This class is an interface for different types of selecting frustums, defining different selection types, like point, box or polyline selection. It contains signatures of functions for detection of overlap by sensitive entity and initializes some data for building the selecting frustum. More...

#include <SelectMgr_BaseFrustum.hxx>

Inheritance diagram for SelectMgr_BaseFrustum:

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Public Member Functions
	SelectMgr_BaseFrustum ()
	Creates new selecting volume with pixel toletance set to 2, orthographic camera and empty frustum builder. More...

virtual	~SelectMgr_BaseFrustum ()

const Handle< Graphic3d_Camera > &	Camera () const
	Return camera definition. More...

void	SetCamera (const Handle< Graphic3d_Camera > &theCamera)
	Passes camera projection and orientation matrices to builder. More...

void	SetCamera (const Graphic3d_Mat4d &theProjection, const Graphic3d_Mat4d &theWorldView, const Standard_Boolean theIsOrthographic, const Graphic3d_WorldViewProjState &theWVPState=Graphic3d_WorldViewProjState())
	Passes camera projection and orientation matrices to builder. More...

const Graphic3d_Mat4d &	ProjectionMatrix () const

const Graphic3d_Mat4d &	WorldViewMatrix () const

const Graphic3d_WorldViewProjState &	WorldViewProjState () const

void	SetPixelTolerance (const Standard_Integer theTol)

void	SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight)

void	WindowSize (Standard_Integer &theWidth, Standard_Integer &theHeight) const

void	SetViewport (const Standard_Real theX, const Standard_Real theY, const Standard_Real theWidth, const Standard_Real theHeight)
	Passes viewport parameters to builder. More...

void	SetBuilder (const Handle< SelectMgr_FrustumBuilder > &theBuilder)
	Nullifies the builder created in the constructor and copies the pointer given. More...

virtual void	Build (const gp_Pnt2d &)
	Builds volume according to the point and given pixel tolerance. More...

virtual void	Build (const gp_Pnt2d &, const gp_Pnt2d &)
	Builds volume according to the selected rectangle. More...

virtual void	Build (const gp_Pnt2d &, const gp_Pnt2d &, const gp_Pnt2d &)
	Builds volume according to the triangle given. More...

virtual void	Build (const TColgp_Array1OfPnt2d &)
	Builds selecting volumes set according to polyline points. More...

virtual Handle< SelectMgr_BaseFrustum >	ScaleAndTransform (const Standard_Integer, const gp_GTrsf &) const
	IMPORTANT: Scaling makes sense only for frustum built on a single point! Note that this method does not perform any checks on type of the frustum. Returns a copy of the frustum resized according to the scale factor given and transforms it using the matrix given. There are no default parameters, but in case if: More...

virtual Standard_Boolean	Overlaps (const SelectMgr_Vec3 &theBoxMin, const SelectMgr_Vec3 &theBoxMax, Standard_Real &theDepth)
	SAT intersection test between defined volume and given axis-aligned box. More...

virtual Standard_Boolean	Overlaps (const SelectMgr_Vec3 &theBoxMin, const SelectMgr_Vec3 &theBoxMax, Standard_Boolean *theInside=NULL)
	Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt. More...

virtual Standard_Boolean	Overlaps (const gp_Pnt &thePnt, Standard_Real &theDepth)
	Intersection test between defined volume and given point. More...

virtual Standard_Boolean	Overlaps (const gp_Pnt &thePnt)
	Intersection test between defined volume and given point Does not perform depth calculation, so this method is defined as helper function for inclusion test. Therefore, its implementation makes sense only for rectangular frustum with box selection mode activated. More...

virtual Standard_Boolean	Overlaps (const TColgp_Array1OfPnt &theArrayOfPnts, Select3D_TypeOfSensitivity theSensType, Standard_Real &theDepth)
	SAT intersection test between defined volume and given ordered set of points, representing line segments. The test may be considered of interior part or boundary line defined by segments depending on given sensitivity type. More...

virtual Standard_Boolean	Overlaps (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, Standard_Real &theDepth)
	Checks if line segment overlaps selecting frustum. More...

virtual Standard_Boolean	Overlaps (const gp_Pnt &thePt1, const gp_Pnt &thePt2, const gp_Pnt &thePt3, Select3D_TypeOfSensitivity theSensType, Standard_Real &theDepth)
	SAT intersection test between defined volume and given triangle. The test may be considered of interior part or boundary line defined by triangle vertices depending on given sensitivity type. More...

virtual Standard_Real	DistToGeometryCenter (const gp_Pnt &theCOG)
	Measures distance between 3d projection of user-picked screen point and given point theCOG. More...

virtual gp_Pnt	DetectedPoint (const Standard_Real theDepth) const

virtual Standard_Boolean	IsClipped (const Graphic3d_SequenceOfHClipPlane &thePlanes, const Standard_Real theDepth)
	Checks if the point of sensitive in which selection was detected belongs to the region defined by clipping planes. More...

virtual void	SetViewClipping (const Handle< Graphic3d_SequenceOfHClipPlane > &)
	Valid for point selection only! Computes depth range for global (defined for the whole view) clipping planes. More...

virtual Standard_Boolean	SetViewClippingEnabled (const Standard_Boolean)
	Set if view clipping plane is enabled or not. More...

virtual void	GetPlanes (NCollection_Vector< SelectMgr_Vec4 > &thePlaneEquations) const
	Stores plane equation coefficients (in the following form: Ax + By + Cz + D = 0) to the given vector. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	Delete () const
	Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object. More...

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

void	IncrementRefCounter () const
	Increments the reference counter of this object. More...

Standard_Integer	DecrementRefCounter () const
	Decrements the reference counter of this object; returns the decremented value. More...

Protected Attributes
Standard_Integer	myPixelTolerance
	Pixel tolerance. More...

Standard_Boolean	myIsOrthographic
	Defines if current camera is orthographic. More...

Handle< SelectMgr_FrustumBuilder >	myBuilder
	A tool implementing methods for volume build. More...

Handle< Graphic3d_Camera >	myCamera
	camera definition More...

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object. More...

Static Public Member Functions inherited from Standard_Transient
static const char *	get_type_name ()
	Returns a type descriptor about this object. More...

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class. More...

Detailed Description

This class is an interface for different types of selecting frustums, defining different selection types, like point, box or polyline selection. It contains signatures of functions for detection of overlap by sensitive entity and initializes some data for building the selecting frustum.

Constructor & Destructor Documentation

SelectMgr_BaseFrustum::SelectMgr_BaseFrustum ( )

Creates new selecting volume with pixel toletance set to 2, orthographic camera and empty frustum builder.

virtual SelectMgr_BaseFrustum::~SelectMgr_BaseFrustum ( )

inlinevirtual

Member Function Documentation

virtual void SelectMgr_BaseFrustum::Build ( const gp_Pnt2d & )

inlinevirtual

Builds volume according to the point and given pixel tolerance.

Reimplemented in SelectMgr_RectangularFrustum.

virtual void SelectMgr_BaseFrustum::Build	(	const gp_Pnt2d &	,
		const gp_Pnt2d &
	)

inlinevirtual

Builds volume according to the selected rectangle.

Reimplemented in SelectMgr_RectangularFrustum.

virtual void SelectMgr_BaseFrustum::Build	(	const gp_Pnt2d &	,
		const gp_Pnt2d &	,
		const gp_Pnt2d &
	)

inlinevirtual

Builds volume according to the triangle given.

Reimplemented in SelectMgr_TriangularFrustum.

virtual void SelectMgr_BaseFrustum::Build ( const TColgp_Array1OfPnt2d & )

inlinevirtual

Builds selecting volumes set according to polyline points.

Reimplemented in SelectMgr_TriangularFrustumSet.

const Handle< Graphic3d_Camera >& SelectMgr_BaseFrustum::Camera ( ) const

inline

Return camera definition.

virtual gp_Pnt SelectMgr_BaseFrustum::DetectedPoint ( const Standard_Real theDepth ) const

virtual

Reimplemented in SelectMgr_RectangularFrustum.

virtual Standard_Real SelectMgr_BaseFrustum::DistToGeometryCenter ( const gp_Pnt & theCOG )

virtual

Measures distance between 3d projection of user-picked screen point and given point theCOG.

Reimplemented in SelectMgr_RectangularFrustum.

virtual void SelectMgr_BaseFrustum::GetPlanes ( NCollection_Vector< SelectMgr_Vec4 > & thePlaneEquations ) const

inlinevirtual

Stores plane equation coefficients (in the following form: Ax + By + Cz + D = 0) to the given vector.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustum, and SelectMgr_TriangularFrustumSet.

virtual Standard_Boolean SelectMgr_BaseFrustum::IsClipped	(	const Graphic3d_SequenceOfHClipPlane &	thePlanes,
		const Standard_Real	theDepth
	)

virtual

Checks if the point of sensitive in which selection was detected belongs to the region defined by clipping planes.

Reimplemented in SelectMgr_RectangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const SelectMgr_Vec3 &	theBoxMin,
		const SelectMgr_Vec3 &	theBoxMax,
		Standard_Real &	theDepth
	)

virtual

SAT intersection test between defined volume and given axis-aligned box.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustumSet, and SelectMgr_TriangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const SelectMgr_Vec3 &	theBoxMin,
		const SelectMgr_Vec3 &	theBoxMax,
		Standard_Boolean *	theInside = `NULL`
	)

virtual

Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustumSet, and SelectMgr_TriangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const gp_Pnt &	thePnt,
		Standard_Real &	theDepth
	)

virtual

Intersection test between defined volume and given point.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustumSet, and SelectMgr_TriangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps ( const gp_Pnt & thePnt )

virtual

Intersection test between defined volume and given point Does not perform depth calculation, so this method is defined as helper function for inclusion test. Therefore, its implementation makes sense only for rectangular frustum with box selection mode activated.

Reimplemented in SelectMgr_RectangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const TColgp_Array1OfPnt &	theArrayOfPnts,
		Select3D_TypeOfSensitivity	theSensType,
		Standard_Real &	theDepth
	)

virtual

SAT intersection test between defined volume and given ordered set of points, representing line segments. The test may be considered of interior part or boundary line defined by segments depending on given sensitivity type.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustum, and SelectMgr_TriangularFrustumSet.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const gp_Pnt &	thePnt1,
		const gp_Pnt &	thePnt2,
		Standard_Real &	theDepth
	)

virtual

Checks if line segment overlaps selecting frustum.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustum, and SelectMgr_TriangularFrustumSet.

virtual Standard_Boolean SelectMgr_BaseFrustum::Overlaps	(	const gp_Pnt &	thePt1,
		const gp_Pnt &	thePt2,
		const gp_Pnt &	thePt3,
		Select3D_TypeOfSensitivity	theSensType,
		Standard_Real &	theDepth
	)

virtual

SAT intersection test between defined volume and given triangle. The test may be considered of interior part or boundary line defined by triangle vertices depending on given sensitivity type.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustum, and SelectMgr_TriangularFrustumSet.

const Graphic3d_Mat4d& SelectMgr_BaseFrustum::ProjectionMatrix ( ) const

Returns: current camera projection transformation common for all selecting volumes

virtual Handle< SelectMgr_BaseFrustum > SelectMgr_BaseFrustum::ScaleAndTransform	(	const Standard_Integer	,
		const gp_GTrsf &
	)		const

inlinevirtual

IMPORTANT: Scaling makes sense only for frustum built on a single point! Note that this method does not perform any checks on type of the frustum. Returns a copy of the frustum resized according to the scale factor given and transforms it using the matrix given. There are no default parameters, but in case if:

transformation only is needed: must be initialized as any negative value;
scale only is needed: must be set to gp_Identity.

Reimplemented in SelectMgr_RectangularFrustum, SelectMgr_TriangularFrustumSet, and SelectMgr_TriangularFrustum.

void SelectMgr_BaseFrustum::SetBuilder ( const Handle< SelectMgr_FrustumBuilder > & theBuilder )

Nullifies the builder created in the constructor and copies the pointer given.

void SelectMgr_BaseFrustum::SetCamera ( const Handle< Graphic3d_Camera > & theCamera )

Passes camera projection and orientation matrices to builder.

void SelectMgr_BaseFrustum::SetCamera	(	const Graphic3d_Mat4d &	theProjection,
		const Graphic3d_Mat4d &	theWorldView,
		const Standard_Boolean	theIsOrthographic,
		const Graphic3d_WorldViewProjState &	theWVPState = `Graphic3d_WorldViewProjState()`
	)

Passes camera projection and orientation matrices to builder.

void SelectMgr_BaseFrustum::SetPixelTolerance ( const Standard_Integer theTol )

virtual void SelectMgr_BaseFrustum::SetViewClipping ( const Handle< Graphic3d_SequenceOfHClipPlane > & )

inlinevirtual

Valid for point selection only! Computes depth range for global (defined for the whole view) clipping planes.

Reimplemented in SelectMgr_RectangularFrustum.

virtual Standard_Boolean SelectMgr_BaseFrustum::SetViewClippingEnabled ( const Standard_Boolean )

inlinevirtual

Set if view clipping plane is enabled or not.

Returns: previous value of the flag

Reimplemented in SelectMgr_RectangularFrustum.

void SelectMgr_BaseFrustum::SetViewport	(	const Standard_Real	theX,
		const Standard_Real	theY,
		const Standard_Real	theWidth,
		const Standard_Real	theHeight
	)

Passes viewport parameters to builder.

void SelectMgr_BaseFrustum::SetWindowSize	(	const Standard_Integer	theWidth,
		const Standard_Integer	theHeight
	)

void SelectMgr_BaseFrustum::WindowSize	(	Standard_Integer &	theWidth,
		Standard_Integer &	theHeight
	)		const

const Graphic3d_Mat4d& SelectMgr_BaseFrustum::WorldViewMatrix ( ) const

Returns: current camera world view transformation common for all selecting volumes

const Graphic3d_WorldViewProjState& SelectMgr_BaseFrustum::WorldViewProjState ( ) const

Returns: current camera world view projection transformation state

Field Documentation

Handle< SelectMgr_FrustumBuilder > SelectMgr_BaseFrustum::myBuilder

protected

A tool implementing methods for volume build.

Handle< Graphic3d_Camera > SelectMgr_BaseFrustum::myCamera

protected

camera definition

Standard_Boolean SelectMgr_BaseFrustum::myIsOrthographic

protected

Defines if current camera is orthographic.

Standard_Integer SelectMgr_BaseFrustum::myPixelTolerance

protected

Pixel tolerance.

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

SelectMgr_BaseFrustum.hxx

SelectMgr_BaseFrustum Class Reference

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation