Last active
April 2, 2019 21:08
-
-
Save peterhellberg/80df53fa909a2012f5acc00e2b908fc0 to your computer and use it in GitHub Desktop.
Tunnel effects in Go
This file contains hidden or 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" | |
| "math" | |
| "time" | |
| "github.com/faiface/pixel" | |
| "github.com/faiface/pixel/pixelgl" | |
| "github.com/peterhellberg/plasma" | |
| "github.com/peterhellberg/plasma/palette" | |
| ) | |
| const ( | |
| size = 256 | |
| fsize = float64(size) | |
| w = 640 | |
| fw = float64(w) | |
| h = 480 | |
| fh = float64(h) | |
| ) | |
| func run() { | |
| win, err := pixelgl.NewWindow(pixelgl.WindowConfig{ | |
| Bounds: pixel.R(0, 0, float64(w), float64(h)), | |
| VSync: true, | |
| Undecorated: true, | |
| Resizable: false, | |
| }) | |
| if err != nil { | |
| panic(err) | |
| } | |
| win.SetSmooth(true) | |
| texture := plasmaImage(size, size) | |
| buffer := image.NewRGBA(image.Rect(0, 0, w, h)) | |
| bufferPicture := pixel.PictureDataFromImage(buffer) | |
| distanceTable := [h][w]int{} | |
| angleTable := [h][w]int{} | |
| ratio := 32.0 | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| fx, fy := float64(x), float64(y) | |
| distance := int(ratio*size/math.Sqrt((fx-fw/2.0)*(fx-fw/2.0)+(fy-fh/2.0)*(fy-fh/2.0))) % size | |
| angle := int(0.5 * size * math.Atan2(fy-fh/2.0, fx-fw/2.0) / math.Pi) | |
| distanceTable[y][x] = distance | |
| angleTable[y][x] = angle | |
| } | |
| } | |
| centerMatrix := pixel.IM.Moved(win.Bounds().Center()).Scaled( | |
| win.Bounds().Center(), 1, | |
| ) | |
| start := time.Now() | |
| go func() { | |
| for range time.Tick(32 * time.Millisecond) { | |
| animation := time.Since(start).Seconds() | |
| shiftX := int(fsize * 1.2 * animation) | |
| shiftY := int(fsize * 0.10 * animation) | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| buffer.Set(x, y, texture.At( | |
| int(uint(distanceTable[y][x]+shiftX)%size), | |
| int(uint(angleTable[y][x]+shiftY)%size), | |
| )) | |
| } | |
| } | |
| bufferPicture = pixel.PictureDataFromImage(buffer) | |
| } | |
| }() | |
| for !win.Closed() { | |
| win.SetClosed(win.JustPressed(pixelgl.KeyEscape) || win.JustPressed(pixelgl.KeyQ)) | |
| bs := pixel.NewSprite(bufferPicture, bufferPicture.Bounds()) | |
| bs.SetMatrix(centerMatrix) | |
| bs.Draw(win) | |
| win.Update() | |
| } | |
| } | |
| func plasmaImage(w, h int) image.Image { | |
| return plasma.New(w, h, 64).Image(w, h, 12, palette.DefaultGradient) | |
| } | |
| func main() { | |
| pixelgl.Run(run) | |
| } |
This file contains hidden or 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" | |
| "math" | |
| "time" | |
| "github.com/faiface/pixel" | |
| "github.com/faiface/pixel/pixelgl" | |
| "github.com/peterhellberg/plasma" | |
| "github.com/peterhellberg/plasma/palette" | |
| ) | |
| const ( | |
| size = 256 | |
| fsize = float64(size) | |
| w = 640 | |
| fw = float64(w) | |
| h = 480 | |
| fh = float64(h) | |
| ) | |
| func run() { | |
| win, err := pixelgl.NewWindow(pixelgl.WindowConfig{ | |
| Bounds: pixel.R(0, 0, float64(w), float64(h)), | |
| VSync: true, | |
| Undecorated: true, | |
| Resizable: false, | |
| }) | |
| if err != nil { | |
| panic(err) | |
| } | |
| win.SetSmooth(true) | |
| texture1 := xorImage(size, size) | |
| texture2 := plasmaImage(size, size) | |
| buffer := image.NewRGBA(image.Rect(0, 0, w, h)) | |
| bufferPicture := pixel.PictureDataFromImage(buffer) | |
| distanceTable := [h][w]int{} | |
| angleTable := [h][w]int{} | |
| ratio := 32.0 | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| fx, fy := float64(x), float64(y) | |
| distance := int(ratio*size/math.Sqrt((fx-fw/2.0)*(fx-fw/2.0)+(fy-fh/2.0)*(fy-fh/2.0))) % size | |
| angle := int(0.5 * size * math.Atan2(fy-fh/2.0, fx-fw/2.0) / math.Pi) | |
| distanceTable[y][x] = distance | |
| angleTable[y][x] = angle | |
| } | |
| } | |
| centerMatrix := pixel.IM.Moved(win.Bounds().Center()).Scaled( | |
| win.Bounds().Center(), 1, | |
| ) | |
| start := time.Now() | |
| go func() { | |
| for range time.Tick(32 * time.Millisecond) { | |
| animation := time.Since(start).Seconds() | |
| shiftX := int(fsize * 1.2 * animation) | |
| shiftY := int(fsize * 0.10 * animation) | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| texture := texture1 | |
| if int(animation)%2 == 0 { | |
| texture = texture2 | |
| } | |
| buffer.Set(x, y, texture.At( | |
| int(uint(distanceTable[y][x]+shiftX)%size), | |
| int(uint(angleTable[y][x]+shiftY)%size), | |
| )) | |
| } | |
| } | |
| bufferPicture = pixel.PictureDataFromImage(buffer) | |
| } | |
| }() | |
| for !win.Closed() { | |
| win.SetClosed(win.JustPressed(pixelgl.KeyEscape) || win.JustPressed(pixelgl.KeyQ)) | |
| bs := pixel.NewSprite(bufferPicture, bufferPicture.Bounds()) | |
| bs.SetMatrix(centerMatrix) | |
| bs.Draw(win) | |
| win.Update() | |
| } | |
| } | |
| func plasmaImage(w, h int) image.Image { | |
| return plasma.New(w, h, 64).Image(w, h, 12, palette.DefaultGradient) | |
| } | |
| func xorImage(w, h int) image.Image { | |
| m := image.NewRGBA(image.Rect(0, 0, w, h)) | |
| for x := 0; x < w; x++ { | |
| for y := 0; y < h; y++ { | |
| u := uint8(x ^ y) | |
| c := color.RGBA{ | |
| (u) % 192, | |
| 24, | |
| (u & uint8(y)) % 128, | |
| 200, | |
| } | |
| m.Set(x, y, c) | |
| } | |
| } | |
| return m | |
| } | |
| func main() { | |
| pixelgl.Run(run) | |
| } |
This file contains hidden or 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" | |
| "math" | |
| "time" | |
| "github.com/faiface/pixel" | |
| "github.com/faiface/pixel/pixelgl" | |
| ) | |
| const ( | |
| size = 256 | |
| fsize = float64(size) | |
| w = 640 | |
| fw = float64(w) | |
| h = 480 | |
| fh = float64(h) | |
| ) | |
| func run() { | |
| win, err := pixelgl.NewWindow(pixelgl.WindowConfig{ | |
| Bounds: pixel.R(0, 0, float64(w), float64(h)), | |
| VSync: true, | |
| Undecorated: true, | |
| Resizable: false, | |
| }) | |
| if err != nil { | |
| panic(err) | |
| } | |
| win.SetSmooth(true) | |
| texture := xorImage(size, size) | |
| buffer := image.NewRGBA(image.Rect(0, 0, w, h)) | |
| bufferPicture := pixel.PictureDataFromImage(buffer) | |
| distanceTable := [h][w]int{} | |
| angleTable := [h][w]int{} | |
| ratio := 32.0 | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| fx, fy := float64(x), float64(y) | |
| distance := int(ratio*size/math.Sqrt((fx-fw/2.0)*(fx-fw/2.0)+(fy-fh/2.0)*(fy-fh/2.0))) % size | |
| angle := int(0.5 * size * math.Atan2(fy-fh/2.0, fx-fw/2.0) / math.Pi) | |
| distanceTable[y][x] = distance | |
| angleTable[y][x] = angle | |
| } | |
| } | |
| centerMatrix := pixel.IM.Moved(win.Bounds().Center()).Scaled( | |
| win.Bounds().Center(), 1, | |
| ) | |
| start := time.Now() | |
| go func() { | |
| for range time.Tick(32 * time.Millisecond) { | |
| animation := time.Since(start).Seconds() | |
| shiftX := int(fsize * 1.2 * animation) | |
| shiftY := int(fsize * 0.10 * animation) | |
| for y := 0; y < h; y++ { | |
| for x := 0; x < w; x++ { | |
| buffer.Set(x, y, texture.At( | |
| int(uint(distanceTable[y][x]+shiftX)%size), | |
| int(uint(angleTable[y][x]+shiftY)%size), | |
| )) | |
| } | |
| } | |
| bufferPicture = pixel.PictureDataFromImage(buffer) | |
| } | |
| }() | |
| for !win.Closed() { | |
| win.SetClosed(win.JustPressed(pixelgl.KeyEscape) || win.JustPressed(pixelgl.KeyQ)) | |
| bs := pixel.NewSprite(bufferPicture, bufferPicture.Bounds()) | |
| bs.SetMatrix(centerMatrix) | |
| bs.Draw(win) | |
| win.Update() | |
| } | |
| } | |
| func xorImage(w, h int) image.Image { | |
| m := image.NewRGBA(image.Rect(0, 0, w, h)) | |
| for x := 0; x < w; x++ { | |
| for y := 0; y < h; y++ { | |
| u := uint8(x ^ y) | |
| c := color.RGBA{ | |
| (u) % 192, | |
| 24, | |
| (u & uint8(y)) % 128, | |
| 200, | |
| } | |
| m.Set(x, y, c) | |
| } | |
| } | |
| return m | |
| } | |
| func main() { | |
| pixelgl.Run(run) | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Smaller animation: