automated snapshot

main.go

@@ -23,8 +23,6 @@ func main() {
 
 	os.MkdirAll(snapshotsDir, 0755)
 
-	//rng := rand.New(rand.NewSource(0))
-
 	log := log.New(os.Stdout, "", log.Ldate|log.Ltime|log.Lshortfile)
 
 	storage, err := NewStorage(snapshotsDir)
@@ -53,7 +51,7 @@ func main() {
 
 	field :=
 		ScaleField {
-			Scale: 100.0,
+			Scale: 10.0,
 			Field: &SimplexNoiseField {
 				Noise: opensimplex.NewNormalized32(0),
 			},
@@ -87,7 +85,7 @@ func main() {
 		rl.BeginDrawing()
 		//rl.ClearBackground(rl.Black)
 		rl.BeginMode2D(camera)
-
+		rl.BeginBlendMode(rl.BlendAdditive)
 		t := time.Since(t0).Seconds()
 
 		// set up RenderCtx
@@ -115,6 +113,7 @@ func main() {
 			}
 		}
 
+		rl.EndBlendMode()
 		rl.EndMode2D()
 
 		// HUD
@@ -136,9 +135,7 @@ func (s *FieldSketch) Draw(ctx *RenderCtx) {
 			//screen := rl.Vector2 { X: float32(x) - float32(ctx.Width) / 2.0, Y: float32(y) - float32(ctx.Height) / 2.0 }
 			screen := rl.Vector2 { X: float32(x), Y: float32(y) }
 			world := rl.GetScreenToWorld2D(screen, ctx.Cam)
-			//fmt.Printf("screen -> %v, world -> %v\n", screen, world)
 			v := s.Field.Get(world.X, world.Y)
-			//fmt.Printf("%.3f\n", v)
 			clr := GrayCurve(v, 1.0)
 			rl.DrawPixelV(world, clr)
 		}
@@ -152,12 +149,14 @@ type ContourSketch struct {
 
 func NewContourSketch(rng *rand.Rand, field Field) ContourSketch {
 
-	actors := make([]*Actor, 10000)
+	actors := make([]*Actor, 1000)
 	for i := range len(actors) {
 		actors[i] = 
 			&Actor {
 				position: RandRadialVec(rng, 0, 500, 0, 360),
 				field: field,
+				stepSize: 0.5,
+				color: rl.NewColor(11, 35, 176, 200),
 			}
 	}
 
@@ -176,14 +175,15 @@ func (s *ContourSketch) Draw(ctx *RenderCtx) {
 type Actor struct {
 	position rl.Vector2
 	field Field
+	stepSize float32
+	color rl.Color
 }
 
 func (a *Actor) Draw() {
 	v := a.field.Get(a.position.X, a.position.Y)
-	rad := rl.Remap(v, 0, 1, 0, 2 * math.Pi)
-	stepSize := float32(2.0)
-	nextPosition := rl.Vector2 { X: a.position.X + stepSize*float32(math.Cos(float64(rad))), Y: a.position.Y + stepSize*float32(math.Sin(float64(rad))) }
-	rl.DrawLineV(a.position, nextPosition, rl.NewColor(255, 255, 255, 25))
+	rad := rl.Remap(v, 0, 1, 0, 3 * math.Pi)
+	nextPosition := rl.Vector2 { X: a.position.X + a.stepSize*float32(math.Cos(float64(rad))), Y: a.position.Y + a.stepSize*float32(math.Sin(float64(rad))) }
+	rl.DrawLineV(a.position, nextPosition, a.color)
 	//fmt.Printf("position %v -> nextPosition %v \n", a.position, nextPosition)
 	a.position = nextPosition
 }