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BL_MeshDeformer.cpp

/**
 * $Id: BL_MeshDeformer.cpp,v 1.7 2004/07/16 14:45:06 sirdude Exp $
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 * Simple deformation controller that restores a mesh to its rest position
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifdef WIN32
// This warning tells us about truncation of __long__ stl-generated names.
// It can occasionally cause DevStudio to have internal compiler warnings.
#pragma warning( disable : 4786 )     
#endif

#include "RAS_IPolygonMaterial.h"
#include "BL_MeshDeformer.h"
#include "BL_SkinMeshObject.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_arithb.h"

#include "GEN_Map.h"
#include "STR_HashedString.h"


00055 bool BL_MeshDeformer::Apply(RAS_IPolyMaterial *mat)
{
      size_t                  i, j, index;
      vecVertexArray    array;
      vecIndexArrays    mvarray;
      vecIndexArrays    diarray;
      
      RAS_TexVert *tv;
      MVert *mvert;
      
      // For each material
      array = m_pMeshObject->GetVertexCache(mat);
      mvarray = m_pMeshObject->GetMVertCache(mat);
      diarray = m_pMeshObject->GetDIndexCache(mat);
      
      // For each array
      for (i=0; i<array.size(); i++){
            //    For each vertex
            for (j=0; j<array[i]->size(); j++){
                  tv = &((*array[i])[j]);
                  index = ((*diarray[i])[j]);

                  mvert = &(m_bmesh->mvert[((*mvarray[i])[index])]);
                  tv->SetXYZ(MT_Point3(mvert->co));
            }
      }
      return true;
}

BL_MeshDeformer::~BL_MeshDeformer()
{     
      if (m_transverts)
            delete []m_transverts;
      if (m_transnors)
            delete []m_transnors;
};

/**
 * @warning This function is expensive!
 */
00095 void BL_MeshDeformer::RecalcNormals()
{
      int v, f;
      float fnor[3], co1[3], co2[3], co3[3], co4[3];

      /* Clear all vertex normal accumulators */
      for (v =0; v<m_bmesh->totvert; v++){
            m_transnors[v]=MT_Point3(0,0,0);
      }
      
      /* Find the face normals */
      for (f = 0; f<m_bmesh->totface; f++){
            // Make new face normal based on the transverts
            MFace *mf= &((MFace*)m_bmesh->mface)[f];
            
            if (mf->v3) {
                  for (int vl=0; vl<3; vl++){
                        co1[vl]=m_transverts[mf->v1][vl];
                        co2[vl]=m_transverts[mf->v2][vl];
                        co3[vl]=m_transverts[mf->v3][vl];
                        if (mf->v4)
                              co4[vl]=m_transverts[mf->v4][vl];
                  }

                  /* FIXME: Use moto */
                  if (mf->v4)
                        CalcNormFloat4(co1, co2, co3, co4, fnor);
                  else
                        CalcNormFloat(co1, co2, co3, fnor);
      
                  /* Decide which normals are affected by this face's normal */
                  m_transnors[mf->v1]+=MT_Point3(fnor);
                  m_transnors[mf->v2]+=MT_Point3(fnor);
                  m_transnors[mf->v3]+=MT_Point3(fnor);
                  if (mf->v4)
                        m_transnors[mf->v4]+=MT_Point3(fnor);

            }
            
      }
      
      for (v =0; v<m_bmesh->totvert; v++){
//          float nor[3];

            m_transnors[v]=m_transnors[v].safe_normalized();
//          nor[0]=m_transnors[v][0];
//          nor[1]=m_transnors[v][1];
//          nor[2]=m_transnors[v][2];
            
      };
}

void BL_MeshDeformer::VerifyStorage()
{
      /* Ensure that we have the right number of verts assigned */
      if (m_tvtot!=m_bmesh->totvert+m_bmesh->totface){
            if (m_transverts)
                  delete []m_transverts;
            if (m_transnors)
                  delete []m_transnors;
            
            m_transnors =new MT_Point3[m_bmesh->totvert+m_bmesh->totface];
            m_transverts=new MT_Point3[m_bmesh->totvert];
            m_tvtot = m_bmesh->totvert;
      }
}
 

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