Description: the use of the procedure can be used to a limited space within 3D imaging of simple algorithm. According to the limited space the end of all surface sampling points in 3D space within the Cartesian coordinates (x, y, z), then be converted into computer on the screen coordinates of the pixel (x, y), thus drawn with a real sense of three-dimensional images. Practice has proved that this algorithm can be used conveniently on the computer screen drawing arbitrary rotation of three-dimensional image.
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