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rdTriangle Class Reference

A graphical body. More...

#include <rdTriangle.h>

Inheritance diagram for rdTriangle:

List of all members.

Public Types
enum	INTERSECTION {   NONE = 0, POINT_INTERIOR, POINT_VERTEX0, POINT_VERTEX1,   POINT_VERTEX2, POINT_EDGE01, POINT_EDGE12, POINT_EDGE20,   LINE_INTERIOR, LINE_VERTEX0, LINE_VERTEX1, LINE_VERTEX2,   LINE_EDGE01, LINE_EDGE12, LINE_EDGE20 }
Public Member Functions
	rdTriangle ()
	Construct an empty graphics model.
	rdTriangle (IDOM_Element *aElement)
	Construct a graphics model from an XML Element.
virtual	~rdTriangle ()
	Destructor.
void	setVertices (rdVertices *aVertices)
	Set the vertices for this triangle.
rdVertices *	getVertices ()
	Get the vertices for this triangle.
int	getVertex (int aWhich, double rV[3]) const
	Get a specified vertex of the triangle.
int	getVertexIndex (int aWhich) const
	Get the index of a vertex.
void	computeLowerBounds (double rLower[3]) const
	Compute the lower bounds of this triangle.
void	computeUpperBounds (double rUpper[3]) const
	Compute the upper bounds of this triangle.
INTERSECTION	computeIntersection (const rdLine *aLine, double rP1[3], double rP2[3]) const
	Compute the intersection of a specified line and this triangle.
INTERSECTION	computeIntersection (const double aP[3]) const
	Compute how a point intersects this triangle.
void	updateIndicies ()
	Update the triangle indices based on the names of the vertices.
virtual void	updateObject (bool aDeep=true)
	Update this object based on its XML node.
virtual void	updateNode (bool aDeep=true)
	Update the XML node representing this object.
void	updateData ()
	Update the member data of this object based on its XML node.
Private Member Functions
void	setNull ()
	Set NULL values for all member variables.
Private Attributes
rdVertices *	_verts
char *	_v3dNames [3]
int	_v3dIndex [3]

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Detailed Description

A graphical body.

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Constructor & Destructor Documentation

rdTriangle::rdTriangle (  IDOM_Element *  aElement  )

Construct a graphics model from an XML Element. Parameters: aElement  XML element.

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Member Function Documentation

rdTriangle::INTERSECTION rdTriangle::computeIntersection (  const double  aP[3]  )  const

Compute how a point intersects this triangle. It is assumed that the point lies in the plane of the triangle. The following types of intersections are possible: 1) NONE 2) POINT_INTERIOR 3) POINT_VERTEX0 4) POINT_VERTEX1 5) POINT_VERTEX2 6) POINT_EDGE01 7) POINT_EDGE12 8) POINT_EDGE20 Parameters: aP  Point in question. Returns: Intersection type ( See also: INTERSECTION).

rdTriangle::INTERSECTION rdTriangle::computeIntersection (  const rdLine *  aLine, double  rP1[3], double  rP2[3] )  const

Compute the intersection of a specified line and this triangle. The following types of intersections are possible: 1) NONE 2) POINT_INTERIOR 3) POINT_VERTEX0 4) POINT_VERTEX1 5) POINT_VERTEX2 6) POINT_EDGE01 7) POINT_EDGE12 8) POINT_EDGE20 9) LINE_INTERIOR 10) LINE_VERTEX0 11) LINE_VERTEX1 12) LINE_VERTEX2 13) LINE_EDGE01 14) LINE_EDGE12 15) LINE_EDGE20 If there is a point intersection, the value of this intersection point is returned in rP1. If there is a line intersection, the first point of the line segment is returned in rP1 and the second point of the line segment is returned in rP2. Parameters: aLine  Line for which to compute the intersection. rP1  First point of intersection. If there is no intersection, the value returned in rP1 is meaningless. rP2  Second point of intersection. If the intersection is not a line, the value returned in rP2 is meaningless. Returns: Intersection type ( See also: INTERSECTION).

void rdTriangle::computeLowerBounds (  double  rLower[3]  )  const

Compute the lower bounds of this triangle. Parameters: rLower  Lower bounds.

void rdTriangle::computeUpperBounds (  double  rUpper[3]  )  const

Compute the upper bounds of this triangle. Parameters: rUpper  Upper bounds.

int rdTriangle::getVertex (  int  aWhich, double  rV[3] )  const

Get a specified vertex of the triangle. Parameters: aWhich  Which vertex- 0, 1, or 2. rV  Vertex. Returns: -1 on error; 0 otherwise. If an error is encountered the values returned in rV are undefined.

int rdTriangle::getVertexIndex (  int  aWhich  )  const

Get the index of a vertex. Parameters: aWhich  Which vertex index to get- 0, 1, or 2. Returns: Vertiex index.

rdVertices * rdTriangle::getVertices (   )

Get the vertices for this triangle. Returns: Vertices to which this triangle points.

void rdTriangle::setVertices (  rdVertices *  aVertices  )

Set the vertices for this triangle. Parameters: aVertices  Vertices to which this triangle points.

void rdTriangle::updateData (   )

Update the member data of this object based on its XML node. Member objects (children) are not updated.

void rdTriangle::updateNode (  bool  aDeep = true  )  [virtual]

Update the XML node representing this object. Parameters: aDeep  If true, update the XML node of this object AND the XML nodes of all class members that are rdObjects (child nodes); if false, update only the XML node of this object without updating the XML nodes of its children. Reimplemented from rdObject.

void rdTriangle::updateObject (  bool  aDeep = true  )  [virtual]

Update this object based on its XML node. Parameters: aDeep  If true, update this object and all its child objects (that is, member variables that are rdObject's); if false, update only the member variables that are not rdObject's. Reimplemented from rdObject.

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The documentation for this class was generated from the following files:

• rdTriangle.h
• rdTriangle.cpp

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