crunchy-rocks/draw2d
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gofmt

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This commit is contained in:
Laurent Le Goff 2011-04-14 22:22:57 +02:00
parent a8724418ad
commit 3065973abc
4 changed files with 147 additions and 158 deletions
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32
draw2d/rgba_interpolation.go
View file

@ -26,18 +26,15 @@ func getColorBilinear(img image.Image, x, y float64) image.Color {
dx := x - x0
dy := y - y0
c0 := img.At(int(x0), int(y0))
c1 := img.At(int(x0+1), int(y0))
c2 := img.At(int(x0+1), int(y0+1))
c3 := img.At(int(x0), int(y0+1))
rt, gt, bt, at := c0.RGBA()
rt, gt, bt, at := img.At(int(x0), int(y0)).RGBA()
r0, g0, b0, a0 := float64(rt), float64(gt), float64(bt), float64(at)
rt, gt, bt, at = c1.RGBA()
rt, gt, bt, at = img.At(int(x0+1), int(y0)).RGBA()
r1, g1, b1, a1 := float64(rt), float64(gt), float64(bt), float64(at)
rt, gt, bt, at = c2.RGBA()
rt, gt, bt, at = img.At(int(x0+1), int(y0+1)).RGBA()
r2, g2, b2, a2 := float64(rt), float64(gt), float64(bt), float64(at)
rt, gt, bt, at = c3.RGBA()
rt, gt, bt, at = img.At(int(x0), int(y0+1)).RGBA()
r3, g3, b3, a3 := float64(rt), float64(gt), float64(bt), float64(at)
r := int(lerp(lerp(r0, r1, dx), lerp(r3, r2, dx), dy))
g := int(lerp(lerp(g0, g1, dx), lerp(g3, g2, dx), dy))
b := int(lerp(lerp(b0, b1, dx), lerp(b3, b2, dx), dy))
@ -102,18 +99,6 @@ func cubic(offset, v0, v1, v2, v3 float64) uint32 {
(-9*v0+9*v2))*offset + (v0 + 16*v1 + v2)) / 18.0)
}
func compose(c1, c2 image.Color) image.Color {
r1, g1, b1, a1 := c1.RGBA()
r2, g2, b2, a2 := c2.RGBA()
ia := M - a2
r := ((r1 * ia) / M) + r2
g := ((g1 * ia) / M) + g2
b := ((b1 * ia) / M) + b2
a := ((a1 * ia) / M) + a2
return image.RGBAColor{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
}
func DrawImage(src image.Image, dest draw.Image, tr MatrixTransform, op draw.Op, filter ImageFilter) {
bounds := src.Bounds()
x0, y0, x1, y1 := float64(bounds.Min.X), float64(bounds.Min.Y), float64(bounds.Max.X), float64(bounds.Max.Y)
@ -121,6 +106,7 @@ func DrawImage(src image.Image, dest draw.Image, tr MatrixTransform, op draw.Op,
var x, y, u, v float64
var c1, c2, cr image.Color
var r, g, b, a, ia, r1, g1, b1, a1, r2, g2, b2, a2 uint32
var color image.RGBAColor
for x = x0; x < x1; x++ {
for y = y0; y < y1; y++ {
u = x
@ -144,7 +130,11 @@ func DrawImage(src image.Image, dest draw.Image, tr MatrixTransform, op draw.Op,
g = ((g1 * ia) / M) + g2
b = ((b1 * ia) / M) + b2
a = ((a1 * ia) / M) + a2
cr = image.RGBAColor{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
color.R = uint8(r >> 8)
color.G = uint8(g >> 8)
color.B = uint8(b >> 8)
color.A = uint8(a >> 8)
cr = color
default:
cr = c2
}

2
draw2d/stack_gc.go
View file

@ -30,7 +30,7 @@ type ContextStack struct {
/**
* Create a new Graphic context from an image
*/
func NewStackGraphicContext() (*StackGraphicContext){
func NewStackGraphicContext() *StackGraphicContext {
gc := &StackGraphicContext{}
gc.current = new(ContextStack)
gc.current.Tr = NewIdentityMatrix()

1
draw2dgl/gc.go
View file

@ -1,2 +1 @@
package draw2dgl