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author | Thomas Gubler <thomasgubler@gmail.com> | 2014-12-16 08:24:51 +0100 |
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committer | Thomas Gubler <thomasgubler@gmail.com> | 2014-12-16 08:24:51 +0100 |
commit | 9520983e08397c453af735d0ff0736cc007c2c45 (patch) | |
tree | 171df31a96bd6863c5dfd94242274177f9413dd2 /src/platforms/ros/geo.cpp | |
parent | 9980e4482146333340cc105b560bdbd26acb999f (diff) | |
download | px4-firmware-9520983e08397c453af735d0ff0736cc007c2c45.tar.gz px4-firmware-9520983e08397c453af735d0ff0736cc007c2c45.tar.bz2 px4-firmware-9520983e08397c453af735d0ff0736cc007c2c45.zip |
lots' of header juggling and small changes to make mc att control compile for NuttX and ROS
Diffstat (limited to 'src/platforms/ros/geo.cpp')
-rw-r--r-- | src/platforms/ros/geo.cpp | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/platforms/ros/geo.cpp b/src/platforms/ros/geo.cpp new file mode 100644 index 000000000..a7ee6fd84 --- /dev/null +++ b/src/platforms/ros/geo.cpp @@ -0,0 +1,165 @@ +/**************************************************************************** + * + * Copyright (c) 2012-2014 PX4 Development Team. All rights reserved. + * + * 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 geo.c + * + * Geo / math functions to perform geodesic calculations + * + * @author Thomas Gubler <thomasgubler@student.ethz.ch> + * @author Julian Oes <joes@student.ethz.ch> + * @author Lorenz Meier <lm@inf.ethz.ch> + * @author Anton Babushkin <anton.babushkin@me.com> + */ + +#include <geo/geo.h> +#include <px4.h> +#include <unistd.h> +#include <pthread.h> +#include <stdio.h> +#include <math.h> +#include <stdbool.h> +#include <string.h> +#include <float.h> + +__EXPORT float _wrap_pi(float bearing) +{ + /* value is inf or NaN */ + if (!isfinite(bearing)) { + return bearing; + } + + int c = 0; + while (bearing >= M_PI_F) { + bearing -= M_TWOPI_F; + + if (c++ > 3) { + return NAN; + } + } + + c = 0; + while (bearing < -M_PI_F) { + bearing += M_TWOPI_F; + + if (c++ > 3) { + return NAN; + } + } + + return bearing; +} + +__EXPORT float _wrap_2pi(float bearing) +{ + /* value is inf or NaN */ + if (!isfinite(bearing)) { + return bearing; + } + + int c = 0; + while (bearing >= M_TWOPI_F) { + bearing -= M_TWOPI_F; + + if (c++ > 3) { + return NAN; + } + } + + c = 0; + while (bearing < 0.0f) { + bearing += M_TWOPI_F; + + if (c++ > 3) { + return NAN; + } + } + + return bearing; +} + +__EXPORT float _wrap_180(float bearing) +{ + /* value is inf or NaN */ + if (!isfinite(bearing)) { + return bearing; + } + + int c = 0; + while (bearing >= 180.0f) { + bearing -= 360.0f; + + if (c++ > 3) { + return NAN; + } + } + + c = 0; + while (bearing < -180.0f) { + bearing += 360.0f; + + if (c++ > 3) { + return NAN; + } + } + + return bearing; +} + +__EXPORT float _wrap_360(float bearing) +{ + /* value is inf or NaN */ + if (!isfinite(bearing)) { + return bearing; + } + + int c = 0; + while (bearing >= 360.0f) { + bearing -= 360.0f; + + if (c++ > 3) { + return NAN; + } + } + + c = 0; + while (bearing < 0.0f) { + bearing += 360.0f; + + if (c++ > 3) { + return NAN; + } + } + + return bearing; +} |