libs/agg/agg_path_storage.h

707         unsigned arrange_polygon_orientation(unsigned start, path_flags_e orientation);
710         void     invert_polygon(unsigned start);
800         unsigned perceive_polygon_orientation(unsigned start, unsigned end);
801         void     invert_polygon(unsigned start, unsigned end);
1176     unsigned path_base<VC>::perceive_polygon_orientation(unsigned start,
1181         unsigned np = end - start;
1187             m_vertices.vertex(start + i,            &x1, &y1);
1188             m_vertices.vertex(start + (i + 1) % np, &x2, &y2);
1197     void path_base<VC>::invert_polygon(unsigned start, unsigned end)
1200         unsigned tmp_cmd = m_vertices.command(start);
1205         for(i = start; i < end; i++)
1214         while(end > start)
1216             m_vertices.swap_vertices(start++, end--);
1222     void path_base<VC>::invert_polygon(unsigned start)
1225         while(start < m_vertices.total_vertices() &&
1226               !is_vertex(m_vertices.command(start))) ++start;
1229         while(start+1 < m_vertices.total_vertices() &&
1230               is_move_to(m_vertices.command(start)) &&
1231               is_move_to(m_vertices.command(start+1))) ++start;
1234         unsigned end = start + 1;
1238         invert_polygon(start, end);
1243     unsigned path_base<VC>::arrange_polygon_orientation(unsigned start,
1246         if(orientation == path_flags_none) return start;
1249         while(start < m_vertices.total_vertices() &&
1250               !is_vertex(m_vertices.command(start))) ++start;
1253         while(start+1 < m_vertices.total_vertices() &&
1254               is_move_to(m_vertices.command(start)) &&
1255               is_move_to(m_vertices.command(start+1))) ++start;
1258         unsigned end = start + 1;
1262         if(end - start > 2)
1264             if(perceive_polygon_orientation(start, end) != unsigned(orientation))
1267                 invert_polygon(start, end);
1282     unsigned path_base<VC>::arrange_orientations(unsigned start,
1287             while(start < m_vertices.total_vertices())
1289                 start = arrange_polygon_orientation(start, orientation);
1290                 if(is_stop(m_vertices.command(start)))
1292                     ++start;
1297         return start;
1307             unsigned start = 0;
1308             while(start < m_vertices.total_vertices())
1310                 start = arrange_orientations(start, orientation);