Class Ifc4x1::IfcLightDistributionData

Nested Relationships

This class is a nested type of Struct Ifc4x1.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4x1::IfcLightDistributionData : public IfcUtil::IfcBaseEntity

IfcLightDistributionData defines the luminous intensity of a light source given at a particular main plane angle. It is based on some standardized light distribution curves; the MainPlaneAngle is either the

A angle; if the IfcLightDistributionCurveEnum is set to TYPE_A B angle; if the IfcLightDistributionCurveEnum is set to TYPE_B C angle; if the IfcLightDistributionCurveEnum is set to TYPE_C

For each MainPlaneAngle (considered as being the row of a table) a list of SecondaryPlaneAngle’s are given (considered to be the columns of a table). They are either the:

α angle; if the IfcLightDistributionCurveEnum is set to TYPE_A β angle; if the IfcLightDistributionCurveEnum is set to TYPE_B γ angle; if the IfcLightDistributionCurveEnum is set to TYPE_C

For each pair of MainPlaneAngle and SecondaryPlaneAngle the LuminousIntensity is provided (the unit is given by the IfcUnitAssignment referring to the LuminousIntensityDistributionUnit, normally cd/klm).

HISTORY: New entity in IFC2x2.

Public Types

typedef IfcTemplatedEntityList<IfcLightDistributionData> list

Public Functions

double MainPlaneAngle() const

The main plane angle (A, B or C angles, according to the light distribution curve chosen).

void setMainPlaneAngle(double v)
std::vector<double> SecondaryPlaneAngle() const

The list of secondary plane angles (the &#945;, &#946; or &#947; angles) according to the light distribution curve chosen.

NOTE: The SecondaryPlaneAngle and LuminousIntensity lists are corresponding lists.

void setSecondaryPlaneAngle(std::vector<double> v)
std::vector<double> LuminousIntensity() const

The luminous intensity distribution measure for this pair of main and secondary plane angles according to the light distribution curve chosen.

void setLuminousIntensity(std::vector<double> v)
const IfcParse::entity &declaration() const
IfcLightDistributionData(IfcEntityInstanceData *e)
IfcLightDistributionData(double v1_MainPlaneAngle, std::vector<double> v2_SecondaryPlaneAngle, std::vector<double> v3_LuminousIntensity)

Public Static Functions

const IfcParse::entity &Class()