CookTorranceShader Class Reference

#include <CookTorranceShader.h>

Inherits Shader.

Inheritance diagram for CookTorranceShader:

[legend]Collaboration diagram for CookTorranceShader:

[legend]List of all members.

Public Member Functions
	CookTorranceShader (Scene *scene, RGBAColor color, float ka, float kd, float ks, float slope=0.12f, float lambda=0.2f)
virtual RGBAColor	shade (const Ray &ray) const
Private Member Functions
const float	distribution (const Vec3f &normal, const Vec3f &Halfway) const
const float	geometry (const Vec3f &normal, const Vec3f &Halfway, const Vec3f &LightDir, const Vec3f &ViewDir) const
const float	fresnel (const Vec3f &Halfway, const Vec3f &LightDir) const
Private Attributes
RGBAColor	mColor
float	mKa
float	mKd
float	mKs
float	mSlope
float	mLambda

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Detailed Description

Physical based shader developed by Cook and Torrance

Author:

Christian Engels

Definition at line 9 of file CookTorranceShader.h.

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Constructor & Destructor Documentation

CookTorranceShader::CookTorranceShader	(	Scene *	scene,
		RGBAColor	color,
		float	ka,
		float	kd,
		float	ks,
		float	slope = 0.12f,
		float	lambda = 0.2f
	)			[inline]

Constructor

Parameters:

	scene	Pointer to the scene
	color	Base color
	ka	Ambient coefficient
	kd	Diffuse reflection coefficients
	ks	Specular refelection coefficients
	slope	The slope of the microfasets (if m is small more directed reflection)
	lambda	Complex index of refraction

Definition at line 22 of file CookTorranceShader.h.

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Member Function Documentation

virtual RGBAColor CookTorranceShader::shade

(

const Ray &

ray

)

const [inline, virtual]

Calculate color and shadows

Implements Shader.

Definition at line 41 of file CookTorranceShader.h.

References Ray::dir(), distribution(), Vec3f::dot(), fresnel(), geometry(), Scene::getLight(), Ray::hit(), Light::illuminate(), Scene::lightsCount(), LOG, mColor, mKa, mKd, mKs, Shader::mScene, Shader::mTextures, Shader::normal(), Light::numberOfRays(), Ray::org(), RGBAColor::rgb(), RGBAColor::scale(), Vec3f::scaled(), Ray::t(), and Primitive::texCoord().

const float CookTorranceShader::distribution	(	const Vec3f &	normal,
		const Vec3f &	Halfway
	)			const [inline, private]

Calculate the distribution part of the formula

Definition at line 108 of file CookTorranceShader.h.

References Vec3f::dot(), mSlope, and Shader::normal().

Referenced by shade().

const float CookTorranceShader::geometry	(	const Vec3f &	normal,
		const Vec3f &	Halfway,
		const Vec3f &	LightDir,
		const Vec3f &	ViewDir
	)			const [inline, private]

Calculate the geometry term

Definition at line 118 of file CookTorranceShader.h.

References Vec3f::dot(), min(), and Shader::normal().

Referenced by shade().

const float CookTorranceShader::fresnel	(	const Vec3f &	Halfway,
		const Vec3f &	LightDir
	)			const [inline, private]

Calculate the fresnel term

Definition at line 127 of file CookTorranceShader.h.

References Vec3f::dot(), and mLambda.

Referenced by shade().

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Member Data Documentation

RGBAColor CookTorranceShader::mColor [private]

Definition at line 150 of file CookTorranceShader.h.

Referenced by shade().

float CookTorranceShader::mKa [private]

Definition at line 151 of file CookTorranceShader.h.

Referenced by shade().

float CookTorranceShader::mKd [private]

Definition at line 152 of file CookTorranceShader.h.

Referenced by shade().

float CookTorranceShader::mKs [private]

Definition at line 153 of file CookTorranceShader.h.

Referenced by shade().

float CookTorranceShader::mSlope [private]

Definition at line 154 of file CookTorranceShader.h.

Referenced by distribution().

float CookTorranceShader::mLambda [private]

Definition at line 155 of file CookTorranceShader.h.

Referenced by fresnel().

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

• src/CookTorranceShader.h

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