Created
May 30, 2022 12:29
-
-
Save venning/3ac65978f793534dbc4a102b2274f494 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package main | |
| import ( | |
| "image" | |
| "image/color" | |
| "log" | |
| "github.com/hajimehoshi/ebiten/v2" | |
| "github.com/hajimehoshi/ebiten/v2/vector" | |
| ) | |
| var ( | |
| emptyImage = ebiten.NewImage(3, 3) | |
| // emptySubImage is an internal sub image of emptyImage. | |
| // Use emptySubImage at DrawTriangles instead of emptyImage in order to avoid bleeding edges. | |
| emptySubImage = emptyImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image) | |
| ) | |
| func init() { | |
| emptyImage.Fill(color.White) | |
| } | |
| const ( | |
| screenWidth = 640 | |
| screenHeight = 480 | |
| size = 100 | |
| ) | |
| type Game struct { | |
| } | |
| func (g *Game) Update() error { | |
| return nil | |
| } | |
| func (g *Game) Draw(screen *ebiten.Image) { | |
| containerImage := ebiten.NewImage(size, size) | |
| containerImage.Fill(color.White) | |
| var path vector.Path | |
| path.MoveTo(0, 0) | |
| path.LineTo(0, size - 1) | |
| path.LineTo(size - 1, size - 1) | |
| path.LineTo(size - 1, 0) | |
| triOp := &ebiten.DrawTrianglesOptions{ | |
| FillRule: ebiten.EvenOdd, | |
| } | |
| vs, is := path.AppendVerticesAndIndicesForFilling(nil, nil) | |
| for i := range vs { | |
| vs[i].SrcX = 1 | |
| vs[i].SrcY = 1 | |
| vs[i].ColorR = 0xdb / float32(0xff) | |
| vs[i].ColorG = 0x56 / float32(0xff) | |
| vs[i].ColorB = 0x20 / float32(0xff) | |
| } | |
| containerImage.DrawTriangles(vs, is, emptySubImage, triOp) | |
| op := &ebiten.DrawImageOptions{} | |
| op.GeoM.Translate(50, 50) | |
| screen.DrawImage(containerImage, op) | |
| } | |
| func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) { | |
| return screenWidth, screenHeight | |
| } | |
| func main() { | |
| ebiten.SetWindowSize(screenWidth, screenHeight) | |
| ebiten.SetWindowTitle("Path Test") | |
| if err := ebiten.RunGame(&Game{}); err != nil { | |
| log.Fatal(err) | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment