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99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkProjectedTetrahedraMapper.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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* Copyright 2003 Sandia Corporation.
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* Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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* license for use of this work by or on behalf of the
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* U.S. Government. Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that this Notice and any
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* statement of authorship are reproduced on all copies.
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*/
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/**
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* @class vtkProjectedTetrahedraMapper
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* @brief Unstructured grid volume renderer.
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*
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*
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* vtkProjectedTetrahedraMapper is an implementation of the classic
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* Projected Tetrahedra algorithm presented by Shirley and Tuchman in "A
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* Polygonal Approximation to Direct Scalar Volume Rendering" in Computer
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* Graphics, December 1990.
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*
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* @bug
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* This mapper relies highly on the implementation of the OpenGL pipeline.
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* A typical hardware driver has lots of options and some settings can
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* cause this mapper to produce artifacts.
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*
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*/
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#ifndef vtkProjectedTetrahedraMapper_h
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#define vtkProjectedTetrahedraMapper_h
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#include "vtkRenderingVolumeModule.h" // For export macro
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#include "vtkUnstructuredGridVolumeMapper.h"
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class vtkFloatArray;
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class vtkPoints;
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class vtkUnsignedCharArray;
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class vtkVisibilitySort;
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class vtkVolumeProperty;
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class vtkRenderWindow;
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class VTKRENDERINGVOLUME_EXPORT vtkProjectedTetrahedraMapper : public vtkUnstructuredGridVolumeMapper
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{
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public:
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vtkTypeMacro(vtkProjectedTetrahedraMapper,
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vtkUnstructuredGridVolumeMapper);
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static vtkProjectedTetrahedraMapper *New();
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virtual void PrintSelf(ostream &os, vtkIndent indent);
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virtual void SetVisibilitySort(vtkVisibilitySort *sort);
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vtkGetObjectMacro(VisibilitySort, vtkVisibilitySort);
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static void MapScalarsToColors(vtkDataArray *colors,
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vtkVolumeProperty *property,
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vtkDataArray *scalars);
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static void TransformPoints(vtkPoints *inPoints,
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const float projection_mat[16],
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const float modelview_mat[16],
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vtkFloatArray *outPoints);
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/**
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* Return true if the rendering context provides
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* the nececessary functionality to use this class.
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*/
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virtual bool IsSupported(vtkRenderWindow *)
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{ return false; }
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protected:
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vtkProjectedTetrahedraMapper();
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~vtkProjectedTetrahedraMapper();
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vtkVisibilitySort *VisibilitySort;
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/**
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* The visibility sort will probably make a reference loop by holding a
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* reference to the input.
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*/
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void ReportReferences(vtkGarbageCollector *collector) VTK_OVERRIDE;
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private:
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vtkProjectedTetrahedraMapper(const vtkProjectedTetrahedraMapper &) VTK_DELETE_FUNCTION;
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void operator=(const vtkProjectedTetrahedraMapper &) VTK_DELETE_FUNCTION;
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};
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#endif
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