IfcLightSourceAmbient

注：根据ISO 10303-46的定义：

光源环境图元是光源的子类型。它将照亮与曲面的方向和位置无关的曲面。

注：相应的ISO 10303实体：光源环境。有关正式标准的最终定义，请参考ISO/IS 10303-46:1994，第31页。

注：除ISO 10303-46中定义的属性外，ISO/IEC 14772-1:1997（VRML）Ambientity的附加属性继承自父类型。

IFC2x中增加的新实体，在IFC2x2中重命名和增强。

 

 

 

#	Attribute	Type	Cardinality	Description	C
IfcRepresentationItem
	LayerAssignment	IfcPresentationLayerAssignment @AssignedItems	S[0:1]	Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.	X
	StyledByItem	IfcStyledItem @Item	S[0:1]	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.	X
IfcGeometricRepresentationItem
IfcLightSource
1	Name	IfcLabel	[0:1]	The name given to the light source in presentation.	X
2	LightColour	IfcColourRgb	[1:1]	Definition from ISO/CD 10303-46:1992: Based on the current lighting model, the colour of the light to be used for shading. Definition from VRML97 - ISO/IEC 14772-1:1997: The color field specifies the spectral color properties of both the direct and ambient light emission as an RGB value.	X
3	AmbientIntensity	IfcNormalisedRatioMeasure	[0:1]	Definition from VRML97 - ISO/IEC 14772-1:1997: The ambientIntensity specifies the intensity of the ambient emission from the light. Light intensity may range from 0.0 (no light emission) to 1.0 (full intensity).	X
4	Intensity	IfcNormalisedRatioMeasure	[0:1]	Definition from VRML97 - ISO/IEC 14772-1:1997: The intensity field specifies the brightness of the direct emission from the ligth. Light intensity may range from 0.0 (no light emission) to 1.0 (full intensity).	X
IfcLightSourceAmbient

EXPRESS Specification

ENTITY IfcLightSourceAmbient
 SUBTYPE OF (IfcLightSource);
END_ENTITY;