esg::Point3D

Point3D Class Reference

#include <Point3D.h>

Inheritance diagram for Point3D:


Public Member Functions
	Point3D ()
	Point3D (const Vector3 &v)
	Point3D (float x, float y, float z)
	Point3D (double x, double y, double z)
virtual	~Point3D ()
virtual void	rayIntersection (PointEnv *pPE, int mask, const Vector3 &origin, const Vector3 &direction, float maxD=MAXFLOAT)
virtual bool	mapToUV (const Vector3 &v, Vector2 &uv)
virtual void	randomSample (int mask, PointEnv &pe, double *pdf)
virtual bool	randomDirection (const Vector3 &pov, Vector3 &dir, double *pdf)
virtual Interval	extent (const Vector3 &direction) const
virtual Vector3	centroid (void) const
virtual double	radius (void) const
virtual double	radius (const Vector3 &centroid) const
virtual Geometry *	clone (const Matrix4 *pTrMat) const
virtual bool	separation (Geometry &geom, Vector3 *pDir)
virtual double	distance (const Geometry &geom, Vector3 *pDir)
virtual void	dump (const char intent, const char tab)
void	setPosition (const Vector3 &p)
void	setPosition (float x, float y, float z)
Vector3	getPosition () const
void	insideOut (bool b)
Interval	extent (float x, float y, float z) const
Geometry *	clone (void) const
Mesh *	mesh (int density=0) const
virtual void	__debug ()
Static Public Attributes
static const float	EPS = 1e-03
	epsilon variation (tolerance) of zero
Protected Member Functions
virtual Mesh *	_mesh (int) const
virtual void	_duplicate_attributes (const Geometry &)
virtual void	_rotateX (float)
virtual void	_rotateY (float)
virtual void	_rotateZ (float)
virtual void	_rotate (float, const Vector3 &)
virtual void	_rotate (const Matrix3 &)
virtual void	_translate (float, float, float)
virtual void	_transform (const Matrix4 &)
virtual void	_scale (float)
void	_translate (const Vector3 &v)
Protected Attributes
Vector3	_position
	point position in space
bool	_insideOut

Detailed Description

Simple geometry for point in 3D space.

Definition at line 16 of file Point3D.h.

Constructor & Destructor Documentation

Point3D ( )

Contructor for point located at (0,0,0)
Definition at line 61 of file Point3D.cc.
References Point3D::_position.
Referenced by Point3D::clone().

Point3D ( const Vector3 & v )

Contructor.

Parameters:

v point's location

Definition at line 66 of file Point3D.cc.
References Point3D::_position.

Point3D ( float x,

float y,

float z

)

Contructor.

Parameters:

x x coordinate of point's location

y y coordinate of point's location

z z coordinate of point's location

Definition at line 71 of file Point3D.cc.
References Point3D::_position.

Point3D ( double x,

double y,

double z

)

Contructor.

Parameters:

x x coordinate of point's location

y y coordinate of point's location

z z coordinate of point's location

Definition at line 76 of file Point3D.cc.
References Point3D::_position.

virtual ~Point3D ( ) [inline, virtual]

Destructor.
Definition at line 66 of file Point3D.h.

Member Function Documentation

virtual void __debug ( void ) [inline, virtual, inherited]

Reimplemented in _Surface, FDH, Polygon, Sphere, and Surface.
Definition at line 211 of file Geometry.h.
Referenced by BVH::__debug().

void _duplicate_attributes ( const Geometry & ) [protected, virtual]

Reimplemented from Geometry.
Definition at line 5 of file Point3D.cc.
References Point3D::_position.
Referenced by Point3D::clone(), and Point2D::clone().

virtual Mesh* _mesh ( int ) const [inline, protected, virtual]

Implements Geometry.
Definition at line 21 of file Point3D.h.

void _rotate ( const Matrix3 & ) [protected, virtual]

Implements Geometry.
Definition at line 38 of file Point3D.cc.
References Point3D::_position.

void _rotate ( float ,

const Vector3 &

) [protected, virtual]

Implements Geometry.
Definition at line 31 of file Point3D.cc.
References Point3D::_position.

void _rotateX ( float ) [protected, virtual]

Implements Geometry.
Reimplemented in Point2D.
Definition at line 10 of file Point3D.cc.
References Point3D::_position.

void _rotateY ( float ) [protected, virtual]

Implements Geometry.
Reimplemented in Point2D.
Definition at line 17 of file Point3D.cc.
References Point3D::_position.

void _rotateZ ( float ) [protected, virtual]

Implements Geometry.
Definition at line 24 of file Point3D.cc.
References Point3D::_position.

void _scale ( float ) [protected, virtual]

Implements Geometry.
Definition at line 53 of file Point3D.cc.
References Point3D::_position.

void _transform ( const Matrix4 & ) [protected, virtual]

Implements Geometry.
Definition at line 48 of file Point3D.cc.
References Point3D::_position.
Referenced by Point3D::clone(), and Point2D::clone().

void _translate ( const Vector3 & v ) [inline, protected, inherited]

Definition at line 38 of file Geometry.h.

void _translate ( float ,

float ,

float

) [protected, virtual]

Implements Geometry.
Reimplemented in Point2D.
Definition at line 43 of file Point3D.cc.
References Point3D::_position.

Vertex3 centroid ( void ) const [virtual]

Returns:
centroid (point of gravity) of the geometry

Implements Geometry.
Definition at line 161 of file Point3D.cc.
References Point3D::_position.

Geometry* clone ( void ) const [inline, inherited]

Duplicates geometry

Returns:
duplicate (clone)

Reimplemented in _Surface, and OSGPolygon.
Definition at line 155 of file Geometry.h.
Referenced by BVH::__get_edges(), BVH::__get_meshes(), ObjsInAreaExplorer::_accept_new_transformation(), SphereTree::_enlarge_bv(), FDHTree::_enlarge_bv(), BVExplorer::_iterate(), BVDistRot::BVDistRot(), and ObjsInAreaExplorer::ObjsInAreaExplorer().

Geometry * clone ( const Matrix4 * pTrMat ) const [virtual]

Duplicates and transforms geometry

Parameters:

pTrMat transformation matrix of the clone or NULL

Returns:
duplicate (clone)

Implements Geometry.
Reimplemented in Point2D.
Definition at line 153 of file Point3D.cc.
References Point3D::_duplicate_attributes(), Point3D::_transform(), and Point3D::Point3D().

double distance ( const Geometry & geom,

Vector3 * pDir

) [virtual]

Computes approximate distance between this and given geometries (lower bound of distance)

Parameters:

geom geometry to check

pDir if presented then is set to normalized measured direction (vector of minimal distance)

Returns:
lower bound of distance, negative value indicates penetration, positive value indicates separation, zero indicates touch

Implements Geometry.
Definition at line 189 of file Point3D.cc.
References Point3D::_position, Geometry::centroid(), Geometry::extent(), Interval::max, and Interval::min.

void dump ( const char * intent,

const char * tab

) [virtual]

Writes information about this geometry to std. out.

Parameters:

intent free space before each line

tab free space added to intent inside description of this class

Implements Geometry.
Definition at line 204 of file Point3D.cc.
References Point3D::_position.

Interval extent ( float x,

float y,

float z

) const [inline, inherited]

Returns extent occupied by the geometry in given direction

Parameters:

x direction direction of extent - x coordinate

y direction direction of extent - y coordinate

z direction direction of extent - z coordinate

Returns:
extent of occupied space

Definition at line 124 of file Geometry.h.

Interval extent ( const Vector3 & direction ) const [virtual]

Returns extent occupied by the geometry in given direction

Parameters:

direction direction of extent

Returns:
extent of occupied space

Implements Geometry.
Definition at line 145 of file Point3D.cc.
References Point3D::_position, Interval::max, and Interval::min.

Vector3 getPosition ( ) const [inline]

Returns:
position in space

Definition at line 117 of file Point3D.h.

void insideOut ( bool b ) [inline, inherited]

Inverts facet normals (turns the object inside-out)

Parameters:

b determines wehether to turn the geometry inside-out

Definition at line 56 of file Geometry.h.

bool mapToUV ( const Vector3 & v,

Vector2 & uv

) [virtual]

Maps 3D point from surface to the UV surface representation

Parameters:

v 3D point in the world coordinates

uv UV coordinates (relative to the surface)

Returns:
true on success, false otherwise (mainly if the 3D point does not lie on the surface)

Implements Geometry.
Definition at line 111 of file Point3D.cc.

Mesh * mesh ( int density = 0 ) const [inherited]

Returns polygonal mesh computed from this geometry

Parameters:

density mesh density

Returns:
polygonal mesh

Definition at line 24 of file Geometry.cc.
References Geometry::_insideOut, Geometry::_mesh(), and Mesh::turnInsideOut().
Referenced by BVH::__get_edges(), BVH::__get_meshes(), NurbsSurface::_mesh(), and POVRayExporter::_process_leaf().

double radius ( const Vector3 & centroid ) const [virtual]

Returns radius of minimal packing sphere having given center

Parameters:

centroid center of packing sphere

Returns:
minimal packing radius

Implements Geometry.
Definition at line 171 of file Point3D.cc.
References Point3D::_position.

double radius ( void ) const [virtual]

Returns radius of minimal packing sphere with center in the ceontroid of the geometry

Parameters:

centroid center of packing sphere

Returns:
minimal packing radius

Reimplemented from Geometry.
Definition at line 166 of file Point3D.cc.

bool randomDirection ( const Vector3 & pov,

Vector3 & dir,

double * pdf

) [virtual]

Computes random direction towards the surface in accord to the point of view.

Parameters:

pov point of view

dir computed random direction

pdf if present then it is set to the value of the Probability Density Function of the random point

Implements Geometry.
Definition at line 133 of file Point3D.cc.
References Point3D::_position.

void randomSample ( int mask,

PointEnv & pe,

double * pdf

) [virtual]

Computes random point on the surface

Parameters:

mask bitmask determining what to compute, see PointEnv.h

pe information about the computed random point on surface

pdf if present then it is set to the value of the Probability Density Function of the random point

Implements Geometry.
Definition at line 116 of file Point3D.cc.
References Point3D::_position, ENV_HAVE_NOTHING, ENV_HAVE_SURFACE_POINT, ENV_HAVE_UV_COORD, ENV_WANT_SURFACE_POINT, ENV_WANT_UV_COORD, PointEnv::intersection, PointEnv::mask, and PointEnv::uvCoord.

void rayIntersection ( PointEnv * pPE,

int mask,

const Vector3 & origin,

const Vector3 & direction,

float maxD = MAXFLOAT

) [virtual]

Computes point of intersection of ray with this geometry

Parameters:

pPE structure in which the information about intersection point is stored; must be defined (not NULL)

mask bitmask determining what to compute, see PointEnv.h

origin ray's origin

direction normalized ray's direction

maxD maximal interesting distance; if the point of intersection can't be closer than this distance then the computation stops (object is too far away)

Implements Geometry.
Definition at line 81 of file Point3D.cc.
References Point3D::_position, PointEnv::distance, ENV_HAVE_DISTANCE, ENV_HAVE_INTERFERENCE, ENV_HAVE_INTERSECTION, ENV_HAVE_NOTHING, ENV_HAVE_UV_COORD, ENV_WANT_DISTANCE, ENV_WANT_INTERSECTION, ENV_WANT_UV_COORD, Geometry::EPS, PointEnv::intersection, PointEnv::mask, MAXFLOAT, and PointEnv::uvCoord.

bool separation ( Geometry & geom,

Vector3 * pDir

) [virtual]

Checks if there is separation between this and given geometries

Parameters:

geom geometry to check

pDir if presented then is set to normalized direction to found separation (gap)

Returns:
true if thre is separation (gap), false otherwise

Implements Geometry.
Definition at line 176 of file Point3D.cc.
References Point3D::_position, Geometry::centroid(), Geometry::extent(), and Interval::max.

void setPosition ( float x,

float y,

float z

) [inline]

Parameters:

x new x position

y new y position

z new z position

Definition at line 110 of file Point3D.h.

void setPosition ( const Vector3 & p ) [inline]

Parameters:

p new position

Definition at line 101 of file Point3D.h.
Referenced by Point2D::setPosition().

Member Data Documentation

bool _insideOut [protected, inherited]

Definition at line 23 of file Geometry.h.
Referenced by Geometry::_duplicate_attributes(), and Geometry::mesh().

Vector3 _position [protected]

point position in space

Definition at line 18 of file Point3D.h.
Referenced by Point3D::_duplicate_attributes(), Point3D::_rotate(), Point3D::_rotateX(), Point3D::_rotateY(), Point3D::_rotateZ(), Point3D::_scale(), Point3D::_transform(), Point3D::_translate(), Point3D::centroid(), Point3D::distance(), Point3D::dump(), Point3D::extent(), Point3D::Point3D(), Point3D::radius(), Point3D::randomDirection(), Point3D::randomSample(), Point3D::rayIntersection(), and Point3D::separation().

const float EPS = 1e-03 [static, inherited]

epsilon variation (tolerance) of zero

Definition at line 20 of file Geometry.h.
Referenced by FDH::_cut_line(), Sphere::_duplicate_attributes(), FDH::_get_corners(), FDH::_mesh(), Sphere::_scale(), Polygon::_triTriCollision(), Sphere::rayIntersection(), Polygon::rayIntersection(), Point3D::rayIntersection(), Hemisphere::rayIntersection(), Sphere::setRadius(), and Sphere::Sphere().

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

esg/include/esg/geometry/Point3D.h
esg/src/Point3D.cc

Generated on Wed Jun 28 12:24:34 2006 for esg by

1.4.6

Point3D Class Reference

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation