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graphics: Refactoring: remove drawWithFittingScale

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This commit is contained in:
Hajime Hoshi 2018-02-25 03:12:33 +09:00
parent 0cc456b534
commit c7a733fb16
1 changed files with 10 additions and 19 deletions
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29
image.go
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@ -41,21 +41,6 @@ func init() {
_ = emptyImage.ReplacePixels(pix)
}
func drawWithFittingScale(dst *Image, src *Image, colorM *ColorM, filter Filter) {
wd, hd := dst.Size()
ws, hs := src.Size()
sw := float64(wd) / float64(ws)
sh := float64(hd) / float64(hs)
op := &DrawImageOptions{}
op.GeoM.Scale(sw, sh)
if colorM != nil {
op.ColorM = *colorM
}
op.CompositeMode = CompositeModeCopy
op.Filter = filter
_ = dst.DrawImage(src, op)
}
// Image represents a rectangle set of pixels.
// The pixel format is alpha-premultiplied RGBA.
// Image implements image.Image.
@ -93,16 +78,22 @@ func (i *Image) Fill(clr color.Color) error {
}
func (i *Image) fill(r, g, b, a uint8) {
var c *ColorM
wd, hd := i.Size()
ws, hs := emptyImage.Size()
sw := float64(wd) / float64(ws)
sh := float64(hd) / float64(hs)
op := &DrawImageOptions{}
op.GeoM.Scale(sw, sh)
if a > 0 {
c = &ColorM{}
rf := float64(r) / float64(a)
gf := float64(g) / float64(a)
bf := float64(b) / float64(a)
af := float64(a) / 0xff
c.Translate(rf, gf, bf, af)
op.ColorM.Translate(rf, gf, bf, af)
}
drawWithFittingScale(i, emptyImage, c, FilterNearest)
op.CompositeMode = CompositeModeCopy
op.Filter = FilterNearest
_ = i.DrawImage(emptyImage, op)
}
// DrawImage draws the given image on the image i.