Creation and modification of a spot. The attenuation factor F determines the illumination of a surface:
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| | V3d_SpotLight (const gp_Pnt &thePos, const V3d_TypeOfOrientation theDirection=V3d_XnegYnegZpos, const Quantity_Color &theColor=Quantity_NOC_WHITE) |
| | Creates a light source of the Spot type in the viewer with default attenuation factors (1.0, 0.0), concentration factor 1.0 and spot angle 30 degrees. More...
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| | V3d_SpotLight (const gp_Pnt &thePos, const gp_Dir &theDirection, const Quantity_Color &theColor=Quantity_NOC_WHITE) |
| | Creates a light source of the Spot type in the viewer with default attenuation factors (1.0, 0.0), concentration factor 1.0 and spot angle 30 degrees. More...
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| void | SetDirection (V3d_TypeOfOrientation theOrientation) |
| | Defines the direction of the light source according to a predefined directional vector. More...
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| | Standard_DEPRECATED ("This constructor is deprecated - the light source should be added to V3d_Viewer explicitly by method V3d_Viewer::AddLight()") 1 V3d_SpotLight(const Handle< V3d_Viewer > &theViewer |
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| | Standard_DEPRECATED ("This constructor is deprecated - the light source should be added to V3d_Viewer explicitly by method V3d_Viewer::AddLight()") 1 V3d_SpotLight(const Handle< V3d_Viewer > &theViewer |
| | theXt, theYt, theZt : Coordinate of light source Target. theXp, theYp, theZp : Coordinate of light source Position. More...
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| | Graphic3d_CLight (Graphic3d_TypeOfLightSource theType) |
| | Empty constructor, which should be followed by light source properties configuration. More...
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| Graphic3d_TypeOfLightSource | Type () const |
| | Returns the Type of the Light, cannot be changed after object construction. More...
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| const TCollection_AsciiString & | Name () const |
| | Returns light source name; empty string by default. More...
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| void | SetName (const TCollection_AsciiString &theName) |
| | Sets light source name. More...
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| const Quantity_Color & | Color () const |
| | Returns the color of the light source; WHITE by default. More...
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| void | SetColor (const Quantity_Color &theColor) |
| | Defines the color of a light source by giving the basic color. More...
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| Standard_Boolean | IsEnabled () const |
| | Check that the light source is turned on; TRUE by default. This flag affects all occurrences of light sources, where it was registered and activated; so that it is possible defining an active light in View which is actually in disabled state. More...
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| void | SetEnabled (Standard_Boolean theIsOn) |
| | Change enabled state of the light state. This call does not remove or deactivate light source in Views/Viewers; instead it turns it OFF so that it just have no effect. More...
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| Standard_Boolean | IsHeadlight () const |
| | Returns true if the light is a headlight; FALSE by default. Headlight flag means that light position/direction are defined not in a World coordinate system, but relative to the camera orientation. More...
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| Standard_Boolean | Headlight () const |
| | Alias for IsHeadlight(). More...
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| void | SetHeadlight (Standard_Boolean theValue) |
| | Setup headlight flag. More...
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| const gp_Pnt & | Position () const |
| | Returns location of positional/spot light; (0, 0, 0) by default. More...
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| void | SetPosition (const gp_Pnt &thePosition) |
| | Setup location of positional/spot light. More...
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| void | Position (Standard_Real &theX, Standard_Real &theY, Standard_Real &theZ) const |
| | Returns location of positional/spot light. More...
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| void | SetPosition (Standard_Real theX, Standard_Real theY, Standard_Real theZ) |
| | Setup location of positional/spot light. More...
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| Standard_ShortReal | ConstAttenuation () const |
| | Returns constant attenuation factor of positional/spot light source; 1.0f by default. Distance attenuation factors of reducing positional/spot light intensity depending on the distance from its position: More...
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| Standard_ShortReal | LinearAttenuation () const |
| | Returns linear attenuation factor of positional/spot light source; 0.0 by default. Distance attenuation factors of reducing positional/spot light intensity depending on the distance from its position: More...
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| void | Attenuation (Standard_Real &theConstAttenuation, Standard_Real &theLinearAttenuation) const |
| | Returns the attenuation factors. More...
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| void | SetAttenuation (Standard_ShortReal theConstAttenuation, Standard_ShortReal theLinearAttenuation) |
| | Defines the coefficients of attenuation; values should be >= 0.0 and their summ should not be equal to 0. More...
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| gp_Dir | Direction () const |
| | Returns direction of directional/spot light. More...
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| void | SetDirection (const gp_Dir &theDir) |
| | Sets direction of directional/spot light. More...
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| void | Direction (Standard_Real &theVx, Standard_Real &theVy, Standard_Real &theVz) const |
| | Returns the theVx, theVy, theVz direction of the light source. More...
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| void | SetDirection (Standard_Real theVx, Standard_Real theVy, Standard_Real theVz) |
| | Sets direction of directional/spot light. More...
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| Standard_ShortReal | Angle () const |
| | Returns an angle in radians of the cone created by the spot; 30 degrees by default. More...
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| void | SetAngle (Standard_ShortReal theAngle) |
| | Angle in radians of the cone created by the spot, should be within range (0.0, M_PI). More...
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| Standard_ShortReal | Concentration () const |
| | Returns intensity distribution of the spot light, within [0.0, 1.0] range; 1.0 by default. This coefficient should be converted into spotlight exponent within [0.0, 128.0] range: More...
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| void | SetConcentration (Standard_ShortReal theConcentration) |
| | Defines the coefficient of concentration; value should be within range [0.0, 1.0]. More...
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| Standard_ShortReal | Intensity () const |
| | Returns the intensity of light source; 1.0 by default. More...
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| void | SetIntensity (Standard_ShortReal theValue) |
| | Modifies the intensity of light source, which should be > 0.0. More...
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| Standard_ShortReal | Smoothness () const |
| | Returns the smoothness of light source (either smoothing angle for directional light or smoothing radius in case of positional light); 0.0 by default. More...
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| void | SetSmoothRadius (Standard_ShortReal theValue) |
| | Modifies the smoothing radius of positional/spot light; should be >= 0.0. More...
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| void | SetSmoothAngle (Standard_ShortReal theValue) |
| | Modifies the smoothing angle (in radians) of directional light source; should be within range [0.0, M_PI/2]. More...
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| const TCollection_AsciiString & | GetId () const |
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| const Graphic3d_Vec4 & | PackedParams () const |
| | Packed light parameters. More...
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| const Graphic3d_Vec4 & | PackedColor () const |
| | Returns the color of the light source with dummy Alpha component, which should be ignored. More...
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| const Graphic3d_Vec4 & | PackedDirection () const |
| | Returns direction of directional/spot light. More...
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| Standard_Size | Revision () const |
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 Public Member Functions inherited from Standard_Transient |
| | Standard_Transient () |
| | Empty constructor. More...
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| | Standard_Transient (const Standard_Transient &) |
| | Copy constructor – does nothing. More...
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| Standard_Transient & | operator= (const Standard_Transient &) |
| | Assignment operator, needed to avoid copying reference counter. More...
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| virtual | ~Standard_Transient () |
| | Destructor must be virtual. More...
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| virtual void | Delete () const |
| | Memory deallocator for transient classes. More...
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| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| | Returns a type descriptor about this object. More...
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| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| | Returns a true value if this is an instance of Type. More...
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| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| | Returns a true value if this is an instance of TypeName. More...
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| 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...
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| 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...
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| 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...
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| Standard_Integer | GetRefCount () const |
| | Get the reference counter of this object. More...
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| void | IncrementRefCounter () const |
| | Increments the reference counter of this object. More...
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| Standard_Integer | DecrementRefCounter () const |
| | Decrements the reference counter of this object; returns the decremented value. More...
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Creation and modification of a spot. The attenuation factor F determines the illumination of a surface:
Where Distance is the distance from the source to the surface. The default values (1.0, 0.0) correspond to a minimum of attenuation. The concentration factor determines the dispersion of the light on the surface, the default value (1.0) corresponds to a minimum of dispersion.
