Triangle3D Class Reference

Represents a 3D triangle with support for UV mapping and ray intersection testing. More...

#include <Triangle3D.h>

Collaboration diagram for Triangle3D:

Public Member Functions
	Triangle3D ()
	Default constructor.
	Triangle3D (Vector3D *p1, Vector3D *p2, Vector3D *p3)
	Constructs a triangle with specified vertices.
Vector3D *	Normal ()
	Calculates and returns the normal of the triangle.
bool	DidIntersect (Vector3D ray, Vector3D direction, Vector3D *intersect, Vector3D *color)
	Tests whether a ray intersects with the triangle.
String	ToString ()
	Converts the triangle's data to a string representation.

Public Attributes
Vector3D *	p1
	Pointer to the first vertex of the triangle.
Vector3D *	p2
	Pointer to the second vertex of the triangle.
Vector3D *	p3
	Pointer to the third vertex of the triangle.
const Vector2D *	p1UV
	Pointer to the UV coordinates of the first vertex.
const Vector2D *	p2UV
	Pointer to the UV coordinates of the second vertex.
const Vector2D *	p3UV
	Pointer to the UV coordinates of the third vertex.
Vector3D	edge1
	Edge vector from the first to the second vertex.
Vector3D	edge2
	Edge vector from the first to the third vertex.
Vector3D	normal
	Normal vector of the triangle.
bool	hasUV = false
	Indicates whether the triangle has UV mapping.

Detailed Description

Represents a 3D triangle with support for UV mapping and ray intersection testing.

Definition at line 22 of file Triangle3D.h.

Constructor & Destructor Documentation

Triangle3D() [1/2]

Triangle3D

(

)

Default constructor.

Definition at line 3 of file Triangle3D.cpp.

Triangle3D() [2/2]

Triangle3D	(	Vector3D *	p1,
		Vector3D *	p2,
		Vector3D *	p3
	)

Constructs a triangle with specified vertices.

Parameters

p1	Pointer to the first vertex.
p2	Pointer to the second vertex.
p3	Pointer to the third vertex.

Definition at line 5 of file Triangle3D.cpp.

References Normal(), p1, p2, and p3.

Member Function Documentation

DidIntersect()

bool DidIntersect	(	Vector3D	ray,
		Vector3D	direction,
		Vector3D *	intersect,
		Vector3D *	color
	)

Tests whether a ray intersects with the triangle.

Parameters

ray	The origin of the ray.
direction	The direction of the ray.
intersect	Output parameter for the intersection point.
color	Output parameter for color (optional).

Returns

True if the ray intersects the triangle, otherwise false.

Definition at line 21 of file Triangle3D.cpp.

References Vector3D::CrossProduct(), Vector3D::DotProduct(), edge1, edge2, Vector3D::Multiply(), p1, Vector3D::X, Vector3D::Y, and Vector3D::Z.

Normal()

Vector3D * Normal

(

)

Calculates and returns the normal of the triangle.

Returns

Pointer to the calculated normal vector.

Definition at line 13 of file Triangle3D.cpp.

References Vector3D::CrossProduct(), edge1, edge2, normal, p1, p2, p3, and Vector3D::UnitSphere().

Referenced by ObjectAlign::GetPlaneNormal(), Triangle2D::Triangle2D(), and Triangle3D().

ToString()

String ToString

(

)

Converts the triangle's data to a string representation.

Returns

String representation of the triangle.

Definition at line 58 of file Triangle3D.cpp.

References p1, p2, p3, and Vector3D::ToString().

Member Data Documentation

edge1

Vector3D edge1

Edge vector from the first to the second vertex.

Definition at line 32 of file Triangle3D.h.

Referenced by DidIntersect(), and Normal().

edge2

Vector3D edge2

Edge vector from the first to the third vertex.

Definition at line 33 of file Triangle3D.h.

Referenced by DidIntersect(), and Normal().

hasUV

bool hasUV = false

Indicates whether the triangle has UV mapping.

Definition at line 36 of file Triangle3D.h.

Referenced by Triangle2D::Triangle2D().

normal

Vector3D normal

Normal vector of the triangle.

Definition at line 34 of file Triangle3D.h.

Referenced by Normal().

p1

Vector3D* p1

Pointer to the first vertex of the triangle.

Definition at line 24 of file Triangle3D.h.

Referenced by DidIntersect(), Normal(), ToString(), Triangle2D::Triangle2D(), Triangle2D::Triangle2D(), and Triangle3D().

p1UV

const Vector2D* p1UV

Pointer to the UV coordinates of the first vertex.

Definition at line 28 of file Triangle3D.h.

Referenced by Triangle2D::Triangle2D().

p2

Vector3D* p2

Pointer to the second vertex of the triangle.

Definition at line 25 of file Triangle3D.h.

Referenced by Normal(), ToString(), Triangle2D::Triangle2D(), Triangle2D::Triangle2D(), and Triangle3D().

p2UV

const Vector2D* p2UV

Pointer to the UV coordinates of the second vertex.

Definition at line 29 of file Triangle3D.h.

Referenced by Triangle2D::Triangle2D().

p3

Vector3D* p3

Pointer to the third vertex of the triangle.

Definition at line 26 of file Triangle3D.h.

Referenced by Normal(), ToString(), Triangle2D::Triangle2D(), Triangle2D::Triangle2D(), and Triangle3D().

p3UV

const Vector2D* p3UV

Pointer to the UV coordinates of the third vertex.

Definition at line 30 of file Triangle3D.h.

Referenced by Triangle2D::Triangle2D().

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

• Triangle3D.h
• Triangle3D.cpp