Question

1当我尝试将图像添加到多边形对象时，我正在创建一个具有明确点的多边形。图像不在多边形中渲染。它是从画布的起点渲染的。下面是我使用的代码。请告诉我我在哪里做错了。感谢任何帮助！谢谢

Jsfiddle Link https://jsfiddle.net/u3bfscom/6/ 添加点并稍后创建多边形添加纹理。

        fabric.Image.fromURL('https://image.freepik.com/free-photo/roof-texture_21206171.jpg', function (oImg)  {
        for(var i=0;canvas.getObjects().length>i;i++)
        {
            if(canvas.getObjects()[i].name=="Polygon")
            {   
                    canvas.getObjects()[i].set(oImg);
            }
        }
        canvas.renderAll();
        });

Answer 1

得到答案。

fabric.Image.fromURL('https://image.freepik.com/free-photo/roof-texture_21206171.jpg', function (img)  {
            var patternSourceCanvas = new fabric.StaticCanvas();
            patternSourceCanvas.add(img);
            var pattern = new fabric.Pattern({
              source: function() {
                patternSourceCanvas.setDimensions({
                  width: img.getWidth(),
                  height: img.getHeight()
                });
                return patternSourceCanvas.getElement();
              },
            });
            console.log(img);
           for(var i=0;canvas.getObjects().length>i;i++)
            {
                if(canvas.getObjects()[i].name=="Polygon")
                {   
                        canvas.getObjects()[i].set("fill", pattern);
                        canvas.renderAll();
                }
            }
        });

如何在fabric js中将图像添加到多边形？

1 个答案: