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pxmlw6n2f/Gazebo_Distributed_TCP/gazebo/common/SphericalCoordinates_TEST.cc

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/*
* Copyright (C) 2012 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <gtest/gtest.h>
#include "gazebo/common/Console.hh"
#include "gazebo/common/SphericalCoordinates.hh"
#include "test/util.hh"
using namespace gazebo;
class SphericalCoordinatesTest : public gazebo::testing::AutoLogFixture { };
//////////////////////////////////////////////////
// Test different constructors, default parameters
TEST_F(SphericalCoordinatesTest, Constructor)
{
// Default surface type
common::SphericalCoordinates::SurfaceType st =
common::SphericalCoordinates::EARTH_WGS84;
// No arguments, default parameters
{
common::SphericalCoordinates sc;
EXPECT_EQ(sc.GetSurfaceType(), st);
EXPECT_EQ(sc.LatitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.LongitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.HeadingOffset(), ignition::math::Angle());
EXPECT_NEAR(sc.GetElevationReference(), 0.0, 1e-6);
}
// SurfaceType argument, default parameters
{
common::SphericalCoordinates sc(st);
EXPECT_EQ(sc.GetSurfaceType(), st);
EXPECT_EQ(sc.LatitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.LongitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.HeadingOffset(), ignition::math::Angle());
EXPECT_NEAR(sc.GetElevationReference(), 0.0, 1e-6);
}
// All arguments
{
ignition::math::Angle lat(0.3), lon(-1.2), heading(0.5);
double elev = 354.1;
common::SphericalCoordinates sc(st, lat, lon, elev, heading);
EXPECT_EQ(sc.GetSurfaceType(), st);
EXPECT_EQ(sc.LatitudeReference(), lat);
EXPECT_EQ(sc.LongitudeReference(), lon);
EXPECT_EQ(sc.HeadingOffset(), heading);
EXPECT_NEAR(sc.GetElevationReference(), elev, 1e-6);
}
}
//////////////////////////////////////////////////
// SurfaceType Convert function
TEST_F(SphericalCoordinatesTest, Convert)
{
// Default surface type
common::SphericalCoordinates::SurfaceType st =
common::SphericalCoordinates::EARTH_WGS84;
EXPECT_EQ(common::SphericalCoordinates::Convert("EARTH_WGS84"), st);
}
//////////////////////////////////////////////////
// Test Set functions
TEST_F(SphericalCoordinatesTest, SetFunctions)
{
// Default surface type
common::SphericalCoordinates::SurfaceType st =
common::SphericalCoordinates::EARTH_WGS84;
// Default parameters
common::SphericalCoordinates sc;
EXPECT_EQ(sc.GetSurfaceType(), st);
EXPECT_EQ(sc.LatitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.LongitudeReference(), ignition::math::Angle());
EXPECT_EQ(sc.HeadingOffset(), ignition::math::Angle());
EXPECT_NEAR(sc.GetElevationReference(), 0.0, 1e-6);
{
ignition::math::Angle lat(0.3), lon(-1.2), heading(0.5);
double elev = 354.1;
sc.SetSurfaceType(st);
sc.SetLatitudeReference(lat);
sc.SetLongitudeReference(lon);
sc.SetHeadingOffset(heading);
sc.SetElevationReference(elev);
EXPECT_EQ(sc.GetSurfaceType(), st);
EXPECT_EQ(sc.LatitudeReference(), lat);
EXPECT_EQ(sc.LongitudeReference(), lon);
EXPECT_EQ(sc.HeadingOffset(), heading);
EXPECT_NEAR(sc.GetElevationReference(), elev, 1e-6);
}
}
//////////////////////////////////////////////////
// Test coordinate transformations
TEST_F(SphericalCoordinatesTest, CoordinateTransforms)
{
// Default surface type
common::SphericalCoordinates::SurfaceType st =
common::SphericalCoordinates::EARTH_WGS84;
{
// Parameters
ignition::math::Angle lat(0.3), lon(-1.2),
heading(ignition::math::Angle::HalfPi);
double elev = 354.1;
common::SphericalCoordinates sc(st, lat, lon, elev, heading);
// Check GlobalFromLocal with heading offset of 90 degrees
{
// local frame
ignition::math::Vector3d xyz;
// east, north, up
ignition::math::Vector3d enu;
xyz.Set(1, 0, 0);
enu = sc.GlobalFromLocal(xyz);
EXPECT_NEAR(enu.Y(), xyz.X(), 1e-6);
EXPECT_NEAR(enu.X(), -xyz.Y(), 1e-6);
EXPECT_EQ(xyz, sc.LocalFromGlobal(enu));
xyz.Set(0, 1, 0);
enu = sc.GlobalFromLocal(xyz);
EXPECT_NEAR(enu.Y(), xyz.X(), 1e-6);
EXPECT_NEAR(enu.X(), -xyz.Y(), 1e-6);
EXPECT_EQ(xyz, sc.LocalFromGlobal(enu));
xyz.Set(1, -1, 0);
enu = sc.GlobalFromLocal(xyz);
EXPECT_NEAR(enu.Y(), xyz.X(), 1e-6);
EXPECT_NEAR(enu.X(), -xyz.Y(), 1e-6);
EXPECT_EQ(xyz, sc.LocalFromGlobal(enu));
xyz.Set(2243.52334, 556.35, 435.6553);
enu = sc.GlobalFromLocal(xyz);
EXPECT_NEAR(enu.Y(), xyz.X(), 1e-6);
EXPECT_NEAR(enu.X(), -xyz.Y(), 1e-6);
EXPECT_EQ(xyz, sc.LocalFromGlobal(enu));
}
// Check SphericalFromLocal
{
// local frame
ignition::math::Vector3d xyz;
// spherical coordinates
ignition::math::Vector3d sph;
// No offset
xyz.Set(0, 0, 0);
sph = sc.SphericalFromLocal(xyz);
// latitude
EXPECT_NEAR(sph.X(), lat.Degree(), 1e-6);
// longitude
EXPECT_NEAR(sph.Y(), lon.Degree(), 1e-6);
// elevation
EXPECT_NEAR(sph.Z(), elev, 1e-6);
// 200 km offset in x (pi/2 heading offset means North). We use
// SphericalFromLocal, which means that xyz is a linear movement on
// a plane (not along the curvature of Earth). This will result in
// a large height offset.
xyz.Set(2e5, 0, 0);
sph = sc.SphericalFromLocal(xyz);
// increase in latitude about 1.8 degrees
EXPECT_NEAR(sph.X(), lat.Degree() + 1.8, 0.008);
// no change in longitude
EXPECT_NEAR(sph.Z(), 3507.024791, 1e-6);
ignition::math::Vector3d xyz2 = sc.LocalFromSpherical(sph);
EXPECT_EQ(xyz, xyz2);
}
// Check position projection
{
// WGS84 coordinate obtained from online mapping software
// > gdaltransform -s_srs WGS84 -t_srs EPSG:4978
// > latitude longitude altitude
// > X Y Z
ignition::math::Vector3d tmp;
ignition::math::Vector3d osrf_s(37.3877349, -122.0651166, 32.0);
ignition::math::Vector3d osrf_e(
-2693701.91434394, -4299942.14687992, 3851691.0393571);
ignition::math::Vector3d goog_s(37.4216719, -122.0821853, 30.0);
ignition::math::Vector3d goog_e(
-2693766.71906146, -4297199.59926038, 3854681.81878812);
// Local tangent plane coordinates (ENU = GLOBAL) coordinates of
// Google when OSRF is taken as the origin:
// > proj +ellps=WGS84 +proj=tmerc
// +lat_0=37.3877349 +lon_0=-122.0651166 +k=1 +x_0=0 +y_0=0
// > -122.0821853 37.4216719 (LON,LAT)
// > -1510.88 3766.64 (EAST,NORTH)
ignition::math::Vector3d vec(-1510.88, 3766.64, -3.29);
// Convert degrees to radians
osrf_s.X() *= 0.0174532925;
osrf_s.Y() *= 0.0174532925;
// Set the ORIGIN to be the Open Source Robotics Foundation
common::SphericalCoordinates sc2(st, ignition::math::Angle(osrf_s.X()),
ignition::math::Angle(osrf_s.Y()), osrf_s.Z(), 0.0);
// Check that SPHERICAL -> ECEF works
tmp = sc2.PositionTransform(osrf_s,
common::SphericalCoordinates::SPHERICAL,
common::SphericalCoordinates::ECEF);
EXPECT_NEAR(tmp.X(), osrf_e.X(), 8e-2);
EXPECT_NEAR(tmp.Y(), osrf_e.Y(), 8e-2);
EXPECT_NEAR(tmp.Z(), osrf_e.Z(), 1e-2);
// Check that ECEF -> SPHERICAL works
tmp = sc2.PositionTransform(tmp,
common::SphericalCoordinates::ECEF,
common::SphericalCoordinates::SPHERICAL);
EXPECT_NEAR(tmp.X(), osrf_s.X(), 1e-2);
EXPECT_NEAR(tmp.Y(), osrf_s.Y(), 1e-2);
EXPECT_NEAR(tmp.Z(), osrf_s.Z(), 1e-2);
// Check that SPHERICAL -> LOCAL works
tmp = sc2.LocalFromSpherical(goog_s);
EXPECT_NEAR(tmp.X(), vec.X(), 8e-2);
EXPECT_NEAR(tmp.Y(), vec.Y(), 8e-2);
EXPECT_NEAR(tmp.Z(), vec.Z(), 1e-2);
// Check that SPHERICAL -> LOCAL -> SPHERICAL works
tmp = sc2.SphericalFromLocal(tmp);
EXPECT_NEAR(tmp.X(), goog_s.X(), 8e-2);
EXPECT_NEAR(tmp.Y(), goog_s.Y(), 8e-2);
EXPECT_NEAR(tmp.Z(), goog_s.Z(), 1e-2);
}
}
}
//////////////////////////////////////////////////
// Test distance
TEST_F(SphericalCoordinatesTest, Distance)
{
ignition::math::Angle latA, longA, latB, longB;
latA.Degree(46.250944);
longA.Degree(-122.249972);
latB.Degree(46.124953);
longB.Degree(-122.251683);
double d = common::SphericalCoordinates::Distance(latA, longA, latB, longB);
EXPECT_NEAR(14002, d, 20);
}
/////////////////////////////////////////////////
int main(int argc, char **argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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