10cd99ef4d989df128af45e440ea9011ff8044af — Leon Rische 5 months ago ef2a9e6
Document user interface
2 files changed, 22 insertions(+), 3 deletions(-)

M Makefile
M Makefile => Makefile +3 -1
@@ 1,7 1,9 @@

	$(CC) quad.c -L/usr/local/lib -lSDL2 -lm -o quad
	$(CC) quad.c -lSDL2 -lm -o quad

run: all


M README.md => README.md +19 -2
@@ 1,9 1,26 @@
# Quad

Needs the `sdl2-dev` package, run with `make`.

![Sierpinski Triangle](https://www.leonrische.me/pages/images/quad/quad1.png)

## Installation

Depends on the `sdl2-dev` package.
Run with `make run`.

## Interface

1. There are 8 rules
2. Rules are referenced by a small squares indicating their position in
   the editor interface
3. Each rule has one slot for each quadrant of the image
4. Each rule has a fallback slot that's used when a square gets too
   small to be subdivided further
5. Slots can contain patterns or references to rules
6. The fallback slot can only contain a pattern
7. To place a pattern in a slot, drag it from the pallette at the top
8. To place a reference to a rule in a slot, drag its small squares (the
   larger square region below it) into the slot

## Controls

- `q` quit