部件选取

src/component/Canvas/test.vue

@@ -53,7 +53,7 @@
 		};
 	});
 	// 边界追踪
-	function traceImageContour(canvas) {
+	function traceImageContour(canvas, scale = 1) {
 		const ctx = canvas.getContext("2d");
 		const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
 		const data = imageData.data;