Projection Class Reference

#include <Projection.h>

Inheritance diagram for Projection:


Public Member Functions
	Projection (double, double, double, double, double, double)
	Projection (const Projection &)
virtual Projection *	clone () const =0
void	set (const Projection &)
Vector4	project (const Vector4 &) const
Vector3	project (const Vector3 &) const
bool	projectAndClip (const Vector4 &, Vector4 *) const
bool	projectAndClip (const Vector3 &, Vector3 *) const
bool	projectToPlane (const Vector3 &, Vector2 &) const
bool	clip (const Vector4 &) const
bool	clip (const Vector3 &) const
float	getLeftPlane (void) const
float	getRightPlane (void) const
float	getBottomPlane (void) const
float	getTopPlane (void) const
float	getNearPlane (void) const
float	getFarPlane (void) const
float	getPlaneWidth (void) const
float	getPlaneHeight (void) const
void	getProjectionArea (Vector3 &, Vector3 &, Vector3 &, Vector3 &) const
virtual Vector3	getProjectionDirection (const Vector2 &)=0
Protected Member Functions
void	_set_clipping_planes (double, double, double, double, double, double)
Protected Attributes
Matrix4	_projMat
float	_left
float	_right
float	_bottom
float	_top
float	_near
float	_far

Detailed Description

Definition at line 25 of file Projection.h.

Constructor & Destructor Documentation

Projection ( double ,

double ,

double ,

double ,

double ,

double

)

Constructors
, , , = corners of the near projection plane. , = DISTANCES to clipping planes.
Definition at line 23 of file Projection.cc.
References Projection::_projMat, and Projection::_set_clipping_planes().

Projection ( const Projection & )

Definition at line 34 of file Projection.cc.
References Projection::set().

Member Function Documentation

void _set_clipping_planes ( double ,

double ,

double ,

double ,

double ,

double

) [protected]

Definition at line 5 of file Projection.cc.
References Projection::_bottom, Projection::_far, Projection::_left, Projection::_near, Projection::_right, and Projection::_top.
Referenced by Projection::Projection(), and Projection::set().

bool clip ( const Vector3 & ) const

Definition at line 89 of file Projection.cc.
References Projection::_bottom, Projection::_left, Projection::_right, and Projection::_top.

bool clip ( const Vector4 & ) const

Clips 3D point using view volume
= point in space in the coord. system of the projection (e.g. world) = true if projected point is inside the voew frustum, false otherwise
Definition at line 82 of file Projection.cc.
References Projection::_bottom, Projection::_left, and Projection::_top.
Referenced by Projection::projectAndClip().

virtual Projection* clone ( ) const [pure virtual]

Clonning.
copy of source projection
Implemented in OrthoProj, and PerspProj.
Referenced by Camera::Camera().

float getBottomPlane ( void ) const [inline]

Definition at line 121 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), CameraGL::_set_perspective_proj(), Camera::getPixelSize(), Camera::mapPixelToProjPlane(), Camera::project(), Camera::projectAndClip(), and FrameBufferGL::setColor().

float getFarPlane ( void ) const [inline]

Definition at line 124 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), and CameraGL::_set_perspective_proj().

float getLeftPlane ( void ) const [inline]

Returns raw frustum plane values
Definition at line 119 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), CameraGL::_set_perspective_proj(), Camera::getPixelSize(), Camera::mapPixelToProjPlane(), Camera::project(), Camera::projectAndClip(), and FrameBufferGL::setColor().

float getNearPlane ( void ) const [inline]

Definition at line 123 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), and CameraGL::_set_perspective_proj().

float getPlaneHeight ( void ) const [inline]

Definition at line 126 of file Projection.h.
Referenced by FrameBufferGL::setColor().

float getPlaneWidth ( void ) const [inline]

Definition at line 125 of file Projection.h.
Referenced by FrameBufferGL::setColor().

void getProjectionArea ( Vector3 & ,

Vector3 & ,

Vector3 & ,

Vector3 &

) const

Returns corners of the projection area
Definition at line 105 of file Projection.cc.
References Projection::_bottom, Projection::_left, Projection::_near, Projection::_right, and Projection::_top.
Referenced by Camera::getProjectionPlane().

virtual Vector3 getProjectionDirection ( const Vector2 & ) [pure virtual]

Returns projection direction (normalized direction from the center of projection towards the point
= point at the projection plane, [0,0] is lower-left corner = normalized projection direction towards the
Implemented in OrthoProj, and PerspProj.
Referenced by Camera::getProjectionDirection().

float getRightPlane ( void ) const [inline]

Definition at line 120 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), CameraGL::_set_perspective_proj(), Camera::getPixelSize(), and Camera::mapPixelToProjPlane().

float getTopPlane ( void ) const [inline]

Definition at line 122 of file Projection.h.
Referenced by CameraGL::_set_orthogonal_proj(), CameraGL::_set_perspective_proj(), Camera::getPixelSize(), and Camera::mapPixelToProjPlane().

Vector3 project ( const Vector3 & ) const

Definition at line 53 of file Projection.cc.
References Projection::_projMat.

Vector4 project ( const Vector4 & ) const

Projects 3D point using projection matrix (e.g. (0,0,0) projects to the "center" of view volume)
= point in space in the coord. system of camera point in space in the coord. system of frustum
Definition at line 46 of file Projection.cc.
References Projection::_projMat.
Referenced by Camera::project(), and Projection::projectAndClip().

bool projectAndClip ( const Vector3 & ,

Vector3 *

) const

Definition at line 71 of file Projection.cc.
References Projection::clip(), and Projection::project().

bool projectAndClip ( const Vector4 & ,

Vector4 *

) const

Projects and clips 3D point using projection matrix and view volume
= point in space in the coord. system of camera = point in space in the coord. system of frustum = true if projected point is inside the view frustum, false otherwise
Definition at line 60 of file Projection.cc.
References Projection::clip(), and Projection::project().
Referenced by Camera::projectAndClip(), and Projection::projectToPlane().

bool projectToPlane ( const Vector3 & ,

Vector2 &

) const

Projects a 3D point onto the projection plane
= point in space in the coord. system of the camera = computed projection: (0,0) = lower-left corner of projection area, (1,0) = lower-right corner of projection area, (0,1) = upper-left corner of projection area, (1,1) = upper-right corner of projection area, less the 0 or more then 1 => out of projection area = true if is inside view volume, false otherwise
Definition at line 94 of file Projection.cc.
References Projection::_bottom, Projection::_left, Projection::_right, Projection::_top, and Projection::projectAndClip().