mirror of https://github.com/CGAL/cgal
137 lines
4.6 KiB
C
137 lines
4.6 KiB
C
// Copyright (c) 1997 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL 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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// $URL$
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// $Id$
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//
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//
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// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
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#ifndef CGAL_BASIC_H
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#include <CGAL/basic.h>
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#endif // CGAL_BASIC_H
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#ifndef CGAL_PROTECT_CSTDLIB
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#include <cstdlib>
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#define CGAL_PROTECT_CSTDLIB
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#endif
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#ifndef CGAL_PROTECT_IOSTREAM
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#include <iostream>
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#define CGAL_PROTECT_IOSTREAM
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#endif
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#ifndef CGAL_IO_BINARY_FILE_IO_H
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#include <CGAL/IO/binary_file_io.h>
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#endif // CGAL_IO_BINARY_FILE_IO_H
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#ifndef CGAL_IO_FILE_SCANNER_OFF_H
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#include <CGAL/IO/File_scanner_OFF.h>
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#endif // CGAL_IO_FILE_SCANNER_OFF_H
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CGAL_BEGIN_NAMESPACE
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void
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File_scanner_OFF::
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skip_to_next_vertex( int current_vertex) {
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CGAL_assertion( current_vertex < size_of_vertices());
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if ( binary()) {
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float f;
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if ( has_normals() && ! normals_read) {
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I_Binary_read_big_endian_float32( m_in, f);
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I_Binary_read_big_endian_float32( m_in, f);
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I_Binary_read_big_endian_float32( m_in, f);
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if ( is_homogeneous())
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I_Binary_read_big_endian_float32( m_in, f);
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}
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if ( has_colors()) {
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// It is not well stated in the Geomview manual
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// how color is coded following a vertex. It is
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// parsed similar to the optional color for facets.
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Integer32 k;
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I_Binary_read_big_endian_integer32( m_in, k);
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if (k<0 || k>4) {
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m_in.clear( std::ios::badbit);
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if ( verbose()) {
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std::cerr << " " << std::endl;
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std::cerr << "File_scanner_OFF::" << std::endl;
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std::cerr << "skip_to_next_vertex(): input error: bad "
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" number of color indices at vertex "
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<< current_vertex << "." << std::endl;
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}
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set_off_header( false);
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return;
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}
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while (k--) {
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float dummy;
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I_Binary_read_big_endian_float32( m_in, dummy);
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}
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}
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} else {
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if ( has_normals() && ! normals_read) {
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double dummy;
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if ( is_homogeneous()) {
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m_in >> dummy >> dummy >> dummy >> dummy;
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} else {
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m_in >> dummy >> dummy >> dummy;
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}
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}
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if ( has_colors()) { // skip color entries (1 to 4)
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m_in >> skip_until_EOL;
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}
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}
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if( ! m_in) {
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if ( verbose()) {
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std::cerr << " " << std::endl;
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std::cerr << "File_scanner_OFF::" << std::endl;
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std::cerr << "skip_to_next_vertex(): input error: cannot read "
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"OFF file beyond vertex " << current_vertex << "."
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<< std::endl;
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}
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set_off_header( false);
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return;
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}
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normals_read = false;
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}
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void
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File_scanner_OFF::
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skip_to_next_facet( int current_facet) {
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// Take care of trailing informations like color triples.
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if ( binary()) {
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Integer32 k;
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I_Binary_read_big_endian_integer32( m_in, k);
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if (k<0 || k>4) {
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m_in.clear( std::ios::badbit);
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if ( verbose()) {
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std::cerr << " " << std::endl;
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std::cerr << "File_scanner_OFF::" << std::endl;
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std::cerr << "skip_to_next_facet(): input error: bad "
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"number of color indices at vertex "
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<< current_facet << "." << std::endl;
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}
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set_off_header( false);
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return;
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}
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while (k--) {
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float dummy;
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I_Binary_read_big_endian_float32( m_in, dummy);
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}
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} else {
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m_in >> skip_until_EOL;
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}
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}
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CGAL_END_NAMESPACE
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// EOF //
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