mirror of https://github.com/CGAL/cgal
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
// Copyright (c) 2005-2006 INRIA Sophia-Antipolis (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $Source: /proj/geometrica/home/CGAL/Local/cvsroot/InrImage/include/CGAL/Isosurface.h,v $
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// $Revision: 1.2 $ $Date: 2005/08/01 17:49:26 $
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// $Name: $
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//
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// Author(s) : Laurent RINEAU
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#ifndef CGAL_MESH_3_GRAY_LEVEL_IMAGE_3_H
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#define CGAL_MESH_3_GRAY_LEVEL_IMAGE_3_H
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#include "imageio/ImageIO.h"
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namespace CGAL {
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template <typename FT>
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class Gray_level_image_3
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{
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_image *image;
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float isovalue;
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float max_x, max_y, max_z;
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public:
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Gray_level_image_3(const char* file, float isoval=0)
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{
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image = ::_readImage(file);
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::convertImageTypeToFloat(image);
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isovalue=isoval;
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max_x = ((image->xdim) - 1.0)*(image->vx);
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max_y = ((image->ydim) - 1.0)*(image->vy);
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max_z = ((image->zdim) - 1.0)*(image->vz);
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}
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bool inside(float X, float Y, float Z) const
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{
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return ( X>=0. && Y>=0. && Z>=0. &&
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X<=max_x && Y<=max_y && Z<=max_z );
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}
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int operator()(double x, double y, double z) const
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{
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float X=static_cast<float>(x);
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float Y=static_cast<float>(y);
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float Z=static_cast<float>(z);
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if (!inside(X,Y,Z))
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return 1;
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else{
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float value = ::triLinInterp(image, X, Y, Z);
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if (value > isovalue)
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return -1;
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else if (value < isovalue)
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return 1;
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else
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return 0;
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}
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}
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}; // end Gray_level_image_3
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} // end namespace CGAL
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#endif // CGAL_MESH_3_GRAY_LEVEL_IMAGE_3_H
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