D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlGraphics/GeometryLoadCallback.hpp

Go to the documentation of this file.

/**************************************************************************************/
/*                                                                                    */
/*  Visualization Library                                                             */
/*  http://www.visualizationlibrary.com                                               */
/*                                                                                    */
/*  Copyright (c) 2005-2010, Michele Bosi                                             */
/*  All rights reserved.                                                              */
/*                                                                                    */
/*  Redistribution and use in source and binary forms, with or without modification,  */
/*  are permitted provided that the following conditions are met:                     */
/*                                                                                    */
/*  - Redistributions of source code must retain the above copyright notice, this     */
/*  list of conditions and the following disclaimer.                                  */
/*                                                                                    */
/*  - Redistributions in binary form must reproduce the above copyright notice, this  */
/*  list of conditions and the following disclaimer in the documentation and/or       */
/*  other materials provided with the distribution.                                   */
/*                                                                                    */
/*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND   */
/*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED     */
/*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE            */
/*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR  */
/*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    */
/*  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;      */
/*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON    */
/*  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT           */
/*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS     */
/*  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                      */
/*                                                                                    */
/**************************************************************************************/

#ifndef GeometryLoadCallback_INCLUDE_ONCE
#define GeometryLoadCallback_INCLUDE_ONCE

#include <vlGraphics/Geometry.hpp>
#include <vlGraphics/TriangleStripGenerator.hpp>
#include <vlGraphics/DoubleVertexRemover.hpp>
#include <vlCore/LoadWriterManager.hpp>

namespace vl
{
  class GeometryLoadCallback: public LoadCallback
  {
  public:
    GeometryLoadCallback()
    {
      mTransformGeometry = false;
      mDiscardOriginalNormals = false;
      mComputeNormals  = true;
      mRemoveDoubles   = false;
      mSortVertices    = false;
      mStripfy         = false;
      mConvertToDrawArrays = false;
      mUseDisplayLists = false;
      mUseVBOs         = true;
    }
    virtual const char* className() { return "vl::GeometryLoadCallback"; }

    void operator()(ResourceDatabase* db)
    {
      if (stripfy())
        setRemoveDoubles(true);

      std::vector< vl::ref<vl::Geometry> > geom;
      db->get<Geometry>(geom);
      for(unsigned int i=0; i<geom.size(); ++i)
      {
        if (discardOriginalNormals())
          geom[i]->setNormalArray(NULL);

        if (computeNormals() && !geom[i]->normalArray())
          geom[i]->computeNormals();

        if (removeDoubles())
          DoubleVertexRemover().removeDoubles(geom[i].get());

        if (sortVertices())
          geom[i]->sortVertices();

        if (stripfy())
          TriangleStripGenerator().stripfy(geom[i].get(), 22, true, false, true);

        if (convertToDrawArrays())
          geom[i]->convertDrawCallToDrawArrays();

        geom[i]->setDisplayListEnabled(useDisplayLists());
        geom[i]->setVBOEnabled(useVBOs());

        if (transformGeometry())
          geom[i]->transform(transformMatrix(),true);
      }
    }

    bool discardOriginalNormals() const { return mDiscardOriginalNormals; }
    void setDiscardOriginalNormals(bool on) { mDiscardOriginalNormals = on; }

    bool computeNormals() const { return mComputeNormals; }
    void setComputeNormals(bool cn) { mComputeNormals = cn; }

    bool removeDoubles() const { return mRemoveDoubles; }
    void setRemoveDoubles(bool rd) { mRemoveDoubles = rd; }

    void setSortVertices(bool on) { mSortVertices = on; }
    bool sortVertices() const { return mSortVertices; }

    void setStripfy(bool on) { mStripfy = on; }
    bool stripfy() const { return mStripfy; }

    bool convertToDrawArrays() const { return mConvertToDrawArrays; }
    void setConvertToDrawArrays(bool on) { mConvertToDrawArrays = on; }

    void setUseDisplayLists(bool on) { mUseDisplayLists = on; }
    bool useDisplayLists() const { return mUseDisplayLists; }

    void setUseVBOs(bool on) { mUseVBOs = on; }
    bool useVBOs() const { return mUseVBOs; }

    const mat4& transformMatrix() const { return mMatrix; }
    void setTransformMatrix(const mat4& m) { mMatrix = m; }

    bool transformGeometry() const { return mTransformGeometry; }
    void setTransformGeometry(bool on) { mTransformGeometry = on; }

  protected:
    mat4 mMatrix;
    bool mTransformGeometry;
    bool mDiscardOriginalNormals;
    bool mComputeNormals;
    bool mRemoveDoubles;
    bool mSortVertices;
    bool mStripfy;
    bool mConvertToDrawArrays;
    bool mUseDisplayLists;
    bool mUseVBOs;
  };
}

#endif