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Fixed pattern offset in FillRectangle

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This commit is contained in:
Sasha Koshka 2023-01-21 15:19:34 -05:00
parent 92a9c9370d
commit 55633d6915
1 changed files with 7 additions and 2 deletions
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9
artist/rectangle.go
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@ -38,16 +38,21 @@ func FillRectangle (
updatedRegion image.Rectangle, updatedRegion image.Rectangle,
) { ) {
data, stride := destination.Buffer() data, stride := destination.Buffer()
realWidth, realHeight := bounds.Dx(), bounds.Dy() realBounds := bounds
bounds = bounds.Canon().Intersect(destination.Bounds()).Canon() bounds = bounds.Canon().Intersect(destination.Bounds()).Canon()
if bounds.Empty() { return } if bounds.Empty() { return }
updatedRegion = bounds updatedRegion = bounds
realWidth, realHeight := realBounds.Dx(), realBounds.Dy()
patternOffset := realBounds.Min.Sub(bounds.Min)
width, height := bounds.Dx(), bounds.Dy() width, height := bounds.Dx(), bounds.Dy()
for y := 0; y < height; y ++ { for y := 0; y < height; y ++ {
for x := 0; x < width; x ++ { for x := 0; x < width; x ++ {
data[x + bounds.Min.X + (y + bounds.Min.Y) * stride] = data[x + bounds.Min.X + (y + bounds.Min.Y) * stride] =
source.AtWhen(x, y, realWidth, realHeight) source.AtWhen (
x - patternOffset.X, y - patternOffset.Y,
realWidth, realHeight)
}} }}
return return
} }