Clipping is the process of determining how much of a given line segment lies within the boundaries of the display screen. Homogeneous coordinates are a convenient mathematical device for representing and transforming objects. The space represented by homogeneous coordinates is not, however, a simple Euclidean 3-space. It is, in fact, analagous to a topological shape called a "projective plane". The clipping problem is usually solved without consideration for the differences between Euclidean space and the space represented by homogeneous coordinates. For some constructions, this leads to errors in picture generation which show up as lines marked invisible when they should be visible. This paper will examine these cases and present techniques for correctly clipping the line segments.
机译:齐次坐标中线和线段裁剪的新方法
机译:使用半均匀坐标进行线裁剪
机译:直角坐标系中均质磁场中任意方向的均质磁球体的势和场
机译:均相坐标变换法测定铣削过程中的显性倍数
机译:全面的均匀奇点和模态衍生物的完全无协调
机译:使用齐次和笛卡尔坐标的稳态方法
机译:使用同构坐标裁剪