图片放大源代码，你可以利用此代码对光栅图和矢量图进行任意的放大和缩小，达到意想不到的效果。-image to enlarge the source code, you can use this code to vector and raster map adheres to the pan and zoom to reach an unexpected effect.

绘制直线。直线光栅化功能，程序代码简洁明了，功能简单-Draw a straight line. Linear features, the program code concise, simple functions

计算机图形学光栅几何变换教程 计算机图形学光栅几何变换教程-Geometric transform raster computer graphics tutorial