ardupilot/libraries/AP_Math/examples/location/location.pde

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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
//
// Unit tests for the AP_Math polygon code
//
#include <FastSerial.h>
#include <AP_Common.h>
#include <AP_Math.h>
#ifdef DESKTOP_BUILD
// all of this is needed to build with SITL
#include <DataFlash.h>
#include <APM_RC.h>
#include <GCS_MAVLink.h>
#include <Arduino_Mega_ISR_Registry.h>
#include <AP_PeriodicProcess.h>
#include <AP_ADC.h>
#include <AP_Baro.h>
#include <AP_Compass.h>
#include <AP_GPS.h>
#include <Filter.h>
#include <SITL.h>
#include <I2C.h>
#include <SPI.h>
#include <AP_Declination.h>
Arduino_Mega_ISR_Registry isr_registry;
AP_Baro_BMP085_HIL barometer;
AP_Compass_HIL compass;
SITL sitl;
#endif
FastSerialPort(Serial, 0);
static const struct {
Vector2f wp1, wp2, location;
bool passed;
} test_points[] = {
{ Vector2f(-35.3647759314918, 149.16265692810987),
Vector2f(-35.36279922658029, 149.16352169591426),
Vector2f(-35.36214956969903, 149.16461410046492), true },
{ Vector2f(-35.36438601157189, 149.16613916088568),
Vector2f(-35.364432558610254, 149.16287313113048),
Vector2f(-35.36491510034746, 149.16365837225004), false },
{ Vector2f(0, 0),
Vector2f(0, 1),
Vector2f(0, 2), true },
{ Vector2f(0, 0),
Vector2f(0, 2),
Vector2f(0, 1), false },
{ Vector2f(0, 0),
Vector2f(1, 0),
Vector2f(2, 0), true },
{ Vector2f(0, 0),
Vector2f(2, 0),
Vector2f(1, 0), false },
{ Vector2f(0, 0),
Vector2f(-1, 1),
Vector2f(-2, 2), true },
};
#define ARRAY_LENGTH(x) (sizeof((x))/sizeof((x)[0]))
static struct Location location_from_point(Vector2f pt)
{
struct Location loc = {0};
loc.lat = pt.x * 1.0e7;
loc.lng = pt.y * 1.0e7;
return loc;
}
static void test_passed_waypoint(void)
{
Serial.println("waypoint tests starting");
for (uint8_t i=0; i<ARRAY_LENGTH(test_points); i++) {
struct Location loc = location_from_point(test_points[i].location);
struct Location wp1 = location_from_point(test_points[i].wp1);
struct Location wp2 = location_from_point(test_points[i].wp2);
if (location_passed_point(loc, wp1, wp2) != test_points[i].passed) {
Serial.printf("Failed waypoint test %u\n", (unsigned)i);
return;
}
}
Serial.println("waypoint tests OK");
}
static void test_one_offset(struct Location &loc,
float ofs_north, float ofs_east,
float dist, float bearing)
{
struct Location loc2;
float dist2, bearing2;
loc2 = loc;
uint32_t t1 = micros();
location_offset(&loc2, ofs_north, ofs_east);
Serial.printf("location_offset took %u usec\n",
micros() - t1);
dist2 = get_distance(&loc, &loc2);
bearing2 = get_bearing_cd(&loc, &loc2) * 0.01;
float brg_error = bearing2-bearing;
if (brg_error > 180) {
brg_error -= 360;
} else if (brg_error < -180) {
brg_error += 360;
}
if (abs(dist - dist2) > 1.0 ||
brg_error > 1.0) {
Serial.printf("Failed offset test brg_error=%f dist_error=%f\n",
brg_error, dist-dist2);
}
}
static const struct {
float ofs_north, ofs_east, distance, bearing;
} test_offsets[] = {
{ 1000, 1000, sqrt(2.0)*1000, 45 },
{ 1000, -1000, sqrt(2.0)*1000, -45 },
{ 1000, 0, 1000, 0 },
{ 0, 1000, 1000, 90 },
};
static void test_offset(void)
{
struct Location loc;
loc.lat = -35*1.0e7;
loc.lng = 149*1.0e7;
for (uint8_t i=0; i<ARRAY_LENGTH(test_offsets); i++) {
test_one_offset(loc,
test_offsets[i].ofs_north,
test_offsets[i].ofs_east,
test_offsets[i].distance,
test_offsets[i].bearing);
}
}
/*
polygon tests
*/
void setup(void)
{
Serial.begin(115200);
test_passed_waypoint();
test_offset();
}
void
loop(void)
{
}