automated snapshot

sierpinski.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	rl "github.com/gen2brain/raylib-go/raylib"
 )
 
@@ -9,6 +10,8 @@ type SierpinskiArrow struct{
 }
 
 func (s *SierpinskiArrow) Draw(ctx *RenderCtx) {
+	rl.Translatef(float32(ctx.SourceWidth) / 2.0, float32(ctx.SourceHeight) / 2.0, 0)
+	rl.ClearBackground(rl.NewColor(0, 0, 0, 0))
 	sierpinskiArrow(ctx, int(ctx.Ports["sierpinskiArrowDepth"]), ctx.Ports["sierpinskiArrowLength"])
 }
 
@@ -21,6 +24,7 @@ func (s *SierpinskiArrow) IsDirty() bool {
 }
 
 func sierpinskiArrow(ctx *RenderCtx, order int, length float64) {
+	fmt.Printf("drawing SierpinskiArrow, order = %d, length = %.2f\n", order, length)
 	if order == 0 {
 		curve(ctx, order, length, ctx.Ports["sierpinskiArrowAngle"])
 	} else {