摘要
选择双三次Bézier面片逼近复杂曲面.在对曲面三角形网格划分和平面图案矢量化形成参数式曲线的基础上,将复杂曲面上图案映射计算问题转化为点或直线的映射.算法先得到图案空间与对象空间的坐标映射对应关系,利用对象空间与屏幕空间的透视投影原理,确定图案空间与屏幕空间的对应关系.
The bicubic Bézier patches are chosen to approximate complex surface.Based on dividing the surface by triangular reseau and transforming the plane pattern into vector graph, the problem of pattern mapping on complex surface can be translated into the mapping of point or line.Calculating firstly the mapping relation of coordinate between pattern space and object space then using principle of perspective projection in the object space and screen space,the corresponding relation between pattern space and screen space can be obtained.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第5期564-567,共4页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古自治区教育厅科研基金项目(496036)
关键词
复杂曲面
矢量化
贴图
图案
complex surface
vector graph
paste
pattern
