39 lines
944 B
Go
39 lines
944 B
Go
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// +build ignore
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package main
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import (
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"image/color"
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"github.com/fogleman/gg"
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)
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func main() {
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dc := gg.NewContext(400, 400)
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grad1 := gg.NewConicGradient(200, 200, 0)
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grad1.AddColorStop(0.0, color.Black)
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grad1.AddColorStop(0.5, color.RGBA{255, 215, 0, 255})
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grad1.AddColorStop(1.0, color.RGBA{255, 0, 0, 255})
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grad2 := gg.NewConicGradient(200, 200, 90)
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grad2.AddColorStop(0.00, color.RGBA{255, 0, 0, 255})
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grad2.AddColorStop(0.16, color.RGBA{255, 255, 0, 255})
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grad2.AddColorStop(0.33, color.RGBA{0, 255, 0, 255})
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grad2.AddColorStop(0.50, color.RGBA{0, 255, 255, 255})
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grad2.AddColorStop(0.66, color.RGBA{0, 0, 255, 255})
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grad2.AddColorStop(0.83, color.RGBA{255, 0, 255, 255})
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grad2.AddColorStop(1.00, color.RGBA{255, 0, 0, 255})
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dc.SetStrokeStyle(grad1)
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dc.SetLineWidth(20)
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dc.DrawCircle(200, 200, 180)
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dc.Stroke()
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dc.SetFillStyle(grad2)
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dc.DrawCircle(200, 200, 150)
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dc.Fill()
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dc.SavePNG("gradient-conic.png")
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}
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