w == b.w);
-	double x = a.y * b.z - a.z * b.y;
-	double y = a.z * b.x - a.x * b.z;
-	double z = a.x * b.y - a.y * b.x;
-
-	return V(x, y, z);
-}
-
-Vector NormalizeVector(Vector v)
-{
-	double len = VecLen(v);
-	double x = v.x / len;
-	double y = v.y / len;
-	double z = v.z / len;
-	return V(x, y, z);
-}
-
-void PrintVec(Vector vec)
-{
-	printf("( %+.16e, %+.16e, %+.16e, %+.16e )\n", vec.x, vec.y, vec.z, vec.w);
-}

@@ 1,34 0,0 @@
-#pragma once
-
-#include <stdbool.h>
-
-#define EPSILON 0.0000001
-#define VERTEX_NOT_FOUND -1
-typedef int vIndex; // index into a vertex list
-
-typedef struct Vertex {
-	double x, y, z, w;
-} Vector, Vertex;
-
-Vector Homogenize(Vector v4d);
-bool VectorEqual(Vector a, Vector b);
-#define VertexEqual(a, b) VectorEqual(a, b)
-Vector V(double x, double y, double z);
-Vector V4D(double x, double y, double z, double w);
-vIndex FindVertex(Vertex **vertices, Vertex *vertex);
-
-Vector NegVec(Vector vector);
-Vector NegVec4D(Vector v);
-Vector VecMul(Vector v, double s);
-Vector VecMul4D(Vector v, double s);
-Vector VecAdd(Vector a, Vector b);
-Vector VecAdd4D(Vector a, Vector b);
-Vector VecSub(Vector a, Vector b);
-Vector VecSub4D(Vector a, Vector b);
-double VecLen(Vector v);
-double DotProd(Vector a, Vector b);
-double DotProd4D(Vector a, Vector b);
-Vector CrossProd(Vector a, Vector b);
-Vector NormalizeVector(Vector v);
-
-void PrintVec(Vector vec);

@@ 1,6 0,0 @@
-#pragma once
-
-#include "device/dither.h"
-#include "device/endpoint.h"
-#include "device/rasterize.h"
-#include "device/viewport.h"

@@ 1,261 0,0 @@
-#include "endpoint.h"
-#include <stdlib.h>
-#include <math.h>
-#include <stdio.h>
-#include "../../arraylist.h"
-
-Endpoint *NewEndpoint(double ymax, double x, double xinc)
-{
-	Endpoint *e = malloc(sizeof(Endpoint));
-	e->ymax = ymax;
-	e->x = x;
-	e->xinc = xinc;
-	e->next = NULL;
-	return e;
-}
-
-Endpoint *MakeEndpoint(Vertex *upper, Vertex *lower)
-{
-	double ymax, x, xinc, z, zinc;
-	Endpoint *endpoint;
-
-	ymax = upper->y;
-	x = lower->x;
-	xinc = (upper->x - lower->x) / (upper->y - lower->y);
-	z = lower->z;
-	zinc = (upper->z - lower->z) / (upper->y - lower->y);
-	endpoint = NewEndpoint(ymax, x, xinc);
-
-	/* add custom properties here */
-	endpoint->z = z;
-	endpoint->zinc = zinc;
-
-	return endpoint;
-}
-
-void InsertEndpoint(Endpoint **list, Endpoint *endpoint)
-/* insertion sort, by x */
-{
-	Endpoint *curNode;
-
-	endpoint->next = NULL;
-
-	if (*list == NULL) {
-		*list = endpoint;
-	} else if (endpoint->x < (*list)->x) {
-		endpoint->next = *list;
-		*list = endpoint;
-	} else {
-		curNode = *list;
-		while (curNode->next != NULL
-				&& endpoint->x > curNode->next->x ) {
-			curNode = curNode->next;
-		}
-
-		endpoint->next = curNode->next;
-		curNode->next = endpoint;
-	}
-}
-
-void InsertEndpoints(Endpoint **list, Endpoint *endpoint)
-{
-	Endpoint *curNode, *nextNode;
-
-	curNode = endpoint;
-	while (curNode != NULL) {
-		nextNode = curNode->next;
-		InsertEndpoint(list, curNode);
-		curNode = nextNode;
-	}
-}
-
-void IncrementEndpoints(Endpoint **endpoints, int y)
-{
-	Endpoint *curNode;
-	curNode = *endpoints;
-
-	while(curNode != NULL) {
-		if (floor(curNode->ymax) != y + 1) {
-			curNode->x += curNode->xinc;
-			curNode->z += curNode->zinc;
-		} else {
-			curNode->x += curNode->xinc*(curNode->ymax - (y + 1));
-		}
-		curNode = curNode->next;
-	}
-}
-
-void SortEndpoints(Endpoint **endpoints)
-/* Bubble sort, 1 pass */
-{
-	Endpoint *curNode, *a, *b, *c;
-
-	if (*endpoints == NULL || (*endpoints)->next == NULL)
-		return;
-
-	a = *endpoints;
-	b = a->next;
-	if (a->x > b->x) {
-		c = b->next;
-		*endpoints = b;
-		b->next = a;
-		a->next = c;
-	}
-
-	curNode = *endpoints;
-	while(curNode != NULL &&
-			curNode->next != NULL &&
-			curNode->next->next != NULL) {
-		a = curNode->next;
-		b = a->next;
-		if (a->x > b->x) {
-			c = b->next;
-			curNode->next = b;
-			b->next = a;
-			a->next = c;
-		}
-
-		curNode = curNode->next;
-	}
-}
-
-void RemoveEndpoints(Endpoint **list, int y)
-{
-	Endpoint *curNode, *oldNode;
-
-	while ((*list != NULL) && floor((*list)->ymax) == y) {
-		oldNode = *list;
-		*list = (*list)->next;
-		free(oldNode);
-	}
-	if (*list == NULL) {
-		return;
-	}
-
-	curNode = *list;
-	while (curNode != NULL) {
-		while (curNode->next != NULL && floor(curNode->next->ymax) == y) {
-			oldNode = curNode->next;
-			curNode->next = curNode->next->next;
-			free(oldNode);
-		}
-		curNode = curNode->next;
-	}
-}
-
-void FreeEndpoints(Endpoint *endpoints)
-{
-	Endpoint *curNode = endpoints;
-	Endpoint *oldNode;
-	while (curNode != NULL) {
-		oldNode = curNode;
-		curNode = curNode->next;
-		free(oldNode);
-	}
-}
-
-Endpoint **MakeEdgeTable(unsigned int numLines, Polygon *polygon)
-{
-	Endpoint **buckets = malloc(sizeof(Endpoint *)*numLines);
-	vIndex i;
-	unsigned int bucket;
-	Vertex *a, *b, *upper, *lower;
-
-	for (bucket = 0; bucket < numLines; bucket++) {
-		buckets[bucket] = NULL;
-	}
-
-	for (i = 0; i < NumVertices(polygon); i++) {
-		a = PolygonVertex(polygon, i);
-		b = PolygonVertex(polygon, i+1);
-		lower = LowerVertex(a, b);
-		upper = (a == lower) ? b : a;
-
-		if (upper->y != lower->y) {
-			bucket = floor(lower->y);
-			InsertEndpoint(&buckets[bucket], MakeEndpoint(upper, lower));
-		}
-	}
-
-	return buckets;
-}
-
-int FirstBucket(Endpoint **table, int length)
-/* returns first non-empty table index, or -1 if table is empty */
-{
-	int bucket;
-	for (bucket = 0; bucket < length; bucket++) {
-		if (table[bucket] != NULL) {
-			return bucket;
-		}
-	}
-	return -1;
-}
-
-void FreeEdgeTable(Endpoint **table, int length)
-{
-	int bucket;
-	for (bucket = 0; bucket < length; bucket++) {
-		if (table[bucket] != NULL) {
-			// FreeEndpoints(table[bucket]);
-		}
-	}
-	free(table);
-}
-
-Vertex *LowerVertex(Vertex *a, Vertex *b)
-{
-	if (a->y < b->y) {
-		return a;
-	} else {
-		return b;
-	}
-}
-
-void PrintEndpoint(Endpoint *endpoint)
-{
-	printf("│ymax: %.2f\n", endpoint->ymax);
-	printf("│x:    %.2f (%+.2f)\n", endpoint->x, endpoint->xinc);
-	printf("│z:    %.2f (%+.2f)\n", endpoint->z, endpoint->zinc);
-	printf("├────────\n");
-	if(endpoint->next == NULL) {
-		printf("┴");
-	}
-	printf("\n");
-}
-
-void PrintEndpoints(Endpoint *endpoints)
-{
-	Endpoint *curNode = endpoints;
-	// printf("┌────────────\n");
-	while (curNode != NULL) {
-		printf("│ymax: %.2f\n", curNode->ymax);
-		printf("│x:    %.2f (%+.2f)\n", curNode->x, curNode->xinc);
-		printf("│z:    %.2f (%+.2f)\n", curNode->z, curNode->zinc);
-		printf("├────────\n");
-		curNode = curNode->next;
-	}
-	printf("┴\n");
-}
-
-void PrintTable(Endpoint **table, int numBuckets)
-{
-	for(int i = 0; i < numBuckets; i++) {
-		if (table[i] != NULL) {
-			printf("┌─ %d ───────────\n", i);
-			// printf("%d: ", i);
-			PrintEndpoints(table[i]);
-		}
-	}
-}
-
-int ListLength(Endpoint *list)
-{
-	Endpoint *curNode = list;
-	int count = 0;
-	while (curNode != NULL) {
-		count++;
-		curNode = curNode->next;
-	}
-	return count;
-}

@@ 1,34 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-
-typedef struct Endpoint {
-	double ymax;
-	double x;
-	double xinc;
-	double z;
-	double zinc;
-	int color;
-	struct Endpoint *next;
-} Endpoint;
-
-Endpoint *NewEndpoint(double ymax, double x, double xinc);
-Endpoint *MakeEndpoint(Vertex *upper, Vertex *lower);
-void InsertEndpoint(Endpoint **list, Endpoint *endpoint);
-void InsertEndpoints(Endpoint **list, Endpoint *endpoint);
-void IncrementEndpoints(Endpoint **endpoints, int y);
-void SortEndpoints(Endpoint **endpoints);
-void RemoveEndpoints(Endpoint **list, int y);
-void FreeEndpoints(Endpoint *endpoints);
-
-Endpoint **MakeEdgeTable(unsigned int numLines, Polygon *polygon);
-int FirstBucket(Endpoint **table, int length);
-void FreeEdgeTable(Endpoint **table, int size);
-
-Vertex *LowerVertex(Vertex *a, Vertex *b);
-
-// debug
-void PrintEndpoint(Endpoint *endpoint);
-void PrintEndpoints(Endpoint *endpoints);
-void PrintTable(Endpoint **table, int numBuckets);
-int ListLength(Endpoint *list);

@@ 1,154 0,0 @@
-
-#include "rasterize.h"
-#include <math.h>
-#include <stddef.h>
-
-RasterSettings DefaultRasterSettings(void)
-{
-	RasterSettings s;
-	s.showWireframes = false;
-	s.showDepthBuffer = false;
-	return s;
-}
-
-void RasterPolygon(Polygon *polygon, Color color, Viewport *viewport, RasterSettings settings)
-{
-	int y;
-	Endpoint **ET = MakeEdgeTable(viewport->height, polygon);
-	Endpoint *AET = NULL;
-
-	y = FirstBucket(ET, viewport->height);
-	if (y != -1) {
-		do {
-			InsertEndpoints(&AET, ET[y]);
-			RemoveEndpoints(&AET, y);
-			IncrementEndpoints(&AET, y);
-			SortEndpoints(&AET);
-			ColorSpans(&AET, y, color, viewport, settings);
-
-			y += 1;
-		} while (y < viewport->height && AET != NULL);
-	}
-
-	FreeEdgeTable(ET, viewport->height);
-}
-
-void ColorSpans(Endpoint **endpoints, int y, Color color, Viewport *viewport, RasterSettings settings)
-{
-	Endpoint *curNode;
-	int xmin, xmax, x;
-	double zmin, zmax;
-
-	curNode = *endpoints;
-	while (curNode != NULL && curNode->next != NULL) {
-		xmin = floor(curNode->x);
-		xmax = floor(curNode->next->x);
-		zmin = curNode->z;
-		zmax = curNode->next->z;
-		for (x = xmin; x < xmax; x++) {
-			// TODO: refactor to use constant zxinc per polygon
-			double z = MapRange(x, xmin, xmax, zmin, zmax);
-
-			if (settings.showDepthBuffer) {
-				color = z;
-			}
-
-			if (UpdateDepthBuffer(x, y, z, viewport)) {
-				WritePixel(x, y, color, viewport);
-			}
-		}
-		curNode = curNode->next->next;
-	}
-}
-
-void RasterTriangle(Polygon *tri, Color color)
-{
-
-}
-
-void RasterLine(Vertex a, Vertex b, Color color, Viewport *viewport)
-{
-	double dx = b.x - a.x;
-	double dy = b.y - a.y;
-	if (fabs(dy) < fabs(dx)) {
-		if (a.x > b.x) {
-			RasterLineShallow(b, a, color, viewport);
-		} else {
-			RasterLineShallow(a, b, color, viewport);
-		}
-	} else {
-		if (a.y > b.y) {
-			RasterLineSteep(b, a, color, viewport);
-		} else {
-			RasterLineSteep(a, b, color, viewport);
-		}
-	}
-}
-
-void RasterLineShallow(Vertex a, Vertex b, Color color, Viewport *viewport)
-{
-	double dx = b.x - a.x;
-	double dy = b.y - a.y;
-	double yi = 1;
-	if (dy < 0) {
-		yi = -1;
-		dy = -dy;
-	}
-
-	double d = 2*dy - dx;
-	double x;
-	double y = a.y;
-
-	for (x = a.x; x <= b.x; x++) {
-		double z = MapRange(x, a.x, b.x, a.z, b.z);
-		if (UpdateDepthBuffer(x, y, z, viewport)) {
-			WritePixel(x, y, color, viewport);
-		}
-		if (d > 0) {
-			y += yi;
-			d -= 2*dx;
-		}
-		d += 2*dy;
-	}
-}
-
-void RasterLineSteep(Vertex a, Vertex b, Color color, Viewport *viewport)
-{
-	double dx = b.x - a.x;
-	double dy = b.y - a.y;
-	double xi = 1;
-	if (dx < 0) {
-		xi = -1;
-		dx = -dx;
-	}
-
-	double d = 2*dx - dy;
-	double x = a.x;
-	double y;
-
-	for (y = a.y; y <= b.y; y++) {
-		double z = MapRange(y, a.y, b.y, a.z, b.z);
-		if (UpdateDepthBuffer(x, y, z, viewport)) {
-			WritePixel(x, y, color, viewport);
-		}
-		if (d > 0) {
-			x += xi;
-			d -= 2*dy;
-		}
-		d += 2*dx;
-	}
-}
-
-void WritePixel(int x, int y, Color color, Viewport *viewport)
-{
-	Pixel p = ColorPixel(color);
-	if (x >= 0 && x < viewport->width && y >= 0 && y < viewport->height) {
-		viewport->pixels[(viewport->height - 1 - y)*viewport->width+x] = p;
-	}
-}
-
-Color GetPixel(int x, int y, Viewport *viewport)
-{
-	Pixel p = viewport->pixels[(viewport->height - 1 - y)*viewport->width+x];
-	return PixelColor(p);
-}

@@ 1,26 0,0 @@
-#pragma once
-
-#include "endpoint.h"
-#include "../abstract.h"
-#include "viewport.h"
-#include <stdint.h>
-#include <stdbool.h>
-
-typedef struct RasterSettings {
-	bool showWireframes;
-	bool showDepthBuffer;
-} RasterSettings;
-
-RasterSettings DefaultRasterSettings(void);
-
-void RasterPolygon(Polygon *polygon, Color color, Viewport *viewport, RasterSettings settings);
-void ColorSpans(Endpoint **endpoints, int y, Color color, Viewport *viewport, RasterSettings settings);
-
-void RasterTriangle(Polygon *tri, Color color);
-
-void RasterLine(Vertex a, Vertex b, Color color, Viewport *viewport);
-void RasterLineShallow(Vertex a, Vertex b, Color color, Viewport *viewport);
-void RasterLineSteep(Vertex a, Vertex b, Color color, Viewport *viewport);
-
-void WritePixel(int x, int y, Color color, Viewport *viewport);
-Color GetPixel(int x, int y, Viewport *viewport);

@@ 1,66 0,0 @@
-#include "viewport.h"
-#include "../image.h"
-#include "../render.h"
-#include <stdlib.h>
-#include <assert.h>
-#include <math.h>
-
-Viewport *NewViewport(Pixel *pixels, Color bg, int width, int height)
-{
-	Viewport *viewport = malloc(sizeof(Viewport));
-	viewport->pixels = pixels;
-	viewport->background = bg;
-	viewport->width = width;
-	viewport->height = height;
-	viewport->depthbuffer = NULL;
-	ClearViewport(viewport);
-	InitDeviceTransform(width, height);
-	// z buffer enabled by default
-	AddDepthBuffer(viewport);
-
-	return viewport;
-}
-
-void ClearViewport(Viewport *viewport)
-{
-	for (int y = 0; y < viewport->height; y++) {
-		for (int x = 0; x < viewport->width; x++) {
-			WritePixel(x, y, viewport->background, viewport);
-			if (viewport->depthbuffer != NULL)
-				viewport->depthbuffer[y*viewport->width + x] = -INFINITY;
-		}
-	}
-	// AddDepthBuffer(viewport);
-}
-
-void AddDepthBuffer(struct Viewport *viewport)
-{
-	assert(viewport->pixels != NULL);
-
-	DepthVal *values = malloc(sizeof(DepthVal)*viewport->width*viewport->height);
-	for(int y = 0; y < viewport->height; y++) {
-		for (int x = 0; x < viewport->width; x++) {
-			values[y*viewport->width + x] = -INFINITY;
-		}
-	}
-
-	viewport->depthbuffer = values;
-}
-
-bool UpdateDepthBuffer(int x, int y, double z, struct Viewport *viewport)
-{
-	assert(viewport->depthbuffer != NULL);
-
-	if (z > viewport->depthbuffer[y*viewport->width+x]) {
-		viewport->depthbuffer[y*viewport->width+x] = z;
-		return true;
-	} else {
-		return false;
-	}
-}
-
-void DisableDepthBuffer(Viewport *viewport)
-{
-	free(viewport->depthbuffer);
-	viewport->depthbuffer = NULL;
-}

@@ 1,20 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-
-typedef double DepthVal;
-
-typedef struct Viewport {
-	Color background;
-	int width;
-	int height;
-	Pixel *pixels;
-	DepthVal *depthbuffer;
-} Viewport;
-
-Viewport *NewViewport(Pixel *pixels, Color bg, int width, int height);
-Viewport *GetViewport(void);
-void ClearViewport(Viewport *viewport);
-void AddDepthBuffer(Viewport *viewport);
-bool UpdateDepthBuffer(int x, int y, double z, Viewport *viewport);
-void DisableDepthBuffer(Viewport *viewport);

@@ 1,5 0,0 @@
-#pragma once
-
-#include "image/camera.h"
-#include "image/clip.h"
-#include "image/project.h">
\ No newline at end of file

@@ 1,57 0,0 @@
-#include "camera.h"
-#include <stdlib.h>
-#include <assert.h>
-
-Camera *NewCamera(Vector position)
-{
-	Camera *camera = malloc(sizeof(Camera));
-	camera->position = position;
-	camera->direction = V(0, 0, -1);
-	camera->up = V(0, 1, 0);
-	camera->transform = Identity();
-	return camera;
-}
-
-void LookAt(Vector p, Camera *camera)
-{
-	camera->direction = NormalizeVector(VecSub(p, camera->position));
-}
-
-void StandOn(Vector p, Camera *camera)
-{
-	camera->up = NormalizeVector(VecSub(p, camera->position));
-}
-
-void MoveCamera(Vector dv, Camera *camera)
-{
-	camera->position = VecAdd(camera->position, dv);
-}
-
-void RotateCamera(double rx, double ry, double rz, Camera *camera)
-{
-	Transform t = RotationX(rx);
-	AddTransform(RotationY(ry), &t);
-	AddTransform(RotationZ(rz), &t);
-	camera->direction = NormalizeVector(ApplyTransform(t, camera->direction));
-}
-
-Transform AlignCameraToAxis(Camera *camera)
-{
-	Vector Rx, Ry, Rz;
-	Transform op = Identity();
-	Rz = NegVec(camera->direction);
-	Rx = CrossProd(camera->up, NegVec(camera->direction));
-	Ry = CrossProd(Rz, Rx);
-	op.m[0][0] = Rx.x;
-	op.m[0][1] = Rx.y;
-	op.m[0][2] = Rx.z;
-
-	op.m[1][0] = Ry.x;
-	op.m[1][1] = Ry.y;
-	op.m[1][2] = Ry.z;
-
-	op.m[2][0] = Rz.x;
-	op.m[2][1] = Rz.y;
-	op.m[2][2] = Rz.z;
-	return op;
-}

@@ 1,18 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-
-typedef struct Camera {
-	Vector position;
-	Vector direction;
-	Vector up;
-	Transform transform;
-} Camera;
-
-Camera *NewCamera(Vector position);
-void LookAt(Vector p, Camera *camera);
-void StandOn(Vector p, Camera *camera);
-void RotateCamera(double rx, double ry, double rz, Camera *camera);
-void MoveCamera(Vector dv, Camera *camera);
-Transform AlignCameraToAxis(Camera *camera);
-Transform CameraTransform(Camera *camera);

@@ 1,179 0,0 @@
-#include "clip.h"
-
-#include "../../arraylist.h"
-
-bool ClipLine(Vector *v0, Vector *v1)
-/* alters v0 and v1 to fit within the canonical view volume */
-{
-	/* Adapted Liang-Barsky, from FvDF&H */
-	double tmin = 0, tmax = 1;
-	double dx = v1->x - v0->x;
-	double dw = v1->w - v0->w;
-	bool accept = false;
-
-	if (ClipT(dx + dw, -v0->x - v0->w, &tmin, &tmax)) { /* x >= -w */
-		if (ClipT(-dx + dw, v0->x - v0->w, &tmin, &tmax)) { /* x <= w */
-			double dy = v1->y - v0->y;
-			if (ClipT(dy + dw, -v0->y - v0->w, &tmin, &tmax)) { /* y >= -w */
-				if (ClipT(-dy + dw, v0->y - v0->w, &tmin, &tmax)) { /* y <= w */
-					double dz = v1->z - v0->z;
-					if (ClipT(dz + dw, -v0->z - v0->w, &tmin, &tmax)) { /* z >= -w */
-						if (ClipT(-dz + dw, v0->z - v0->w, &tmin, &tmax)) { /* z <= w */
-							accept = true; /* part of line is visible */
-							if (tmax < 1) {
-								v1->x = v0->x + tmax * dx;
-								v1->y = v0->y + tmax * dy;
-								v1->z = v0->z + tmax * dz;
-								v1->w = v0->w + tmax * dw;
-							}
-							if (tmin > 0) {
-								v0->x += tmin * dx;
-								v0->y += tmin * dy;
-								v0->z += tmin * dz;
-								v0->w += tmin * dw;
-							}
-						}
-					}
-				}
-			}
-		}
-	}
-
-	return accept;
-}
-
-bool ClipT(double den, double num, double *tE, double *tL)
-{
-	double t;
-
-	if (den > 0) {
-		/* Potentially entering clip region */
-		t = num / den;
-		if (t > *tL) {
-			return false;
-		} else if (t > *tE) {
-			*tE = t;
-		}
-	} else if (den < 0) {
-		/* Potentially leaving clip region */
-		t = num / den;
-		if (t < *tE) {
-			return false;
-		} else if (t < *tL) {
-			*tL = t;
-		}
-	} else if (num > 0) {
-		return false;
-	}
-
-	return true;
-}
-
-bool ClipPoint(Vector p)
-{
-	// planes in W-space
-	Plane x_neg = Pl(V4D(0, 0, 0, 0), V4D(-1,  0,  0, -1));
-	Plane x_pos = Pl(V4D(0, 0, 0, 0), V4D( 1,  0,  0, -1));
-	Plane y_neg = Pl(V4D(0, 0, 0, 0), V4D( 0, -1,  0, -1));
-	Plane y_pos = Pl(V4D(0, 0, 0, 0), V4D( 0,  1,  0, -1));
-	// Plane z_neg = Pl(V4D(0, 0, 0, 0), V4D( 0,  0, -1, -1));
-	// Plane z_pos = Pl(V4D(0, 0, 0, 0), V4D( 0,  0,  1, -1));
-
-	return VertexInside(&p, x_neg)
-		&& VertexInside(&p, x_pos)
-		&& VertexInside(&p, y_neg)
-		&& VertexInside(&p, y_pos);
-		// && VertexInside(&p, z_neg)
-		// && VertexInside(&p, z_pos);
-}
-
-bool ClipPolygon(Polygon **polygon)
-/* alters the vertices of a polygon to fit within -w <= x, y, z <= w
- * returns whether polygon is visible after clipping */
-{
-	// planes in W-space
-	Plane x_neg = Pl(V4D(0, 0, 0, 0), V4D(-1,  0,  0, -1));
-	Plane x_pos = Pl(V4D(0, 0, 0, 0), V4D( 1,  0,  0, -1));
-	Plane y_neg = Pl(V4D(0, 0, 0, 0), V4D( 0, -1,  0, -1));
-	Plane y_pos = Pl(V4D(0, 0, 0, 0), V4D( 0,  1,  0, -1));
-	Plane z_neg = Pl(V4D(0, 0, 0, 0), V4D( 0,  0, -1, -1));
-	Plane z_pos = Pl(V4D(0, 0, 0, 0), V4D( 0,  0,  1, -1));
-
-	ClipPolygonPlane(polygon, x_neg);
-	ClipPolygonPlane(polygon, x_pos);
-	ClipPolygonPlane(polygon, y_neg);
-	ClipPolygonPlane(polygon, y_pos);
-	ClipPolygonPlane(polygon, z_neg);
-	ClipPolygonPlane(polygon, z_pos);
-
-	// floating point errors can make some vertices still be out of bounds...
-	ConstrainPolygon(*polygon);
-
-	return NumVertices(*polygon) > 2;
-}
-
-void ConstrainPolygon(Polygon *polygon)
-{
-	for (int i = 0; i < NumVertices(polygon); i++) {
-		Vertex *v = PolygonVertex(polygon, i);
-		if (v->x < -v->w) v->x = -v->w;
-		if (v->x > v->w) v->x = v->w;
-		if (v->y < -v->w) v->y = -v->w;
-		if (v->y > v->w) v->y = v->w;
-		if (v->z < -v->w) v->z = -v->w;
-		if (v->z > v->w) v->z = v->w;
-	}
-}
-
-void ClipPolygonPlane(Polygon **polygon, Plane clipBoundary)
-/* Sutherland-Hodgeman algorithm */
-{
-	Polygon *clipped = NewPolygon();
-	int j;
-	Vertex *s, *p, *i, *newVert;
-
-	if ((*polygon)->vList == NULL) {
-		return;
-	}
-
-	s = PolygonVertex(*polygon, list_last((*polygon)->vList));
-	for (j = 0; j < NumVertices(*polygon); j++) {
-		p = PolygonVertex(*polygon, j);
-		if (VertexInside(p, clipBoundary)) {
-			if (VertexInside(s, clipBoundary)) {
-				newVert = NewVector4D(p->x, p->y, p->z, p->w);
-				AddVertex(clipped, newVert);
-			} else {
-				i = FromVertex(ClipIntersect(s, p, clipBoundary));
-				AddVertex(clipped, i);
-				newVert = NewVector4D(p->x, p->y, p->z, p->w);
-				AddVertex(clipped, newVert);
-			}
-		} else {
-			if (VertexInside(s, clipBoundary)) {
-				i = FromVertex(ClipIntersect(s, p, clipBoundary));
-				AddVertex(clipped, i);
-			}
-		}
-		s = p;
-	}
-
-	FreePolygon(*polygon);
-	*polygon = clipped;
-}
-
-bool VertexInside(Vertex *v, Plane clipBoundary)
-{
-	Vector n = clipBoundary.normal;
-	return DotProd4D(n, *v) <= 0;
-}
-
-Vertex ClipIntersect(Vertex *s, Vertex *p, Plane clipBoundary)
-{
-	Vector sp = VecSub4D(*s, *p);
-	Vector n = clipBoundary.normal;
-
-	// t = -n•p / n•(s-p)
-	double t = DotProd4D(NegVec4D(n), *p) / DotProd4D(n, sp);
-	return V4D(p->x + t*sp.x, p->y + t*sp.y, p->z + t*sp.z, p->w + t*sp.w);
-}

@@ 1,13 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-#include <stdbool.h>
-
-bool ClipT(double den, double num, double *tE, double *tL);
-bool ClipLine(Vector *v0, Vector *v1);
-bool ClipPoint(Vector p);
-bool ClipPolygon(Polygon **polygon);
-void ConstrainPolygon(Polygon *polygon);
-void ClipPolygonPlane(Polygon **polygon, Plane clipBoundary);
-bool VertexInside(Vertex *v, Plane clipBoundary);
-Vertex ClipIntersect(Vertex *a, Vertex *b, Plane clipBoundary);

@@ 1,138 0,0 @@
-#include "project.h"
-#include "../../arraylist.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <assert.h>
-#include "camera.h"
-
-static Transform *deviceTransform = NULL;
-
-void InitDeviceTransform(unsigned int width, unsigned int height)
-{
-	// Move canonical volume to origin
-	deviceTransform = malloc(sizeof(Transform));
-	*deviceTransform = Translation(V(1, 1, 0));
-
-	// Scale to viewport size
-	Scale(deviceTransform, 0.5*(width-1), 0.5*(height-1), 1);
-}
-
-Projection *NewOrthoProjection(AABBox vol)
-{
-	Projection *projection = malloc(sizeof(Projection));
-
-	projection->ortho.type = ORTHO;
-	projection->ortho.near = vol.near;
-	projection->ortho.far = vol.far;
-	projection->ortho.left = vol.left;
-	projection->ortho.right = vol.right;
-	projection->ortho.bottom = vol.bottom;
-	projection->ortho.top = vol.top;
-
-	return projection;
-}
-
-Projection *NewPerspectiveProjection(double fov, double aspect, double near, double far)
-/* field of view is in degrees */
-{
-	Projection *projection = malloc(sizeof(Projection));
-
-	projection->perspective.type = PERSPECTIVE;
-	projection->perspective.near = near;
-	projection->perspective.far = far;
-	projection->perspective.fov = Rad(fov);
-	projection->perspective.aspect = aspect;
-
-	return projection;
-}
-
-Transform OrthoTransform(Projection *projection)
-{
-	Transform t;
-
-	assert(projection->ortho.type == ORTHO);
-
-	t = Identity();
-
-	// translate to canonical view volume
-	Translate(&t, V(
-			-(projection->ortho.right + projection->ortho.left) / 2,
-			-(projection->ortho.top + projection->ortho.bottom) / 2,
-			-projection->ortho.near));
-
-	// scale to canonical view volume
-	Scale(&t,
-			2 / (projection->ortho.right - projection->ortho.left),
-			2 / (projection->ortho.top - projection->ortho.bottom),
-			1 / (projection->ortho.near - projection->ortho.far));
-
-	return t;
-}
-
-Transform PerspectiveTransform(Projection *projection)
-{
-	Transform op, t;
-
-	assert(projection->perspective.type == PERSPECTIVE);
-
-	t = Identity();
-
-	// perspective transform into canonical view volume
-	op = Identity();
-	op.m[0][0] = 1/(projection->perspective.aspect * tan(projection->perspective.fov/2));
-	op.m[1][1] = 1/tan(projection->perspective.fov/2);
-	op.m[2][2] = (projection->perspective.far + projection->perspective.near)
-			/ (projection->perspective.far - projection->perspective.near);
-	op.m[3][3] = 0;
-	op.m[2][3] = (2*projection->perspective.far*projection->perspective.near)
-			/ (projection->perspective.far - projection->perspective.near);
-	op.m[3][2] = -1;
-	AddTransform(op, &t);
-
-	return t;
-}
-
-Transform CameraTransform(Camera *camera)
-{
-	Transform t = Translation(NegVec(camera->position));
-	AddTransform(AlignCameraToAxis(camera), &t);
-	AddTransform(camera->transform, &t);
-
-	return t;
-}
-
-Transform GetProjectionTransform(Camera *camera, Projection *projection)
-{
-	Transform t = CameraTransform(camera);
-	if (projection->ortho.type == ORTHO) {
-		AddTransform(OrthoTransform(projection), &t);
-	} else {
-		AddTransform(PerspectiveTransform(projection), &t);
-	}
-	return t;
-}
-
-Vector ProjectPoint(Vertex p, Transform t)
-{
-	return ApplyTransform(t, p);
-}
-
-Vertex ViewmapPoint(Vertex p)
-{
-	assert(deviceTransform != NULL);
-	return Homogenize(ApplyTransform(*deviceTransform, p));
-}
-
-Polygon *ProjectPolygon(Polygon *polygon, Transform t)
-{
-	return FromPolygon(polygon, t);
-}
-
-void ViewmapPolygon(Polygon *polygon)
-{
-	assert(deviceTransform != NULL);
-	for (int i = 0; i < NumVertices(polygon); i++) {
-		CommitTransform(*deviceTransform, PolygonVertex(polygon, i));
-	}
-}

@@ 1,46 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-#include <stdbool.h>
-#include "camera.h"
-
-typedef enum ProjectionType {
-	ORTHO, PERSPECTIVE
-} ProjectionType;
-
-typedef struct PerspectiveProjection {
-	ProjectionType type;
-	double near;
-	double far;
-	double fov;
-	double aspect;
-} PerspectiveProjection;
-
-typedef struct OrthoProjection {
-	ProjectionType type;
-	double near;
-	double far;
-	double left;
-	double right;
-	double bottom;
-	double top;
-} OrthoProjection;
-
-typedef union Projection {
-	PerspectiveProjection perspective;
-	OrthoProjection ortho;
-} Projection;
-
-void InitDeviceTransform(unsigned int width, unsigned int height);
-
-Projection *NewOrthoProjection(AABBox vol);
-Projection *NewPerspectiveProjection(double fov, double aspect, double near, double far);
-
-Transform OrthoTransform(Projection *projection);
-Transform PerspectiveTransform(Projection *projection);
-Transform GetProjectionTransform(Camera *camera, Projection *projection);
-
-Vertex ProjectPoint(Vertex p, Transform t);
-Vertex ViewmapPoint(Vertex p);
-Polygon *ProjectPolygon(Polygon *polygon, Transform t);
-void ViewmapPolygon(Polygon *polygon);

@@ 1,92 0,0 @@
-#include "render.h"
-#include "../arraylist.h"
-#include "image.h"
-#include "device.h"
-#include "abstract.h"
-
-RenderingContext MakeRenderingContext(Viewport *viewport, Camera *camera,
-		Transform projectionTransform, RasterSettings settings)
-{
-	RenderingContext context;
-	context.viewport = viewport;
-	context.camera = camera;
-	context.projectionTransform = projectionTransform;
-	context.settings = settings;
-	return context;
-}
-
-void DrawObject(Object *object, LightSource **lights, RenderingContext context, Transform imageTransform)
-{
-	Transform modelingTransform = ComposeTransform(Translation(object->position), object->transform);
-	for (int i = 0; i < NumFacets(object->geometry); i++) {
-		Polygon *modeled = FromPolygon(object->geometry->facets[i], modelingTransform);
-		Color shade = LightPolygon(modeled, object->color, object->glow, lights);
-		DrawPolygon(modeled, shade, context, imageTransform);
-		FreePolygon(modeled);
-	}
-}
-
-void DrawPolygon(Polygon *polygon, Color color, RenderingContext context, Transform imageTransform)
-{
-	Polygon *image = ProjectPolygon(polygon, imageTransform);
-	if (ClipPolygon(&image)) {
-		if (!BackfaceCulled(image)) {
-			HomogenizePolygon(image);
-			ViewmapPolygon(image);
-			RasterPolygon(image, color, context.viewport, context.settings);
-			if (context.settings.showWireframes) {
-				WireframePolygon(image, WHITE, context.viewport);
-			}
-		}
-	}
-	FreePolygon(image);
-}
-
-void WireframePolygon(Polygon *polygon, Color color, Viewport *viewport)
-{
-	Vertex *a, *b;
-	for (int i = 0; i < NumVertices(polygon); i++) {
-		a = PolygonVertex(polygon, i);
-		b = PolygonVertex(polygon, i+1);
-		RasterLine(*a, *b, color, viewport);
-	}
-}
-
-void DrawPoint(Point *p, RenderingContext context, Transform imageTransform)
-{
-	Vector projected = ProjectPoint(p->position, imageTransform);
-	if (ClipPoint(projected)) {
-		Vector mapped = ViewmapPoint(Homogenize(projected));
-		if (UpdateDepthBuffer(mapped.x, mapped.y, mapped.z, context.viewport)) {
-			WritePixel(mapped.x, mapped.y, p->color, context.viewport);
-		}
-	}
-}
-
-void DrawLine(Vertex a, Vertex b, Color color, Viewport *viewport, Transform imageTransform)
-{
-	Vector ap = ProjectPoint(a, imageTransform);
-	Vector bp = ProjectPoint(b, imageTransform);
-	Vector ac = ap;
-	Vector bc = bp;
-	if (ClipLine(&ac, &bc)) {
-		Vertex av = ViewmapPoint(Homogenize(ac));
-		Vertex bv = ViewmapPoint(Homogenize(bc));
-		RasterLine(av, bv, color, viewport);
-	}
-}
-
-void DrawAxes(RenderingContext context)
-{
-	Transform imageTransform = ComposeTransform(context.projectionTransform, CameraTransform(context.camera));
-	DrawLine(V(0, 0, 0), V(10, 0, 0), LT_GRAY, context.viewport, imageTransform);
-	DrawLine(V(0, 0, 0), V(0, 10, 0), LT_GRAY, context.viewport, imageTransform);
-	DrawLine(V(0, 0, 0), V(0, 0, 10), LT_GRAY, context.viewport, imageTransform);
-}
-
-bool BackfaceCulled(Polygon *polygon)
-{
-	Vector normal = PolygonNormal(polygon);
-	return normal.z <= 0;
-}
-

@@ 1,24 0,0 @@
-#pragma once
-
-#include <stdint.h>
-#include "abstract.h"
-#include "world.h"
-#include "device.h"
-#include "image.h"
-
-typedef struct RenderingContext {
-	Viewport *viewport;
-	Camera *camera;
-	Transform projectionTransform;
-	RasterSettings settings;
-} RenderingContext;
-
-RenderingContext MakeRenderingContext(Viewport *viewport, Camera *camera, Transform projectionTransform, RasterSettings settings);
-void DrawObject(Object *object, LightSource **lights, RenderingContext context, Transform imageTransform);
-void DrawPolygon(Polygon *polygon, Color color, RenderingContext context, Transform imageTransform);
-void WireframePolygon(Polygon *polygon, Color color, Viewport *viewport);
-void DrawPoint(Point *p, RenderingContext context, Transform imageTransform);
-void DrawLine(Vertex a, Vertex b, Color color, Viewport *viewport, Transform imageTransform);
-void DrawAxes(RenderingContext context);
-bool BackfaceCulled(Polygon *polygon);
-

@@ 1,33 0,0 @@
-#include "vertex_pool.h"
-#include <stdlib.h>
-#include <assert.h>
-
-#define VPOOL_SIZE 1000000
-
-VPool vpool_init()
-{
-	// number of used slots is in front of actual vertices
-	int *raw_pool = (int *)malloc(sizeof(Vertex)*VPOOL_SIZE + sizeof(int));
-	raw_pool[0] = 0;
-	VPool pool = (VPool)(raw_pool + 1);
-	return pool;
-}
-
-Vertex *vpool_new(VPool pool, double x, double y, double z, double w)
-{
-	assert(vpool_count(pool) < VPOOL_SIZE);
-	Vertex *v = &(pool[vpool_count(pool)]);
-	v->x = x;
-	v->y = y;
-	v->z = z;
-	v->w = w;
-	int *raw_pool = raw_pool(pool);
-	raw_pool[0]++;
-	return v;
-}
-
-void vpool_destroy(VPool pool)
-{
-	free(raw_pool(pool));
-}
-

@@ 1,12 0,0 @@
-#pragma once
-
-#include "abstract/vertex.h"
-
-typedef Vertex *VPool;
-
-VPool vpool_init();
-Vertex *vpool_new(VPool pool, double x, double y, double z, double w);
-void vpool_destroy(VPool pool);
-
-#define raw_pool(pool)		(((int *)(pool)) - 1)
-#define vpool_count(pool)	(raw_pool(pool)[0])

@@ 1,6 0,0 @@
-#pragma once
-
-#include "world/light.h"
-#include "world/mesh.h"
-#include "world/object.h"
-

@@ 1,72 0,0 @@
-#include "light.h"
-#include "../../arraylist.h"
-#include <stdlib.h>
-#include <math.h>
-#include <assert.h>
-
-static double ambient = 0.2;
-
-void AmbientLight(double amb)
-{
-	ambient = amb;
-}
-
-LightSource *PointLight(Vector position, double intensity)
-{
-	LightSource *l = malloc(sizeof(LightSource));
-	l->position = position;
-	l->intensity = intensity;
-	l->type = POINT_LIGHT;
-	return l;
-}
-
-SpotLightSource *SpotLight(Vector position, Vector direction, double spread, double intensity)
-{
-	SpotLightSource *l = malloc(sizeof(SpotLightSource));
-	l->light.position = position;
-	l->light.intensity = intensity;
-	l->light.type = SPOT_LIGHT;
-	l->direction = direction;
-	l->spread = spread;
-	return l;
-}
-
-double LightPolygon(Polygon *polygon, Color color, double glow, LightSource **lights)
-{
-	return fmin(glow + color * fmin((ambient + DiffuseLight(polygon, lights)), 1), 1);
-}
-
-double DiffuseLight(Polygon *polygon, LightSource **lights)
-{
-	double lightAmt = 0;
-	Vector n = PolygonNormal(polygon);
-	for (int i = 0; i < list_count(lights); i++) {
-		Vector v = PolygonCenter(polygon);
-		Vector l = VecSub(lights[i]->position, v);
-		Vector nl = NormalizeVector(l);
-		double dist = VecLen(l);
-		double attenuation = fmin(1/(0.9+0.1*dist+0.001*dist*dist), 1);
-		double incidence = DotProd(n, nl);
-
-		if (IsLit(lights[i], incidence, nl)) {
-			lightAmt += attenuation*incidence*lights[i]->intensity;
-		}
-	}
-	return lightAmt;
-}
-
-bool IsLit(LightSource *light, double incidence, Vector l)
-{
-	if (incidence < 0) {
-		return false;
-	}
-
-	if (light->type == SPOT_LIGHT) {
-		SpotLightSource *spotlight = (SpotLightSource *)light;
-		if (DotProd(spotlight->direction, NegVec(l)) < 1 - spotlight->spread) {
-			return false;
-		}
-	}
-
-	return true;
-}

@@ 1,27 0,0 @@
-#pragma once
-
-#include <stdint.h>
-#include "../abstract.h"
-
-typedef enum LightType {
-	POINT_LIGHT, SPOT_LIGHT
-} LightType;
-
-typedef struct LightSource {
-	LightType type;
-	Vertex position;
-	double intensity;
-} LightSource;
-
-typedef struct SpotLightSource {
-	LightSource light;
-	Vector direction;
-	double spread;
-} SpotLightSource;
-
-void AmbientLight(double amb);
-LightSource *PointLight(Vector position, double intensity);
-SpotLightSource *SpotLight(Vector position, Vector direction, double spread, double intensity);
-double LightPolygon(Polygon *polygon, Color color, double glow, LightSource **lights);
-double DiffuseLight(Polygon *polygon, LightSource **lights);
-bool IsLit(LightSource *light, double incidence, Vector l);

@@ 1,158 0,0 @@
-#include "mesh.h"
-#include "../../arraylist.h"
-#include <stdio.h>
-#include <string.h>
-
-Mesh *NewMesh(void)
-{
-	Mesh *obj = malloc(sizeof(Mesh));
-	obj->vertices = NULL;
-	obj->facets = NULL;
-	return obj;
-}
-
-void AddFacet(Mesh *mesh, Polygon *polygon)
-{
-	int i;
-	vIndex vi;
-	Vertex *vert;
-
-	/* replace facet's vList with indices into mesh's vertices;
-	   also make sure mesh has the same verts */
-	for (i = 0; i < NumVertices(polygon); i++) {
-		vert = PolygonVertex(polygon, i);
-
-		vi = FindVertex(mesh->vertices, vert);
-		if (vi == VERTEX_NOT_FOUND) {
-			vi = list_count(mesh->vertices);
-			/* this could change the vertices pointer, which won't automatically
-			 * be reflected in each of the mesh's facets */
-			list_push(mesh->vertices, polygon->vertices[i]);
-		}
-		polygon->vList[i] = vi;
-	}
-
-	/* replace facet's vertex list with mesh's */
-	list_free(polygon->vertices);
-	polygon->vertices = mesh->vertices;
-
-	/* also ensure facets have correct ref to vertices, since the list_push
-	 * may have changed the pointer */
-	for (i = 0; i < list_count(mesh->facets); i++) {
-		mesh->facets[i]->vertices = mesh->vertices;
-	}
-
-	list_push(mesh->facets, polygon);
-}
-
-int NumFacets(Mesh *mesh)
-{
-	return list_count(mesh->facets);
-}
-
-Mesh *TransformMesh(Mesh *obj, Transform t)
-{
-	for (int i = 0; i < list_count(obj->vertices); i++) {
-		CommitTransform(t, obj->vertices[i]);
-	}
-
-	return obj;
-}
-
-Mesh *LoadMesh(const char *filename)
-{
-	FILE *fp;
-	Mesh *m = NewMesh();
-	bool fileOk = true;
-	int line = 0;
-
-	fp = fopen(filename, "r");
-	while (!feof(fp) && fileOk) {
-		line++;
-		fileOk = ReadObjLine(fp, m);
-	}
-	fclose(fp);
-
-	if (!fileOk) {
-		printf("Error reading \"%s\" on line %d\n", filename, line+1);
-		return NULL;
-	}
-
-	return m;
-}
-
-bool ReadObjLine(FILE *fp, Mesh *mesh)
-{
-	char itemType[8];
-	if (fscanf(fp, "%8s", itemType) == 1) {
-		switch (ParseLineType(itemType)) {
-			case OBJ_VERTEX: 	return ReadObjVertex(fp, mesh);
-			case OBJ_FACE: 		return ReadObjFace(fp, mesh);
-			case OBJ_EMPTY: 	return true;
-			case OBJ_COMMENT:
-				fscanf(fp, "%*[^\n]\n"); // skip the rest of the line
-				return true;
-			case OBJ_UNKNOWN:
-				printf("Unknown \"%s\"\n", itemType);
-				return false;
-			default:
-				fscanf(fp, "%*[^\n]\n"); // skip the rest of the line
-				return true;
-		}
-	}
-	// no match, probably EOF
-	return true;
-}
-
-bool ReadObjVertex(FILE *fp, Mesh *mesh)
-{
-	float x, y, z, w;
-	bool match;
-
-	match = fscanf(fp, "%f", &x);
-	if (!match) return false;
-	match = fscanf(fp, "%f", &y);
-	if (!match) return false;
-	match = fscanf(fp, "%f", &z);
-	if (!match) return false;
-	match = fscanf(fp, "%f", &w);
-	if (!match) w = 1.0;
-
-	Vertex *v = NewVector4D(x, y, z, w);
-	list_push(mesh->vertices, v);
-	return true;
-}
-
-bool ReadObjFace(FILE *fp, Mesh *mesh)
-{
-	int vIndex;
-	Polygon *p = NewPolygon();
-	p->vertices = mesh->vertices;
-
-	while (fscanf(fp, "%d", &vIndex) == 1) {
-		list_push(p->vList, vIndex-1);
-		fscanf(fp, "/%*d"); // skip vt
-		fscanf(fp, "/%*d"); // skip vn
-	}
-
-	list_push(mesh->facets, p);
-	return true;
-}
-
-ObjLineType ParseLineType(const char *type)
-{
-	if (0 == strcmp(type, "v"))			return OBJ_VERTEX;
-	if (0 == strcmp(type, "f"))			return OBJ_FACE;
-	if (0 == strcmp(type, "vn"))		return OBJ_VNORMAL;
-	if (0 == strcmp(type, "vt"))		return OBJ_VTEXTURE;
-	if (0 == strcmp(type, "vp"))		return OBJ_VPARAM;
-	if (0 == strcmp(type, "g"))			return OBJ_GROUP;
-	if (0 == strcmp(type, "o"))			return OBJ_OBJECT;
-	if (0 == strcmp(type, "s"))			return OBJ_SMOOTH;
-	if (0 == strcmp(type, "mtllib"))	return OBJ_MTLLIB;
-	if (0 == strcmp(type, "usemtl"))	return OBJ_USEMTL;
-	if (0 == strcmp(type, "#"))			return OBJ_COMMENT;
-	if (0 == strcmp(type, " "))			return OBJ_EMPTY;
-	if (0 == strcmp(type, "\n"))		return OBJ_EMPTY;
-	return OBJ_UNKNOWN;
-}

@@ 1,35 0,0 @@
-#pragma once
-
-#include "../abstract.h"
-#include <stdio.h>
-
-typedef struct Mesh {
-	Vertex **vertices;	// list of vertices in all of the mesh's facets
-	Polygon **facets;
-} Mesh;
-
-typedef enum ObjLineType {
-	OBJ_VERTEX,
-	OBJ_FACE,
-	OBJ_VNORMAL,
-	OBJ_VTEXTURE,
-	OBJ_VPARAM,
-	OBJ_GROUP,
-	OBJ_OBJECT,
-	OBJ_SMOOTH,
-	OBJ_MTLLIB,
-	OBJ_USEMTL,
-	OBJ_COMMENT,
-	OBJ_EMPTY,
-	OBJ_UNKNOWN
-} ObjLineType;
-
-Mesh *NewMesh(void);
-void AddFacet(Mesh *object, Polygon *facet);
-int NumFacets(Mesh *mesh);
-Mesh *TransformMesh(Mesh *obj, Transform t);
-Mesh *LoadMesh(const char *filename);
-bool ReadObjLine(FILE *fp, Mesh *mesh);
-bool ReadObjVertex(FILE *fp, Mesh *mesh);
-bool ReadObjFace(FILE *fp, Mesh *mesh);
-ObjLineType ParseLineType(const char *type);

@@ 1,53 0,0 @@
-#include "object.h"
-#include <stdlib.h>
-
-Object *NewCube(Color color)
-{
-	Mesh *geometry = LoadMesh("assets/cube.obj");
-	return NewObject(geometry, color);
-}
-
-Object *NewGround(void)
-{
-	Mesh *geom = NewMesh();
-	Polygon *ground = NewPolygon();
-	AddVertex(ground, NewVector(1000, -1, 1000));
-	AddVertex(ground, NewVector(1000, -1, -1000));
-	AddVertex(ground, NewVector(-1000, -1, -1000));
-	AddVertex(ground, NewVector(-1000, -1, 1000));
-	AddFacet(geom, ground);
-	return NewObject(geom, GRAY);
-}
-
-Object *NewObject(Mesh *geom, Color color)
-{
-	Object *o = malloc(sizeof(Object));
-	o->geometry = geom;
-	o->transform = Identity();
-	o->position = V(0, 0, 0);
-	o->color = color;
-	o->glow = 0;
-	return o;
-}
-
-void RotateObj(Object *obj, double rx, double ry, double rz)
-{
-	RotateX(&obj->transform, rx);
-	RotateY(&obj->transform, ry);
-	RotateZ(&obj->transform, rz);
-}
-
-void ScaleObj(Object *obj, double sx, double sy, double sz)
-{
-	Scale(&obj->transform, sx, sy, sz);
-}
-
-void TranslateObj(Object *obj, Vector dv)
-{
-	Translate(&obj->transform, dv);
-}
-
-void PlaceObj(Object *obj, Vector p)
-{
-	obj->position = p;
-}

@@ 1,20 0,0 @@
-#pragma once
-
-#include "mesh.h"
-#include "../abstract.h"
-
-typedef struct Object {
-	Mesh *geometry;
-	Transform transform;
-	Vector position;
-	double color;
-	double glow;
-} Object;
-
-Object *NewObject(Mesh *geom, Color color);
-Object *NewCube(Color color);
-Object *NewGround(void);
-void RotateObj(Object *obj, double rx, double ry, double rz);
-void ScaleObj(Object *obj, double sx, double sy, double sz);
-void TranslateObj(Object *obj, Vector dv);
-void PlaceObj(Object *obj, Vector p);

@@ 1,35 0,0 @@
-#pragma once
-
-#define list_free(a)         ((a) ? free(list__sbraw(a)),0 : 0)
-#define list_push(a,v)        (list__sbmaybegrow(a,1), (a)[list__sbn(a)++] = (v))
-#define list_count(a)        ((a) ? list__sbn(a) : 0)
-#define list_last(a)         ((a)[list__sbn(a)-1])
-
-#define list__sbraw(a) ((int *) (void *) (a) - 2)
-#define list__sbm(a)   list__sbraw(a)[0]
-#define list__sbn(a)   list__sbraw(a)[1]
-
-#define list__sbneedgrow(a,n)  ((a)==0 || list__sbn(a)+(n) >= list__sbm(a))
-#define list__sbmaybegrow(a,n) (list__sbneedgrow(a,(n)) ? list__sbgrow(a,n) : 0)
-#define list__sbgrow(a,n)      (*((void **)&(a)) = list__sbgrowf((a), (n), sizeof(*(a))))
-
-#include <stdlib.h>
-
-static void *list__sbgrowf(void *arr, int increment, int itemsize)
-{
-	int dbl_cur = arr ? 2*list__sbm(arr) : 0;
-	int min_needed = list_count(arr) + increment;
-	int m = dbl_cur > min_needed ? dbl_cur : min_needed;
-	int *p = (int *) realloc(arr ? list__sbraw(arr) : 0, itemsize * m + sizeof(int)*2);
-	if (p) {
-		if (!arr)
-			p[1] = 0;
-		p[0] = m;
-		return p+2;
-	} else {
-		#ifdef STRETCHY_BUFFER_OUT_OF_MEMORY
-		STRETCHY_BUFFER_OUT_OF_MEMORY ;
-		#endif
-		return (void *) (2*sizeof(int)); // try to force a NULL pointer exception later
-	}
-}

@@ 1,16 0,0 @@
-#include "input.h"
-
-InputState KeyPressed(InputState input, KeySym key)
-{
-	return (input & key) == key;
-}
-
-InputState KeyDown(InputState input, KeySym key)
-{
-	return input | key;
-}
-
-InputState KeyUp(InputState input, KeySym key)
-{
-	return input & ~key;
-}

@@ 1,16 0,0 @@
-#pragma once
-
-#define NO_INPUT	0b00000000
-#define KEY_LEFT	0b00000001
-#define KEY_RIGHT	0b00000010
-#define KEY_FWD		0b00000100
-#define KEY_BACK	0b00001000
-#define KEY_JUMP	0b00010000
-
-typedef char KeySym;
-typedef char InputState;
-
-InputState KeyPressed(InputState input, KeySym key);
-InputState KeyDown(InputState input, KeySym key);
-InputState KeyUp(InputState input, KeySym key);
-

@@ 1,111 0,0 @@
-#include <SDL2/SDL.h>
-#include <stdio.h>
-
-#include "input.h"
-#include "sketch.h"
-
-unsigned int SCREEN_WIDTH = 400;
-unsigned int SCREEN_HEIGHT = 240;
-uint32_t *pixels;
-
-#define TICK_INTERVAL    30
-static Uint32 next_time;
-uint32_t time_left(void)
-{
-    uint32_t now;
-
-    now = SDL_GetTicks();
-    if(next_time <= now)
-        return 0;
-    else
-        return next_time - now;
-}
-
-InputState MapSDLInput(SDL_Keycode keyCode)
-{
-	switch (keyCode) {
-		case SDLK_LEFT:		return KEY_LEFT;
-		case SDLK_RIGHT:	return KEY_RIGHT;
-		case SDLK_UP:		return KEY_FWD;
-		case SDLK_DOWN:		return KEY_BACK;
-		case SDLK_SPACE:	return KEY_JUMP;
-		default:			return NO_INPUT;
-	}
-}
-
-#ifndef TEST
-int main(void)
-{
-	if (SDL_Init(SDL_INIT_VIDEO) == 0) {
-		SDL_Window* window = NULL;
-		SDL_Renderer* renderer = NULL;
-		SDL_Texture *texture = NULL;
-
-		if (SDL_CreateWindowAndRenderer(SCREEN_WIDTH, SCREEN_HEIGHT, 0, &window, &renderer) == 0) {
-		    texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, SCREEN_WIDTH, SCREEN_HEIGHT);
-		    pixels = malloc(sizeof(uint32_t)*SCREEN_WIDTH*SCREEN_HEIGHT);
-			SDL_bool done = SDL_FALSE;
-			SDL_Event event;
-
-			sketch_setup(pixels);
-			sketch_draw(SDL_GetTicks());
-
-			SDL_UpdateTexture(texture, NULL, pixels, SCREEN_WIDTH*sizeof(uint32_t));
-			SDL_RenderCopy(renderer, texture, NULL, NULL);
-			SDL_RenderPresent(renderer);
-
-		    next_time = SDL_GetTicks() + TICK_INTERVAL;
-
-			long frames = 0;
-			long start = SDL_GetTicks();
-			InputState input = NO_INPUT;
-			while (!done) {
-
-        		if (time_left() == 0) {
-			        next_time += TICK_INTERVAL;
-					frames++;
-					sketch_draw(SDL_GetTicks());
-					SDL_UpdateTexture(texture, NULL, pixels, SCREEN_WIDTH*sizeof(uint32_t));
-					SDL_RenderCopy(renderer, texture, NULL, NULL);
-					SDL_RenderPresent(renderer);
-
-				// close after 1 min
-				// if (SDL_GetTicks() > 1000*60) {
-				// 	done = SDL_TRUE;
-				// }
-
-					while (SDL_PollEvent(&event)) {
-						if (event.type == SDL_QUIT) {
-							done = SDL_TRUE;
-						} else if (event.type == SDL_KEYDOWN) {
-							input = KeyDown(input, MapSDLInput(event.key.keysym.sym));
-
-							// sketch_draw(SDL_GetTicks());
-							// SDL_UpdateTexture(texture, NULL, pixels, SCREEN_WIDTH*sizeof(uint32_t));
-							// SDL_RenderCopy(renderer, texture, NULL, NULL);
-							// SDL_RenderPresent(renderer);
-						} else if (event.type == SDL_KEYUP) {
-							input = KeyUp(input, MapSDLInput(event.key.keysym.sym));
-						}
-					}
-
-					sketch_input(input);
-				}
-			}
-			long time = (SDL_GetTicks() - start)/1000;
-			double fps = (double)frames/(double)time;
-			printf("%f fps\n", fps);
-		}
-
-		if (renderer) {
-			SDL_DestroyRenderer(renderer);
-		}
-		if (window) {
-			SDL_DestroyWindow(window);
-		}
-	}
-	SDL_Quit();
-	return 0;
-}
-
-#endif

@@ 1,42 0,0 @@
-#include "player.h"
-#include <stdlib.h>
-
-Player *NewPlayer(Vertex position)
-{
-	Player *player = malloc(sizeof(Player));
-
-	player->camera = NewCamera(position);
-	LookAt(V(0, position.y, 0), player->camera);
-
-	return player;
-}
-
-void PlayerTurnLeft(Player *player, double angle)
-{
-	RotateCamera(0, angle, 0, player->camera);
-}
-
-void PlayerTurnRight(Player *player, double angle)
-{
-	RotateCamera(0, -angle, 0, player->camera);
-}
-
-void PlayerMoveForward(Player *player, double amount)
-{
-	MoveCamera(VecMul(player->camera->direction, amount), player->camera);
-}
-
-void PlayerMoveBackward(Player *player, double amount)
-{
-	MoveCamera(VecMul(player->camera->direction, -amount), player->camera);
-}
-
-Vector PlayerDirection(Player *player)
-{
-	return player->camera->direction;
-}
-
-Vertex PlayerPosition(Player *player)
-{
-	return player->camera->position;
-}

@@ 1,15 0,0 @@
-#pragma once
-
-#include "3d.h"
-
-typedef struct Player {
-	Camera *camera;
-} Player;
-
-Player *NewPlayer(Vertex position);
-void PlayerTurnLeft(Player *player, double angle);
-void PlayerTurnRight(Player *player, double angle);
-void PlayerMoveForward(Player *player, double amount);
-void PlayerMoveBackward(Player *player, double amount);
-Vector PlayerDirection(Player *player);
-Vertex PlayerPosition(Player *player);

@@ 1,39 0,0 @@
-#include "scene.h"
-#include "arraylist.h"
-
-Scene *NewScene(void)
-{
-	Scene *s = malloc(sizeof(Scene));
-	s->objects = NULL;
-	s->lights = NULL;
-	s->points = NULL;
-	return s;
-}
-
-void AddObject(Scene *scene, Object *obj)
-{
-	list_push(scene->objects, obj);
-}
-
-void AddLight(Scene *scene, LightSource *light)
-{
-	list_push(scene->lights, light);
-}
-
-void AddPoint(Scene *scene, Point *point)
-{
-	list_push(scene->points, point);
-}
-
-void RenderScene(Scene *scene)
-{
-	Transform imageTransform = ComposeTransform(scene->context.projectionTransform, CameraTransform(scene->context.camera));
-
-	for (int i = 0; i < list_count(scene->objects); i++) {
-		DrawObject(scene->objects[i], scene->lights, scene->context, imageTransform);
-	}
-
-	for (int i = 0; i < list_count(scene->points); i++) {
-		DrawPoint(scene->points[i], scene->context, imageTransform);
-	}
-}

@@ 1,22 0,0 @@
-#pragma once
-
-#include "3d.h"
-#include "player.h"
-#include "input.h"
-
-typedef void (*SceneUpdate)(struct Scene *scene, int dt);
-
-typedef struct Scene {
-	Object **objects;
-	Point **points;
-	LightSource **lights;
-	Player *player;
-	RenderingContext context;
-	SceneUpdate onUpdate;
-} Scene;
-
-Scene *NewScene(void);
-void AddObject(Scene *scene, Object *obj);
-void AddLight(Scene *scene, LightSource *light);
-void AddPoint(Scene *scene, Point *point);
-void RenderScene(Scene *scene);

@@ 1,61 0,0 @@
-#include "cubeworld.h"
-
-#include "../player.h"
-#include <stdlib.h>
-#include <math.h>
-
-static Object *masterCube;
-
-Scene *CubeWorld(void)
-{
-	Scene *scene = NewScene();
-	scene->onUpdate = &UpdateCubeWorld;
-
-	AmbientLight(0.1);
-	LightSource *cubeLight = PointLight(V(0, 2, 0), 1);
-	AddLight(scene, cubeLight);
-
-	AddObject(scene, NewGround());
-
-	for (int i = 0; i < 500; i++) {
-		Object *cube = NewCube(WHITE);
-		RotateObj(cube, 0, rand() % 360, 0);
-		int azimuth = rand() % 360;
-		int dist = rand() % 100+10;
-		double x = dist*cos(Rad(azimuth));
-		double z = dist*sin(Rad(azimuth));
-		PlaceObj(cube, V(x, 0, z));
-		AddObject(scene, cube);
-	}
-
-	for (int i = 0; i < 500; i++) {
-		int azimuth = rand() % 360;
-		int altitude = rand() % 90;
-		int dist = 1000;
-		double x = dist*cos(Rad(azimuth));
-		double z = dist*sin(Rad(azimuth));
-		double y = dist*sin(Rad(altitude));
-		Point *p = NewPoint(V(x, y, z), WHITE);
-		AddPoint(scene, p);
-	}
-
-	masterCube = NewCube(DK_GRAY);
-	masterCube->glow = 1;
-	PlaceObj(masterCube, V(0, 2, 0));
-	AddObject(scene, masterCube);
-
-	Object *ob = NewObject(LoadMesh("assets/obelisk.obj"), WHITE);
-	TranslateObj(ob, V(100, -1, 0));
-	RotateObj(ob, 0, rand() % 360, 0);
-	AddObject(scene, ob);
-
-	scene->player = NewPlayer(V(0, 0, -100));
-
-	return scene;
-}
-
-void UpdateCubeWorld(Scene *scene, int dt)
-{
-	RotateObj(masterCube, 0, 0.01*dt, 0);
-	RotateObj(masterCube, 0.01*dt, 0, 0);
-}

@@ 1,7 0,0 @@
-#pragma once
-
-#include "../3d.h"
-#include "../scene.h"
-
-Scene *CubeWorld(void);
-void UpdateCubeWorld(Scene *scene, int dt);

@@ 1,65 0,0 @@
-#include "moonworld.h"
-
-#include "../player.h"
-#include <stdlib.h>
-#include <math.h>
-
-// static Object *masterCube;
-
-Scene *MoonWorld(void)
-{
-	Scene *scene = NewScene();
-	scene->onUpdate = &UpdateMoonWorld;
-
-	AmbientLight(0.1);
-	LightSource *cubeLight = PointLight(V(0, 2, 0), 1);
-	AddLight(scene, cubeLight);
-
-	// AddObject(scene, NewGround());
-  Object *moon = NewObject(LoadMesh("assets/moon.obj"), WHITE);
-  ScaleObj(moon, 10, 10, 10);
-  AddObject(scene, moon);
-
-	// for (int i = 0; i < 500; i++) {
-	// 	Object *cube = NewCube(WHITE);
-	// 	RotateObj(cube, 0, rand() % 360, 0);
-	// 	int azimuth = rand() % 360;
-	// 	int dist = rand() % 100+10;
-	// 	double x = dist*cos(Rad(azimuth));
-	// 	double z = dist*sin(Rad(azimuth));
-	// 	PlaceObj(cube, V(x, 0, z));
-	// 	AddObject(scene, cube);
-	// }
-
-	for (int i = 0; i < 500; i++) {
-		int azimuth = rand() % 360;
-		int altitude = rand() % 90;
-		int dist = 1000;
-		double x = dist*cos(Rad(azimuth));
-		double z = dist*sin(Rad(azimuth));
-		double y = dist*sin(Rad(altitude));
-		Point *p = NewPoint(V(x, y, z), WHITE);
-		AddPoint(scene, p);
-	}
-
-	// masterCube = NewCube(DK_GRAY);
-	// masterCube->glow = 1;
-	// PlaceObj(masterCube, V(0, 2, 0));
-	// AddObject(scene, masterCube);
-
-	// Object *ob = NewObject(LoadMesh("assets/obelisk.obj"), WHITE);
-	// TranslateObj(ob, V(100, -1, 0));
-	// RotateObj(ob, 0, rand() % 360, 0);
-	// AddObject(scene, ob);
-
-	scene->player = NewPlayer(V(0, 10, -1));
-
-	return scene;
-}
-
-void UpdateMoonWorld(Scene *scene, int dt)
-{
-	StandOn(scene->camera)
-	// RotateObj(masterCube, 0, 0.01*dt, 0);
-	// RotateObj(masterCube, 0.01*dt, 0, 0);
-}

@@ 1,7 0,0 @@
-#pragma once
-
-#include "../3d.h"
-#include "../scene.h"
-
-Scene *MoonWorld(void);
-void UpdateMoonWorld(Scene *scene, int dt);

@@ 1,68 0,0 @@
-#include "sketch.h"
-#include "arraylist.h"
-#include "scenes/moonworld.h"
-#include "scenes/cubeworld.h"
-#include "player.h"
-#include <assert.h>
-
-int debounce = 0;
-bool dither = false;
-Scene *scene;
-static SpotLightSource *flashlight;
-int now, lastTime;
-RenderingContext context;
-
-void sketch_setup(Pixel *pixels)
-{
-	Viewport *viewport = NewViewport(pixels, BLACK, 400, 240);
-	RasterSettings settings = DefaultRasterSettings();
-	settings.showWireframes = true;
-	scene = MoonWorld();
-	Camera *camera = scene->player->camera;
-	Projection *projection = NewPerspectiveProjection(60, 400/240.f, 1, 100);
-	context = MakeRenderingContext(viewport, camera, PerspectiveTransform(projection), settings);
-
-	flashlight = SpotLight(camera->position, camera->direction, 0.1, 0);
-	AddLight(scene, (LightSource *)flashlight);
-}
-
-void sketch_draw(long ticks)
-{
-	int dt = ticks - lastTime;
-	lastTime = ticks;
-	ClearViewport(context.viewport);
-
-	(*(scene->onUpdate))(scene, dt);
-	RenderScene(scene, context);
-
-	if (dither) {
-		Dither(context.viewport);
-	}
-}
-
-void sketch_input(InputState input)
-{
-	if (KeyPressed(input, KEY_LEFT)) {
-		PlayerTurnLeft(scene->player, 5);
-		flashlight->direction = PlayerDirection(scene->player);
-	}
-	if (KeyPressed(input, KEY_RIGHT)) {
-		PlayerTurnRight(scene->player, 5);
-		flashlight->direction = PlayerDirection(scene->player);
-	}
-	if (KeyPressed(input, KEY_FWD)) {
-		PlayerMoveForward(scene->player, 0.5);
-		((LightSource *)flashlight)->position = PlayerPosition(scene->player);
-	}
-	if (KeyPressed(input, KEY_BACK)) {
-		PlayerMoveBackward(scene->player, 0.5);
-		((LightSource *)flashlight)->position = PlayerPosition(scene->player);
-	}
-	if (debounce == 0 && KeyPressed(input, KEY_JUMP)) {
-		debounce = 10;
-		// dither = !dither;
-		((LightSource *)flashlight)->intensity = (((LightSource *)flashlight)->intensity) ? 0 : 0.5;
-	}
-
-	if (debounce > 0) debounce--;
-}

@@ 1,8 0,0 @@
-#pragma once
-
-#include "input.h"
-#include "3d.h"
-
-void sketch_setup(Pixel *pixels);
-void sketch_draw(long ticks);
-void sketch_input(InputState input);

@@ 1,27 0,0 @@
-#pragma once
-
-#include <stdbool.h>
-
-extern bool gTestPassed;
-
-void __AssertEqual(const char *a, const char *b, double aVal, double bVal,
-	const char *func, const char *file, int line);
-#define AssertEqual(A, B)	(void)(gTestPassed && (((A) == (B)) || (__AssertEqual(#A, #B, (double)A, (double)B, __func__, __FILE__, __LINE__),0)))
-
-void __AssertPixel(const char *x, const char *y, const char *c,
-	int xVal, int yVal,
-	const char *func, const char *file, int line);
-#define AssertPixel(X, Y, C, V)	(void)(gTestPassed && (((GetPixel(X, Y, V)) == (C)) || (__AssertPixel(#X, #Y, #C, X, Y, __func__, __FILE__, __LINE__),0)))
-
-void __AssertTrue(const char *ex,
-	const char *func, const char *file, int line);
-#define AssertTrue(A)		(void)(gTestPassed && (((A)) || (__AssertTrue(#A, __func__, __FILE__, __LINE__),0)))
-
-void __AssertFalse(const char *ex,
-	const char *func, const char *file, int line);
-#define AssertFalse(A)		(void)(gTestPassed && ((!(A)) || (__AssertFalse(#A, __func__, __FILE__, __LINE__),0)))
-
-void __AssertWithin(const char *ex, const char *min, const char *max,
-	double exVal, double minVal, double maxVal,
-	const char *func, const char *file, int line);
-#define AssertWithin(EX, MIN, MAX)	(void)(gTestPassed && (((EX) >= (MIN) && (EX) <= (MAX)) || (__AssertWithin(#EX, #MIN, #MAX, EX, MIN, MAX, __func__, __FILE__, __LINE__),0)))

@@ 1,48 0,0 @@
-#include "assertions.h"
-#include <stdio.h>
-
-extern bool gTestPassed;
-
-void __AssertEqual(const char *a, const char *b, double aVal, double bVal,
-	const char *func, const char *file, int line)
-{
-	gTestPassed = false;
-	printf("*** In %s (%s:%d):\n", func, file, line);
-	printf("        AssertEqual(%s, %s)\n", a, b);
-	printf("    Expected %.2f to equal %.2f.\n\n", aVal, bVal);
-}
-
-void __AssertPixel(const char *x, const char *y, const char *c,
-	int xVal, int yVal,
-	const char *func, const char *file, int line)
-{
-	gTestPassed = false;
-	printf("*** In %s (%s:%d):\n", func, file, line);
-	printf("        AssertPixel(%s, %s, %s)\n", x, y, c);
-	printf("    Expected pixel at (%d, %d) to be %s.\n\n", xVal, yVal, c);
-}
-
-void __AssertTrue(const char *ex, const char *func, const char *file, int line)
-{
-	gTestPassed = false;
-	printf("*** In %s (%s:%d):\n", func, file, line);
-	printf("    Expected %s to be true.\n\n", ex);
-}
-
-void __AssertFalse(const char *ex, const char *func, const char *file, int line)
-{
-	gTestPassed = false;
-	printf("*** In %s (%s:%d):\n", func, file, line);
-	printf("    Expected %s to be false.\n\n", ex);
-}
-
-void __AssertWithin(
-	const char *ex, const char *min, const char *max,
-	double exVal, double minVal, double maxVal,
-	const char *func, const char *file, int line)
-{
-	gTestPassed = false;
-	printf("*** In %s (%s:%d):\n", func, file, line);
-	printf("        AssertWithin(%s, %s, %s)\n", ex, min, max);
-	printf("    Expected %.2f to be within %.2f and %.2f.\n\n", exVal, minVal, maxVal);
-}>
\ No newline at end of file

@@ 1,193 0,0 @@
-#include "tests.h"
-
-void ClippingTests(void)
-{
-	DoTest(&TestClipLine);
-	DoTest(&TestVertexInside);
-	DoTest(&TestClipIntersect);
-	DoTest(&TestClipPolygonPlane);
-	DoTest(&TestClipPolygon);
-}
-
-void TestClipLine(void)
-{
-	bool visible;
-	Vector a;
-	Vector b;
-
-	a = V4D(  0.18,   0.00,  -0.97, 1);
-	b = V4D(  0.18,   5.55,  -0.97, 1);
-	visible = ClipLine(&a, &b);
-	AssertTrue(visible);
-	AssertWithin(a.x, -1, 1);
-	AssertWithin(a.y, -1, 1);
-	AssertWithin(a.z, -1, 1);
-	AssertWithin(b.x, -1, 1);
-	AssertWithin(b.y, -1, 1);
-	AssertWithin(b.z, -1, 1);
-
-	a = V4D(  3.02,   0.00,  -0.45, 1);
-	b = V4D(  3.02,  95.18,  -0.45, 1);
-	visible = ClipLine(&a, &b);
-	AssertFalse(visible);
-
-	a = V4D(  0.00,   0.00,  -0.99, 1);
-	b = V4D(  0.00,  -1.43,  -0.97, 1);
-	visible = ClipLine(&a, &b);
-	AssertTrue(visible);
-	AssertWithin(a.x, -1, 1);
-	AssertWithin(a.y, -1, 1);
-	AssertWithin(a.z, -1, 1);
-	AssertWithin(b.x, -1, 1);
-	AssertWithin(b.y, -1, 1);
-	AssertWithin(b.z, -1, 1);
-
-	a = V4D(10.929176, 0.000000, 0.569507, 0.431063);
-	b = V4D(11.047228, 0.000000, 1.568198, -0.566630);
-	visible = ClipLine(&a, &b);
-	AssertFalse(visible);
-
-	a = V4D(  0.00,  -3.46,  -5.01, 6);
-	b = V4D(  0.00,  -3.46,   996, -994);
-	visible = ClipLine(&a, &b);
-	AssertTrue(visible);
-	AssertWithin(a.x, -a.w, a.w);
-	AssertWithin(a.y, -a.w, a.w);
-	AssertWithin(a.z, -a.w, a.w);
-	AssertWithin(b.x, -b.w, b.w);
-	AssertWithin(b.y, -b.w, b.w);
-	AssertWithin(b.z, -b.w, b.w);
-}
-
-void TestVertexInside(void)
-{
-	Vertex p = V4D(1, 0, 0, 2);
-	Vertex q = V4D(2.5, 0, 0, 2);
-	Vertex r = V4D(-2, 0, 0, -1);
-	Vertex s = V4D(0, 0, 0, -2);
-	Plane x_pos = Pl(V4D(0, 0, 0, 0), V4D(1, 0, 0, -1));
-	Plane x_neg = Pl(V4D(0, 0, 0, 0), V4D(-1, 0, 0, -1));
-	AssertTrue(VertexInside(&p, x_pos));
-	AssertTrue(VertexInside(&p, x_neg));
-	AssertFalse(VertexInside(&q, x_pos));
-	AssertTrue(VertexInside(&q, x_neg));
-	AssertTrue(VertexInside(&r, x_pos));
-	AssertFalse(VertexInside(&r, x_neg));
-	AssertFalse(VertexInside(&s, x_pos));
-	AssertFalse(VertexInside(&s, x_neg));
-}
-
-void TestClipIntersect(void)
-{
-	Vertex s = V4D(4, 0, 0, 2);
-	Vertex p = V4D(1, 0, 0, 2);
-	Plane x_pos = Pl(V4D(0, 0, 0, 0), V4D(1, 0, 0, -1));
-	Vertex i = ClipIntersect(&s, &p, x_pos);
-	AssertTrue(VectorEqual(i, V4D(2, 0, 0, 2)));
-
-	s = V(-1.3, 0, 0);
-	p = V( 0.1, 0, 0);
-	Plane x_neg = Pl(V4D(0, 0, 0, 0), V4D(-1,  0,  0, -1));
-	i = ClipIntersect(&s, &p, x_neg);
-	AssertTrue(VectorEqual(i, V4D(-1, 0, 0, 1)));
-
-	s = V4D(+8.9960098267e-02, +1.7320507765e+00, +2.6407814026e-01, +1.7344551086e+00);
-	p = V4D(-3.2262287140e+00, +1.7320507765e+00, +8.4350967407e-01, +1.1561794281e+00);
-	i = ClipIntersect(&s, &p, x_neg);
-	Vertex v = Homogenize(i);
-	AssertTrue(v.x >= -1);
-}
-
-void TestClipPolygonPlane(void)
-{
-	Plane x_neg = Pl(V4D(0, 0, 0, 0), V4D(-1, 0, 0, -1));
-	Plane x_pos = Pl(V4D(0, 0, 0, 0), V4D(1, 0, 0, -1));
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVector4D(1.2247448713915885, 1.7320508075688776, 0.77071482817625591, 1.2247448713915903));
-	AddVertex(p, NewVector4D(4.5708100863428234, 1.7320508075688776, 0.24261940281555505, 1.7423829615966344));
-	AddVertex(p, NewVector4D(4.5708100863428234, -1.7320508075688776, 0.24261940281555505, 1.7423829615966344));
-	AddVertex(p, NewVector4D(1.2247448713915885, -1.7320508075688776, 0.77071482817625591, 1.2247448713915903));
-	ClipPolygonPlane(&p, x_neg);
-	ClipPolygonPlane(&p, x_pos);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex *v = PolygonVertex(p, i);
-		AssertTrue(v->x <= v->w);
-		AssertTrue(v->x >= -v->w);
-	}
-}
-
-void TestClipPolygon(void)
-/* Clips polygons to be within -1 <= x, y <= 1; -1 <= z <= 1 */
-{
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVector(0.1, 0.1, 0));
-	AddVertex(p, NewVector(0.1, 0.9, 0));
-	AddVertex(p, NewVector(-1.3, 0.5, 0));
-	AssertEqual(NumVertices(p), 3);
-	bool visible = ClipPolygon(&p);
-	AssertTrue(visible);
-	AssertEqual(NumVertices(p), 4);
-	FreePolygon(p);
-
-	p = NewPolygon();
-	AddVertex(p, NewVector(0.2, 0.2, 0));
-	AddVertex(p, NewVector(0.3, 0.2, 0));
-	AddVertex(p, NewVector(0.2, 0.3, 0));
-	AssertEqual(NumVertices(p), 3);
-	visible = ClipPolygon(&p);
-	AssertTrue(visible);
-	AssertEqual(NumVertices(p), 3);
-	FreePolygon(p);
-
-	p = NewPolygon();
-	AddVertex(p, NewVector( -4.76,   0.75,  -1.22));
-	AddVertex(p, NewVector(-37.34,   3.38,  -1.98));
-	AddVertex(p, NewVector(  3.86,  -0.42,  -1.88));
-	AddVertex(p, NewVector(  3.39,  -0.74,  -1.79));
-	visible = ClipPolygon(&p);
-	AssertFalse(visible);
-	FreePolygon(p);
-
-	p = NewPolygon();
-	AddVertex(p, NewVector4D(+8.9960098267e-02, +1.7320507765e+00, +2.6407814026e-01, +1.7344551086e+00));
-	AddVertex(p, NewVector4D(-3.2262287140e+00, +1.7320507765e+00, +8.4350967407e-01, +1.1561794281e+00));
-	AddVertex(p, NewVector4D(-3.2262287140e+00, -1.7320507765e+00, +8.4350967407e-01, +1.1561794281e+00));
-	AddVertex(p, NewVector4D(+8.9960098267e-02, -1.7320507765e+00, +2.6407814026e-01, +1.7344551086e+00));
-	visible = ClipPolygon(&p);
-	AssertTrue(visible);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex v = Homogenize(*PolygonVertex(p, i));
-		AssertEqual(v.w, 1);
-		AssertWithin(v.x, -1, 1);
-		AssertWithin(v.y, -1, 1);
-		AssertWithin(v.z, -1, 1);
-	}
-	FreePolygon(p);
-
-	p = NewPolygon();
-	AddVertex(p, NewVector4D( +2.1238925109378464e+00, +1.7320508075688776e+00, +9.4117255305726744e-01, +1.0587099095862040e+00 ));
-	AddVertex(p, NewVector4D( -1.2739654549598711e+00, +1.7320508075688776e+00, +5.5113702891196237e-01, +1.4479661419749759e+00 ));
-	AddVertex(p, NewVector4D( -1.2739654549598711e+00, -1.7320508075688776e+00, +5.5113702891196237e-01, +1.4479661419749759e+00 ));
-	AddVertex(p, NewVector4D( +2.1238925109378464e+00, -1.7320508075688776e+00, +9.4117255305726744e-01, +1.0587099095862040e+00 ));
-	visible = ClipPolygon(&p);
-	AssertTrue(visible);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex v = Homogenize(*PolygonVertex(p, i));
-		AssertEqual(v.w, 1);
-		AssertWithin(v.x, -1, 1);
-		AssertWithin(v.y, -1, 1);
-		AssertWithin(v.z, -1, 1);
-	}
-	FreePolygon(p);
-
-	// weird test case
-	p = NewPolygon();
-	AddVertex(p, NewVector4D(1.2247448713915885, 1.7320508075688776, 0.77071482817625591, 1.2247448713915903));
-	AddVertex(p, NewVector4D(4.5708100863428234, 1.7320508075688776, 0.24261940281555505, 1.7423829615966344));
-	AddVertex(p, NewVector4D(4.5708100863428234, -1.7320508075688776, 0.24261940281555505, 1.7423829615966344));
-	AddVertex(p, NewVector4D(1.2247448713915885, -1.7320508075688776, 0.77071482817625591, 1.2247448713915903));
-	visible = ClipPolygon(&p);
-	AssertFalse(visible);
-	// AssertTrue(NumVertices(p) >= 3);
-	FreePolygon(p);
-}

@@ 1,23 0,0 @@
-#include "tests.h"
-
-void ColorTests(void)
-{
-	DoTest(&TestColorPixel);
-	DoTest(&TestPixelColor);
-}
-
-void TestColorPixel(void)
-{
-	AssertEqual(ColorPixel(WHITE), 0xFFFFFFFF);
-	AssertEqual(ColorPixel(BLACK), 0xFF000000);
-	AssertEqual(ColorPixel(GRAY),  0xFF7F7F7F);
-	AssertEqual(ColorPixel(DK_GRAY), 0xFF545454);
-	AssertEqual(ColorPixel(LT_GRAY), 0xFFAAAAAA);
-}
-
-void TestPixelColor(void)
-{
-	AssertEqual(PixelColor(0xFFFFFFFF), WHITE);
-	AssertEqual(PixelColor(0x00000000), BLACK);
-	AssertWithin(PixelColor(0xFF7F7F7F), GRAY-0.01, GRAY+0.01);
-}

@@ 1,106 0,0 @@
-#include "tests.h"
-
-void EndpointTests(void)
-{
-	DoTest(&TestMakeEdgeTable);
-	DoTest(&TestInsertEndpoints);
-	DoTest(&TestRemoveEndpoints);
-	DoTest(&TestIncrementEndpoints);
-}
-
-void TestMakeEdgeTable(void)
-{
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(84.5299454, 124.948715, 0));
-	AddVertex(p, NewVertex(78.7564544, 125.196152, 0));
-	AddVertex(p, NewVertex(78.7564544, 114.803848, 0));
-	AddVertex(p, NewVertex(84.5299454, 115.051285, 0));
-	Endpoint **table = MakeEdgeTable(240, p);
-	AssertTrue(table);
-	FreeEdgeTable(table, 240);
-	FreePolygon(p);
-}
-
-void TestInsertEndpoints(void)
-{
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(84.5299454, 124.948715, 0));
-	AddVertex(p, NewVertex(78.7564544, 125.196152, 0));
-	AddVertex(p, NewVertex(78.7564544, 114.803848, 0));
-	AddVertex(p, NewVertex(84.5299454, 115.051285, 0));
-	Endpoint **table = MakeEdgeTable(240, p);
-	Endpoint *list = NULL;
-
-	for (int i = 0; i < 114; i++) {
-		InsertEndpoints(&list, table[i]);
-		AssertEqual(ListLength(list), 0);
-	}
-	InsertEndpoints(&list, table[114]);
-	AssertEqual(ListLength(list), 2);
-	InsertEndpoints(&list, table[115]);
-	AssertEqual(ListLength(list), 3);
-	for (int i = 116; i < 124; i++) {
-		InsertEndpoints(&list, table[i]);
-		AssertEqual(ListLength(list), 3);
-	}
-	InsertEndpoints(&list, table[124]);
-	AssertEqual(ListLength(list), 4);
-	for (int i = 125; i < 240; i++) {
-		InsertEndpoints(&list, table[i]);
-		AssertEqual(ListLength(list), 4);
-	}
-
-	FreeEdgeTable(table, 240);
-	FreePolygon(p);
-}
-
-void TestRemoveEndpoints(void)
-{
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(84.5299454, 124.948715, 0));
-	AddVertex(p, NewVertex(78.7564544, 125.196152, 0));
-	AddVertex(p, NewVertex(78.7564544, 114.803848, 0));
-	AddVertex(p, NewVertex(84.5299454, 115.051285, 0));
-	Endpoint **table = MakeEdgeTable(240, p);
-	Endpoint *list = NULL;
-	InsertEndpoints(&list, table[114]);
-	InsertEndpoints(&list, table[115]);
-	InsertEndpoints(&list, table[124]);
-
-	AssertEqual(ListLength(list), 4);
-	RemoveEndpoints(&list, 115);
-	AssertEqual(ListLength(list), 3);
-	RemoveEndpoints(&list, 124);
-	AssertEqual(ListLength(list), 2);
-	RemoveEndpoints(&list, 125);
-	AssertEqual(ListLength(list), 0);
-
-	FreeEdgeTable(table, 240);
-	FreePolygon(p);
-}
-
-void TestIncrementEndpoints(void)
-{
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(84.5299454, 124.948715, 0));
-	AddVertex(p, NewVertex(78.7564544, 125.196152, 0));
-	AddVertex(p, NewVertex(78.7564544, 114.803848, 0));
-	AddVertex(p, NewVertex(84.5299454, 115.051285, 0));
-	Endpoint **table = MakeEdgeTable(240, p);
-	Endpoint *list = NULL;
-	InsertEndpoints(&list, table[114]);
-	AssertEqual(ListLength(list), 2);
-	AssertWithin(list->x, 78, 79);
-	AssertEqual(list->xinc, 0);
-	AssertWithin(list->next->x, 78, 79);
-	AssertWithin(list->next->xinc, 23, 24);
-
-	AssertWithin(list->next->ymax, 115, 116);
-
-	IncrementEndpoints(&list, 114);
-	AssertWithin(list->x, 78, 79);
-	AssertWithin(list->next->x, 78, 85);
-
-	FreeEdgeTable(table, 240);
-	FreePolygon(p);
-}

@@ 1,32 0,0 @@
-#include "tests.h"
-#include <math.h>
-
-void LightTests(void)
-{
-	DoTest(&TestDiffuseLight);
-}
-
-void TestDiffuseLight(void)
-{
-	LightSource **lights = NULL;
-	LightSource *zlight = PointLight(V(0, 0, INFINITY), 1);
-	list_push(lights, zlight);
-
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(1, 1, 0));
-	AddVertex(p, NewVertex(-1, 1, 0));
-	AddVertex(p, NewVertex(-1, -1, 0));
-	AddVertex(p, NewVertex(1, -1, 0));
-
-	double shade = DiffuseLight(p, lights);
-	// AssertEqual(shade, 1.0);
-
-	Polygon *q = FromPolygon(p, RotationY(90));
-	shade = DiffuseLight(q, lights);
-	// AssertEqual(shade, 0);
-
-	FreePolygon(p);
-	FreePolygon(q);
-	free(zlight);
-	list_free(lights);
-}

@@ 1,35 0,0 @@
-#include "tests.h"
-#include "assertions.h"
-#include <stdio.h>
-
-static int gTestFailures = 0;
-static int gTestSuccesses = 0;
-bool gTestPassed = true;
-
-void DoTest(TestFunc test)
-{
-	(*test)();
-	if (gTestPassed) {
-		gTestSuccesses++;
-	} else {
-		gTestFailures++;
-	}
-	gTestPassed = true;
-}
-
-int main(void)
-{
-	ColorTests();
-	TransformTests();
-	ProjectionTests();
-	ClippingTests();
-	RenderTests();
-	EndpointTests();
-	RasterizationTests();
-	LightTests();
-	ModelTests();
-	PerformanceTests();
-
-	printf("=================================\n");
-	printf("%d passed, %d failed.\n", gTestSuccesses, gTestFailures);
-}

@@ 1,12 0,0 @@
-#include "tests.h"
-
-void ModelTests(void)
-{
-	DoTest(&TestLoadMesh);
-}
-
-void TestLoadMesh(void)
-{
-	Mesh *m = LoadMesh("assets/teapot.obj");
-	AssertTrue(m != NULL);
-}>
\ No newline at end of file

@@ 1,53 0,0 @@
-#include "tests.h"
-#include <time.h>
-#include <stdio.h>
-#include <math.h>
-#include "../src/scene.h"
-
-void PerformanceTests(void)
-{
-	DoTest(&TestRandomTriangles);
-}
-
-void TestRandomTriangles(void)
-{
-	Scene *scene = NewScene();
-	LightSource *light = PointLight(V(0, 2, 0), 1);
-	AddLight(scene, light);
-
-	for (int i = 0; i < 10000; ++i) {
-		Polygon *tri = NewPolygon();
-		AddVertex(tri, NewVector(0, 0, 0));
-		AddVertex(tri, NewVector(0, 10, 0));
-		AddVertex(tri, NewVector(10, 0, 0));
-		Mesh *mesh = NewMesh();
-		AddFacet(mesh, tri);
-		Object *obj = NewObject(mesh, GRAY);
-
-		RotateObj(obj, 0, rand() % 360, 0);
-		int azimuth = rand() % 360;
-		int dist = rand() % 100+10;
-		double x = dist*cos(Rad(azimuth));
-		double z = dist*sin(Rad(azimuth));
-		PlaceObj(obj, V(x, 0, z));
-		AddObject(scene, obj);
-	}
-
-	Pixel *pixels = malloc(sizeof(Pixel)*400*240);
-	Viewport *viewport = NewViewport(pixels, BLACK, 400, 240);
-	RasterSettings settings = DefaultRasterSettings();
-	Camera *camera = NewCamera(V(0, 0, 0));
-	LookAt(V(0, 0, -1), camera);
-	Projection *projection = NewPerspectiveProjection(60, 400/240.f, 1, 100);
-	RenderingContext context = MakeRenderingContext(viewport, camera, PerspectiveTransform(projection), settings);
-
-	float clocksPerMs = CLOCKS_PER_SEC/1000;
-	float startTime = (float)clock()/(clocksPerMs);
-	RenderScene(scene, context);
-	float endTime = (float)clock()/(clocksPerMs);
-	float renderTime = (endTime - startTime);
-
-	float targetTime = (1/30.f)*1000; // one frame, ~33 ms
-	printf("Render time: %.2fms (target: %.2fms)\n", renderTime, targetTime);
-	// AssertWithin(renderTime, 0, targetTime);
-}

@@ 1,110 0,0 @@
-#include "tests.h"
-#include <math.h>
-
-void ProjectionTests(void)
-{
-	DoTest(&TestPerspectiveProjection);
-	DoTest(&TestViewmapPolygon);
-	DoTest(&TestCameraPosition);
-}
-
-void TestPerspectiveProjection(void)
-{
-	Projection *projection = NewPerspectiveProjection(90, 1, 1, 2);
-	Camera *camera = NewCamera(V(0, 0, 0));
-	Transform t = GetProjectionTransform(camera, projection);
-
-	Transform ct = CameraTransform(camera);
-	AssertTrue(IsIdentity(ct));
-
-	Vertex p = V(0, 1, -1);
-	Vertex q = Homogenize(ProjectPoint(p, t));
-	AssertTrue(VertexEqual(q, V(0, 1, 1)));
-
-	p = V(0, -1, -1);
-	q = Homogenize(ProjectPoint(p, t));
-	AssertTrue(VertexEqual(q, V(0, -1, 1)));
-
-	p = V(0, 2, -2);
-	q = Homogenize(ProjectPoint(p, t));
-	AssertTrue(VertexEqual(q, V(0, 1, -1)));
-
-	p = V(0, -2, -2);
-	q = Homogenize(ProjectPoint(p, t));
-	AssertTrue(VertexEqual(q, V(0, -1, -1)));
-}
-
-void TestViewmapPolygon(void)
-{
-	InitDeviceTransform(400, 240);
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVector(-0.921176, -1.000000, 1.000000));
-	AddVertex(p, NewVector(1.000000, -1.000000, 0.559785));
-	AddVertex(p, NewVector(1.000000, 1.000000, 0.559785));
-	AddVertex(p, NewVector(-0.921176, 1.000000, 1.000000));
-
-	ViewmapPolygon(p);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex *v = PolygonVertex(p, i);
-		AssertTrue(v->x >= 0);
-		AssertTrue(v->x < 400);
-		AssertTrue(v->y >= 0);
-		AssertTrue(v->y < 240);
-	}
-	FreePolygon(p);
-
-	p = NewPolygon();
-	AddVertex(p, NewVector(0.757628, -1.000000, 1.000000));
-	AddVertex(p, NewVector(0.757628, 1.000000, 1.000000));
-	AddVertex(p, NewVector(-1.000000, 1.000000, 0.574397));
-	AddVertex(p, NewVector(-1.000000, -1.000000, 0.574397));
-
-	ViewmapPolygon(p);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex *v = PolygonVertex(p, i);
-		AssertTrue(v->x >= 0);
-		AssertTrue(v->x < 400);
-		AssertTrue(v->y >= 0);
-		AssertTrue(v->y < 240);
-	}
-	FreePolygon(p);
-
-
-	p = NewPolygon();
-	AddVertex(p, NewVector(0.90350350893137943, 1.7320508075688776, 1.1582046473758254));
-	AddVertex(p, NewVector(-2.0841785003064004, 1.7320508075688776, 0.14396012337173758));
-	AddVertex(p, NewVector(-2.0841785003064004, -1.7320508075688776, 0.14396012337173758));
-	AddVertex(p, NewVector(0.90350350893137943, -1.7320508075688776, 1.1582046473758254));
-	ClipPolygon(&p);
-	HomogenizePolygon(p);
-	ViewmapPolygon(p);
-	for (int i = 0; i < NumVertices(p); i++) {
-		Vertex *v = PolygonVertex(p, i);
-		AssertTrue(v->x >= 0);
-		AssertTrue(v->x < 400);
-		AssertTrue(v->y >= 0);
-		AssertTrue(v->y < 240);
-	}
-	FreePolygon(p);
-}
-
-void TestCameraPosition(void)
-{
-	Camera *camera = NewCamera(V(10, 20, -3));
-	Vector p = camera->position;
-	AssertEqual(p.x, 10);
-	AssertEqual(p.y, 20);
-	AssertEqual(p.z, -3);
-
-	MoveCamera(V(1, 1, 1), camera);
-	p = camera->position;
-	AssertEqual(p.x, 11);
-	AssertEqual(p.y, 21);
-	AssertEqual(p.z, -2);
-
-	RotateCamera(0, 130, 0, camera);
-	p = camera->position;
-	AssertEqual(p.x, 11);
-	AssertEqual(p.y, 21);
-	AssertEqual(p.z, -2);
-}

@@ 1,116 0,0 @@
-#include "tests.h"
-#include <stdlib.h>
-
-void RasterizationTests(void)
-{
-	DoTest(&TestRasterLine);
-	DoTest(&TestRasterPolygon);
-	DoTest(&TestRasterTriangle);
-}
-
-void TestRasterLine(void)
-{
-	Pixel *pixels = malloc(sizeof(Pixel)*100*100);
-	Viewport *viewport = NewViewport(pixels, WHITE, 100, 100);
-	DisableDepthBuffer(viewport);
-
-	ClearViewport(viewport);
-	Vertex a = V(5, 8, 0);
-	Vertex b = V(9, 11, 0);
-	RasterLine(a, b, BLACK, viewport);
-	AssertPixel(4, 7, WHITE, viewport);
-	AssertPixel(4, 8, WHITE, viewport);
-	AssertPixel(5, 8, BLACK, viewport);
-	AssertPixel(6, 9, BLACK, viewport);
-	AssertPixel(7, 9, BLACK, viewport);
-	AssertPixel(7, 8, WHITE, viewport);
-	AssertPixel(8, 9, WHITE, viewport);
-	AssertPixel(8, 10, BLACK, viewport);
-	AssertPixel(9, 11, BLACK, viewport);
-	AssertPixel(10, 11, WHITE, viewport);
-	AssertPixel(10, 12, WHITE, viewport);
-
-	ClearViewport(viewport);
-
-	RasterLine(b, a, BLACK, viewport);
-	AssertPixel(4, 7, WHITE, viewport);
-	AssertPixel(4, 8, WHITE, viewport);
-	AssertPixel(5, 8, BLACK, viewport);
-	AssertPixel(6, 9, BLACK, viewport);
-	AssertPixel(7, 9, BLACK, viewport);
-	AssertPixel(7, 8, WHITE, viewport);
-	AssertPixel(8, 9, WHITE, viewport);
-	AssertPixel(8, 10, BLACK, viewport);
-	AssertPixel(9, 11, BLACK, viewport);
-	AssertPixel(10, 11, WHITE, viewport);
-	AssertPixel(10, 12, WHITE, viewport);
-
-	ClearViewport(viewport);
-
-	b = V(7, 13, 0);
-	RasterLine(a, b, BLACK, viewport);
-	AssertPixel(5, 7, WHITE, viewport);
-	AssertPixel(5, 8, BLACK, viewport);
-	AssertPixel(5, 9, BLACK, viewport);
-	AssertPixel(6, 10, BLACK, viewport);
-	AssertPixel(6, 11, BLACK, viewport);
-	AssertPixel(7, 12, BLACK, viewport);
-	AssertPixel(7, 13, BLACK, viewport);
-	AssertPixel(7, 14, WHITE, viewport);
-
-	ClearViewport(viewport);
-
-	RasterLine(b, a, BLACK, viewport);
-	AssertPixel(5, 7, WHITE, viewport);
-	AssertPixel(5, 8, BLACK, viewport);
-	AssertPixel(5, 9, BLACK, viewport);
-	AssertPixel(6, 10, BLACK, viewport);
-	AssertPixel(6, 11, BLACK, viewport);
-	AssertPixel(7, 12, BLACK, viewport);
-	AssertPixel(7, 13, BLACK, viewport);
-	AssertPixel(7, 14, WHITE, viewport);
-
-	free(pixels);
-}
-
-void TestRasterPolygon(void)
-{
-	Pixel *pixels = malloc(sizeof(Pixel)*400*240);
-	Viewport *viewport = NewViewport(pixels, WHITE, 400, 240);
-	RasterSettings settings = { false };
-	Polygon *p = NewPolygon();
-	AddVertex(p, NewVertex(84.5299454, 124.948715, 0));
-	AddVertex(p, NewVertex(78.7564544, 125.196152, 0));
-	AddVertex(p, NewVertex(78.7564544, 114.803848, 0));
-	AddVertex(p, NewVertex(84.5299454, 115.051285, 0));
-	RasterPolygon(p, BLACK, viewport, settings);
-
-	// bounding box should stay white
-	for (int x = 78; x < 85; x++) {
-		AssertPixel(x, 113, WHITE, viewport);
-		AssertPixel(x, 126, WHITE, viewport);
-	}
-	for (int y = 114; y < 126; y++) {
-		AssertPixel(77, y, WHITE, viewport);
-		AssertPixel(85, y, WHITE, viewport);
-	}
-
-	free(pixels);
-	FreePolygon(p);
-}
-
-void TestRasterTriangle(void)
-{
-	Pixel *pixels = malloc(sizeof(Pixel)*400*240);
-	Viewport *viewport = NewViewport(pixels, WHITE, 400, 240);
-
-	Polygon *t = NewPolygon();
-	AddVertex(t, NewVertex(1, 1, 0));
-	AddVertex(t, NewVertex(2, 10, 0));
-	AddVertex(t, NewVertex(7, 3, 0));
-
-	RasterTriangle(t, BLACK);
-	// TODO: assert pixels
-
-	FreePolygon(t);
-}