109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
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// Copyright (c) 2005-2007 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).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Surface_mesher/include/CGAL/Gray_level_image_3.h $
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// $Id: Gray_level_image_3.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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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 <CGAL/license/Surface_mesher.h>
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#include <CGAL/basic.h>
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#include <CGAL/auto_link/ImageIO.h>
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#include <boost/shared_ptr.hpp>
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#ifdef CGAL_SURFACE_MESHER_DEBUG_GRAY_LEVEL_IMAGE_3_CONSTRUCTOR
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#include <boost/format.hpp>
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#endif
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#include <CGAL/Image_3.h>
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namespace CGAL {
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template <typename FT, typename Point>
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class Gray_level_image_3 : public Image_3
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{
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float isovalue;
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bool positive_inside;
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float value_outside;
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public:
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Gray_level_image_3(const Image_3& image, float isoval)
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: Image_3(image),
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isovalue(isoval),
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positive_inside(true),
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value_outside(0.f)
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{
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}
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Gray_level_image_3(const char* file, float isoval, bool positive_inside_=true, float value_outside = 0.f)
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: Image_3(),
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isovalue(isoval),
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positive_inside(positive_inside_),
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value_outside(value_outside)
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{
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#ifdef CGAL_SURFACE_MESHER_DEBUG_GRAY_LEVEL_IMAGE_3_CONSTRUCTOR
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std::cerr <<
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::boost::format("Constructing a Gray_level_image_3(\"%1%\")... ") % file;
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#endif
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Image_3::read(file);
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#ifdef CGAL_SURFACE_MESHER_DEBUG_GRAY_LEVEL_IMAGE_3_CONSTRUCTOR
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if( image_ptr.get() != 0 )
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{
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std::cerr << ::boost::format(" = %1%\n") % image_ptr.get();
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}
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#endif
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}
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~Gray_level_image_3()
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{
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#ifdef CGAL_SURFACE_MESHER_DEBUG_GRAY_LEVEL_IMAGE_3_CONSTRUCTOR
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std::cerr << ::boost::format("~Gray_level_image_3() image=%1%\n") % image;
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#endif
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}
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static void print_supported_file_format()
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{
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::printSupportedFileFormat();
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}
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FT operator()(Point p) const
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{
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const float X=static_cast<float>(to_double(p.x()));
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const float Y=static_cast<float>(to_double(p.y()));
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const float Z=static_cast<float>(to_double(p.z()));
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float value = ::triLinInterp(this->image_ptr.get(), X, Y, Z, value_outside);
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if (positive_inside)
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{
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if (value > isovalue) // inside
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return FT(-1);
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else if (value < isovalue) // outside
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return FT(1);
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else
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return FT(0);
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}
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else
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{
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if (value < isovalue) // inside
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return FT(-1);
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else if (value > isovalue) // outside
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return FT(1);
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else
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return FT(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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