RayTriangle Class Reference

Inheritance diagram for RayTriangle:

List of all members.

Public Member Functions
int	read (FILE *fp, int *materialIndex, RayVertex *vList, int vSize)
void	write (int indent, FILE *fp=stdout)
double	intersect (Ray3D ray, struct RayIntersectionInfo &iInfo, double mx=-1)
BoundingBox3D	setBoundingBox (void)
void	setUpOpenGL (int cplx, int setCallList)
int	drawOpenGL (int materialIndex)
Public Attributes
RayVertex *	v [3]
RayMaterial *	material

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Detailed Description

This class represents a triangle and is specified by three pointers to the three vertices that define it.

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Member Function Documentation

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

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

double RayTriangle::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 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. Implements RayShape.

int RayTriangle::read (  FILE *  fp, int *  materialIndex, RayVertex *  vList, int  vSize )

This method reads in a RayTriangle from a .ray file. A pointer to the material associated to the triangle is set. The vertex positions are determined by reading in the vertex indices from the file and then looking them up in the vertex list vList

BoundingBox3D RayTriangle::setBoundingBox (  void   )  [virtual]

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

void RayTriangle::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.

void RayTriangle::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.

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Member Data Documentation

class RayMaterial* RayTriangle::material

The material associated with the triangle

class RayVertex* RayTriangle::v[3]

The vertices of the triangle

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