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80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkLightingHelper.h
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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 vtkLightingHelper
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* @brief helper to assist in simulating lighting similar
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* to default OpenGL pipeline.
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*
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*
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* vtkLightingHelper is an helper to assist in simulating lighting similar
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* to default OpenGL pipeline. Look at vtkLightingHelper_s for available
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* GLSL functions.
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*
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* @sa
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* vtkShaderProgram2
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*/
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#ifndef vtkLightingHelper_h
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#define vtkLightingHelper_h
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#include "vtkRenderingOpenGLModule.h" // For export macro
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#include "vtkObject.h"
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#include "vtkShader2.h" // for vtkShader2Type
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class vtkShaderProgram2;
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class VTKRENDERINGOPENGL_EXPORT vtkLightingHelper : public vtkObject
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{
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public:
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static vtkLightingHelper* New();
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vtkTypeMacro(vtkLightingHelper, vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent);
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enum {
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VTK_MAX_LIGHTS=8
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};
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//@{
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/**
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* Get/Set the shader program to which we want to add the lighting kernels.
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* mode = VTK_SHADER_TYPE_VERTEX or VTK_SHADER_TYPE_FRAGMENT
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* depending on whether the vertex lighting or fragment lighting is to be
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* used.
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*/
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void Initialize(vtkShaderProgram2 *shader, vtkShader2Type mode);
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vtkGetObjectMacro(Shader, vtkShaderProgram2);
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//@}
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/**
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* Encodes light state in diffuse component 3, where the shader looks for it.
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*/
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void EncodeLightState(){ this->PrepareForRendering(); }
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void PrepareForRendering();
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protected:
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vtkLightingHelper();
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~vtkLightingHelper();
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void SetShader(vtkShaderProgram2 *shader);
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vtkShaderProgram2 *Shader;
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private:
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vtkLightingHelper(const vtkLightingHelper&) VTK_DELETE_FUNCTION;
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void operator=(const vtkLightingHelper&) VTK_DELETE_FUNCTION;
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};
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#endif
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