28 lines
604 B
Go
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")
|
||
|
|
}
|