Change how information is sent to the vm to match the usual definitions the VM...

Change how information is sent to the vm to match the usual definitions the VM uses for that information

src/containers/paint-editor-wrapper.jsx

@@ -24,9 +24,21 @@ class PaintEditorWrapper extends React.Component {
     }
     handleUpdateImage (isVector, image, rotationCenterX, rotationCenterY) {
         if (isVector) {
-            this.props.vm.updateSvg(this.props.selectedCostumeIndex, image, rotationCenterX, rotationCenterY);
+            this.props.vm.updateSvg(
+                // Divide by 2 because the VM's definition of the rotation center
+                // is the paint editor's definition of the rotation center
+                // divided by the bitmap resolution
+                this.props.selectedCostumeIndex,
+                image, rotationCenterX / 2,
+                rotationCenterY / 2,
+                2 /* bitmapResolution */);
         } else {
-            this.props.vm.updateBitmap(this.props.selectedCostumeIndex, image, rotationCenterX, rotationCenterY);
+            this.props.vm.updateBitmap(
+                this.props.selectedCostumeIndex,
+                image,
+                rotationCenterX / 2,
+                rotationCenterY / 2,
+                2 /* bitmapResolution */);
         }
     }
     render () {