编写代码实现二维几何变换：旋转、比例，平移，对称，错切变换。-Develop code that implements two-dimensional geometric transformations: rotation, scaling, translation, symmetry, shear transformation.

IFS分形迭代系统的仿射变换实现（自我迭代，旋转，放缩，错切）。有源码和参考文献。-IFS(Iterated Function System) and its affine transform (self iteration, rotation, scaling, shearing). source source and reference tutorial are provided