二维图形几何变换的实现，MFC，平移、比例、对称、旋转等-The realization of two-dimensional graphics geometric transformation, MFC, translation, proportion, symmetry, rotation, etc.

二维图形几何变换,包括旋转，平移，翻转，屏幕坐标与实际坐标转化-Two-dimensional graphics geometric transformation