摘要
推导出来的屏幕上点的斜面透视投影坐标式,完全满足计算机易于使用的参数方法的要求。用它编程,不但可以把正投影中点的坐标或曲线的参数方程转换成屏幕上能够直接显示点的透视投影的坐标或曲线的透视投影的参数方程,而且除了赋值不同外,对绘一点透视,二点透视和三点透视都具有通用性。此法与矩阵法相比,数学知识简单,易运用,特别是完全可以直接应用曲线的参数方程,更显示其优点。
The coordinate formula derived in this paper for the perspective projection of tilted bildebene of points on the screen satisfactorily meets the demand of parmetric methods easly applicable in computer graphic,the program developed with the formla can enable the coordinate for points and the parametric formula curves in the orthographic projection to be transferred into the coordinate for points and parametric formula for cunes in the perspective projection to be directly displaged on the screen.The progrom thus developed can be universally cy applied to the drawing of perspective projection with one tow and three fluchtpunkts if assigned values accordingly.comparced with matrix approach,This approach has the advantage of simple mathmatics knowledge,being easily applying,especially its divert applying into parameter equation of curve.
出处
《工程图学学报》
CSCD
2003年第1期78-85,共8页
Journal of Engineering Graphics
关键词
斜面透视投影坐标式
计算机应用
正投影
透视图
计算机绘图
computer application
orthographic projection to be transferred into perspective projection
drawing of perspective with computer
coordinat for perspective projection
