aw/go-resize
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Merge branch 'pixel_coordinate' of https://github.com/disintegration/resize into disintegration-pixel_coordinate

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jst 2015-03-27 19:49:21 +01:00
commit b8fbe1cf50
1 changed files with 3 additions and 3 deletions
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6
filters.go
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@ -87,7 +87,7 @@ func createWeights8(dy, filterLength int, blur, scale float64, kernel func(float
coeffs := make([]int16, dy*filterLength) coeffs := make([]int16, dy*filterLength)
start := make([]int, dy) start := make([]int, dy)
for y := 0; y < dy; y++ { for y := 0; y < dy; y++ {
interpX := scale * (float64(y) + 0.5) interpX := scale*(float64(y)+0.5) - 0.5
start[y] = int(interpX) - filterLength/2 + 1 start[y] = int(interpX) - filterLength/2 + 1
interpX -= float64(start[y]) interpX -= float64(start[y])
for i := 0; i < filterLength; i++ { for i := 0; i < filterLength; i++ {
@ -107,7 +107,7 @@ func createWeights16(dy, filterLength int, blur, scale float64, kernel func(floa
coeffs := make([]int32, dy*filterLength) coeffs := make([]int32, dy*filterLength)
start := make([]int, dy) start := make([]int, dy)
for y := 0; y < dy; y++ { for y := 0; y < dy; y++ {
interpX := scale * (float64(y) + 0.5) interpX := scale*(float64(y)+0.5) - 0.5
start[y] = int(interpX) - filterLength/2 + 1 start[y] = int(interpX) - filterLength/2 + 1
interpX -= float64(start[y]) interpX -= float64(start[y])
for i := 0; i < filterLength; i++ { for i := 0; i < filterLength; i++ {
@ -126,7 +126,7 @@ func createWeightsNearest(dy, filterLength int, blur, scale float64) ([]bool, []
coeffs := make([]bool, dy*filterLength) coeffs := make([]bool, dy*filterLength)
start := make([]int, dy) start := make([]int, dy)
for y := 0; y < dy; y++ { for y := 0; y < dy; y++ {
interpX := scale * (float64(y) + 0.5) interpX := scale*(float64(y)+0.5) - 0.5
start[y] = int(interpX) - filterLength/2 + 1 start[y] = int(interpX) - filterLength/2 + 1
interpX -= float64(start[y]) interpX -= float64(start[y])
for i := 0; i < filterLength; i++ { for i := 0; i < filterLength; i++ {