50 lines
1.5 KiB
Go
50 lines
1.5 KiB
Go
package arts
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import (
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"github.com/fogleman/gg"
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"github.com/jdxyw/generativeart"
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"github.com/jdxyw/generativeart/common"
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"math"
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"math/rand"
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)
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type dotsWave struct {
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dotsN int
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}
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// NewDotsWave returns a dotsWave object.
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func NewDotsWave(dotsN int) *dotsWave {
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return &dotsWave{
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dotsN: dotsN,
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}
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}
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// Generative draws a dots wave images.
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func (d *dotsWave) Generative(c *generativeart.Canva) {
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ctex := gg.NewContextForRGBA(c.Img())
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noise := common.NewPerlinNoise()
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for i := 0; i < d.dotsN; i++ {
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x := common.RandomRangeFloat64(-0.1, 1.1) * float64(c.Width())
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y := common.RandomRangeFloat64(-0.1, 1.1) * float64(c.Height())
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num := common.RandomRangeFloat64(100, 1000)
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r := rand.Float64() * float64(c.Width()) * 0.15 * rand.Float64()
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ind := common.RandomRangeFloat64(1, 8)
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ctex.Push()
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ctex.Translate(x, y)
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ctex.Rotate(float64(rand.Intn(8)) * math.Pi / 4)
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rand.Shuffle(len(c.Opts().ColorSchema()), func(i, j int) {
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c.Opts().ColorSchema()[i], c.Opts().ColorSchema()[j] = c.Opts().ColorSchema()[j], c.Opts().ColorSchema()[i]
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})
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for j := 0.0; j < num; j += ind {
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s := float64(c.Width()) * 0.15 * common.RandomRangeFloat64(0, common.RandomRangeFloat64(0, common.RandomRangeFloat64(0, common.RandomRangeFloat64(0, common.RandomRangeFloat64(0, common.RandomRangeFloat64(0, rand.Float64()))))))
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ci := int(float64(len(c.Opts().ColorSchema())) * noise.Noise3D(j*0.01, x, y))
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ctex.SetColor(c.Opts().ColorSchema()[ci])
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ctex.DrawCircle(j, r*math.Sin(j*0.05), s*2/3)
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ctex.Fill()
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}
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ctex.Pop()
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}
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}
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