Open CASCADE Technology  7.3.1.dev
Public Member Functions
HLRAlgo_Projector Class Reference

Implements a projector object. To transform and project Points and Planes. This object is designed to be used in the removal of hidden lines and is returned by the Prs3d_Projector::Projector function. You define the projection of the selected shape by calling one of the following functions: More...

#include <HLRAlgo_Projector.hxx>

Public Member Functions

 HLRAlgo_Projector ()
 
 HLRAlgo_Projector (const gp_Ax2 &CS)
 Creates an axonometric projector. <CS> is the viewing coordinate system. More...
 
 HLRAlgo_Projector (const gp_Ax2 &CS, const Standard_Real Focus)
 Creates a perspective projector. <CS> is the viewing coordinate system. More...
 
 HLRAlgo_Projector (const gp_Trsf &T, const Standard_Boolean Persp, const Standard_Real Focus)
 build a Projector with automatic minmax directions. More...
 
 HLRAlgo_Projector (const gp_Trsf &T, const Standard_Boolean Persp, const Standard_Real Focus, const gp_Vec2d &v1, const gp_Vec2d &v2, const gp_Vec2d &v3)
 build a Projector with given minmax directions. More...
 
void Set (const gp_Trsf &T, const Standard_Boolean Persp, const Standard_Real Focus)
 
void Directions (gp_Vec2d &D1, gp_Vec2d &D2, gp_Vec2d &D3) const
 
void Scaled (const Standard_Boolean On=Standard_False)
 to compute with the given scale and translation. More...
 
Standard_Boolean Perspective () const
 Returns True if there is a perspective transformation. More...
 
const gp_TrsfTransformation () const
 Returns the active transformation. More...
 
const gp_TrsfInvertedTransformation () const
 Returns the active inverted transformation. More...
 
const gp_TrsfFullTransformation () const
 Returns the original transformation. More...
 
Standard_Real Focus () const
 Returns the focal length. More...
 
void Transform (gp_Vec &D) const
 
void Transform (gp_Pnt &Pnt) const
 
void Project (const gp_Pnt &P, gp_Pnt2d &Pout) const
 Transform and apply perspective if needed. More...
 
void Project (const gp_Pnt &P, Standard_Real &X, Standard_Real &Y, Standard_Real &Z) const
 Transform and apply perspective if needed. More...
 
void Project (const gp_Pnt &P, const gp_Vec &D1, gp_Pnt2d &Pout, gp_Vec2d &D1out) const
 Transform and apply perspective if needed. More...
 
gp_Lin Shoot (const Standard_Real X, const Standard_Real Y) const
 return a line going through the eye towards the 2d point <X,Y>. More...
 

Detailed Description

Implements a projector object. To transform and project Points and Planes. This object is designed to be used in the removal of hidden lines and is returned by the Prs3d_Projector::Projector function. You define the projection of the selected shape by calling one of the following functions:

Constructor & Destructor Documentation

◆ HLRAlgo_Projector() [1/5]

HLRAlgo_Projector::HLRAlgo_Projector ( )

◆ HLRAlgo_Projector() [2/5]

HLRAlgo_Projector::HLRAlgo_Projector ( const gp_Ax2 CS)

Creates an axonometric projector. <CS> is the viewing coordinate system.

◆ HLRAlgo_Projector() [3/5]

HLRAlgo_Projector::HLRAlgo_Projector ( const gp_Ax2 CS,
const Standard_Real  Focus 
)

Creates a perspective projector. <CS> is the viewing coordinate system.

◆ HLRAlgo_Projector() [4/5]

HLRAlgo_Projector::HLRAlgo_Projector ( const gp_Trsf T,
const Standard_Boolean  Persp,
const Standard_Real  Focus 
)

build a Projector with automatic minmax directions.

◆ HLRAlgo_Projector() [5/5]

HLRAlgo_Projector::HLRAlgo_Projector ( const gp_Trsf T,
const Standard_Boolean  Persp,
const Standard_Real  Focus,
const gp_Vec2d v1,
const gp_Vec2d v2,
const gp_Vec2d v3 
)

build a Projector with given minmax directions.

Member Function Documentation

◆ Directions()

void HLRAlgo_Projector::Directions ( gp_Vec2d D1,
gp_Vec2d D2,
gp_Vec2d D3 
) const

◆ Focus()

Standard_Real HLRAlgo_Projector::Focus ( ) const

Returns the focal length.

◆ FullTransformation()

const gp_Trsf& HLRAlgo_Projector::FullTransformation ( ) const

Returns the original transformation.

◆ InvertedTransformation()

const gp_Trsf& HLRAlgo_Projector::InvertedTransformation ( ) const

Returns the active inverted transformation.

◆ Perspective()

Standard_Boolean HLRAlgo_Projector::Perspective ( ) const

Returns True if there is a perspective transformation.

◆ Project() [1/3]

void HLRAlgo_Projector::Project ( const gp_Pnt P,
gp_Pnt2d Pout 
) const

Transform and apply perspective if needed.

◆ Project() [2/3]

void HLRAlgo_Projector::Project ( const gp_Pnt P,
Standard_Real X,
Standard_Real Y,
Standard_Real Z 
) const

Transform and apply perspective if needed.

◆ Project() [3/3]

void HLRAlgo_Projector::Project ( const gp_Pnt P,
const gp_Vec D1,
gp_Pnt2d Pout,
gp_Vec2d D1out 
) const

Transform and apply perspective if needed.

◆ Scaled()

void HLRAlgo_Projector::Scaled ( const Standard_Boolean  On = Standard_False)

to compute with the given scale and translation.

◆ Set()

void HLRAlgo_Projector::Set ( const gp_Trsf T,
const Standard_Boolean  Persp,
const Standard_Real  Focus 
)

◆ Shoot()

gp_Lin HLRAlgo_Projector::Shoot ( const Standard_Real  X,
const Standard_Real  Y 
) const

return a line going through the eye towards the 2d point <X,Y>.

◆ Transform() [1/2]

void HLRAlgo_Projector::Transform ( gp_Vec D) const

◆ Transform() [2/2]

void HLRAlgo_Projector::Transform ( gp_Pnt Pnt) const

◆ Transformation()

const gp_Trsf& HLRAlgo_Projector::Transformation ( ) const

Returns the active transformation.


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