aw/go-resize
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Use x,y as coordinates of the origin image.

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This commit is contained in:
jst 2013-11-23 18:02:18 +01:00
parent d1bef9bdb6
commit d9287fbcb6
1 changed files with 10 additions and 10 deletions
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20
resize.go
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@ -63,13 +63,13 @@ func Resize(width, height uint, img image.Image, interp InterpolationFunction) i
filter := interp(img, float32(clampFactor(scaleX)))
var u float32
var color color.RGBA64
for y := b.Min.X; y < b.Max.X; y++ {
for x := b.Min.Y; x < b.Max.Y; x++ {
u = scaleX*(float32(x)+adjust) + float32(oldBounds.Min.X)
for y := b.Min.Y; y < b.Max.Y; y++ {
for x := b.Min.X; x < b.Max.X; x++ {
u = scaleX*(float32(y)+adjust) + float32(oldBounds.Min.X)
color = filter.Interpolate(u, y)
color = filter.Interpolate(u, x)
i := tempImg.PixOffset(y, x)
i := tempImg.PixOffset(x, y)
tempImg.Pix[i+0] = uint8(color.R >> 8)
tempImg.Pix[i+1] = uint8(color.R)
tempImg.Pix[i+2] = uint8(color.G >> 8)
@ -97,13 +97,13 @@ func Resize(width, height uint, img image.Image, interp InterpolationFunction) i
filter := interp(tempImg, float32(clampFactor(scaleY)))
var u float32
var color color.RGBA64
for y := b.Min.X; y < b.Max.X; y++ {
for x := b.Min.Y; x < b.Max.Y; x++ {
u = scaleY*(float32(x)+adjust) + float32(oldBounds.Min.Y)
for y := b.Min.Y; y < b.Max.Y; y++ {
for x := b.Min.X; x < b.Max.X; x++ {
u = scaleY*(float32(y)+adjust) + float32(oldBounds.Min.Y)
color = filter.Interpolate(u, y)
color = filter.Interpolate(u, x)
i := resultImg.PixOffset(y, x)
i := resultImg.PixOffset(x, y)
resultImg.Pix[i+0] = uint8(color.R >> 8)
resultImg.Pix[i+1] = uint8(color.R)
resultImg.Pix[i+2] = uint8(color.G >> 8)