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113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkOpenGLLightMonitor
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkOpenGLLightMonitor
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* tracks state of OpenGL model-view and projection matrices.
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*
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*
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* vtkOpenGLLightMonitor -- A helper for painters that
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* tracks state of OpenGL lights. A Painter could use this
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* to skip expensive processing that is only needed when
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* lights change.
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*
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* this is not intended to be shared. each object should use it's
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* own instance of this class. it's intended to be called once per
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* render.
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*/
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#ifndef vtkOpenGLLightMonitor_h
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#define vtkOpenGLLightMonitor_h
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#include "vtkRenderingOpenGLModule.h" // for export macro
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#include "vtkObject.h"
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class VTKRENDERINGOPENGL_EXPORT vtkOpenGLLightMonitor : public vtkObject
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{
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public:
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static vtkOpenGLLightMonitor* New();
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static vtkOpenGLLightMonitor *New(int lightId);
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vtkTypeMacro(vtkOpenGLLightMonitor, vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent);
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//@{
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/**
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* Set/Get the light id of the OpenGL light to track. The
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* light id must be set prior to use. Default value 0.
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*/
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vtkSetMacro(LightId, int);
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vtkGetMacro(LightId, int);
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//@}
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/**
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* Fetches the current GL state and updates the
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* internal copies of the data. returns true if
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* any of the tracked OpenGL lights have changed.
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* Typically this is the only function a user needs
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* to call.
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*/
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bool StateChanged();
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/**
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* Fetch and save OpenGL light state. Note,
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* this is done automatically in SateChanged.
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*/
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void Update();
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//@{
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/**
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* Setters for internal state.
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*/
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void SetEnabled(int val);
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void SetAmbient(float *val);
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void SetDiffuse(float *val);
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void SetSpecular(float *val);
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void SetPosition(float *val);
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void SetSpotDirection(float *val);
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void SetSpotExponent(float val);
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void SetSpotCutoff(float val);
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void SetAttenuation(float *val);
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//@}
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private:
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vtkOpenGLLightMonitor(int lightId) : LightId(lightId), UpTime(0)
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{ this->Initialize(); }
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vtkOpenGLLightMonitor() : LightId(0), UpTime(0)
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{ this->Initialize(); }
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~vtkOpenGLLightMonitor(){}
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void Initialize();
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private:
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int LightId;
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int Enabled;
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float Ambient[4];
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float Diffuse[4];
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float Specular[4];
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float Position[4];
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float SpotDirection[3];
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float SpotExponent;
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float SpotCutoff;
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float Attenuation[3];
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long long UpTime;
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private:
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vtkOpenGLLightMonitor(const vtkOpenGLLightMonitor &) VTK_DELETE_FUNCTION;
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void operator=(const vtkOpenGLLightMonitor &) VTK_DELETE_FUNCTION;
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};
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#endif
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