ISO 10303-518:2002 工业自动化系统和综合-产品数据表示和交换-第518部分：应用表示构造：机械设计色调表示

标准编号：ISO 10303-518:2002

中文名称：工业自动化系统和综合-产品数据表示和交换-第518部分：应用表示构造：机械设计色调表示

英文名称：Industrial automation systems and integration — Product data representation and exchange — Part 518: Application interpreted construct: Mechanical design shaded presentation

发布日期：2002-08

标准范围

ISO 10303-518:2002规定了综合资源的解释，以满足描述阴影形状的视觉呈现的要求。诸如颜色的基本表示属性可以与点、曲线、表面和拓扑结构相关联。高级可视化属性，例如表面反射率和透明度，可以应用于曲线和表面。投影算法包括光源、隐藏线和隐藏面的去除。不包括注释的描述。以下内容属于ISO 10303-518:2002的范围:机械设计形状表示的可视化表示；将视觉表示属性分配给几何和拓扑项目；用于将3D形状投影到平面上的算法；窗口内形状投影的位置；一个窗口内的多个视图；窗口的背景颜色；隐藏线和隐藏面去除；光源；点、曲线和曲面颜色；点字体；曲线字体；曲线样式取决于曲线在曲面定义中的作用；示例边界曲线和栅格曲线在曲面的定义中扮演不同的角色。阴影和非阴影表面颜色；表面特性，如透明度和反射率；预定义的颜色；预定义的曲线样式。以下内容超出了ISO 10303-518:2002的范围:注释的呈现，即文本和符号；将几何项目分配给图层；多个窗口；产品的表示。注:ISO 10303-518:2002的范围与ISO 10303-517密切相关。本部分扩展了ISO 10303-517的范围，还包括隐藏线和隐藏曲面表示、光源以及曲线和曲面渲染。

ISO 10303-518:2002 specifies the interpretation of the integrated resources to satisfy requirements for the description of the visual presentation of shaded shape. Basic presentation attributes, such as colour, can be associated with points, curves, surfaces, and topological constructs. Advanced visualization properties, such as surface reflectance and transparency, may be applied to curves and surfaces. The projection algorithm includes light sources and hidden line and hidden surface removal. The description of annotation is not included.The following are within the scope of ISO 10303-518:2002:

• the visual presentation of mechanical design shape representations;
• the assignment of visual presentation attributes to geometric and topological items;
• algorithms for the projection of 3D shapes onto planes;
• the location of shape projections within a window;
• multiple views within one window;
• the background colour of a window;
• hidden line and hidden surface removal;
• light sources;
• point, curve, and surface colour;
• point font;
• curve font;
• curve styles dependent on the role of the curves in the definition of a surface;

EXAMPLE Boundary curves and grid curves play different roles in the definition of a surface.

• shaded and unshaded surface colour;
• surface characteristics such as transparency and reflectance;
• pre-defined colours;
• pre-defined curve styles.

The following are outside the scope of ISO 10303-518:2002:

• the presentation of annotation, i.e. text and symbols;
• the assignment of geometric items to layers;
• multiple windows;
• representation of products.

NOTE The scope of ISO 10303-518:2002 is closely related to ISO 10303-517. This part extends the scope of ISO 10303-517 to also include hidden line and hidden surface representations, light sources, and curve and surface rendering.

标准预览图