draw using color palette rather than RGB directly.
This commit is contained in:
parent
82b0b0a386
commit
575791cfc1
5 changed files with 277 additions and 14 deletions
262
graphics/palette.go
Normal file
262
graphics/palette.go
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package graphics
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import "github.com/pnx/go-raytracer/math"
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var Palette = [256]math.Color{
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{R: 0, G: 0, B: 0},
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{R: 0, G: 0, B: 168},
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{R: 0, G: 168, B: 0},
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{R: 0, G: 168, B: 168},
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{R: 168, G: 0, B: 0},
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{R: 168, G: 0, B: 168},
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{R: 168, G: 84, B: 0},
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{R: 168, G: 168, B: 168},
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{R: 84, G: 84, B: 84},
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{R: 84, G: 84, B: 252},
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{R: 84, G: 252, B: 84},
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{R: 84, G: 252, B: 252},
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{R: 252, G: 84, B: 84},
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{R: 252, G: 84, B: 252},
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{R: 252, G: 252, B: 84},
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{R: 252, G: 252, B: 252},
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{R: 236, G: 236, B: 236},
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{R: 220, G: 220, B: 220},
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{R: 208, G: 208, B: 208},
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{R: 192, G: 192, B: 192},
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{R: 180, G: 180, B: 180},
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{R: 168, G: 168, B: 168},
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{R: 152, G: 152, B: 152},
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{R: 140, G: 140, B: 140},
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{R: 124, G: 124, B: 124},
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{R: 112, G: 112, B: 112},
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{R: 100, G: 100, B: 100},
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{R: 84, G: 84, B: 84},
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{R: 72, G: 72, B: 72},
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{R: 56, G: 56, B: 56},
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{R: 44, G: 44, B: 44},
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{R: 32, G: 32, B: 32},
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{R: 252, G: 0, B: 0},
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{R: 236, G: 0, B: 0},
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{R: 224, G: 0, B: 0},
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{R: 212, G: 0, B: 0},
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{R: 200, G: 0, B: 0},
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{R: 188, G: 0, B: 0},
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{R: 176, G: 0, B: 0},
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{R: 164, G: 0, B: 0},
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{R: 152, G: 0, B: 0},
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{R: 136, G: 0, B: 0},
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{R: 124, G: 0, B: 0},
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{R: 112, G: 0, B: 0},
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{R: 100, G: 0, B: 0},
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{R: 88, G: 0, B: 0},
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{R: 76, G: 0, B: 0},
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{R: 64, G: 0, B: 0},
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{R: 252, G: 216, B: 216},
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{R: 252, G: 184, B: 184},
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{R: 252, G: 156, B: 156},
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{R: 252, G: 124, B: 124},
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{R: 252, G: 92, B: 92},
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{R: 252, G: 64, B: 64},
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{R: 252, G: 32, B: 32},
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{R: 252, G: 0, B: 0},
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{R: 252, G: 168, B: 92},
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{R: 252, G: 152, B: 64},
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{R: 252, G: 136, B: 32},
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{R: 252, G: 120, B: 0},
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{R: 228, G: 108, B: 0},
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{R: 204, G: 96, B: 0},
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{R: 180, G: 84, B: 0},
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{R: 156, G: 76, B: 0},
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{R: 252, G: 252, B: 216},
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{R: 252, G: 252, B: 184},
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{R: 252, G: 252, B: 156},
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{R: 252, G: 252, B: 124},
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{R: 252, G: 248, B: 92},
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{R: 252, G: 244, B: 64},
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{R: 252, G: 244, B: 32},
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{R: 252, G: 244, B: 0},
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{R: 228, G: 216, B: 0},
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{R: 204, G: 196, B: 0},
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{R: 180, G: 172, B: 0},
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{R: 156, G: 156, B: 0},
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{R: 132, G: 132, B: 0},
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{R: 112, G: 108, B: 0},
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{R: 88, G: 84, B: 0},
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{R: 64, G: 64, B: 0},
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{R: 208, G: 252, B: 92},
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{R: 196, G: 252, B: 64},
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{R: 180, G: 252, B: 32},
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{R: 160, G: 252, B: 0},
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{R: 144, G: 228, B: 0},
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{R: 128, G: 204, B: 0},
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{R: 116, G: 180, B: 0},
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{R: 96, G: 156, B: 0},
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{R: 216, G: 252, B: 216},
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{R: 188, G: 252, B: 184},
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{R: 156, G: 252, B: 156},
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{R: 128, G: 252, B: 124},
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{R: 96, G: 252, B: 92},
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{R: 64, G: 252, B: 64},
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{R: 32, G: 252, B: 32},
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{R: 0, G: 252, B: 0},
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{R: 0, G: 252, B: 0},
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{R: 0, G: 236, B: 0},
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{R: 0, G: 224, B: 0},
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{R: 0, G: 212, B: 0},
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{R: 4, G: 200, B: 0},
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{R: 4, G: 188, B: 0},
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{R: 4, G: 176, B: 0},
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{R: 4, G: 164, B: 0},
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{R: 4, G: 152, B: 0},
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{R: 4, G: 136, B: 0},
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{R: 4, G: 124, B: 0},
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{R: 4, G: 112, B: 0},
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{R: 4, G: 100, B: 0},
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{R: 4, G: 88, B: 0},
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{R: 4, G: 76, B: 0},
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{R: 4, G: 64, B: 0},
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{R: 216, G: 252, B: 252},
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{R: 184, G: 252, B: 252},
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{R: 156, G: 252, B: 252},
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{R: 124, G: 252, B: 248},
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{R: 92, G: 252, B: 252},
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{R: 64, G: 252, B: 252},
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{R: 32, G: 252, B: 252},
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{R: 0, G: 252, B: 252},
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{R: 0, G: 228, B: 228},
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{R: 0, G: 204, B: 204},
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{R: 0, G: 180, B: 180},
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{R: 0, G: 156, B: 156},
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{R: 0, G: 132, B: 132},
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{R: 0, G: 112, B: 112},
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{R: 0, G: 88, B: 88},
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{R: 0, G: 64, B: 64},
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{R: 92, G: 188, B: 252},
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{R: 64, G: 176, B: 252},
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{R: 32, G: 168, B: 252},
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{R: 0, G: 156, B: 252},
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{R: 0, G: 140, B: 228},
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{R: 0, G: 124, B: 204},
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{R: 0, G: 108, B: 180},
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{R: 0, G: 92, B: 156},
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{R: 216, G: 216, B: 252},
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{R: 184, G: 188, B: 252},
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{R: 156, G: 156, B: 252},
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{R: 124, G: 128, B: 252},
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{R: 92, G: 96, B: 252},
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{R: 64, G: 64, B: 252},
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{R: 32, G: 36, B: 252},
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{R: 0, G: 4, B: 252},
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{R: 0, G: 0, B: 252},
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{R: 0, G: 0, B: 236},
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{R: 0, G: 0, B: 224},
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{R: 0, G: 0, B: 212},
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{R: 0, G: 0, B: 200},
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{R: 0, G: 0, B: 188},
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{R: 0, G: 0, B: 176},
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{R: 0, G: 0, B: 164},
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{R: 0, G: 0, B: 152},
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{R: 0, G: 0, B: 136},
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{R: 0, G: 0, B: 124},
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{R: 0, G: 0, B: 112},
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{R: 0, G: 0, B: 100},
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{R: 0, G: 0, B: 88},
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{R: 0, G: 0, B: 76},
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{R: 0, G: 0, B: 64},
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{R: 40, G: 40, B: 40},
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{R: 252, G: 224, B: 52},
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{R: 252, G: 212, B: 36},
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{R: 252, G: 204, B: 24},
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{R: 252, G: 192, B: 8},
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{R: 252, G: 180, B: 0},
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{R: 180, G: 32, B: 252},
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{R: 168, G: 0, B: 252},
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{R: 152, G: 0, B: 228},
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{R: 128, G: 0, B: 204},
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{R: 116, G: 0, B: 180},
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{R: 96, G: 0, B: 156},
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{R: 80, G: 0, B: 132},
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{R: 68, G: 0, B: 112},
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{R: 52, G: 0, B: 88},
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{R: 40, G: 0, B: 64},
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{R: 252, G: 216, B: 252},
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{R: 252, G: 184, B: 252},
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{R: 252, G: 156, B: 252},
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{R: 252, G: 124, B: 252},
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{R: 252, G: 92, B: 252},
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{R: 252, G: 64, B: 252},
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{R: 252, G: 32, B: 252},
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{R: 252, G: 0, B: 252},
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{R: 224, G: 0, B: 228},
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{R: 200, G: 0, B: 204},
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{R: 180, G: 0, B: 180},
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{R: 156, G: 0, B: 156},
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{R: 132, G: 0, B: 132},
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{R: 108, G: 0, B: 112},
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{R: 88, G: 0, B: 88},
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{R: 64, G: 0, B: 64},
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{R: 252, G: 232, B: 220},
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{R: 252, G: 224, B: 208},
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{R: 252, G: 216, B: 196},
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{R: 252, G: 212, B: 188},
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{R: 252, G: 204, B: 176},
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{R: 252, G: 196, B: 164},
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{R: 252, G: 188, B: 156},
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{R: 252, G: 184, B: 144},
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{R: 252, G: 176, B: 128},
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{R: 252, G: 164, B: 112},
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{R: 252, G: 156, B: 96},
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{R: 240, G: 148, B: 92},
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{R: 232, G: 140, B: 88},
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{R: 220, G: 136, B: 84},
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{R: 208, G: 128, B: 80},
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{R: 200, G: 124, B: 76},
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{R: 188, G: 120, B: 72},
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{R: 180, G: 112, B: 68},
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{R: 168, G: 104, B: 64},
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{R: 160, G: 100, B: 60},
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{R: 156, G: 96, B: 56},
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{R: 144, G: 92, B: 52},
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{R: 136, G: 88, B: 48},
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{R: 128, G: 80, B: 44},
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{R: 116, G: 76, B: 40},
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{R: 108, G: 72, B: 36},
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{R: 92, G: 64, B: 32},
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{R: 84, G: 60, B: 28},
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{R: 72, G: 56, B: 24},
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{R: 64, G: 48, B: 24},
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{R: 56, G: 44, B: 20},
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{R: 40, G: 32, B: 12},
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{R: 96, G: 0, B: 100},
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{R: 0, G: 100, B: 100},
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{R: 0, G: 96, B: 96},
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{R: 0, G: 0, B: 28},
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{R: 0, G: 0, B: 44},
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{R: 48, G: 36, B: 16},
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{R: 72, G: 0, B: 72},
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{R: 80, G: 0, B: 80},
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{R: 0, G: 0, B: 52},
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{R: 28, G: 28, B: 28},
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{R: 76, G: 76, B: 76},
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{R: 92, G: 92, B: 92},
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{R: 64, G: 64, B: 64},
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{R: 48, G: 48, B: 48},
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{R: 52, G: 52, B: 52},
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{R: 216, G: 244, B: 244},
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{R: 184, G: 232, B: 232},
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{R: 156, G: 220, B: 220},
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{R: 116, G: 200, B: 200},
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{R: 72, G: 192, B: 192},
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{R: 32, G: 180, B: 180},
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{R: 32, G: 176, B: 176},
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{R: 0, G: 164, B: 164},
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{R: 0, G: 152, B: 152},
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{R: 0, G: 140, B: 140},
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{R: 0, G: 132, B: 132},
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{R: 0, G: 124, B: 124},
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{R: 0, G: 120, B: 120},
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{R: 0, G: 116, B: 116},
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{R: 0, G: 112, B: 112},
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{R: 0, G: 108, B: 108},
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{R: 152, G: 0, B: 136},
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}
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@ -1,7 +1,6 @@
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package graphics
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import (
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"github.com/pnx/go-raytracer/math"
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"github.com/veandco/go-sdl2/sdl"
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)
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@ -19,12 +18,14 @@ func (c Context) Height() int32 {
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return c.h
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}
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func (c Context) DrawLine(x1 int32, y1 int32, x2 int32, y2 int32, color math.Color) {
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func (c Context) DrawLine(x1 int32, y1 int32, x2 int32, y2 int32, colorIndex byte) {
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color := Palette[colorIndex]
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c.renderer.SetDrawColor(color.R, color.G, color.B, color.A)
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c.renderer.DrawLine(x1, y1, x2, y2)
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}
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func (c Context) DrawRect(x, y, w, h int32, color math.Color) {
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func (c Context) DrawRect(x, y, w, h int32, colorIndex byte) {
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color := Palette[colorIndex]
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c.renderer.SetDrawColor(color.R, color.G, color.B, color.A)
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c.renderer.FillRect(&sdl.Rect{
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X: x,
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