gg/examples/rotated-image.go
2016-12-08 11:16:19 +08:00

28 lines
604 B
Go

package main
import "github.com/fogleman/gg"
func main() {
const W = 400
const H = 200
im, err := gg.LoadPNG("examples/gopher.png")
if err != nil {
panic(err)
}
dc := gg.NewContext(W, H)
// draw outline
dc.SetHexColor("#ff0000")
dc.SetLineWidth(1)
dc.DrawRectangle(0, 0, float64(W), float64(H))
dc.Stroke()
// draw image with current matrix applied
dc.SetHexColor("#0000ff")
dc.SetLineWidth(2)
dc.Rotate(gg.Radians(10))
dc.DrawRectangle(100, 0, float64(im.Bounds().Dx()), float64(im.Bounds().Dy())/2)
dc.StrokePreserve()
dc.Clip()
dc.DrawImage(im, 100, 0)
dc.SavePNG("out.png")
}