本文给出了一种只用加、减运算就能求水平线与凹多边形边界交点的方法。
This paper gives an algorithm of crossings between horizontal lines and the boundaries of a concave polygon by means of mere addition and subtraction.
利用齿坯实体模型和刀具实体模型做布尔减运算，来实现模拟工件材料的去除过程；
The cutting process was performed through subtraction boolean operation of the solid model of workpiece and cutter.
自增自减运算是C语言常用的运算，它只能作用于变量，不能作用于常量或表达式。
Self-increase operation and the self-reduction operation are the operations used in C language, they can only act on the variable, not act on the constant or the expression.
应用推荐