35 lines
679 B
Go
35 lines
679 B
Go
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package main
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import (
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"image"
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"image/color"
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"opslag.de/schobers/tins2020/img"
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)
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func colorImage(path string, col color.Color) error {
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src, err := img.DecodeImage(path)
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if err != nil {
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return err
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}
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colNRGBA := color.NRGBAModel.Convert(col).(color.NRGBA)
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bounds := src.Bounds()
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dst := image.NewRGBA(bounds)
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for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
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for x := bounds.Min.X; x < bounds.Max.X; x++ {
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c := src.At(x, y)
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srcCol := color.NRGBAModel.Convert(c).(color.NRGBA)
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if srcCol.A > 0 {
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dstCol := colNRGBA
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dstCol.A = srcCol.A
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dst.Set(x, y, dstCol)
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} else {
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dst.Set(x, y, c)
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}
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}
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}
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return img.EncodePNG(path, dst)
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return nil
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}
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