工业自动化系统和集成 产品数据表示和交换 第507部分:应用解释构造:几何界面

[中文适用范围]： ISO 10303 的这一部分规定了集成资源的解释，以满足通过几何有界表面模型表示几何形状的要求。 以下内容属于 ISO 10303 本部分的范围： ——3D 点； ——曲线或曲面参数空间中定义的点； ——3D 曲线； ——曲面参数空间中定义的曲线；注意 - 此类曲线也称为 pcurves 或 cons，它们是参数化曲线和曲面上曲线的缩写。 ——基本曲线直线、圆、椭圆、抛物线和双曲线； ——相交曲线； ——至少由三个点组成的折线； ——表面； ——基本表面平面、圆柱、圆锥、圆环和球； ——通过旋转或线性挤压曲线创建的扫掠曲面； ——雕刻的曲线和曲面； ——曲线和曲面的修剪； ——曲线和曲面的组成； ——曲线、曲面和曲面模型的复制； ——曲线和曲面的 3D 偏移。 以下内容超出了 ISO 10303 本部分的范围： ——无界几何； ——自相交几何； ——二维笛卡尔坐标空间中的几何； ——点的复制； ——拓扑实体。 [外文原描述]： This part of ISO 10303 specifies the interpretation of the integrated resources in order to satisfy requirements for the representation of geometric shapes by means of geometrically bounded surface models. The following are within the scope of this part of ISO 10303: — 3D points; — points defined in the parameter space of curves or surfaces; — 3D curves; — curves defined in the parameter space of surfaces; NOTE - Such curves are also known as pcurves or cons, which are acronyms for parametrised curve and curve on surface. — the elementary curves line, circle, ellipse, parabola, and hyperbola; — intersection curves; — polylines that consist of at least three points; — surfaces; — the elementary surfaces plane, cylinder, cone, torus, and sphere; — swept surfaces created by rotation or linear extrusion of a curve; — sculptured curves and surfaces; — trimming of curves and surfaces; — composition of curves and surfaces; — replication of curves, surfaces, and surface models; — 3D offsets of curves and surfaces. The following are outside the scope of this part of ISO 10303: — unbounded geometry; — self-intersecting geometry; — geometry in a 2D cartesian coordinate space; — replication of points; — topological entities.