自己编的vb编程，逐点比较法插补从而画出圆弧,很不错的-The vb own programming, point by point comparison method in order to draw circular interpolation, it is good

网上下的一个画圆弧的简单程序，很好用的简单程序-Online drawing an arc simple procedures, good simple program

图片裁剪网说明： [1] 鼠标拖动裁剪框可移动裁剪区域的位置,此操作适用于矩形裁剪，圆形裁剪，圆角矩形裁剪，圆弧裁剪。 [2] 鼠标拉拽裁剪框边框可调整裁剪区域的大小,此操作适用于矩形裁剪，圆形裁剪，圆角矩形裁剪，圆弧裁剪。-[1] The mouse drag the crop frame to move the position of the cropping area. This operation is suitable for rectangle cutting, circular c