moveOrigin for zoomabledoodler

2023-10-28 07:38:29 -06:00
parent 0959386ec2
commit a7e7cd139f
3 changed files with 79 additions and 31 deletions
--- a/zoomableCanvas.ts
+++ b/zoomableCanvas.ts
@@ -197,6 +197,13 @@ export class ZoomableDoodler extends Doodler {
    this.origin.y = p.y - (p.y - this.origin.y) * scaleBy;
    this.constrainOrigin();
  }
+  moveOrigin(motion: Point) {
+    if (this.scale > 1) {
+      this.origin.x += motion.x;
+      this.origin.y += motion.y;
+      this.constrainOrigin();
+    }
+  }
  drag(prev: Point) {
    if (this.scale > 1) {
      const xOffset = this.mouse.x - prev.x;