DD::Image::Triangle Class Reference

Inherits DD::Image::Primitive.

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
virtual Vector3	average_center_and_bounds (const PointList *points, Vector3 &min, Vector3 &max) const
bool	IntersectsRay (const Ray &ray, GeoInfo *geo, CollisionResult *result) const
void	validate (PrimitiveContext *)
void	tessellate (Scene *, PrimitiveContext *) const
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.

Vector3 Triangle::average_center_and_bounds	(	const PointList *	points,
		Vector3 &	min,
		Vector3 &	max
	)			const [virtual]

Returns the xyz center average of the primitive, plus local space bounds.

Reimplemented from DD::Image::Primitive.

References DD::Image::Vector3::x, DD::Image::Vector3::y, and DD::Image::Vector3::z.

bool Triangle::IntersectsRay	(	const Ray &	ray,
		GeoInfo *	geo,
		CollisionResult *	result
	)			const [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::normal_, DD::Image::GeoInfo::point_array(), DD::Image::Vector3::x, DD::Image::Vector3::y, and DD::Image::Vector3::z.

void Triangle::validate

(

PrimitiveContext *

ptx

)

[virtual]

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

Reimplemented from DD::Image::Primitive.

References DD::Image::PrimitiveContext::geoinfo(), DD::Image::Primitive::normal_, DD::Image::Vector3::normalize(), DD::Image::GeoInfo::point_array(), and DD::Image::GeoInfo::points().

void Triangle::tessellate	(	Scene *	scene,
		PrimitiveContext *	ptx
	)			const [virtual]

Push a single rTriangle primitive into the rendering stream.

Implements DD::Image::Primitive.

References DD::Image::Scene::add_render_primitive(), DD::Image::PrimitiveContext::geoinfo(), DD::Image::rTriangle::v, and DD::Image::Primitive::vertex_shader().

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(), DD::Image::PrimitiveContext::geoinfo(), DD::Image::GeoInfo::point_array(), and DD::Image::Primitive::vertex_.