RayGroup Class Reference

Inheritance diagram for RayGroup:

List of all members.

Public Member Functions
void	addShape (RayShape *shape)
int	shapeNum (void)
void	write (int indent, FILE *fp=stdout)
virtual void	writeBegin (int indent, FILE *fp=stdout)=0
virtual void	writeEnd (int indent, FILE *fp=stdout)=0
virtual Matrix4D	getMatrix (void)=0
virtual Matrix4D	getInverseMatrix (void)=0
virtual Matrix4D	getNormalMatrix (void)=0
BoundingBox3D	setBoundingBox (void)
double	intersect (Ray3D ray, struct RayIntersectionInfo &iInfo, double mx=-1)
void	setUpOpenGL (int cplx, int setCallList)
int	drawOpenGL (int materialIndex)
int	getOpenGLCallList (void)
Public Attributes
int	sNum
RayShape **	shapes
RayShapeHit *	hits

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Detailed Description

This class represents a node in the scene graph with an associated transformation.

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Member Function Documentation

void RayGroup::addShape (  RayShape *  shape  )

This method allows one to add a shape to the node.

int RayGroup::drawOpenGL (  int  materialIndex  )  [virtual]

This method calls the necessary OpenGL commands to render the primitive. Implements RayShape.

virtual Matrix4D RayGroup::getInverseMatrix (  void   )  [pure virtual]

This method returns the inverse of the transformation associated with the group. Implemented in StaticRayGroup, and ParametrizedRayGroup.

virtual Matrix4D RayGroup::getMatrix (  void   )  [pure virtual]

This method returns the transformation associated with the group. Implemented in StaticRayGroup, ParametrizedRayGroup, ParametrizedMatrix4D, ParametrizedEulerAnglesAndTranslation, ParametrizedClosestRotationAndTranslation, ParametrizedRotationLogarithmAndTranslation, and ParametrizedQuaternionAndTranslation.

virtual Matrix4D RayGroup::getNormalMatrix (  void   )  [pure virtual]

This method returns the transformation that acts on the surface normals. Implemented in StaticRayGroup, and ParametrizedRayGroup.

int RayGroup::getOpenGLCallList (  void   )

This method generates an OpenGL call list and returns the handle.

double RayGroup::intersect (  Ray3D  ray, struct RayIntersectionInfo &  iInfo, double  mx = -1 )  [virtual]

This method computes the intersection of the shape with the ray. If the ray hits the shape and either mx is less than zero or the intersection occurs at a distance less than mx along the ray the intersection information in iInfo is set and a value greater than 0 is returned. Otherwise, -1 is returned. (This is useful for shadow testing when you may want to ignore hits beyond a certain distance). Implements RayShape.

BoundingBox3D RayGroup::setBoundingBox (  void   )  [virtual]

This method sets and returns a bounding box containing the shape. Implements RayShape.

void RayGroup::setUpOpenGL (  int  cplx, int  setCallList )  [virtual]

This method sets up all the stuff that's necessary prior to OpenGL rendering. The value cplx represents the desired resolution of tessalation for objects such as spheres, cylinders, etc.. Implements RayShape.

int RayGroup::shapeNum (  void   )

This method returns the number of shapes associated to the node.

void RayGroup::write (  int  indent, FILE *  fp = stdout )  [virtual]

This method writes the RayShape out to a .ray file, indenting the output by the specified amount. If no file is specified, the information gets written to stdout. Implements RayShape.

virtual void RayGroup::writeBegin (  int  indent, FILE *  fp = stdout )  [pure virtual]

This virtual method specifies how the header of the node should be written out to a .ray file. Implemented in StaticRayGroup, and ParametrizedRayGroup.

virtual void RayGroup::writeEnd (  int  indent, FILE *  fp = stdout )  [pure virtual]

This virtual method specifies how the footer of the node should be written out to a .ray file. Implemented in StaticRayGroup, and ParametrizedRayGroup.

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Member Data Documentation

class RayShapeHit* RayGroup::hits

An array of RayShapeHit elements that can be used for bounding-volume sorting

RayShape** RayGroup::shapes

The shapes that are associated to the node

int RayGroup::sNum

The number of shapes associated to the node

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