修改线当速度为0时不反向bug

src/Tools/index.js

@@ -709,7 +709,8 @@ class Tools {
           color: color,
           image: this.getSourceRootPath() + `/img/arrow/${type - 6}.png`,
           space: newParam.space,
-          speed: newParam.speed
+          speed: newParam.speed,
+          rotate: newParam.rotate
         }
 
         param.speed = newParam.rotate ? param.speed : 0 - param.speed
@@ -733,11 +734,11 @@ class Tools {
     myImg.src = options.image
     myImg.onload = function () {
       options.space = Math.max(0.1, options.space);
-      if (options.speed > 0 || options.speed == 0) {
+      if (options.speed > 0 || (options.speed == 0 && options.rotate)) {
         canvasEle.width = myImg.width * (options.space + 1)
         canvasEle.height = myImg.height
         ctx.drawImage(myImg, myImg.width * (options.space / 2), 0)
-      } else {
+      } else if (options.speed < 0 || (options.speed == 0 && !options.rotate)) {
         ctx.clearRect(0, 0, canvasEle.width, canvasEle.height);
         canvasEle.width = myImg.width * (options.space + 1)
         canvasEle.height = myImg.height