Instance Class Reference

A Surface transformed according to a linear transformation. More...

#include <surfaces/Instance.h>

Inheritance diagram for Instance:

[legend]List of all members.

Public Member Functions
	Instance (const Surface *s, const Matrix &t, const Matrix &t_inv, SurfaceShader *mtl, LightShader *light)
bool	hit (Ray &r, HitRecord &rec, Context &context) const
BBox	boundingBox (double time0, double time1) const
bool	overlapsBox (const BBox &box) const
Public Attributes
const Surface *	surface
Matrix	transform
	The transformation matrix.
Matrix	inv_transform
	The inverse of the transformation Matrix.
SurfaceShader *	sshader
	A SurfaceShader to override the original.
LightShader *	lshader
	A LightShader to override the original.

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Detailed Description

A Surface transformed according to a linear transformation.

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Member Function Documentation

bool Instance::hit (  Ray &  r, HitRecord &  rec, Context &  context )  const [virtual]

Intersect given ray with the surface. Parameters: [in,out]  r  Ray to be intersected. [in,out]  rec  Struct for passed back shading geometry. [in,out]  context  Rendering context. Returns: Returns true if a new closest intersection has been found. Implements Surface.

BBox Instance::boundingBox (  double  time0, double  time1 )  const [virtual]

Calculate the bounding box of the surface. Parameters: [in]  time0  Minimum of time interval being sampled. [in]  time1  Maximum of time interval being sampled. Returns: The bounding box of the object in the interval [time0, time1). Implements Surface.

bool Instance::overlapsBox (  const BBox &  box  )  const [virtual]

Determine if this surface overlaps the input axis aligned box. Parameters: [in]  box  Bounding box to test against. Returns: False if the surface definitely does not overlap the box. Implements Surface.

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

• Instance.h
• Instance.cc

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