通用属性
线条样式(line styles)
透明度(<span style="font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace; font-weight: inherit; word-spacing: normal; background-color: rgb(250, 251, 252); color: rgb(59, 60, 64); font-size: 14px;">globalAlpha</span>)<br>
阴影(shadows)
移动(translate)
旋转(rotate)
组合/合成方式(globalCompositeOperation)
<span style="color: rgb(59, 60, 64); font-family: "Open Sans", Arial, sans-serif; font-size: 14px;">Path2D</span>
根据路径
填充(fill)
轮廓(stroke)
<span style="font-size: 17px;">裁切(clip)</span>
