IfcGeometricProjectionEnum

IfcGeometricProjectionEnum定义了可以在语义上区分的各种表示类型。形状表示的不同详细级别通常由表示类型控制。

IFC2x2中增加的新枚举。

Enumeration definition

ConstantDescription
GRAPH_VIEW Geometric display representation that shows an abstract, often 1D element representation, e.g. representing a wall by its axis line.
SKETCH_VIEW Geometric display representation that shows an abstract, often 2D element representation, e.g. representing a wall by its two foot print edges, surpressing any inner layer representation.
MODEL_VIEW Geometric display representation that shows a full 3D element representation, e.g. representing a wall by its volumetric body.
PLAN_VIEW

显示完整二维元素表示的几何显示表示法,详细程度通常取决于目标比例,例如,通过墙的两个脚印边缘和所有内层的边缘来表示墙。投影显示在俯视图中。

REFLECTED_PLAN_VIEW 显示完整二维元素表示的几何显示表示法,详细程度通常取决于目标比例,例如,通过墙的两个脚印边缘和所有内层的边缘来表示墙。投影如下图所示。
SECTION_VIEW

几何显示表示法显示完整的二维图元表示法时,详细程度通常取决于目标比例,例如,如果图元被剖面线切割,则通过两个内/外边和所有内层的边来表示墙。

ELEVATION_VIEW

几何显示表示法显示完整的二维图元表示法时,详细程度通常取决于目标比例,例如,如果图元位于立面视图中,则通过其边界边表示墙。

USERDEFINED A user defined specification is given by the value of the UserDefinedTargetView attribute.
NOTDEFINED No specification given.
 

EXPRESS Specification

TYPE IfcGeometricProjectionEnum = ENUMERATION OF (
 GRAPH_VIEW,
 SKETCH_VIEW,
 MODEL_VIEW,
 PLAN_VIEW,
 REFLECTED_PLAN_VIEW,
 SECTION_VIEW,
 ELEVATION_VIEW,
 USERDEFINED,
 NOTDEFINED);
END_TYPE;
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原文地址:https://www.cnblogs.com/herd/p/14409164.html