Geometry
[Parametrable Object]

The basis class for geometry models. More...

Classes
class	Geometry
class	Camera
	The basis class for camera models. More...
Functions
uint32	Geometry::memory ()
bool	Geometry::is_ok ()
virtual void	Geometry::bbox_get (bbox &bb)=0
virtual void	Geometry::bsphere_get (bsphere &bs)=0
virtual bool	Geometry::intersect (ray &r, float &distance, packed &data)=0
virtual void	Geometry::compute_intersection (ray &r, intersection &inter, packed &data)=0
virtual void	Geometry::surface_sample (const uint32 number, vec3 *vtab, vec3 *ntab)=0

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Detailed Description

The basis class for geometry models.

Geometry describes a geometry representation or primitive like parametric spheres or cones, meshes or others. There are no limitations to the geometry type: if you want to represent a 3D cloud, do this class ;)

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Function Documentation

virtual void Geometry::bbox_get

(

bbox &

bb

)

[pure virtual, inherited]

Evaluates and "returns" the axis aligned bounding box of this object.

Parameters:

bb

the resulting AABB.

virtual void Geometry::bsphere_get

(

bsphere &

bs

)

[pure virtual, inherited]

Evaluates and "returns" the bounding sphere of this object.

Parameters:

bb

the resulting BS.

virtual void Geometry::compute_intersection	(	ray &	r,
		intersection &	inter,
		packed &	data
	)			[pure virtual, inherited]

Computes the full intersection knowing r, inter.plocal and gdata

Parameters:

	r	the used ray,
	inter	the resulting intersection,
	gdata	some information which are coming from intersect.

virtual bool Geometry::intersect	(	ray &	r,
		float &	distance,
		packed &	data
	)			[pure virtual, inherited]

Evaluates an intersection test and compute distance from the ray's origin to this point.

Parameters:

	r	the ray to evaluate,
	distance	the distance from the ray's origin to the intersection point,
	gdata	some place to pack temporaries informations to pass to compute_intersection.

Returns:

true if an intersection is found.

virtual void Geometry::surface_sample	(	const uint32	number,
		vec3 *	vtab,
		vec3 *	ntab
	)			[pure virtual, inherited]

Computes points and normals on the object's surface.

Parameters:

	number	the number of samples to compute,
	vtab	the vertices array,
	ntab	the normals array.

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