!15184 修改canvas文档clip方法示例图片-3.1release

Merge pull request !15184 from lanyi/local_clip_picture

zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md

@@ -1663,10 +1663,15 @@ struct Clip {
         .backgroundColor('#ffff00')
         .onReady(() =>{
           let region = new Path2D()
-          region.rect(80,10,20,130)
-          region.rect(40,50,100,50)
+          region.moveTo(30, 90)
+          region.lineTo(110, 20)
+          region.lineTo(240, 130)
+          region.lineTo(60, 130)
+          region.lineTo(190, 20)
+          region.lineTo(270, 90)
+          region.closePath()
           this.context.clip(region,"evenodd")
-          this.context.fillStyle = "rgb(255,0,0)"
+          this.context.fillStyle = "rgb(0,255,0)"
           this.context.fillRect(0, 0, this.context.width, this.context.height)
         })
     }

zh-cn/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md

@@ -1766,11 +1766,16 @@ struct Clip {
         .height('100%')
         .backgroundColor('#ffff00')
         .onReady(() =>{
-          let region = new Path2D();
-          region.rect(80,10,20,130);
-          region.rect(40,50,100,50);
+          let region = new Path2D()
+          region.moveTo(30, 90)
+          region.lineTo(110, 20)
+          region.lineTo(240, 130)
+          region.lineTo(60, 130)
+          region.lineTo(190, 20)
+          region.lineTo(270, 90)
+          region.closePath()
           this.offContext.clip(region,"evenodd")
-          this.offContext.fillStyle = "rgb(255,0,0)"
+          this.offContext.fillStyle = "rgb(0,255,0)"
           this.offContext.fillRect(0, 0, 600, 600)
           var image = this.offContext.transferToImageBitmap()
           this.context.transferFromImageBitmap(image)