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114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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//
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// Boost.Index - example
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//
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// Copyright 2011 Adam Wulkiewicz.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <gl/glut.h>
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#include <boost/geometry/extensions/index/rtree/rtree.hpp>
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#include <boost/geometry/extensions/index/rtree/visitors/gl_draw.hpp>
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#include <boost/geometry/extensions/index/rtree/visitors/print.hpp>
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#include <boost/geometry/extensions/index/rtree/visitors/are_boxes_ok.hpp>
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typedef boost::geometry::model::point<float, 2, boost::geometry::cs::cartesian> P;
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typedef boost::geometry::model::box<P> B;
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//boost::geometry::index::rtree<B> t(2, 1);
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boost::geometry::index::rtree<B, boost::geometry::index::default_parameter, boost::geometry::index::quadratic_tag> t(4, 2);
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std::vector<B> vect;
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void render_scene(void)
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{
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boost::geometry::index::gl_draw(t);
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}
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void resize(int w, int h)
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{
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if ( h == 0 )
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h = 1;
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float ratio = float(w) / h;
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glViewport(0, 0, w, h);
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gluPerspective(45, ratio, 1, 1000);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gluLookAt(
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150.0f, 150.0f, 150.0f,
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50.0f, 50.0f, -1.0f,
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0.0f, 1.0f, 0.0f);
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}
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void mouse(int button, int state, int x, int y)
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{
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if ( button == GLUT_LEFT_BUTTON && state == GLUT_DOWN )
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{
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float x = ( rand() % 100 );
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float y = ( rand() % 100 );
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float w = ( rand() % 2 ) + 1;
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float h = ( rand() % 2 ) + 1;
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B b(P(x - w, y - h),P(x + w, y + h));
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boost::geometry::index::insert(t, b);
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vect.push_back(b);
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/*std::cout << t << "\n\n";
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std::cout << "inserted: ";
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boost::geometry::index::detail::rtree::visitors::detail::print_indexable(std::cout, b);
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std::cout << '\n';
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std::cout << ( boost::geometry::index::are_boxes_ok(t) ? "boxes OK" : "WRONG BOXES!" );
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std::cout << "\n\n\n";*/
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glutPostRedisplay();
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}
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else if ( button == GLUT_RIGHT_BUTTON && state == GLUT_DOWN )
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{
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if ( vect.empty() )
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return;
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size_t i = rand() % vect.size();
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B b = vect[i];
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boost::geometry::index::remove(t, b);
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vect.erase(vect.begin() + i);
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/*std::cout << '\n' << t << "\n\n";
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std::cout << "removed: ";
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boost::geometry::index::detail::rtree::visitors::detail::print_indexable(std::cout, b);
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std::cout << '\n';
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std::cout << ( boost::geometry::index::are_boxes_ok(t) ? "boxes OK" : "WRONG BOXES!" );
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std::cout << "\n\n\n";*/
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glutPostRedisplay();
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}
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}
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int main(int argc, char **argv)
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{
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_DEPTH | GLUT_SINGLE | GLUT_RGBA);
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glutInitWindowPosition(100,100);
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glutInitWindowSize(800, 600);
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glutCreateWindow("Mouse click to insert new value");
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glutDisplayFunc(render_scene);
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glutReshapeFunc(resize);
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glutMouseFunc(mouse);
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std::cout << "Mouse click to insert new value";
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glutMainLoop();
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return 0;
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}
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