00001 /***************************************************************************** 00002 * 00003 * This file is part of Mapnik (c++ mapping toolkit) 00004 * 00005 * Copyright (C) 2006 Artem Pavlenko 00006 * 00007 * This library is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * This library is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with this library; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00020 * 00021 *****************************************************************************/ 00022 00023 //$Id$ 00024 00025 #ifndef HIT_TEST_FILTER_HPP 00026 #define HIT_TEST_FILTER_HPP 00027 00028 #include <mapnik/feature.hpp> 00029 00030 namespace mapnik { 00031 class hit_test_filter 00032 { 00033 public: 00034 hit_test_filter(double x, double y, double tol) 00035 : x_(x), 00036 y_(y), 00037 tol_(tol) {} 00038 00039 bool pass(Feature const& feature) 00040 { 00041 geometry_ptr geom = feature.get_geometry(); 00042 if (geom && geom->hit_test(x_,y_,tol_)) 00043 return true; 00044 return false; 00045 } 00046 00047 private: 00048 double x_; 00049 double y_; 00050 double tol_; 00051 }; 00052 } 00053 00054 #endif // HIT_TEST_FILTER_HPP