67 lines
2 KiB
C++
67 lines
2 KiB
C++
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/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2006 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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//$Id$
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#include <mapnik/arrow.hpp>
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#include <agg_basics.h>
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namespace mapnik {
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arrow::arrow()
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: pos_(0)
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{
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x_[0] = -7.0; y_[0] = 1.0; cmd_[0] = agg::path_cmd_move_to;
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x_[1] = 1.0; y_[1] = 1.0; cmd_[1] = agg::path_cmd_line_to;
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x_[2] = 1.0; y_[2] = 3.0; cmd_[2] = agg::path_cmd_line_to;
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x_[3] = 7.0; y_[3] = 0.0; cmd_[3] = agg::path_cmd_line_to;
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x_[4] = 1.0; y_[4] =-3.0; cmd_[4] = agg::path_cmd_line_to;
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x_[5] = 1.0; y_[5] =-1.0; cmd_[5] = agg::path_cmd_line_to;
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x_[6] = -7.0; y_[6] =-1.0; cmd_[6] = agg::path_cmd_line_to;
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cmd_[7] = agg::path_cmd_end_poly | agg::path_flags_close | agg::path_flags_ccw;
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cmd_[8] = agg::path_cmd_stop;
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}
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void arrow::rewind(unsigned )
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{
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pos_ = 0;
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}
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unsigned arrow::vertex(double* x, double* y)
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{
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if(pos_ < 7 )
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{
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*x = x_[pos_];
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*y = y_[pos_];
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return cmd_[pos_++];
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}
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return agg::path_cmd_stop;
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}
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Envelope<double> arrow::extent() const
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{
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return Envelope<double>(-7,-3,7,3);
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}
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}
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