仿射变换是空间直角坐标变换的一种，它是一种二维坐标到二维坐标之间的线性变换，保持二维图形的“平直线”和“平行性”，其可以通过一系列的原子变换的复合来实现，包括平移(Translation)、缩放（Scale）、翻转（Flip）、旋转（Rotation）和剪切(Shear)。-Affine transformation is a transformation of Cartesian space, it is a linear transformation of two-dimensional coordinates to two-dimensional coordinates between the two-dimensional graphics remain "flat line" and "parallelism", which through a series of complex atomic transformation to achieve, including translation (Translation), scaling (Scale), flip (Flip), rotation (Rotation) and shear (Shear).