test_rotating_forever.c

ephysics_test.h

#ifndef _EPHYSICS_PRIVATE_H
#define _EPHYSICS_PRIVATE_H

#include <Edje.h>
#include <Elementary.h>
#include <Eina.h>
#include <Evas.h>

#include "EPhysics.h"

#ifdef EPHYSICS_LOG_COLOR
#undef EPHYSICS_LOG_COLOR
#endif
#define EPHYSICS_LOG_COLOR EINA_COLOR_BLUE

#ifdef ERR
# undef ERR
#endif
#define ERR(...) EINA_LOG_DOM_ERR(_ephysics_test_log_dom, __VA_ARGS__)

#ifdef DBG
# undef DBG
#endif
#define DBG(...) EINA_LOG_DOM_DBG(_ephysics_test_log_dom, __VA_ARGS__)

#ifdef INF
# undef INF
#endif
#define INF(...) EINA_LOG_DOM_INFO(_ephysics_test_log_dom, __VA_ARGS__)

#ifdef WRN
# undef WRN
#endif
#define WRN(...) EINA_LOG_DOM_WARN(_ephysics_test_log_dom, __VA_ARGS__)

#ifdef CRI
# undef CRI
#endif
#define CRI(...) EINA_LOG_DOM_CRIT(_ephysics_test_log_dom, __VA_ARGS__)

#define EPHYSICS_TEST_THEME "ephysics_test"
#define WIDTH (512)
#define HEIGHT (384)
#define DEPTH (100)
#define SHADOW_ALPHA_ID (1)
#define FLOOR_Y (344)
#define FLOOR_WIDTH (750)
#define SH_THRESHOLD (200)

#ifdef __cplusplus
extern "C" {
#endif

extern int _ephysics_test_log_dom;

typedef struct _Test_Data Test_Data;

struct _Test_Data {
     EPhysics_World *world;
     Evas_Object *layout;
     Evas_Object *win;
     Eina_List *constraints;
     Eina_List *evas_objs;
     Eina_List *bodies;
     void *data;
};

Test_Data *test_data_new(void);
void test_data_del(Test_Data *test_data);

void test_clean(Test_Data *test_data);

void test_win_add(Test_Data *test_data, const char *title, Eina_Bool autodel);

void update_object_cb(void *data, EPhysics_Body *body, void *event_info);

#ifdef __cplusplus
}
#endif

#endif

test_rotating_forever.c

test_clean(Test_Data *test_data)
{
   EPhysics_Constraint *constraint;
   Evas_Object *evas_obj;
   EPhysics_Body *body;

   EINA_LIST_FREE(test_data->constraints, constraint)
      ephysics_constraint_del(constraint);

   EINA_LIST_FREE(test_data->bodies, body)
      ephysics_body_del(body);

   EINA_LIST_FREE(test_data->evas_objs, evas_obj)
      evas_object_del(evas_obj);
}

test_data_new(void)
{
   Test_Data *test_data;

   test_data = calloc(1, sizeof(Test_Data));
   if (!test_data)
     ERR("Failed to create test data");

   return test_data;
}

test_win_add(Test_Data *test_data, const char *title, Eina_Bool autodel)
{
   Evas_Object *win, *ly;

   win = elm_win_add(NULL, title, ELM_WIN_BASIC);
   elm_win_title_set(win, title);
   elm_win_autodel_set(win, EINA_TRUE);
   evas_object_show(win);
   test_data->win = win;
   if (autodel)
     evas_object_event_callback_add(win, EVAS_CALLBACK_DEL,
                                    _subwin_del_cb, test_data);

   ly = elm_layout_add(win);
   elm_win_resize_object_add(win, ly);
   evas_object_size_hint_min_set(ly, WIDTH, HEIGHT);
   evas_object_size_hint_max_set(ly, WIDTH, HEIGHT);
   elm_layout_file_set(ly, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj",
                       "frame");
   evas_object_show(ly);
   test_data->layout = ly;
}

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "ephysics_test.h"

static Eina_Bool
_rotate_cb(void *data)
{
   EPhysics_Quaternion *quat_prev, quat_delta, quat;
   EPhysics_Body *body = data;

   quat_prev = ephysics_body_rotation_get(body, NULL);
   ephysics_quaternion_set(&quat_delta, 0, 0, -0.15, 0.98);
   ephysics_quaternion_normalize(&quat_delta);
   ephysics_body_rotation_set(
      body, ephysics_quaternion_multiply(&quat_delta, quat_prev, &quat));
   free(quat_prev);

   return EINA_TRUE;
}

static Eina_Bool
_increase_torque_cb(void *data)
{
   EPhysics_Body *body = data;
   Evas_Object *obj;

   ephysics_body_torque_apply(body, 0, 0, 2);
   obj = ephysics_body_evas_object_get(body);
   evas_object_data_set(obj, "increase_timer", NULL);

   return EINA_FALSE;
}

static Eina_Bool
_stop_torque_cb(void *data)
{
   EPhysics_Body *body = data;
   Evas_Object *obj;

   ephysics_body_forces_clear(body);
   obj = ephysics_body_evas_object_get(body);
   evas_object_data_set(obj, "stop_timer", NULL);

   return EINA_FALSE;
}

static void
_del_cb(void *data, EPhysics_Body *body __UNUSED__, void *event_info __UNUSED__)
{
   ecore_timer_del(data);
}

static void
_del_torque_cb(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
{
   Ecore_Timer *timer;

   timer = evas_object_data_get(obj, "increase_timer");
   if (timer)
     ecore_timer_del(timer);

   timer = evas_object_data_get(obj, "stop_timer");
   if (timer)
     ecore_timer_del(timer);
}

static void
_update_object_cb(void *data __UNUSED__, EPhysics_Body *body, void *event_info __UNUSED__)
{
   double rx, ry, rz, rw, vrot, torque;
   EPhysics_Quaternion quat;

   ephysics_body_angular_velocity_get(body, NULL, NULL, &vrot);
   ephysics_body_torques_get(body, NULL, NULL, &torque);

   ephysics_body_rotation_get(body, &quat);
   ephysics_quaternion_get(&quat, &rx, &ry, &rz, &rw);

   ephysics_body_evas_object_update(body);

   DBG("body: %p, rot: (%lf, %lf, %lf, %lf), vrot: %lf, torque: %lf", body,
       rx, ry, rz, rw, vrot, torque);
}

static void
_world_populate(Test_Data *test_data)
{
   EPhysics_Body *body;
   Ecore_Timer *timer;
   Evas_Object *cube;

   cube = elm_image_add(test_data->win);
   elm_image_file_set(
      cube, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "blue-cube");
   evas_object_move(cube, WIDTH / 3, HEIGHT / 2 - 30);
   evas_object_resize(cube, 70, 70);
   evas_object_show(cube);
   test_data->evas_objs = eina_list_append(test_data->evas_objs, cube);

   body = ephysics_body_box_add(test_data->world);
   ephysics_body_evas_object_set(body, cube, EINA_TRUE);
   test_data->bodies = eina_list_append(test_data->bodies, body);
   ephysics_body_event_callback_add(body,
                                    EPHYSICS_CALLBACK_BODY_UPDATE,
                                    _update_object_cb, NULL);

   ephysics_body_torque_impulse_apply(body, 0, 0, 1);

   cube = elm_image_add(test_data->win);
   elm_image_file_set(
      cube, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "purple-cube");
   evas_object_move(cube, WIDTH / 3, FLOOR_Y - 70);
   evas_object_resize(cube, 70, 70);
   evas_object_show(cube);
   test_data->evas_objs = eina_list_append(test_data->evas_objs, cube);

   body = ephysics_body_box_add(test_data->world);
   ephysics_body_evas_object_set(body, cube, EINA_TRUE);
   test_data->bodies = eina_list_append(test_data->bodies, body);
   ephysics_body_event_callback_add(body,
                                    EPHYSICS_CALLBACK_BODY_UPDATE,
                                    _update_object_cb, NULL);

   ephysics_body_impulse_apply(body, 30, 0, 0, 0, -10, 0);

   cube = elm_image_add(test_data->win);
   elm_image_file_set(
      cube, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "purple-cube");
   evas_object_move(cube, WIDTH / 3, 60);
   evas_object_resize(cube, 70, 70);
   evas_object_show(cube);
   test_data->evas_objs = eina_list_append(test_data->evas_objs, cube);

   body = ephysics_body_box_add(test_data->world);
   ephysics_body_evas_object_set(body, cube, EINA_TRUE);
   test_data->bodies = eina_list_append(test_data->bodies, body);
   ephysics_body_event_callback_add(body,
                                    EPHYSICS_CALLBACK_BODY_UPDATE,
                                    _update_object_cb, NULL);

   timer = ecore_timer_add(1, _rotate_cb, body);

   ephysics_body_event_callback_add(body,
                                    EPHYSICS_CALLBACK_BODY_DEL,
                                    _del_cb, timer);

   cube = elm_image_add(test_data->win);
   elm_image_file_set(
      cube, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "blue-cube");
   evas_object_move(cube, WIDTH * 2 / 3, 60);
   evas_object_resize(cube, 70, 70);
   evas_object_show(cube);
   test_data->evas_objs = eina_list_append(test_data->evas_objs, cube);

   body = ephysics_body_box_add(test_data->world);
   ephysics_body_evas_object_set(body, cube, EINA_TRUE);
   test_data->bodies = eina_list_append(test_data->bodies, body);
   ephysics_body_event_callback_add(body,
                                    EPHYSICS_CALLBACK_BODY_UPDATE,
                                    _update_object_cb, NULL);

   ephysics_body_torque_apply(body, 0, 0, 2);
   evas_object_event_callback_add(cube, EVAS_CALLBACK_DEL,
                                  _del_torque_cb, NULL);

   timer = ecore_timer_add(3, _increase_torque_cb, body);
   evas_object_data_set(cube, "increase_timer", timer);
   timer = ecore_timer_add(5, _stop_torque_cb, body);
   evas_object_data_set(cube, "stop_timer", timer);
}

static void
_restart(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
   Test_Data *test_data = data;

   DBG("Restart pressed");
   test_clean(test_data);
   _world_populate(test_data);
}

void
test_rotating_forever(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
   EPhysics_World *world;
   Test_Data *test_data;

   if (!ephysics_init())
     return;

   test_data = test_data_new();
   test_win_add(test_data, "Rotating Forever", EINA_TRUE);
   elm_object_signal_emit(test_data->layout, "borders,show", "ephysics_test");
   elm_layout_signal_callback_add(test_data->layout, "restart", "test-theme",
                                  _restart, test_data);

   world = ephysics_world_new();
   ephysics_world_render_geometry_set(world, 50, 40, -50,
                                      WIDTH - 100, FLOOR_Y - 40, DEPTH);
   test_data->world = world;
   ephysics_world_gravity_set(world, 0, 0, 0);

   _world_populate(test_data);
}