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lightest() function
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| func (c LightestOperation) lightest(color1, color2 color.RGBA) color.Color { | |
| if c.luminance(color1) > c.luminance(color2) { | |
| return color1 | |
| } else { | |
| return color2 | |
| } | |
| } | |
| func (c LightestOperation) luminance(someColor color.Color) uint32 { | |
| r, g, b, _ := someColor.RGBA() | |
| return uint32(0.2126*float32(r) + 0.7152*float32(g) + 0.0722*float32(b)) | |
| } |
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