RayBox Class Reference

Inheritance diagram for RayBox:

List of all members.

Public Member Functions
int	read (FILE *fp, int *materialIndex)
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
Point3D	center
Point3D	length
RayMaterial *	material

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Detailed Description

This class represents a box and is defined by its center and the length of the sides.

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Member Function Documentation

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

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

double RayBox::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 RayBox::read (  FILE *  fp, int *  materialIndex )

This method reads in a RayBox from a .ray file. A pointer to the material associated to the triangle is set.

BoundingBox3D RayBox::setBoundingBox (  void   )  [virtual]

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

void RayBox::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 RayBox::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

Point3D RayBox::center

The center of the box

Point3D RayBox::length

The lengths of the sides of the box

class RayMaterial* RayBox::material

The material associated with the box

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