63 lines
1.2 KiB
Go
63 lines
1.2 KiB
Go
package graphics
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import (
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"math/rand"
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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var (
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FlourescentHues = []float32{
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0, // hot magenta-red
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30, // neon orange
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60, // acid yellow
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120, // laser green
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180, // cyan
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210, // electric blue
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270, // ultraviolet purple
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}
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FlourescentColors = makeFlourescentColors()
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)
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func makeFlourescentColors() []rl.Color {
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fc := make([]rl.Color, len(FlourescentHues))
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for i, hue := range(FlourescentHues) {
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fc[i] = rl.ColorFromHSV(hue, 1.0, 1.0)
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}
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return fc
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}
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type ColorCycle interface {
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Next() rl.Color
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}
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type ArrayBackedColorCycle struct {
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colors []rl.Color
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index int
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}
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func NewFixedColorCycle(colors []rl.Color) ArrayBackedColorCycle {
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return ArrayBackedColorCycle {
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colors: colors,
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index: 0,
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}
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}
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func (c ArrayBackedColorCycle) Shuffle(seed int64) ColorCycle {
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r := rand.New(rand.NewSource(seed))
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cprime := &ArrayBackedColorCycle {
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colors: make([]rl.Color, len(c.colors)),
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index: 0,
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}
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r.Shuffle(len(c.colors), func(i, j int) {
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cprime.colors[i] = c.colors[j]
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})
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return cprime
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}
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func (c *ArrayBackedColorCycle) Next() rl.Color {
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color := c.colors[c.index]
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c.index = (c.index + 1) % len(c.colors)
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return color
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}
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