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package main
import (
"image/color"
"github.com/fogleman/gg"
)
func main() {
dc := gg.NewContext(500, 400)
grad := gg.NewLinearGradient(20, 320, 400, 20)
grad.AddColorStop(0, color.RGBA{0, 255, 0, 255})
grad.AddColorStop(1, color.RGBA{0, 0, 255, 255})
grad.AddColorStop(0.5, color.RGBA{255, 0, 0, 255})
dc.SetColor(color.White)
dc.DrawRectangle(20, 20, 400-20, 300)
dc.Stroke()
dc.SetStrokeStyle(grad)
dc.SetLineWidth(4)
dc.MoveTo(10, 10)
dc.LineTo(410, 10)
dc.LineTo(410, 100)
dc.LineTo(10, 100)
dc.ClosePath()
dc.Stroke()
dc.SetFillStyle(grad)
dc.MoveTo(10, 120)
dc.LineTo(410, 120)
dc.LineTo(410, 300)
dc.LineTo(10, 300)
dc.ClosePath()
dc.Fill()
dc.SavePNG("out.png")
}
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