automated snapshot

main.go

@@ -13,50 +13,17 @@ import (
 )
 
 const (
-	screenWidth  = 800
-	screenHeight = 600
-	sourceWidth  = 10000
-	sourceHeight = 10000
-	displayScale = 2
+	targetWidth  = 800
+	targetHeight = 600
+	sourceScale  = 1
 	snapshotsDir = "snapshots"
 )
 
-func main3() {
-	rl.InitWindow(800, 600, "rt test")
-	defer rl.CloseWindow()
-
-	rt := rl.LoadRenderTexture(512, 512)
-	defer rl.UnloadRenderTexture(rt)
-
-	for !rl.WindowShouldClose() {
-		// draw into offscreen buffer
-		rl.BeginTextureMode(rt)
-		rl.ClearBackground(rl.Blank)
-		rl.DrawCircle(256, 256, 100, rl.Red)
-		rl.EndTextureMode()
-
-		// draw to screen
-		rl.BeginDrawing()
-		rl.ClearBackground(rl.RayWhite)
-
-		src := rl.Rectangle{
-			X: 0, Y: 0,
-			Width:  float32(rt.Texture.Width),
-			Height: -float32(rt.Texture.Height),
-		}
-		dst := rl.Rectangle{
-			X: 0, Y: 0,
-			Width:  800,
-			Height: 600,
-		}
-
-		rl.DrawTexturePro(rt.Texture, src, dst, rl.Vector2{}, 0, rl.White)
-		rl.EndDrawing()
-	}
-}
-
 func main() {
 
+	sourceWidth  := sourceScale * targetWidth
+	sourceHeight := sourceScale * targetHeight
+
 	os.MkdirAll(snapshotsDir, 0755)
 	log := log.New(os.Stdout, "", log.Ldate|log.Ltime|log.Lshortfile)
 	storage, err := NewStorage(snapshotsDir)
@@ -64,22 +31,22 @@ func main() {
 		log.Printf("Error loading storage: %v\n", err)
 		os.Exit(1)
 	}
-	rl.SetConfigFlags(rl.FlagWindowHighdpi)
-	rl.InitWindow(screenWidth, screenHeight, "sumi sierpinski arrow")
+
+	rl.SetConfigFlags(rl.FlagWindowHighdpi & rl.FlagMsaa4xHint)
+	rl.InitWindow(targetWidth, targetHeight, "sumi sierpinski arrow")
 
 	log.Printf("screen=%dx%d render=%dx%d",
 		rl.GetScreenWidth(), rl.GetScreenHeight(),
 		rl.GetRenderWidth(), rl.GetRenderHeight(),
 	)
 
-	w := rl.GetRenderWidth()
-	h := rl.GetRenderHeight()
-
-	var camera = rl.Camera2D{
-		Target:   rl.Vector2{X: 0, Y: 0},
-		Offset:   rl.Vector2{X: float32(w) / 2, Y: float32(h) / 2},
-		Rotation: 0,
+	// point at source center
+	// put source center at center of screen
+	var camera = rl.Camera2D {
+		Target:   rl.Vector2{X: float32(targetWidth) / 2, Y: float32(targetHeight) / 2},
+		Offset:   rl.Vector2{},
 		Zoom:     1.0,
+		Rotation: 0,
 	}
 
 	/*
@@ -90,9 +57,7 @@ func main() {
 						Noise: opensimplex.NewNormalized32(0),
 					},
 				}
-
 		imgf := NewImageField("/home/d/Dropbox/art/passage/data/david.png")
-
 		imageField :=
 			ScaleField{
 				field: &imgf,
@@ -105,7 +70,7 @@ func main() {
 	//contourSketch := NewContourLayer(rng, &imageField)
 
 	sketch := NewSketch()
-	sketch.CreateLayer("testPattern", &TestPattern{}, sourceWidth, sourceHeight)
+	sketch.CreateLayer("testPattern", &TestPattern{}, int32(sourceWidth), int32(sourceHeight))
 
 	rl.SetTargetFPS(60)
 
@@ -127,8 +92,8 @@ func main() {
 
 		// set up RenderCtx
 		renderCtx := &RenderCtx{
-			TargetWidth:  int32(w),
-			TargetHeight: int32(h),
+			TargetWidth:  int32(targetWidth),
+			TargetHeight: int32(targetHeight),
 			SourceWidth:  int32(sourceWidth),
 			SourceHeight: int32(sourceHeight),
 			Time:         t,
@@ -142,14 +107,11 @@ func main() {
 		rl.BeginDrawing()
 		rl.ClearBackground(rl.Blank)
 
-		//rl.PushMatrix()
 		sketch.Draw(renderCtx)
 
 		rl.DrawText("Mouse right button drag to move, mouse wheel to zoom", 10, 10, 20, rl.White)
-		//rl.PopMatrix()
 
 		rl.EndDrawing()
-		//rl.DrawCircle(0, 0, 10, rl.Green)
 
 		if rl.IsKeyDown(rl.KeySpace) {
 			if _, err := storage.Save(); err != nil {
@@ -243,6 +205,7 @@ func updateCamera(camera *rl.Camera2D) {
 		delta := rl.GetMouseDelta()
 		// compute the amount to move scaled by the camera zoom
 		delta = rl.Vector2Scale(delta, -1.0/camera.Zoom)
+		delta.Y = -delta.Y
 		camera.Target = rl.Vector2Add(camera.Target, delta)
 	}
 	// Zoom based on mouse wheel