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graphics: Refactoring

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This commit is contained in:
Hajime Hoshi 2016-07-16 00:11:37 +09:00
parent ea285afb96
commit 9366b35d65
1 changed files with 11 additions and 9 deletions
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20
pixels.go
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@ -30,6 +30,8 @@ type drawImageHistoryItem struct {
mode opengl.CompositeMode
}
// basePixels and baseColor are exclusive.
type pixels struct {
basePixels []uint8
baseColor color.Color
@ -59,6 +61,7 @@ func (p *pixels) fill(clr color.Color) {
func (p *pixels) appendDrawImageHistory(item *drawImageHistoryItem) {
p.drawImageHistory = append(p.drawImageHistory, item)
// TODO: Consider the number of the vertices, which should not exceed the max number (#245).
}
func (p *pixels) at(image *graphics.Image, idx int, context *opengl.Context) (color.Color, error) {
@ -114,20 +117,19 @@ func (p *pixels) restore(context *opengl.Context, width, height int, filter Filt
for j := 0; j < height; j++ {
copy(img.Pix[j*img.Stride:], p.basePixels[j*width*4:(j+1)*width*4])
}
} else if p.baseColor != nil {
r32, g32, b32, a32 := p.baseColor.RGBA()
r, g, b, a := uint8(r32), uint8(g32), uint8(b32), uint8(a32)
for idx := 0; idx < len(img.Pix)/4; idx++ {
img.Pix[4*idx] = r
img.Pix[4*idx+1] = g
img.Pix[4*idx+2] = b
img.Pix[4*idx+3] = a
}
}
gimg, err := graphics.NewImageFromImage(img, glFilter(filter))
if err != nil {
return nil, err
}
if p.baseColor != nil {
if p.basePixels != nil {
panic("not reach")
}
if err := gimg.Fill(p.baseColor); err != nil {
return nil, err
}
}
for _, c := range p.drawImageHistory {
// c.image.impl must be already restored.
if c.image.impl.hasHistory() {