From dca6d97a5288766e3e0da05dc5fdc98108fa7892 Mon Sep 17 00:00:00 2001 From: Thomas Gubler Date: Thu, 2 Jan 2014 14:18:02 +0100 Subject: create geofence class and start moving fence functionality to this class --- src/modules/navigator/geofence.cpp | 73 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 src/modules/navigator/geofence.cpp (limited to 'src/modules/navigator/geofence.cpp') diff --git a/src/modules/navigator/geofence.cpp b/src/modules/navigator/geofence.cpp new file mode 100644 index 000000000..bc5ef44f2 --- /dev/null +++ b/src/modules/navigator/geofence.cpp @@ -0,0 +1,73 @@ +/**************************************************************************** + * + * Copyright (c) 2013 PX4 Development Team. All rights reserved. + * Author: @author Jean Cyr + * @author Thomas Gubler + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ +/** + * @file geofence.cpp + * Provides functions for handling the geofence + */ +#include "geofence.h" + +#include + +Geofence::Geofence() +{ + +} + +Geofence::~Geofence() +{ + +} + + +bool Geofence::inside(const struct vehicle_global_position_s *vehicle) +{ + + /* Adaptation of algorithm originally presented as + * PNPOLY - Point Inclusion in Polygon Test + * W. Randolph Franklin (WRF) */ + + unsigned int i, j, vertices = _fence.count; + bool c = false; + double lat = vehicle->lat / 1e7d; + double lon = vehicle->lon / 1e7d; + + // skip vertex 0 (return point) + for (i = 0, j = vertices - 1; i < vertices; j = i++) + if (((_fence.vertices[i].lon) >= lon != (_fence.vertices[j].lon >= lon)) && + (lat <= (_fence.vertices[j].lat - _fence.vertices[i].lat) * (lon - _fence.vertices[i].lon) / + (_fence.vertices[j].lon - _fence.vertices[i].lon) + _fence.vertices[i].lat)) + c = !c; + return c; +} -- cgit v1.2.3