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120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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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 vtkOpenGLPointGaussianMapper
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* @brief draw PointGaussians using imposters
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*
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* An OpenGL mapper that uses imposters to draw PointGaussians. Supports
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* transparency and picking as well.
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*/
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#ifndef vtkOpenGLPointGaussianMapper_h
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#define vtkOpenGLPointGaussianMapper_h
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#include "vtkPointGaussianMapper.h"
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#include "vtkRenderingOpenGL2Module.h" // For export macro
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#include <vector> // for ivar
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class vtkOpenGLPointGaussianMapperHelper;
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class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLPointGaussianMapper : public vtkPointGaussianMapper
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{
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public:
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static vtkOpenGLPointGaussianMapper* New();
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vtkTypeMacro(vtkOpenGLPointGaussianMapper, vtkPointGaussianMapper);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Release any graphics resources that are being consumed by this mapper.
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* The parameter window could be used to determine which graphic
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* resources to release.
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*/
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void ReleaseGraphicsResources(vtkWindow*) override;
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/**
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* Based on emissive setting
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*/
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bool HasTranslucentPolygonalGeometry() override;
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/**
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* This calls RenderPiece (in a for loop if streaming is necessary).
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*/
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void Render(vtkRenderer* ren, vtkActor* act) override;
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/**
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* allows a mapper to update a selections color buffers
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* Called from a prop which in turn is called from the selector
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*/
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void ProcessSelectorPixelBuffers(
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vtkHardwareSelector* sel, std::vector<unsigned int>& pixeloffsets, vtkProp* prop) override;
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protected:
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vtkOpenGLPointGaussianMapper();
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~vtkOpenGLPointGaussianMapper() override;
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void ReportReferences(vtkGarbageCollector* collector) override;
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std::vector<vtkOpenGLPointGaussianMapperHelper*> Helpers;
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vtkOpenGLPointGaussianMapperHelper* CreateHelper();
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void CopyMapperValuesToHelper(vtkOpenGLPointGaussianMapperHelper* helper);
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vtkTimeStamp HelperUpdateTime;
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vtkTimeStamp ScaleTableUpdateTime;
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vtkTimeStamp OpacityTableUpdateTime;
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// unused
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void RenderPiece(vtkRenderer*, vtkActor*) override {}
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void RenderInternal(vtkRenderer*, vtkActor*);
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// create the table for opacity values
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void BuildOpacityTable();
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// create the table for scale values
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void BuildScaleTable();
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float* OpacityTable; // the table
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double OpacityScale; // used for quick lookups
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double OpacityOffset; // used for quick lookups
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float* ScaleTable; // the table
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double ScaleScale; // used for quick lookups
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double ScaleOffset; // used for quick lookups
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/**
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* We need to override this method because the standard streaming
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* demand driven pipeline may not be what we need as we can handle
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* hierarchical data as input
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*/
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vtkExecutive* CreateDefaultExecutive() override;
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/**
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* Need to define the type of data handled by this mapper.
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*/
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int FillInputPortInformation(int port, vtkInformation* info) override;
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/**
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* Need to loop over the hierarchy to compute bounds
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*/
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void ComputeBounds() override;
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// used by the hardware selector
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std::vector<std::vector<unsigned int> > PickPixels;
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private:
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vtkOpenGLPointGaussianMapper(const vtkOpenGLPointGaussianMapper&) = delete;
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void operator=(const vtkOpenGLPointGaussianMapper&) = delete;
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};
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#endif
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