Open CASCADE Technology  7.1.0.beta
Public Member Functions

V3d_PositionalLight Class Reference

Creation and modification of an isolated (positional) light source. More...

#include <V3d_PositionalLight.hxx>

Inheritance diagram for V3d_PositionalLight:
Inheritance graph
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Public Member Functions

 V3d_PositionalLight (const Handle< V3d_Viewer > &theViewer, const V3d_Coordinate theX, const V3d_Coordinate theY, const V3d_Coordinate theZ, const Quantity_NameOfColor theColor=Quantity_NOC_WHITE, const Quantity_Coefficient theConstAttenuation=1.0, const Quantity_Coefficient theLinearAttenuation=0.0)
 Creates an isolated light source theX, theY, theZ in the viewer. It is also defined by the color theColor and two attenuation factors theConstAttentuation, theLinearAttentuation. The resulting attenuation factor determining the illumination of a surface depends on the following formula : F = 1/(ConstAttenuation + LinearAttenuation*Length) Length is the distance of the isolated source from the surface. //! Warning! raises BadValue from V3d if one of the attenuation coefficients is not in range [0, 1]. More...
 
 V3d_PositionalLight (const Handle< V3d_Viewer > &theViewer, const V3d_Coordinate theXt, const V3d_Coordinate theYt, const V3d_Coordinate theZt, const V3d_Coordinate theXp, const V3d_Coordinate theYp, const V3d_Coordinate theZp, const Quantity_NameOfColor theColor=Quantity_NOC_WHITE, const Quantity_Coefficient theConstAttenuation=1.0, const Quantity_Coefficient theLinearAttenuation=0.0)
 Creates a light source of the Positional type in the viewer. theXt, theYt, theZt : Coordinate of Target light source. theXp, theYp, theZp : Coordinate of Position light source. The light source is also defined by the color Color and two attenuation factors theConstAttentuation, theLinearAttentuation that determine the illumination of a surface using the following formula : F = 1/(ConstAttenuation + LinearAttenuation*Length) Length is the distance of the isolated source from the surface. //! Warning! raises BadValue from V3d if one of the attenuation coefficients is not between 0 et 1. More...
 
virtual void SetPosition (const V3d_Coordinate theX, const V3d_Coordinate theY, const V3d_Coordinate theZ) override
 Defines the position of the light source. More...
 
void SetAttenuation (const Quantity_Coefficient theConstAttenuation, const Quantity_Coefficient theLinearAttenuation)
 Defines the attenuation factors. Warning: raises BadValue from V3d if one of the attenuation coefficients is not between 0 et 1. More...
 
void SetSmoothRadius (const Standard_Real theValue)
 Modifies the smoothing radius. More...
 
void Display (const Handle< V3d_View > &theView, const V3d_TypeOfRepresentation theRepresentation) override
 Display the graphic structure of light source in the chosen view. We have three type of representation. More...
 
void Position (V3d_Coordinate &theX, V3d_Coordinate &theY, V3d_Coordinate &theZ) const override
 Returns the position of the light source. More...
 
void Attenuation (Quantity_Coefficient &theConstAttenuation, Quantity_Coefficient &theLinearAttenuation) const
 Returns the attenuation factors. More...
 
- Public Member Functions inherited from V3d_PositionLight
void SetTarget (const V3d_Coordinate theX, const V3d_Coordinate theY, const V3d_Coordinate theZ)
 Defines the target of the light (the center of the sphere). More...
 
void SetRadius (const Quantity_Parameter theRadius)
 Define the radius. More...
 
void OnHideFace (const Handle< V3d_View > &theView)
 Calculate the position of the light, on the hide face of the picking sphere. More...
 
void OnSeeFace (const Handle< V3d_View > &theView)
 Calculate the position of the light, on the seen face of the picking sphere. More...
 
void Tracking (const Handle< V3d_View > &theView, const V3d_TypeOfPickLight theWathPick, const Standard_Integer theXpix, const Standard_Integer theYpix)
 Tracking the light position, or the light space, or the radius of the light space, that depends of initial picking "theWhatPick" (see the pick method). If theWhatPick is SPACELIGHT, then the parameters theXpix, theYpix are the coordinates of a translation vector. More...
 
void Erase ()
 Erase the graphic structure of light source. More...
 
Quantity_Parameter Radius () const
 Returns the radius of the picking sphere. More...
 
Standard_Boolean SeeOrHide (const Handle< V3d_View > &theView) const
 Returns the visibility status If True the source is visible. If False it's hidden. More...
 
void Target (V3d_Coordinate &theX, V3d_Coordinate &theY, V3d_Coordinate &theZ) const
 Returns the position of the target of the light source. More...
 
- Public Member Functions inherited from V3d_Light
void SetColor (const Quantity_TypeOfColor theType, const Quantity_Parameter theValue1, const Quantity_Parameter theValue2, const Quantity_Parameter theValue3)
 Defines the color of a light source according to the type of color definition and the three corresponding values. More...
 
void SetColor (const Quantity_NameOfColor theName)
 Defines the color of a light source by giving the name of the color in the form Quantity_NOC_xxxx. More...
 
void SetColor (const Quantity_Color &theColor)
 Defines the color of a light source by giving the basic color. More...
 
void Color (const Quantity_TypeOfColor theType, Quantity_Parameter &theValue1, Quantity_Parameter &theValue2, Quantity_Parameter &theValue3) const
 Returns the color of the light source depending of the color type. More...
 
void Color (Quantity_NameOfColor &theName) const
 Returns the color of the light source. More...
 
Quantity_Color Color () const
 Returns the color of the light source. More...
 
V3d_TypeOfLight Type () const
 Returns the Type of the Light. More...
 
Standard_Boolean Headlight () const
 returns true if the light is a headlight More...
 
void SetHeadlight (const Standard_Boolean theValue)
 Setup headlight flag. More...
 
void SetIntensity (const Standard_Real theValue)
 Modifies the intensity of light source. More...
 
Standard_Real Intensity () const
 returns the intensity of light source More...
 
Standard_Real Smoothness () const
 returns the smoothness of light source More...
 
Standard_Boolean IsDisplayed () const
 Returns TRUE when a light representation is displayed. More...
 
- Public Member Functions inherited from MMgt_TShared
virtual void Delete () const override
 Memory deallocator for transient classes. More...
 
- Public Member Functions inherited from Standard_Transient
 Standard_Transient ()
 Empty constructor. More...
 
 Standard_Transient (const Standard_Transient &)
 Copy constructor – does nothing. More...
 
Standard_Transientoperator= (const Standard_Transient &)
 Assignment operator, needed to avoid copying reference counter. More...
 
virtual ~Standard_Transient ()
 Destructor must be virtual. 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_TransientThis () 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...
 

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...
 
- Protected Member Functions inherited from V3d_PositionLight
 V3d_PositionLight (const Handle< V3d_Viewer > &theViewer)
 
- Protected Member Functions inherited from V3d_Light
 V3d_Light (const Handle< V3d_Viewer > &theViewer)
 
void SetType (const V3d_TypeOfLight theType)
 Sets type of the light. More...
 
const Graphic3d_CLightLight () const
 Return light properties associated to this light source. Hidden method exposed only to V3d_View. More...
 
- Static Protected Member Functions inherited from V3d_Light
static void SymetricPointOnSphere (const Handle< V3d_View > &aView, const Graphic3d_Vertex &Center, const Graphic3d_Vertex &aPoint, const Quantity_Parameter Radius, V3d_Coordinate &X, V3d_Coordinate &Y, V3d_Coordinate &Z, Quantity_Parameter &VX, Quantity_Parameter &VY, Quantity_Parameter &VZ)
 Returns the symetric point coordinates of "aPoint" on the sphere of center "Center" and radius "Radius". VX,VY,VZ is the project vector of view. More...
 
- Protected Attributes inherited from V3d_PositionLight
Graphic3d_Vertex myTarget
 
V3d_TypeOfRepresentation myTypeOfRepresentation
 
- Protected Attributes inherited from V3d_Light
Graphic3d_CLight myLight
 
Handle< Graphic3d_StructuremyGraphicStructure
 
Handle< Graphic3d_StructuremyGraphicStructure1
 

Detailed Description

Creation and modification of an isolated (positional) light source.

Constructor & Destructor Documentation

V3d_PositionalLight::V3d_PositionalLight ( const Handle< V3d_Viewer > &  theViewer,
const V3d_Coordinate  theX,
const V3d_Coordinate  theY,
const V3d_Coordinate  theZ,
const Quantity_NameOfColor  theColor = Quantity_NOC_WHITE,
const Quantity_Coefficient  theConstAttenuation = 1.0,
const Quantity_Coefficient  theLinearAttenuation = 0.0 
)

Creates an isolated light source theX, theY, theZ in the viewer. It is also defined by the color theColor and two attenuation factors theConstAttentuation, theLinearAttentuation. The resulting attenuation factor determining the illumination of a surface depends on the following formula : F = 1/(ConstAttenuation + LinearAttenuation*Length) Length is the distance of the isolated source from the surface. //! Warning! raises BadValue from V3d if one of the attenuation coefficients is not in range [0, 1].

V3d_PositionalLight::V3d_PositionalLight ( const Handle< V3d_Viewer > &  theViewer,
const V3d_Coordinate  theXt,
const V3d_Coordinate  theYt,
const V3d_Coordinate  theZt,
const V3d_Coordinate  theXp,
const V3d_Coordinate  theYp,
const V3d_Coordinate  theZp,
const Quantity_NameOfColor  theColor = Quantity_NOC_WHITE,
const Quantity_Coefficient  theConstAttenuation = 1.0,
const Quantity_Coefficient  theLinearAttenuation = 0.0 
)

Creates a light source of the Positional type in the viewer. theXt, theYt, theZt : Coordinate of Target light source. theXp, theYp, theZp : Coordinate of Position light source. The light source is also defined by the color Color and two attenuation factors theConstAttentuation, theLinearAttentuation that determine the illumination of a surface using the following formula : F = 1/(ConstAttenuation + LinearAttenuation*Length) Length is the distance of the isolated source from the surface. //! Warning! raises BadValue from V3d if one of the attenuation coefficients is not between 0 et 1.

Member Function Documentation

void V3d_PositionalLight::Attenuation ( Quantity_Coefficient theConstAttenuation,
Quantity_Coefficient theLinearAttenuation 
) const

Returns the attenuation factors.

void V3d_PositionalLight::Display ( const Handle< V3d_View > &  theView,
const V3d_TypeOfRepresentation  theRepresentation 
)
overridevirtual

Display the graphic structure of light source in the chosen view. We have three type of representation.

  • SIMPLE : Only the light source is displayed.
  • PARTIAL : The light source and the light space are displayed.
  • COMPLETE : The light source, the light space and the radius of light space are displayed. We can choose the "SAMELAST" as parameter of representation In this case the graphic structure representation will be the last displayed.

Reimplemented from V3d_PositionLight.

void V3d_PositionalLight::Position ( V3d_Coordinate theX,
V3d_Coordinate theY,
V3d_Coordinate theZ 
) const
overridevirtual

Returns the position of the light source.

Implements V3d_PositionLight.

void V3d_PositionalLight::SetAttenuation ( const Quantity_Coefficient  theConstAttenuation,
const Quantity_Coefficient  theLinearAttenuation 
)

Defines the attenuation factors. Warning: raises BadValue from V3d if one of the attenuation coefficients is not between 0 et 1.

virtual void V3d_PositionalLight::SetPosition ( const V3d_Coordinate  theX,
const V3d_Coordinate  theY,
const V3d_Coordinate  theZ 
)
overridevirtual

Defines the position of the light source.

Implements V3d_PositionLight.

void V3d_PositionalLight::SetSmoothRadius ( const Standard_Real  theValue)

Modifies the smoothing radius.


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