Container for properties describing graphic driver clipping planes. It is up to application to create instances of this class and specify its properties. The instances are passed into graphic driver or other facilities that implement clipping features (e.g. selection). Depending on usage context the class can be used to specify: More...

#include <Graphic3d_ClipPlane.hxx>

Inheritance diagram for Graphic3d_ClipPlane:

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Public Types
typedef NCollection_Vec4 < Standard_Real >	Equation

Public Member Functions
	Graphic3d_ClipPlane ()
	Default constructor. Initializes clip plane container with the following properties: More...

	Graphic3d_ClipPlane (const Graphic3d_ClipPlane &theOther)
	Copy constructor. More...

	Graphic3d_ClipPlane (const Equation &theEquation)
	Construct clip plane for the passed equation. By default the plane is on, capping is turned off. More...

	Graphic3d_ClipPlane (const gp_Pln &thePlane)
	Construct clip plane from the passed geometrical definition. By default the plane is on, capping is turned off. More...

void	SetEquation (const gp_Pln &thePlane)
	Set plane equation by its geometrical definition. The equation is specified in "world" coordinate system. More...

void	SetEquation (const Equation &theEquation)
	Set 4-component equation vector for clipping plane. The equation is specified in "world" coordinate system. More...

const Equation &	GetEquation () const
	Get 4-component equation vector for clipping plane. More...

Standard_Boolean	IsOn () const
	Check that the clipping plane is turned on. More...

void	SetOn (const Standard_Boolean theIsOn)
	Change state of the clipping plane. More...

void	SetCapping (const Standard_Boolean theIsOn)
	Change state of capping surface rendering. More...

Standard_Boolean	IsCapping () const
	Check state of capping surface rendering. More...

gp_Pln	ToPlane () const
	Get geometrical definition. The plane is built up from the equation clipping plane equation vector. More...

virtual Handle < Graphic3d_ClipPlane >	Clone () const
	Clone plane. Virtual method to simplify copying procedure if plane class is redefined at application level to add specific fields to it e.g. id, name, etc. More...

void	SetCappingMaterial (const Graphic3d_MaterialAspect &theMat)
	Set material for rendering capping surface. More...

const Graphic3d_MaterialAspect &	CappingMaterial () const

void	SetCappingTexture (const Handle< Graphic3d_TextureMap > &theTexture)
	Set texture to be applied on capping surface. More...

const Handle < Graphic3d_TextureMap > &	CappingTexture () const

void	SetCappingHatch (const Aspect_HatchStyle theStyle)
	Set hatch style (stipple) and turn hatching on. More...

Aspect_HatchStyle	CappingHatch () const

void	SetCappingHatchOn ()
	Turn on hatching. More...

void	SetCappingHatchOff ()
	Turn off hatching. More...

Standard_Boolean	IsHatchOn () const

const TCollection_AsciiString &	GetId () const
	This ID is used for managing associated resources in graphical driver. The clip plane can be assigned within a range of IO which can be displayed in separate OpenGl contexts. For each of the context an associated OpenGl resource for graphical aspects should be created and kept. The resources are stored in graphical driver for each of individual groups of shared context under the clip plane identifier. More...

Handle < Graphic3d_AspectFillArea3d >	CappingAspect () const
	Compute and return capping aspect from the graphical attributes. More...

unsigned int	MCountEquation () const

unsigned int	MCountAspect () const

	DEFINE_STANDARD_RTTI (Graphic3d_ClipPlane)

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 Handle_Standard_Type &	DynamicType () const
	Returns a type information object about this object. More...

Standard_Boolean	IsInstance (const 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 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...

virtual Handle_Standard_Transient	This () const
	Returns a Handle which references this object. Must never be called to objects created in stack. More...

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

Detailed Description

Container for properties describing graphic driver clipping planes. It is up to application to create instances of this class and specify its properties. The instances are passed into graphic driver or other facilities that implement clipping features (e.g. selection). Depending on usage context the class can be used to specify:

Global clipping applied over the whole scene.
Object-level clipping applied for each particular object. The plane equation is specified in "world" coordinate system. Please note that the set of planes can define convex clipping volume. Be aware that number of clip planes supported by OpenGl is implementation dependent: at least 6 planes are available. Thus, take into account number of clipping planes passed for rendering: the object planes plus the view defined ones.

Member Typedef Documentation

typedef NCollection_Vec4<Standard_Real> Graphic3d_ClipPlane::Equation

Constructor & Destructor Documentation

Graphic3d_ClipPlane::Graphic3d_ClipPlane ( )

Default constructor. Initializes clip plane container with the following properties:

Equation (0.0, 0.0, 1.0, 0)
IsOn (True),
IsCapping (False),
Material (Graphic3d_NOM_DEFAULT),
Texture (NULL),
HatchStyle (Aspect_HS_HORIZONTAL),
IsHatchOn (False)

Graphic3d_ClipPlane::Graphic3d_ClipPlane ( const Graphic3d_ClipPlane & theOther )

Copy constructor.

Parameters

theOther [in] the copied plane.

Graphic3d_ClipPlane::Graphic3d_ClipPlane ( const Equation & theEquation )

Construct clip plane for the passed equation. By default the plane is on, capping is turned off.

Parameters

theEquation [in] the plane equation.

Graphic3d_ClipPlane::Graphic3d_ClipPlane ( const gp_Pln & thePlane )

Construct clip plane from the passed geometrical definition. By default the plane is on, capping is turned off.

Parameters

thePlane [in] the plane.

Member Function Documentation

Handle< Graphic3d_AspectFillArea3d > Graphic3d_ClipPlane::CappingAspect ( ) const

Compute and return capping aspect from the graphical attributes.

Returns: capping surface rendering aspect.

Aspect_HatchStyle Graphic3d_ClipPlane::CappingHatch ( ) const

inline

Returns: hatching style.

const Graphic3d_MaterialAspect& Graphic3d_ClipPlane::CappingMaterial ( ) const

inline

Returns: capping material.

const Handle< Graphic3d_TextureMap >& Graphic3d_ClipPlane::CappingTexture ( ) const

inline

Returns: capping texture map.

virtual Handle< Graphic3d_ClipPlane > Graphic3d_ClipPlane::Clone ( ) const

virtual

Clone plane. Virtual method to simplify copying procedure if plane class is redefined at application level to add specific fields to it e.g. id, name, etc.

Returns: new instance of clipping plane with same properties and attributes.

Graphic3d_ClipPlane::DEFINE_STANDARD_RTTI ( Graphic3d_ClipPlane )

const Equation& Graphic3d_ClipPlane::GetEquation ( ) const

inline

Get 4-component equation vector for clipping plane.

Returns: clipping plane equation vector.

const TCollection_AsciiString& Graphic3d_ClipPlane::GetId ( ) const

inline

This ID is used for managing associated resources in graphical driver. The clip plane can be assigned within a range of IO which can be displayed in separate OpenGl contexts. For each of the context an associated OpenGl resource for graphical aspects should be created and kept. The resources are stored in graphical driver for each of individual groups of shared context under the clip plane identifier.

Returns: clip plane resource identifier string.

Standard_Boolean Graphic3d_ClipPlane::IsCapping ( ) const

inline

Check state of capping surface rendering.

Returns: true (turned on) or false depending on the state.

Standard_Boolean Graphic3d_ClipPlane::IsHatchOn ( ) const

inline

Returns: True if hatching mask is turned on.

Standard_Boolean Graphic3d_ClipPlane::IsOn ( ) const

inline

Check that the clipping plane is turned on.

Returns: boolean flag indicating whether the plane is in on or off state.

unsigned int Graphic3d_ClipPlane::MCountAspect ( ) const

inline

Returns: modification counter for aspect.

unsigned int Graphic3d_ClipPlane::MCountEquation ( ) const

inline

Returns: modification counter for equation.

void Graphic3d_ClipPlane::SetCapping ( const Standard_Boolean theIsOn )

Change state of capping surface rendering.

Parameters

theIsOn [in] the flag specifying whether the graphic driver should perform rendering of capping surface produced by this plane. The graphic driver produces this surface for convex graphics by means of stencil-test and multi-pass rendering.

void Graphic3d_ClipPlane::SetCappingHatch ( const Aspect_HatchStyle theStyle )

Set hatch style (stipple) and turn hatching on.

Parameters

theStyle [in] the hatch style.

void Graphic3d_ClipPlane::SetCappingHatchOff ( )

Turn off hatching.

void Graphic3d_ClipPlane::SetCappingHatchOn ( )

Turn on hatching.

void Graphic3d_ClipPlane::SetCappingMaterial ( const Graphic3d_MaterialAspect & theMat )

Set material for rendering capping surface.

Parameters

theMat [in] the material.

void Graphic3d_ClipPlane::SetCappingTexture ( const Handle< Graphic3d_TextureMap > & theTexture )

Set texture to be applied on capping surface.

Parameters

theTexture [in] the texture.

void Graphic3d_ClipPlane::SetEquation ( const gp_Pln & thePlane )

Set plane equation by its geometrical definition. The equation is specified in "world" coordinate system.

Parameters

thePlane [in] the plane.

void Graphic3d_ClipPlane::SetEquation ( const Equation & theEquation )

Set 4-component equation vector for clipping plane. The equation is specified in "world" coordinate system.

Parameters

theEquation [in] the XYZW (or "ABCD") equation vector.

void Graphic3d_ClipPlane::SetOn ( const Standard_Boolean theIsOn )

Change state of the clipping plane.

Parameters

theIsOn [in] the flag specifying whether the graphic driver clipping by this plane should be turned on or off.

gp_Pln Graphic3d_ClipPlane::ToPlane ( ) const

Get geometrical definition. The plane is built up from the equation clipping plane equation vector.

Returns: geometrical definition of clipping plane.

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

Graphic3d_ClipPlane.hxx

Graphic3d_ClipPlane Class Reference

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation