From bb815b96d680a95dffcd37f85c943e1957eb47ed Mon Sep 17 00:00:00 2001
From: Sebastien Binet <s@sbinet.org>
Date: Sat, 11 Sep 2021 16:33:31 +0200
Subject: [PATCH] font/fixed: add convenience method to convert Int12_20 to
 Int26_6

Signed-off-by: Sebastien Binet <s@sbinet.org>
---
 font/fixed/int12_20.go | 9 +++++++++
 go.mod                 | 2 ++
 go.sum                 | 5 +++++
 3 files changed, 16 insertions(+)
 create mode 100644 go.sum

diff --git a/font/fixed/int12_20.go b/font/fixed/int12_20.go
index a4be82f..2842d5d 100644
--- a/font/fixed/int12_20.go
+++ b/font/fixed/int12_20.go
@@ -7,6 +7,8 @@ package fixed
 import (
 	"fmt"
 	"strconv"
+
+	"golang.org/x/image/math/fixed"
 )
 
 // Int12_20 is a signed 12.20 fixed-point number.
@@ -31,6 +33,7 @@ func ParseInt12_20(s string) (Int12_20, error) {
 	return Int12_20(f * (1 << 20)), nil
 }
 
+// Float64 converts the 12.20 fixed-point number to a floating point one.
 func (x Int12_20) Float64() float64 {
 	v := int32(x)
 	return float64(v) / (1 << 20)
@@ -51,3 +54,9 @@ func (x Int12_20) String() string {
 	}
 	return "-2048:00" // The minimum value is -(1<<(12-1)).
 }
+
+// ToInt26_6 converts the 12.20 fixed-point number to a 26.6 one.
+func (x Int12_20) ToInt26_6() fixed.Int26_6 {
+	f := x.Float64()
+	return fixed.Int26_6(f * (1 << 6))
+}
diff --git a/go.mod b/go.mod
index bc2c355..b25cc79 100644
--- a/go.mod
+++ b/go.mod
@@ -10,3 +10,5 @@ retract (
 	v0.1.1
 	v0.1.0
 )
+
+require golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..7e318f7
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,5 @@
+golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d h1:RNPAfi2nHY7C2srAV8A49jpsYr0ADedCk1wq6fTMTvs=
+golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
+golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-- 
2.34.2