SelectMgr_FrustumBuilder Class Reference
The purpose of this class is to provide unified interface for building selecting frustum depending on current camera projection and orientation matrices, window size and viewport parameters. More...
#include <SelectMgr_FrustumBuilder.hxx>
Inheritance diagram for SelectMgr_FrustumBuilder:
Public Member Functions | |
| SelectMgr_FrustumBuilder () | |
| Creates new frustum builder with empty matrices. | |
| const Handle< Graphic3d_Camera > & | Camera () const |
| Returns current camera. | |
| void | SetCamera (const Handle< Graphic3d_Camera > &theCamera) |
| Stores current camera. | |
| void | SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight) |
| Stores current window width and height. | |
| void | SetViewport (const Standard_Real theX, const Standard_Real theY, const Standard_Real theWidth, const Standard_Real theHeight) |
| Stores current viewport coordinates. | |
| void | InvalidateViewport () |
| void | WindowSize (Standard_Integer &theWidth, Standard_Integer &theHeight) const |
| Standard_Real | SignedPlanePntDist (const SelectMgr_Vec3 &theEq, const SelectMgr_Vec3 &thePnt) const |
| Calculates signed distance between plane with equation theEq and point thePnt. | |
| gp_Pnt | ProjectPntOnViewPlane (const Standard_Real &theX, const Standard_Real &theY, const Standard_Real &theZ) const |
| Projects 2d screen point onto view frustum plane: theZ = 0 - near plane, theZ = 1 - far plane. | |
 Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. | |
| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| Returns a type descriptor about this object. | |
| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| Returns a true value if this is an instance of Type. | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. | |
| 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. | |
| 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. | |
| 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. | |
| Standard_Integer | GetRefCount () const noexcept |
| Get the reference counter of this object. | |
| void | IncrementRefCounter () noexcept |
| Increments the reference counter of this object. | |
| Standard_Integer | DecrementRefCounter () noexcept |
| Decrements the reference counter of this object; returns the decremented value. | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. | |
Additional Inherited Members | |
| Public Types inherited from Standard_Transient | |
| typedef void | base_type |
| Returns a type descriptor about this object. | |
| Static Public Member Functions inherited from Standard_Transient | |
| static constexpr const char * | get_type_name () |
| Returns a type descriptor about this object. | |
| static const opencascade::handle< Standard_Type > & | get_type_descriptor () |
| Returns type descriptor of Standard_Transient class. | |
Detailed Description
The purpose of this class is to provide unified interface for building selecting frustum depending on current camera projection and orientation matrices, window size and viewport parameters.
Constructor & Destructor Documentation
◆ SelectMgr_FrustumBuilder()
| SelectMgr_FrustumBuilder::SelectMgr_FrustumBuilder | ( | ) |
Creates new frustum builder with empty matrices.
Member Function Documentation
◆ Camera()
|
inline |
Returns current camera.
◆ InvalidateViewport()
| void SelectMgr_FrustumBuilder::InvalidateViewport | ( | ) |
◆ ProjectPntOnViewPlane()
| gp_Pnt SelectMgr_FrustumBuilder::ProjectPntOnViewPlane | ( | const Standard_Real & | theX, |
| const Standard_Real & | theY, | ||
| const Standard_Real & | theZ ) const |
Projects 2d screen point onto view frustum plane: theZ = 0 - near plane, theZ = 1 - far plane.
◆ SetCamera()
| void SelectMgr_FrustumBuilder::SetCamera | ( | const Handle< Graphic3d_Camera > & | theCamera | ) |
Stores current camera.
◆ SetViewport()
| void SelectMgr_FrustumBuilder::SetViewport | ( | const Standard_Real | theX, |
| const Standard_Real | theY, | ||
| const Standard_Real | theWidth, | ||
| const Standard_Real | theHeight ) |
Stores current viewport coordinates.
◆ SetWindowSize()
| void SelectMgr_FrustumBuilder::SetWindowSize | ( | const Standard_Integer | theWidth, |
| const Standard_Integer | theHeight ) |
Stores current window width and height.
◆ SignedPlanePntDist()
| Standard_Real SelectMgr_FrustumBuilder::SignedPlanePntDist | ( | const SelectMgr_Vec3 & | theEq, |
| const SelectMgr_Vec3 & | thePnt ) const |
Calculates signed distance between plane with equation theEq and point thePnt.
◆ WindowSize()
| void SelectMgr_FrustumBuilder::WindowSize | ( | Standard_Integer & | theWidth, |
| Standard_Integer & | theHeight ) const |
The documentation for this class was generated from the following file:
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