DD::Image::Triangle Class Reference

Inherits DD::Image::PolygonPrimitive.

List of all members.

Public Member Functions
const char *	Class () const
	Triangle (int p0=0, int p1=1, int p2=2)
	Triangle (const Triangle &)
Triangle &	operator= (const Triangle &b)
Primitive *	duplicate () const
Vector3	average_center (const PointList *) const
	Returns the xyz center average of the triangle.
bool	IntersectsRay (const Ray &ray, int n, const PointList *pointList, CollisionResult *result) const
	Test for the intersection of this primitive with a given ray.
void	validate (PrimitiveContext *)
unsigned	faces () const
void	draw_wireframe (ViewerContext *, PrimitiveContext *, Primitive *prev_prim=0) const
void	draw_solid (ViewerContext *, PrimitiveContext *, Primitive *prev_prim=0) const
void	draw_solid_face (int n, ViewerContext *, PrimitiveContext *) const
void	draw_primitive_num (ViewerContext *, PrimitiveContext *) const
void	draw_primitive_normal (ViewerContext *, PrimitiveContext *) const
void	print_info () const
PrimitiveType	getPrimitiveType () const
Protected Member Functions
void	copy (const Triangle *)

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Detailed Description

Simple triangle primitive.

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Constructor & Destructor Documentation

Triangle::Triangle	(	int	p0 = 0,
		int	p1 = 1,
		int	p2 = 2
	)

Constructor accepting 3 points.

References DD::Image::Primitive::vertex_.

Referenced by duplicate().

Triangle::Triangle

(

const Triangle &

b

)

Copy constuctor.

References copy().

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Member Function Documentation

void Triangle::copy

(

const Triangle *

b

)

[protected]

Destructive copy.

Referenced by Triangle().

Primitive * Triangle::duplicate

(

)

const [virtual]

Copy this Triangle into a new one, and return a pointer to it. Vertex data is duplicated, point indices are unchanged.

Implements DD::Image::Primitive.

References Triangle().

Vector3 Triangle::average_center

(

const PointList *

points

)

const [virtual]

Returns the xyz center average of the triangle.

Return the primitive's xyz local-space center.

Reimplemented from DD::Image::Primitive.

bool DD::Image::Triangle::IntersectsRay	(	const Ray &	ray,
		int	n,
		const PointList *	pointList,
		CollisionResult *	result
	)		const [inline, virtual]

Test for the intersection of this primitive with a given ray.

If a collision is detected, information is returned in the collision result

Reimplemented from DD::Image::Primitive.

References DD::Image::Primitive::PolyIntersectsRay().

void Triangle::validate

(

PrimitiveContext *

ptx

)

[virtual]

Calculate the surface normal - points out with a ccw winding.

Reimplemented from DD::Image::Primitive.

References DD::Image::Primitive::normal_, and DD::Image::Vector3::normalize().

void Triangle::draw_solid_face	(	int	n,
		ViewerContext *	ctx,
		PrimitiveContext *	ptx
	)		const [virtual]

Draw the single face as a filled triangle.

Reimplemented from DD::Image::Primitive.

References DD::Image::Vector3::array(), and DD::Image::Primitive::vertex_.