keelan
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resize
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Dst pixel coordinate fix

disintegration 9 years ago
parent
53e9ca890b
commit
0feec06645
1 changed files with 3 additions and 3 deletions
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  1. 3
    3
      filters.go

+ 3
- 3
filters.go View File 

@@ -87,7 +87,7 @@ func createWeights8(dy, filterLength int, blur, scale float64, kernel func(float
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 	coeffs := make([]int16, dy*filterLength)
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 	start := make([]int, dy)
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 	for y := 0; y < dy; y++ {
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-		interpX := scale * (float64(y) + 0.5)
90 
+		interpX := scale*(float64(y)+0.5) - 0.5
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 		start[y] = int(interpX) - filterLength/2 + 1
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 		interpX -= float64(start[y])
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 		for i := 0; i < filterLength; i++ {
 
@@ -107,7 +107,7 @@ func createWeights16(dy, filterLength int, blur, scale float64, kernel func(floa
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 	coeffs := make([]int32, dy*filterLength)
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 	start := make([]int, dy)
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 	for y := 0; y < dy; y++ {
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-		interpX := scale * (float64(y) + 0.5)
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+		interpX := scale*(float64(y)+0.5) - 0.5
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 		start[y] = int(interpX) - filterLength/2 + 1
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 		interpX -= float64(start[y])
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 		for i := 0; i < filterLength; i++ {
 
@@ -126,7 +126,7 @@ func createWeightsNearest(dy, filterLength int, blur, scale float64) ([]bool, []
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 	coeffs := make([]bool, dy*filterLength)
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 	start := make([]int, dy)
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 	for y := 0; y < dy; y++ {
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-		interpX := scale * (float64(y) + 0.5)
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+		interpX := scale*(float64(y)+0.5) - 0.5
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 		start[y] = int(interpX) - filterLength/2 + 1
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 		interpX -= float64(start[y])
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 		for i := 0; i < filterLength; i++ {