Three-dimensional affine transformation formula and affine array fomula in three-dimensional coordi-nate system, giving a simple coordinate transformation formula are deduced and its algorithm is proved by QT class libraries based on C++ which could be applied to graphic adapter that imitates three dimension by two dimension, such as three-dimensional transformation imitation in flash and three-dimensional graphic transformation in GUI pro-gramming.%根据二维仿射变换公式推导了三维仿射变换公式,给出了三维坐标系中的仿射矩阵表示公式.同时提出了一种简单的三维到二维的坐标转换公式,并且使用基于C++的QT类库对这种算法进行了实现.这种算法可以应用于一些使用二维模拟三维的图形处理软件中,比如flash中的三维变换模拟和GUI编程中的三维图形变换等情况下.
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