modified the magic wand logics for erasing.

js/MagicWand.js

@@ -70,7 +70,7 @@ class MagicWand {
             newMaskData.data[index + 0] = parseInt(this.maskingColor.substr(1,2), 16);
             newMaskData.data[index + 1] = parseInt(this.maskingColor.substr(3,2), 16);
             newMaskData.data[index + 2] = parseInt(this.maskingColor.substr(5,2), 16);
-            newMaskData.data[index + 3] = 255;
+            newMaskData.data[index + 3] = this.adding ? 255 : 0;
         });
 		newMaskCtx.putImageData(newMaskData, 0, 0);
 
@@ -82,7 +82,7 @@ class MagicWand {
         return newMaskCvs;
     }
 
-    constructor(imageCanvas, maskCanvas, sketchCanvas, colorStr, threshold) {
+    constructor(imageCanvas, maskCanvas, sketchCanvas, colorStr, threshold, adding) {
         this.targetCanvas = document.createElement('canvas');
         let trgCvs = this.targetCanvas;
         trgCvs.width = maskCanvas.width;
@@ -98,6 +98,7 @@ class MagicWand {
 
         this.maskingColor = colorStr;
         this.threshold = threshold;
+        this.adding = adding;
     }
 
 }

js/MaskEditorForVframes.js

@@ -619,7 +619,9 @@ class MaskEditorDialog extends ComfyDialog {
 		const y = event.offsetY || event.targetTouches[0].clientY - maskRect.top;
 
 		if (this.is_magicWand) {
-			if (window.TouchEvent && event instanceof TouchEvent || event.buttons == 1) {
+			if ((window.TouchEvent && event instanceof TouchEvent || event.buttons == 1)
+				|| (event.buttons == 2 || event.buttons == 5 || event.buttons == 32)) {
+			
 				var diff = performance.now() - self.lasttime;
 
 				if(diff > 20 && !this.drawing_mode) {
@@ -752,7 +754,8 @@ class MaskEditorDialog extends ComfyDialog {
 					this.maskCanvas, 
 					this.sketchCanvas, 
 					this.getActiveBrushColor(),
-					16);
+					16,
+					event.button == 0);
 				this.magicWandInst.execute(x, y, 0, this.maskCanvas);
 				
 				self.lastx = x;