这是一个液化图片的程度，在processing里运行，它是模仿了photoshop里的液化功能。其原理是给图片加上纹理坐标，然后将网格和纹理坐标连接起来。-This is a picture of liquefaction and run in processing, it is emulating the the liquefaction features in Photoshop. Its principle is to add to the picture texture coordinates, and then connect the mesh and texture coordinates.