restore line's fillWithPattern, fix symbol.linePatternFile on LineString

Author: fuzhenn

packages/maptalks/src/core/Canvas.ts

@@ -116,7 +116,7 @@ const defaultChars = getDefaultCharacterSet();
 /**
  * 文本是否全部是默认字符
  * @param chars
- * @returns 
+ * @returns
  */
 function textIsDefaultChars(chars: string[]) {
     for (let i = 0, len = chars.length; i < len; i++) {
@@ -141,12 +141,12 @@ function reverseChars(chars: string[]) {
 
 /**
  * 字符的旋转角度
- * @param p1 
- * @param p2 
- * @param char 
- * @param direction 
- * @param isDefaultChars 
- * @returns 
+ * @param p1
+ * @param p2
+ * @param char
+ * @param direction
+ * @param isDefaultChars
+ * @returns
  */
 function getCharRotation(p1: Point, p2: Point, char: string, direction: string, isDefaultChars: boolean) {
     const x0 = p1.x, y0 = p1.y;
@@ -176,9 +176,9 @@ function getCharRotation(p1: Point, p2: Point, char: string, direction: string,
 
 /**
  * 测量字符的大小
- * @param char 
- * @param fontSize 
- * @returns 
+ * @param char
+ * @param fontSize
+ * @returns
  */
 function measureCharSize(char: string, fontSize: number) {
     let w = fontSize, h = fontSize;
@@ -192,9 +192,9 @@ function measureCharSize(char: string, fontSize: number) {
 
 /**
  * 计算文本的长度
- * @param textName 
- * @param fontSize 
- * @returns 
+ * @param textName
+ * @param fontSize
+ * @returns
  */
 function measureTextLength(textName: string, fontSize: number) {
     let textLen = 0;
@@ -220,9 +220,9 @@ function getPercentPoint(segment: segmentType, dis: number) {
 /**
  * path 分割
  * https://github.com/deyihu/lineseg
- * @param points 
- * @param options 
- * @returns 
+ * @param points
+ * @param options
+ * @returns
  */
 function lineSeg(points: Array<Point>, options: any) {
     options = Object.assign({ segDistance: 1, isGeo: true }, options);
@@ -298,8 +298,8 @@ function lineSeg(points: Array<Point>, options: any) {
 
 /**
  * 文本路径方向
- * @param path 
- * @returns 
+ * @param path
+ * @returns
  */
 function textPathDirection(path: Array<charItemType>) {
     const len = path.length;
@@ -330,10 +330,10 @@ function textPathDirection(path: Array<charItemType>) {
 
 /**
  * 获取文本沿线路径的点
- * @param chunk 
- * @param chars 
- * @param fontSize 
- * @returns 
+ * @param chunk
+ * @param chars
+ * @param fontSize
+ * @returns
  */
 function getTextPath(chunk: Array<Point>, chars: string[], fontSize: number, globalCollisonIndex: CollisionIndex) {
     const total = pathDistance(chunk);
@@ -1122,12 +1122,12 @@ const Canvas = {
     /**
      * mock gradient path
      * 利用颜色插值来模拟渐变的Path
-     * @param ctx 
-     * @param points 
-     * @param lineDashArray 
-     * @param lineOpacity 
-     * @param isRing 
-     * @returns 
+     * @param ctx
+     * @param points
+     * @param lineDashArray
+     * @param lineOpacity
+     * @param isRing
+     * @returns
      */
     _gradientPath(ctx: CanvasRenderingContext2D, points, lineDashArray, lineOpacity, isRing = false) {
         if (!isNumber(lineOpacity)) {
@@ -1235,13 +1235,13 @@ const Canvas = {
         function fillWithPattern(p1, p2) {
             const degree = computeDegree(p1.x, p1.y, p2.x, p2.y);
             ctx.save();
-            // const cosd = Math.cos(degree);
-            // if (Math.abs(cosd) < 1E-7) {
-            //     //a vertical line
-            //     ctx.translate(p1.x - ctx.lineWidth / 2, p1.y);
-            // } else {
-            //     ctx.translate(p1.x, p1.y - ctx.lineWidth / 2 / cosd);
-            // }
+            const cosd = Math.cos(degree);
+            if (Math.abs(cosd) < 1E-7) {
+                //a vertical line
+                ctx.translate(p1.x - ctx.lineWidth / 2, p1.y);
+            } else {
+                ctx.translate(p1.x, p1.y - ctx.lineWidth / 2 / cosd);
+            }
             ctx.rotate(degree);
             Canvas._stroke(ctx, lineOpacity);
             ctx.restore();