OdDbRay Class

Class Hierarchy

Syntax

C++

class OdDbRay : public OdDbCurve;

File

DbRay.h

Description

This class implements the ray object (Ray entity) in the database. This class inherits the base functionality of entities. A ray is a semi-infinite line.

See Also

TD_Db

Example of Working with the Ray Object

Working with Rays

OdDbXline, OdDbLine classes

Group

OdDb Classes

Public Methods

	Name	Description
	OdDbRay	Builds an instance of the ray object.

OdDbRay Methods

	Name	Description
	basePoint	Returns the WCS coordinates of the base point from which the ray outs (DXF 10) as three-dimensional point instance.
	dwgInFields	Reads the .dwg file data of this object.
	DWGMAP_DECLARE_MEMBERS	This is DWGMAP_DECLARE_MEMBERS, a member of class OdDbRay.
	dwgOutFields	Writes the .dwg file data of this object.
	dxfInFields	Reads the DXF data of this object.
	dxfOutFields	Writes the DXF data of this object.
	getArea	This method is not applicable for the ray entity.
	getDistAtParam	Computes the distance along the ray measured from the base point in drawing units at the specified parameter.
	getEndParam	This method is not applicable for the ray entity.
	getEndPoint	This method is not applicable for the ray entity.
	getFirstDeriv	Computes the first derivative for the specified parameter of the ray entity and returns the three-dimensional vector instance. The first derivative is constant for any point of the ray.
	getOdGeCurve	Returns an OdGeCurve3d that is geometrically identical to this OdDbCurve.
	getParamAtDist	Computes the parameter at the distance along the ray measured from the base point.
	getParamAtPoint	Computes the parameter at the point placed on the ray.
	getPlane	Gets an arbitrary plane passed through the ray entity. This method is inherited from the OdDbEntity class.
	getPointAtParam	Computes the WCS coordinates of the point on the ray at the specified parameter value.
	getSecondDeriv	Computes the second derivative for the specified parameter of the ray entity and returns the three-dimensional vector instance. The second derivative has (0,0,0) coordinates for any point of the ray.
	getStartParam	Gets the start parameter value. The start parameter equals a zero for rays.
	getStartPoint	Computes the WCS coordinates of the start point of the ray for which the parameter equals zero. The start point coincides with the base point.
	isClosed	Returns true if and only if this Curve object is closed.
	isPeriodic	Returns true if and only if this Curve object is periodic.
	isPlanar	Determines whether the ray entity is planar as a Boolean value and returns True. This method is inherited from the OdDbEntity class.
	setBasePoint	Sets the base point of the from which the ray outs (DXF 10). The initial value is (0,0,0) by default.
	setFromOdGeCurve	Takes an OdGeCurve3d and sets this OdDbCurve to be geometrically identical to the OdGeCurve3d.
	setUnitDir	Sets the direction vector of the ray (DXF 11) in WCS. The initial value is (0,0,1) by default.
	subGetClassID	overridables
	subGetGeomExtents
	subTransformBy	This is subTransformBy, a member of class OdDbRay.
	subWorldDraw	This is subWorldDraw, a member of class OdDbRay.
	TD_USING	This is the overview for the TD_USING method overload.
	unitDir	Returns the WCS unit direction vector of the ray (DXF 11) as three-dimensional vector instance. This vector orients the ray in would space.

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