文本属性和方法 font 设置或返回文本内容的当前字体属性 textAlign 设置或返回文本内容的当前对齐方式 start 默认.文本在指定的位置开始. end 文本在指定的位置结束. center 文本的中心被放置在指定的位置. left 文本左对齐. right 文本右对齐. textBaseline 设置或返回在绘制文本
Ovals, mathematically, are ellipses, including circles as a special case. The ellipse is fit into a rectangle defined by the coordinates (x0, y0) of the top left corner and the coordinates (x1, y1) of the bottom right corner: The oval will coincide w