根据映射的基本原理，将由计算机设计制作的图案应用于产品的装潢设计，能产生极佳的装饰效果．映射函数是将平面图形转换到立体产品上的具体算法，选取正确的映射函数是实现纹理贴图的关键．根据常见产品的几何形状，给出了正方体、圆柱体、球体表面的映射函数，通过微机绘图的通用程序，能实现装潢效果图的输出． According to the basic principles of mapping, the design made by the computer design applied to the product’s decorating design, can produce excellent decorative effect. The mapping function is a specific algorithm for converting a planar graphic to a stereoscopic product. Selecting the correct mapping function is the key to texture mapping. According to the geometric shapes of common products, the mapping functions of cuboid, cylinder and sphere surface are given. Through the common program of computer graphics, the output of decorating renderings can be realized.