RayShape Class Reference

Inheritance diagram for RayShape:

List of all members.

Public Member Functions
virtual void	write (int indent, FILE *fp=stdout)=0
virtual double	intersect (Ray3D ray, struct RayIntersectionInfo &iInfo, double mx=-1)=0
virtual BoundingBox3D	setBoundingBox (void)=0
virtual void	setUpOpenGL (int cplx, int setCallList)=0
virtual int	drawOpenGL (int materialIndex)=0
virtual int	isStatic (void)
Public Attributes
BoundingBox3D	bBox
int	openGLCallListID
int	openGLComplexity

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Detailed Description

This is the abstract class that all ray-traceable objects must implement.

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Member Function Documentation

virtual int RayShape::drawOpenGL (  int  materialIndex  )  [pure virtual]

This method calls the necessary OpenGL commands to render the primitive. Implemented in RayBox, RayCone, RayCylinder, RayFileInstance, RayGroup, RaySphere, and RayTriangle.

virtual double RayShape::intersect (  Ray3D  ray, struct RayIntersectionInfo &  iInfo, double  mx = -1 )  [pure 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 t 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). Either way the isectCounter is incremented by one. Implemented in RayBox, RayCone, RayCylinder, RayFileInstance, RayGroup, RaySphere, and RayTriangle.

virtual int RayShape::isStatic (  void   )  [inline, virtual]

This method returns a value of 1 if the RayShape's geometry doesn't change. Reimplemented in RayFileInstance, StaticRayGroup, and ParametrizedRayGroup.

virtual BoundingBox3D RayShape::setBoundingBox (  void   )  [pure virtual]

This method sets and returns a bounding box containing the shape. Implemented in RayBox, RayCone, RayCylinder, RayFileInstance, RayGroup, RaySphere, and RayTriangle.

virtual void RayShape::setUpOpenGL (  int  cplx, int  setCallList )  [pure 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.. Implemented in RayBox, RayCone, RayCylinder, RayFileInstance, RayGroup, RaySphere, and RayTriangle.

virtual void RayShape::write (  int  indent, FILE *  fp = stdout )  [pure 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. Implemented in RayBox, RayCone, RayCylinder, RayFileInstance, RayGroup, RaySphere, and RayTriangle.

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Member Data Documentation

BoundingBox3D RayShape::bBox

The bounding box of the shape

int RayShape::openGLCallListID

The OpenGL call list identifier

int RayShape::openGLComplexity

The complexity for the rasterization of the shape

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