aw/go-resize
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boolToUint: true -> 1

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This commit is contained in:
jst 2012-12-11 20:35:47 +01:00
parent a32116ce4a
commit bf09bbe0a3
1 changed files with 6 additions and 6 deletions
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12
filters.go
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@ -36,9 +36,9 @@ func clampToUint16(x float32) (y uint16) {
func boolToUint(b bool) (i uint) { func boolToUint(b bool) (i uint) {
if b { if b {
i = 0
} else {
i = 1 i = 1
} else {
i = 0
} }
return return
@ -60,12 +60,12 @@ type filterModel struct {
tempRow, tempCol []colorArray tempRow, tempCol []colorArray
} }
func (f *filterModel) convolution1d(x float32, p []colorArray, isRow bool) colorArray { func (f *filterModel) convolution1d(x float32, p []colorArray, isCol bool) colorArray {
var k float32 var k float32
var sum float32 = 0 var sum float32 = 0
c := colorArray{0.0, 0.0, 0.0, 0.0} c := colorArray{0.0, 0.0, 0.0, 0.0}
index := boolToUint(isRow) index := boolToUint(isCol)
for j := range p { for j := range p {
k = f.kernel((x - float32(j)) / f.factor[index]) k = f.kernel((x - float32(j)) / f.factor[index])
@ -91,10 +91,10 @@ func (f *filterModel) Interpolate(x, y float32) color.RGBA64 {
for j := 0; j < len(f.tempRow); j++ { for j := 0; j < len(f.tempRow); j++ {
f.tempRow[j] = f.at(xf+j, yf+i) f.tempRow[j] = f.at(xf+j, yf+i)
} }
f.tempCol[i] = f.convolution1d(x, f.tempRow, true) f.tempCol[i] = f.convolution1d(x, f.tempRow, false)
} }
c := f.convolution1d(y, f.tempCol, false) c := f.convolution1d(y, f.tempCol, true)
return color.RGBA64{ return color.RGBA64{
clampToUint16(c[0]), clampToUint16(c[0]),
clampToUint16(c[1]), clampToUint16(c[1]),