diff options
Diffstat (limited to 'sixel.go')
| -rw-r--r-- | sixel.go | 10 |
1 files changed, 3 insertions, 7 deletions
@@ -13,16 +13,12 @@ import ( "slices" ) -func divRound(n, d uint32) uint32 { - return (n + d/2) / d -} - type sixelRGB struct { r, g, b int8 } func (c sixelRGB) RGBA() (r, g, b, a uint32) { - return divRound(uint32(c.r)*0xffff, 100), divRound(uint32(c.g)*0xffff, 100), divRound(uint32(c.b)*0xffff, 100), 0xffff + return uint32(c.r) * 0xffff / 100, uint32(c.g) * 0xffff / 100, uint32(c.b) * 0xffff / 100, 0xffff } var defaultSixelPalette color.Palette @@ -31,7 +27,7 @@ func init() { defaultSixelPalette = slices.Grow(color.Palette{color.Transparent}, len(palette.WebSafe)) for _, c := range palette.WebSafe { r, g, b, _ := c.RGBA() - defaultSixelPalette = append(defaultSixelPalette, sixelRGB{int8(divRound(r*100, 0xffff)), int8(divRound(g*100, 0xffff)), int8(divRound(b*100, 0xffff))}) + defaultSixelPalette = append(defaultSixelPalette, sixelRGB{int8(r * 100 / 0xffff), int8(g * 100 / 0xffff), int8(b * 100 / 0xffff)}) } } @@ -44,7 +40,7 @@ func sixelizePalette(p color.Palette) color.Palette { includeTransparent = true continue } - result = append(result, sixelRGB{r: int8(divRound(r*100, 0xffff)), g: int8(divRound(g*100, 0xffff)), b: int8(divRound(b*100, 0xffff))}) + result = append(result, sixelRGB{r: int8(r * 100 / 0xffff), g: int8(g * 100 / 0xffff), b: int8(b * 100 / 0xffff)}) } if includeTransparent { result = append(color.Palette{color.Transparent}, result...) |