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test-turtle.c
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/*
* Copyright (C) 2017 Université Clermont Auvergne, CNRS/IN2P3, LPC
* Author: Valentin NIESS ([email protected])
*
* Topographic Utilities for tRansporting parTicules over Long rangEs (TURTLE)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
/*
* Unit tests for the Turtle C library
*/
/* C89 standard library */
#include <float.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* POSIX regular expressions */
#include <regex.h>
/* The Check library */
#include "check.h"
/* Endianess utilities */
#include <arpa/inet.h>
#ifndef TURTLE_NO_TIFF
/* TIFF library */
#include <tiffio.h>
#endif
/* The TURTLE library */
#include "turtle.h"
/* Opaque TURTLE data */
#include "../src/turtle/list.h"
#include "../src/turtle/stack.h"
#include "../src/turtle/stepper.h"
/* Shortcut(s) for checking internal type(s) */
#define CHECK_LIST_INIT(L) \
ck_assert_int_eq(L.size, 0); \
ck_assert_ptr_eq(L.head, NULL); \
ck_assert_ptr_eq(L.tail, NULL)
/* Buffer for redirecting error messages */
static char error_buffer[2048];
static void catch_error(enum turtle_return code, turtle_function_t * function,
const char * message)
{
sprintf(error_buffer, "%s\n", message);
}
static void setup_map_data(void)
{
/* Create a new map with a UTM projection */
#define DEFINE_MAP_META() \
const double x0 = 496000, y0 = 5067000, z0 = 0., z1 = 1000; \
const int nx = 201, ny = 201
DEFINE_MAP_META();
struct turtle_map * map;
struct turtle_map_info info = { nx, ny, { x0 - 1000, x0 + 1000 },
{ y0 - 1000, y0 + 1000 }, { z0, z1 } };
turtle_map_create(&map, &info, "UTM 31N");
/* Fill the map with some dummy data */
int i, k;
for (i = 0, k = 0; i < nx; i++) {
int j;
for (j = 0; j < ny; j++, k++) {
const double z = ((k % 2) == 0) ? z0 : z1;
turtle_map_fill(map, i, j, z);
}
}
/* Dump the map to disk and destroy it in memory */
#define MAP_PATH "tests/map.png"
const char * path = MAP_PATH;
turtle_map_dump(map, path);
turtle_map_destroy(&map);
}
static void setup_stack_data(void)
{
#define STACK_PATH "tests/topography"
/* Create some data tiles for the global stack */
int k;
for (k = 0; k < 4; k++) {
const int nx = 1201, ny = 1201;
double latitude0, latitude1;
if ((k % 2) == 0) {
latitude0 = 45;
latitude1 = 46;
} else {
latitude0 = 46;
latitude1 = 47;
}
double longitude0, longitude1;
if ((k / 2) == 0) {
longitude0 = 2;
longitude1 = 3;
} else {
longitude0 = 3;
longitude1 = 4;
}
struct turtle_map * map;
struct turtle_map_info info = { nx, ny,
{ longitude0, longitude1 }, { latitude0, latitude1 },
{ 0, 1 } };
turtle_map_create(&map, &info, NULL);
int i;
for (i = 0; i < nx; i++) {
int j;
for (j = 0; j < ny; j++) turtle_map_fill(map, i, j, 0);
}
if (k == 0)
turtle_map_dump(map, STACK_PATH "/45N_002E.png");
else if (k == 1)
turtle_map_dump(map, STACK_PATH "/46N_002E.png");
else if (k == 2)
turtle_map_dump(map, STACK_PATH "/45N_003E.png");
else
turtle_map_dump(map, STACK_PATH "/46N_003E.png");
turtle_map_destroy(&map);
}
}
static void setup_geoid_data(void)
{
#define GEOID_PATH "tests/geoid.png"
/* Create the geoid data */
const int nx = 361, ny = 181;
struct turtle_map * geoid;
struct turtle_map_info info = { nx, ny, { -180, 180 }, { -90, 90 },
{ -1, 1 } };
turtle_map_create(&geoid, &info, NULL);
int i;
for (i = 0; i < nx; i++) {
int j;
for (j = 0; j < ny; j++) turtle_map_fill(geoid, i, j, -1);
}
turtle_map_dump(geoid, GEOID_PATH);
turtle_map_destroy(&geoid);
}
static void setup_data(void)
{
setup_map_data();
setup_stack_data();
setup_geoid_data();
}
START_TEST (test_list)
{
struct turtle_list list = { 0 };
struct turtle_list_element * e0 = malloc(sizeof(*e0));
struct turtle_list_element * e1 = malloc(sizeof(*e1));
struct turtle_list_element * e2 = malloc(sizeof(*e2));
struct turtle_list_element * e3 = malloc(sizeof(*e3));
struct turtle_list_element * e4 = malloc(sizeof(*e4));
turtle_list_append_(&list, e0);
ck_assert_ptr_eq(list.head, e0);
ck_assert_ptr_eq(list.tail, e0);
ck_assert_ptr_eq(e0->previous, NULL);
ck_assert_ptr_eq(e0->next, NULL);
turtle_list_insert_(&list, e1, 0);
ck_assert_ptr_eq(list.head, e1);
ck_assert_ptr_eq(e1->next, e0);
ck_assert_ptr_eq(e1->previous, NULL);
ck_assert_ptr_eq(e0->previous, e1);
turtle_list_append_(&list, e2);
ck_assert_ptr_eq(list.tail, e2);
ck_assert_ptr_eq(e2->previous, e0);
ck_assert_ptr_eq(e0->next, e2);
ck_assert_ptr_eq(e2->next, NULL);
turtle_list_insert_(&list, e3, 1);
ck_assert_ptr_eq(list.head, e1);
ck_assert_ptr_eq(e0->previous, e3);
ck_assert_ptr_eq(e3->previous, e1);
ck_assert_ptr_eq(e3->next, e0);
ck_assert_ptr_eq(e1->next, e3);
turtle_list_insert_(&list, e4, 5);
ck_assert_ptr_eq(list.tail, e4);
ck_assert_ptr_eq(e4->previous, e2);
ck_assert_ptr_eq(e4->next, NULL);
ck_assert_ptr_eq(e2->next, e4);
ck_assert_int_eq(list.size, 5);
turtle_list_remove_(&list, e1);
free(e1);
ck_assert_ptr_eq(e3->previous, NULL);
ck_assert_ptr_eq(e3->next, e0);
turtle_list_remove_(&list, e4);
free(e4);
ck_assert_ptr_eq(e3->previous, NULL);
ck_assert_ptr_eq(e3->next, e0);
turtle_list_remove_(&list, e0);
free(e0);
ck_assert_int_eq(list.size, 2);
ck_assert_ptr_eq(e3->previous, NULL);
ck_assert_ptr_eq(e3->next, e2);
ck_assert_ptr_eq(e2->previous, e3);
ck_assert_ptr_eq(e2->next, NULL);
struct turtle_list_element * e = turtle_list_pop_(&list);
ck_assert_ptr_eq(e, e2);
ck_assert_ptr_eq(e3->next, NULL);
ck_assert_int_eq(list.size, 1);
ck_assert_ptr_eq(list.head, e3);
ck_assert_ptr_eq(list.tail, e3);
e = turtle_list_pop_(&list);
ck_assert_ptr_eq(e, e3);
ck_assert_ptr_eq(list.head, NULL);
ck_assert_ptr_eq(list.tail, NULL);
ck_assert_int_eq(list.size, 0);
turtle_list_append_(&list, e2);
turtle_list_append_(&list, e3);
turtle_list_clear_(&list);
ck_assert_ptr_eq(list.head, NULL);
ck_assert_ptr_eq(list.tail, NULL);
ck_assert_int_eq(list.size, 0);
}
END_TEST
START_TEST (test_stepper_layer)
{
struct turtle_map * map, * geoid;
struct turtle_stack * stack;
struct turtle_stepper * stepper;
turtle_map_load(&map, MAP_PATH);
turtle_map_load(&geoid, GEOID_PATH);
turtle_stack_create(&stack, STACK_PATH, 0, NULL, NULL);
/* Check the initialisation */
turtle_stepper_create(&stepper);
CHECK_LIST_INIT(stepper->data);
CHECK_LIST_INIT(stepper->transforms);
CHECK_LIST_INIT(stepper->layers);
/* Check the building of geometry layers */
const double latitude0 = 45.756546;
const double longitude0 = 2.9485671;
const double offset[2] = { -0.5, 0. };
double values[3][2];
int i;
for (i = 0; i < 2; i++) {
turtle_stepper_add_layer(stepper);
turtle_stepper_add_flat(stepper, offset[i]);
turtle_stepper_add_stack(stepper, stack, offset[i]);
turtle_stepper_add_map(stepper, map, offset[i]);
struct turtle_stepper_layer * layer = stepper->layers.tail;
ck_assert_int_eq(layer->meta.size, 3);
double position[3], altitude;
int index[2];
turtle_stepper_position(stepper, latitude0, longitude0, -0.25,
i, position, index);
ck_assert_int_eq(index[0], 0);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, NULL, NULL, index);
if (i) {
ck_assert_int_eq(index[0], i);
ck_assert_int_eq(index[1], 0);
} else {
ck_assert_int_eq(index[0], 0);
}
values[0][i] = altitude;
turtle_stepper_position(stepper, 45.5, 2.5, -0.25, i,
position, index);
ck_assert_int_eq(index[0], 1);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, NULL, NULL, index);
ck_assert_int_eq(index[0], i);
ck_assert_int_eq(index[1], 1);
values[1][i] = altitude;
turtle_stepper_position(stepper, 40., 10., -0.25, i,
position, index);
ck_assert_int_eq(index[0], 2);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, NULL, NULL, index);
ck_assert_int_eq(index[0], i);
ck_assert_int_eq(index[1], 2);
values[2][i] = altitude;
}
ck_assert_int_eq(stepper->data.size, 3);
ck_assert_int_eq(stepper->transforms.size, 2);
ck_assert_int_eq(stepper->layers.size, 2);
/* Check that the elevation values are consistent */
for (i = 0; i < 3; i++) {
ck_assert_double_eq_tol(values[i][0] - offset[0],
values[i][1] - offset[1], FLT_EPSILON);
}
/* Check the initial stepping for a top position */
const double slope = turtle_stepper_slope_get(stepper);
double position[3], altitude, elevation[2], step;
int index[2];
turtle_stepper_position(stepper, latitude0, longitude0, 0.5, 1,
position, index);
ck_assert_int_eq(index[0], 0);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, elevation, &step, index);
ck_assert_int_eq(index[0], 2);
ck_assert_double_eq_tol(
altitude - 0.5, values[0][1] + 0.25, FLT_EPSILON);
ck_assert_double_eq_tol(
elevation[0], values[0][1] + 0.25, FLT_EPSILON);
ck_assert_double_eq(elevation[1], DBL_MAX);
ck_assert_double_eq_tol(step, 0.5 * slope, FLT_EPSILON);
/* Check the initial stepping for a middle position */
turtle_stepper_position(stepper, latitude0, longitude0, -0.1, 1,
position, index);
ck_assert_int_eq(index[0], 0);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, elevation, &step, index);
ck_assert_int_eq(index[0], 1);
ck_assert_int_eq(index[1], 0);
ck_assert_double_eq_tol(
altitude + 0.1, values[0][1] + 0.25, FLT_EPSILON);
ck_assert_double_eq_tol(
elevation[0], values[0][0] + 0.25, FLT_EPSILON);
ck_assert_double_eq_tol(
elevation[1], values[0][1] + 0.25, FLT_EPSILON);
ck_assert_double_eq_tol(step, 0.1 * slope, FLT_EPSILON);
/* Check the initial stepping for a bottom position */
turtle_stepper_position(stepper, latitude0, longitude0, -0.5, 0,
position, index);
ck_assert_int_eq(index[0], 0);
turtle_stepper_step(stepper, position, NULL, NULL, NULL,
&altitude, elevation, &step, index);
ck_assert_int_eq(index[0], 0);
ck_assert_int_eq(index[1], 0);
ck_assert_double_eq_tol(
altitude + 0.5, values[0][0] + 0.25, FLT_EPSILON);
ck_assert_double_eq_tol(
elevation[1], values[0][0] + 0.25, FLT_EPSILON);
ck_assert_double_eq(elevation[0], -DBL_MAX);
ck_assert_double_eq_tol(step, 0.5 * slope, FLT_EPSILON);
/* Check the stepping when intersecting a layer */
double direction[3];
turtle_stepper_position(stepper, latitude0, longitude0, -0.1, 1,
position, index);
turtle_ecef_from_horizontal(latitude0, longitude0, 0., 90., direction);
turtle_stepper_slope_set(stepper, 2.);
turtle_stepper_step(stepper, position, direction, NULL, NULL,
&altitude, elevation, &step, index);
ck_assert_int_eq(index[0], 2);
ck_assert_int_eq(index[1], 0);
ck_assert_double_eq_tol(altitude, values[0][1] + 0.25, 1E-05);
ck_assert_double_eq_tol(step, 0.1, 1E-05);
/* Check the stepping from the boundary */
const double resolution = turtle_stepper_resolution_get(stepper);
turtle_stepper_step(stepper, position, direction, NULL, NULL,
&altitude, elevation, &step, index);
ck_assert_int_eq(index[0], 2);
ck_assert_int_eq(index[1], 0);
ck_assert_double_eq_tol(
altitude - resolution, values[0][1] + 0.25, 1E-05);
ck_assert_double_eq_tol(step, resolution, 1E-05);
/* Clean and exit */
turtle_stepper_destroy(&stepper);
turtle_stack_destroy(&stack);
turtle_map_destroy(&geoid);
turtle_map_destroy(&map);
}
END_TEST
START_TEST (test_map)
{
DEFINE_MAP_META();
/* Load the map */
struct turtle_map * map;
turtle_map_load(&map, MAP_PATH);
/* Check the map meta data */
struct turtle_map_info info = { 0 };
const char * projection;
turtle_map_meta(map, &info, &projection);
ck_assert_int_eq(info.nx, nx);
ck_assert_int_eq(info.ny, ny);
ck_assert_double_eq(info.x[0], x0 - 1000);
ck_assert_double_eq(info.x[1], x0 + 1000);
ck_assert_double_eq(info.y[0], y0 - 1000);
ck_assert_double_eq(info.y[1], y0 + 1000);
ck_assert_double_eq(info.z[0], z0);
ck_assert_double_eq(info.z[1], z1);
ck_assert_str_eq(projection, "UTM 31N");
/* Check the access to the map data */
double z;
int i, k;
for (i = 0, k = 0; i < nx; i++) {
int j;
for (j = 0; j < ny; j++, k++) {
turtle_map_node(map, i, j, NULL, NULL, &z);
const double zz = ((k % 2) == 0) ? z0 : z1;
ck_assert_double_eq(z, zz);
}
}
/* Check the interpolation */
turtle_map_elevation(map, x0, y0, &z, NULL);
turtle_map_elevation(map, x0 + 0.5, y0 + 0.5, &z, NULL);
int inside;
turtle_map_elevation(map, x0 - 1000.5, y0, &z, &inside);
ck_assert_int_eq(inside, 0);
/* Re-fill the map with some dummy data */
int ix;
for (ix = 0; ix < nx; ix++) {
int iy;
for (iy = 0; iy < ny; iy++) {
/* Get the node coordinates */
double x, y;
turtle_map_node(map, ix, iy, &x, &y, NULL);
/* Fill the elevation */
x -= x0;
y -= y0;
const double r = sqrt(x * x + y * y);
const double z = (r >= 1E+03) ? 0. : 1E+03 - r;
turtle_map_fill(map, ix, iy, z);
}
}
turtle_map_destroy(&map);
/* Catch errors and try loading some wrong maps */
turtle_error_handler_t * handler = turtle_error_handler_get();
turtle_error_handler_set(&catch_error);
regex_t regex;
enum turtle_return rc;
rc = turtle_map_load(&map, "nothing");
ck_assert_int_eq(rc, TURTLE_RETURN_BAD_EXTENSION);
regcomp(®ex, "{ turtle_map_load \\[#[0-9]*\\], "
"src/turtle/io.c:[0-9]* } no valid format for file `nothing'", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
rc = turtle_map_load(&map, "nothing.png");
ck_assert_int_eq(rc, TURTLE_RETURN_PATH_ERROR);
regcomp(®ex, "{ turtle_map_load \\[#[0-9]*\\], "
"src/turtle/io/png16.c:[0-9]* } could not open file `nothing.png'",
0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
rc = turtle_map_create(&map, &info, "nothing");
ck_assert_int_eq(rc, TURTLE_RETURN_BAD_PROJECTION);
regcomp(®ex, "{ turtle_map_create \\[#[0-9]*\\], "
"src/turtle/projection.c:[0-9]* } invalid projection `nothing'", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
info.nx = 0;
rc = turtle_map_create(&map, &info, projection);
ck_assert_int_eq(rc, TURTLE_RETURN_DOMAIN_ERROR);
regcomp(®ex, "{ turtle_map_create \\[#[0-9]*\\], "
"src/turtle/map.c:[0-9]* } invalid input parameter(s)", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
/* Restore the error handler */
turtle_error_handler_set(handler);
}
END_TEST
START_TEST (test_projection)
{
/* Check the no projection case */
struct turtle_map * map;
struct turtle_map_info info = { 11, 11, { 45, 46 }, { 3, 4 },
{ -1, 1 } };
turtle_map_create(&map, &info, NULL);
ck_assert_ptr_eq(turtle_map_projection(map), NULL);
turtle_map_destroy(&map);
/* Load the UTM projection from the map */
turtle_map_destroy(&map);
turtle_map_load(&map, MAP_PATH);
const struct turtle_projection * utm = turtle_map_projection(map);
ck_assert_str_eq(turtle_projection_name(utm), "UTM 31N");
/* Create a new empty projection */
struct turtle_projection * projection;
turtle_projection_create(&projection, NULL);
ck_assert_ptr_eq(turtle_projection_name(projection), NULL);
/* Loop over known projections */
const char * tag[] = { "Lambert I", "Lambert II", "Lambert IIe",
"Lambert III", "Lambert IV", "Lambert 93", "UTM 31N",
"UTM 3.0N", "UTM 31S", "UTM 3.0S" };
int i;
for (i = 0; i < sizeof(tag) / sizeof(*tag); i++) {
/* Reconfigure the projection object */
turtle_projection_configure(projection, tag[i]);
ck_assert_str_eq(turtle_projection_name(projection), tag[i]);
/* Project for and back */
const double latitude = 45.5, longitude = 3.5;
double x, y, la, lo;
turtle_projection_project(
projection, latitude, longitude, &x, &y);
turtle_projection_unproject(projection, x, y, &la, &lo);
ck_assert_double_eq_tol(la, latitude, 1E-08);
ck_assert_double_eq_tol(lo, longitude, 1E-08);
}
/* Clean the memory */
turtle_map_destroy(&map);
turtle_projection_destroy(&projection);
/* Catch errors and try creating some wrong projection */
turtle_error_handler_t * handler = turtle_error_handler_get();
turtle_error_handler_set(&catch_error);
enum turtle_return rc = turtle_projection_create(
&projection, "nothing");
ck_assert_int_eq(rc, TURTLE_RETURN_BAD_PROJECTION);
regex_t regex;
regcomp(®ex, "{ turtle_projection_create "
"\\[#[0-9]*\\], src/turtle/projection.c:[0-9]* } "
"invalid projection `nothing'", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
/* Restore the error handler */
turtle_error_handler_set(handler);
}
END_TEST
START_TEST (test_ecef)
{
/* Convert a position for and back */
const double latitude = 45.5, longitude = 3.5, altitude = 1000.;
double position[3];
turtle_ecef_from_geodetic(latitude, longitude, altitude, position);
double lla[3];
turtle_ecef_to_geodetic(position, lla, lla + 1, lla + 2);
ck_assert_double_eq_tol(lla[0], latitude, 1E-08);
ck_assert_double_eq_tol(lla[1], longitude, 1E-08);
ck_assert_double_eq_tol(lla[2], altitude, 1E-08);
/* Convert a direction for and back */
const double azimuth = 60., elevation = 30.;
double direction[3];
turtle_ecef_from_horizontal(
latitude, longitude, azimuth, elevation, direction);
double angle[2];
turtle_ecef_to_horizontal(
latitude, longitude, direction, angle, angle + 1);
ck_assert_double_eq_tol(angle[0], azimuth, 1E-08);
ck_assert_double_eq_tol(angle[1], elevation, 1E-08);
/* Check the boundary cases */
turtle_ecef_from_geodetic(90, 0, altitude, position);
turtle_ecef_to_geodetic(position, lla, lla + 1, lla + 2);
ck_assert_double_eq(lla[0], 90);
ck_assert_double_eq(lla[1], 0);
ck_assert_double_eq(lla[2], altitude);
turtle_ecef_from_geodetic(-90, 0, altitude, position);
turtle_ecef_to_geodetic(position, lla, lla + 1, lla + 2);
ck_assert_double_eq(lla[0], -90);
ck_assert_double_eq(lla[1], 0);
ck_assert_double_eq(lla[2], altitude);
turtle_ecef_from_geodetic(0, 90, altitude, position);
turtle_ecef_to_geodetic(position, lla, lla + 1, lla + 2);
ck_assert_double_eq(lla[0], 0);
ck_assert_double_eq(lla[1], 90);
ck_assert_double_eq(lla[2], altitude);
}
END_TEST
START_TEST (test_stack)
{
/* Create the stack */
struct turtle_stack * stack;
turtle_stack_create(&stack, STACK_PATH, 3, NULL, NULL);
ck_assert_int_eq(stack->tiles.size, 0);
/* Check some elevation values */
double z;
turtle_stack_elevation(stack, 45.5, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 1);
turtle_stack_elevation(stack, 45.0, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 1);
turtle_stack_elevation(stack, 46.5, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 2);
turtle_stack_elevation(stack, 45.0, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 2);
int inside;
turtle_stack_elevation(stack, 45.5, 4.5, &z, &inside);
ck_assert_int_eq(inside, 0);
ck_assert_int_eq(stack->tiles.size, 2);
turtle_stack_elevation(stack, 45.5, 2.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 3);
turtle_stack_elevation(stack, 46.5, 2.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 3);
/* Check the clear and load functions */
turtle_stack_clear(stack);
ck_assert_int_eq(stack->tiles.size, 0);
turtle_stack_elevation(stack, 45.5, 2.5, &z, NULL);
ck_assert_double_eq(z, 0);
ck_assert_int_eq(stack->tiles.size, 1);
turtle_stack_load(stack);
ck_assert_int_eq(stack->tiles.size, 3);
turtle_stack_clear(stack);
ck_assert_int_eq(stack->tiles.size, 0);
turtle_stack_load(stack);
ck_assert_int_eq(stack->tiles.size, 3);
turtle_stack_load(stack);
ck_assert_int_eq(stack->tiles.size, 3);
turtle_stack_destroy(&stack);
turtle_stack_create(&stack, STACK_PATH, 0, NULL, NULL);
turtle_stack_load(stack);
ck_assert_int_eq(stack->tiles.size, 4);
/* Clean the memory */
turtle_stack_destroy(&stack);
}
END_TEST
/* Dummy lock / unlock emulation */
static int nothing(void) { return 0; }
START_TEST (test_client)
{
/* Create a stack and its client */
struct turtle_stack * stack;
turtle_stack_create(&stack, STACK_PATH, 1, ¬hing, ¬hing);
struct turtle_client * client;
turtle_client_create(&client, stack);
/* Check some elevation value */
double z;
turtle_client_elevation(client, 45.5, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
turtle_client_elevation(client, 45.0, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
turtle_client_elevation(client, 46.5, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
turtle_client_elevation(client, 45.0, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
int inside;
turtle_client_elevation(client, 45.5, 4.5, &z, &inside);
ck_assert_int_eq(inside, 0);
turtle_client_elevation(client, 45.5, 4.5, &z, &inside);
ck_assert_int_eq(inside, 0);
turtle_client_elevation(client, 45.5, 2.5, &z, NULL);
ck_assert_double_eq(z, 0);
turtle_client_elevation(client, 46.5, 2.5, &z, NULL);
ck_assert_double_eq(z, 0);
/* Check the clear function */
turtle_client_clear(client);
turtle_client_elevation(client, 45.5, 3.5, &z, NULL);
ck_assert_double_eq(z, 0);
/* Clean the memory */
turtle_client_destroy(&client);
turtle_stack_destroy(&stack);
/* Catch errors and try some false cases */
turtle_error_handler_t * handler = turtle_error_handler_get();
turtle_error_handler_set(&catch_error);
regex_t regex;
enum turtle_return rc;
rc = turtle_client_create(&client, stack);
ck_assert_int_eq(rc, TURTLE_RETURN_BAD_ADDRESS);
regcomp(®ex, "{ turtle_client_create \\[#[0-9]*\\], "
"src/turtle/client.c:[0-9]* } invalid null stack", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
turtle_stack_create(&stack, STACK_PATH, 0, NULL, NULL);
rc = turtle_client_create(&client, stack);
ck_assert_int_eq(rc, TURTLE_RETURN_BAD_ADDRESS);
regcomp(®ex, "{ turtle_client_create \\[#[0-9]*\\], "
"src/turtle/client.c:[0-9]* } stack has no lock", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
turtle_stack_destroy(&stack);
turtle_stack_create(&stack, STACK_PATH, 1, ¬hing, ¬hing);
turtle_client_create(&client, stack);
rc = turtle_client_elevation(client, 45.5, 4.5, &z, NULL);
ck_assert_int_eq(rc, TURTLE_RETURN_PATH_ERROR);
regcomp(®ex, "{ turtle_client_elevation \\[#[0-9]*\\], "
"src/turtle/stack.c:[0-9]* } missing elevation data in "
"`" STACK_PATH "'", 0);
ck_assert_int_eq(regexec(®ex, error_buffer, 0, NULL, 0), 0);
regfree(®ex);
turtle_client_destroy(&client);
turtle_stack_destroy(&stack);
/* Restore the error handler */
turtle_error_handler_set(handler);
}
END_TEST
START_TEST (test_stepper)
{
/* Create the stepper */
struct turtle_stack * stack;
turtle_stack_create(&stack, STACK_PATH, 0, NULL, NULL);
struct turtle_map * map;
turtle_map_load(&map, MAP_PATH);
struct turtle_map * geoid;
turtle_map_load(&geoid, GEOID_PATH);
struct turtle_stepper * stepper;
turtle_stepper_create(&stepper);
/* Configure the stepper */
turtle_stepper_geoid_set(stepper, geoid);
turtle_stepper_add_flat(stepper, 10);
turtle_stepper_add_stack(stepper, stack, 0.);
turtle_stepper_add_map(stepper, map, 0.);
turtle_stepper_add_stack(stepper, stack, 0.);
turtle_stepper_add_map(stepper, map, 0.);
ck_assert_int_eq(stepper->data.size, 3);
struct turtle_stepper_layer * current_layer = stepper->layers.tail;
ck_assert_int_eq(current_layer->meta.size, 5);
ck_assert_int_eq(stepper->transforms.size, 2);
int i;
for (i = 0; i < 2; i++) {
/* Set the approximation range */
if (i) turtle_stepper_range_set(stepper, 100);
/* Get the initial position and direction in ECEF */
const double latitude = 45.5, longitude = 2.5;
const double azimuth = 0, elevation = 0;
const double height = -0.5, altitude_max = 1.5E+03;
double position[3], direction[3];
int layer;
turtle_stepper_position(
stepper, latitude, longitude, height, 0, position, &layer);
turtle_ecef_from_horizontal(
latitude, longitude, azimuth, elevation, direction);
/* Do some dummy stepping */
for (;;) {
/* Update the step data */
double altitude, ground_elevation, la, lo;
turtle_stepper_step(stepper, position, NULL, &la, &lo,
&altitude, &ground_elevation, NULL, &layer);
if (altitude >= altitude_max) break;
double altitude1, ground_elevation1, la1, lo1;
double step_length;
int layer1;
turtle_stepper_step(stepper, position, NULL, &la1, &lo1,
&altitude1, &ground_elevation1, &step_length,
&layer1);
ck_assert_double_eq(altitude1, altitude);
ck_assert_double_eq(
ground_elevation1, ground_elevation);
ck_assert_double_eq(la1, la);
ck_assert_double_eq(lo1, lo);
ck_assert_double_eq(layer1, layer);
/* Update the position */
turtle_stepper_step(stepper, position, direction, &la,
&lo, &altitude, &ground_elevation, NULL, &layer);
if (altitude >= altitude_max) break;
}
}
/* Check the case of an outside initial position */
turtle_stepper_destroy(&stepper);
turtle_stepper_create(&stepper);
turtle_stepper_add_map(stepper, map, 0);
double position[3] = { 1., 2., 3. };
int layer;
turtle_stepper_position(stepper, 45., 90., 0., 0, position, &layer);
ck_assert_double_eq(position[0], 1.);
ck_assert_double_eq(position[1], 2.);
ck_assert_double_eq(position[2], 3.);
ck_assert_int_eq(layer, -1);
/* Check the case of a single data layer */
turtle_stepper_destroy(&stepper);
turtle_stepper_create(&stepper);
turtle_stepper_add_stack(stepper, stack, 0);
const double latitude = 45.5, longitude = 2.5, height = -0.5;
double direction[3];
turtle_stepper_position(
stepper, latitude, longitude, height, 0, position, &layer);
turtle_ecef_from_horizontal(
latitude, longitude, 0, 0, direction);
/* Step out of the map */
const int nmax = 100000;
for (i = 0; i < nmax; i++) {
double altitude, ground_elevation, la, lo;
double step_length;
int index[2];
turtle_stepper_step(stepper, position, direction, &la,
&lo, &altitude, &ground_elevation, &step_length, index);
if (index[0] < 0) break;
}
ck_assert_int_lt(i, nmax);
/* Check other geometries */
turtle_stepper_destroy(&stepper);
turtle_stepper_create(&stepper);
turtle_stepper_geoid_set(stepper, geoid);
turtle_stepper_add_layer(stepper);
turtle_stepper_add_flat(stepper, 0);
ck_assert_ptr_eq(turtle_stepper_geoid_get(stepper), geoid);
ck_assert_double_eq(turtle_stepper_range_get(stepper), 1.);
turtle_stepper_range_set(stepper, 10.);
ck_assert_double_eq(turtle_stepper_range_get(stepper), 10.);
ck_assert_double_eq(turtle_stepper_slope_get(stepper), 0.4);
turtle_stepper_slope_set(stepper, 1.);
ck_assert_double_eq(turtle_stepper_slope_get(stepper), 1.);
ck_assert_double_eq(turtle_stepper_resolution_get(stepper), 1E-02);
turtle_stepper_resolution_set(stepper, 1E-03);
ck_assert_double_eq(turtle_stepper_resolution_get(stepper), 1E-03);
turtle_stepper_position(
stepper, latitude, longitude, height, 0, position, &layer);
double altitude, ground_elevation[2], la, lo;
int index[2];
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_double_eq(ground_elevation[0], -DBL_MAX);
ck_assert_double_eq_tol(ground_elevation[1] + height, altitude, 1E-08);
ck_assert_int_eq(index[0], 0);
ck_assert_int_eq(index[1], 0);
turtle_stepper_destroy(&stepper);
turtle_stepper_create(&stepper);
turtle_stepper_add_stack(stepper, stack, 0.);
turtle_stepper_geoid_set(stepper, geoid);
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_double_eq_tol(ground_elevation[1] + height, altitude, 1E-08);
turtle_ecef_from_horizontal(latitude, longitude, 0, 0, direction);
for (i = 0; i < 3; i++) position[i] += direction[i] * 1E+06;
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_int_eq(index[0], -1);
ck_assert_int_eq(index[1], -1);
turtle_stepper_position(stepper, 80, 0, height, 0, position, &layer);
ck_assert_int_eq(layer, -1);
/* Check the client layer */
turtle_stepper_destroy(&stepper);
turtle_stack_destroy(&stack);
turtle_stack_create(&stack, STACK_PATH, 1, ¬hing, ¬hing);
turtle_stepper_create(&stepper);
turtle_stepper_add_stack(stepper, stack, 0.);
turtle_stepper_range_set(stepper, 100);
turtle_stepper_position(
stepper, latitude, longitude, height, 0, position, &layer);
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_double_eq(ground_elevation[0], -DBL_MAX);
ck_assert_double_eq_tol(ground_elevation[1] + height, altitude, 1E-08);
double altitude1, ground_elevation1[2], la1, lo1;
int index1[2];
turtle_stepper_step(stepper, position, NULL, &la1, &lo1, &altitude1,
ground_elevation1, NULL, index1);
ck_assert_double_eq(altitude1, altitude);
ck_assert_double_eq(ground_elevation1[0], ground_elevation[0]);
ck_assert_double_eq(ground_elevation1[1], ground_elevation[1]);
ck_assert_double_eq(la1, la);
ck_assert_double_eq(lo1, lo);
ck_assert_int_eq(index1[0], index[0]);
ck_assert_int_eq(index1[1], index[1]);
for (i = 0; i < 3; i++) position[i] += direction[i] * 10;
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_double_eq(ground_elevation[0], -DBL_MAX);
ck_assert_double_eq(ground_elevation[1], 0);
ck_assert_int_eq(index[0], 0);
ck_assert_int_eq(index[1], 0);
for (i = 0; i < 3; i++) position[i] += direction[i] * 100;
turtle_stepper_step(stepper, position, NULL, &la, &lo, &altitude,
ground_elevation, NULL, index);
ck_assert_double_eq(ground_elevation[0], -DBL_MAX);
ck_assert_double_eq(ground_elevation[1], 0);
ck_assert_int_eq(index[0], 0);
ck_assert_int_eq(index[1], 0);
/* Clean the memory */
turtle_stepper_destroy(&stepper);
turtle_map_destroy(&geoid);
turtle_map_destroy(&map);
turtle_stack_destroy(&stack);
}
#ifndef TURTLE_NO_GRD
START_TEST (test_io_grd)
{
/* Generate a geoid in .GRD format, e.g. as used by EGM96 */
FILE * fid = fopen("tests/geoid.grd", "w+");
fprintf(fid,
" -90.000000 90.000000 .000000 360.000000 "
"15.000000 30.000000\n\n");
#ifndef M_PI
/* Define pi, if unknown. */
#define M_PI 3.14159265358979323846
#endif
const double deg = M_PI / 180.;
int i, k;
for (i = 0, k = 0; i < 13; i++) {