Triangle Class Reference

#include <Triangle.h>

Inherits Primitive.

Inherited by TexturedSmoothTriangle.

Inheritance diagram for Triangle:

[legend]Collaboration diagram for Triangle:

[legend]List of all members.

Public Member Functions
	Triangle (const Vec3f &a, const Vec3f &b, const Vec3f &c)
virtual	~Triangle ()
bool	intersect (Ray &ray) const
virtual Vec3f	normal (const Ray &ray) const
void	axes (const Ray &, Vec3f &x, Vec3f &y) const
Protected Member Functions
virtual void	calcBounds ()
Protected Attributes
Vec3f	mA
	Vertices.
Vec3f	mB
Vec3f	mC
Vec3f	mEdge1
	axis needed for bump mapping (and could be useful for some other stuff)
Vec3f	mEdge2

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Detailed Description

A simple triangle

Author:

Alex Busenius

Christian Engels

Definition at line 15 of file Triangle.h.

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Constructor & Destructor Documentation

Triangle::Triangle	(	const Vec3f &	a,
		const Vec3f &	b,
		const Vec3f &	c
	)			[inline]

Constructor

Definition at line 20 of file Triangle.h.

References calcBounds().

virtual Triangle::~Triangle

(

)

[inline, virtual]

Destructor

Definition at line 35 of file Triangle.h.

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Member Function Documentation

bool Triangle::intersect

(

Ray &

ray

)

const [inline, virtual]

Intersects with the ray and sets ray.hit and ray.t to the appropiate values

Returns:

true if something hit, false if not

Implements Primitive.

Definition at line 43 of file Triangle.h.

References Vec3f::cross(), Ray::dir(), Vec3f::dot(), EPSILON, mA, mEdge1, mEdge2, Ray::org(), Ray::setHit(), Ray::setUV(), and Ray::t().

virtual Vec3f Triangle::normal

(

const Ray &

ray

)

const [inline, virtual]

Calculate a normal in global coordinates given barycentric coordinates of the hitpoint

Returns:

Returns the normal

Implements Primitive.

Reimplemented in TexturedSmoothTriangle.

Definition at line 82 of file Triangle.h.

References Vec3f::cross(), Ray::hit(), mA, mB, mC, Vec3f::normal(), Ray::obj(), and PhysicalObject::toGlobalCoordinates().

void Triangle::axes	(	const Ray &	,
		Vec3f &	x,
		Vec3f &	y
	)			const [inline, virtual]

gives axis of the triangle (perpendicular to the normal) this is used in bump mapping

See also:

Shader::normal()

Implements Primitive.

Definition at line 98 of file Triangle.h.

References mEdge1, mEdge2, and Vec3f::normal().

virtual void Triangle::calcBounds

(

)

[inline, protected, virtual]

Calculate bounds

Implements Primitive.

Definition at line 129 of file Triangle.h.

References Box::extend(), mA, mB, Primitive::mBounds, and mC.

Referenced by Triangle().

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Member Data Documentation

Vec3f Triangle::mA [protected]

Vertices.

Definition at line 121 of file Triangle.h.

Referenced by calcBounds(), intersect(), and normal().

Vec3f Triangle::mB [protected]

Definition at line 121 of file Triangle.h.

Referenced by calcBounds(), and normal().

Vec3f Triangle::mC [protected]

Definition at line 121 of file Triangle.h.

Referenced by calcBounds(), and normal().

Vec3f Triangle::mEdge1 [protected]

axis needed for bump mapping (and could be useful for some other stuff)

Definition at line 124 of file Triangle.h.

Referenced by axes(), and intersect().

Vec3f Triangle::mEdge2 [protected]

Definition at line 124 of file Triangle.h.

Referenced by axes(), and intersect().

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

• src/Triangle.h

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