test_camera_track.c

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test_camera_track.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
EPhysics.h
These routines are used for EPhysics library interaction.
Edje.h
Edje Graphical Design Library.
Eina.h
Eina Utility library.
EPhysics_Body
struct _EPhysics_Body EPhysics_Body
Body handle, represents an object on EPhysics world.
Definition: EPhysics.h:655
EPhysics_World
struct _EPhysics_World EPhysics_World
World handle, most basic type of EPhysics.
Definition: EPhysics.h:901
Eina_Bool
unsigned char Eina_Bool
Type to mimic a boolean.
Definition: eina_types.h:527
Evas_Object
Efl_Canvas_Object Evas_Object
An Evas Object handle.
Definition: Evas_Common.h:185
_Eina_List
Type for a generic double linked list.
Definition: eina_list.h:318

# test_camera_track.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);
}
ephysics_body_del
EAPI void ephysics_body_del(EPhysics_Body *body)
Delete a physics body.
EPhysics_Constraint
struct _EPhysics_Constraint EPhysics_Constraint
Constraint handle, used to limit bodies movements.
Definition: EPhysics.h:4531
ephysics_constraint_del
EAPI void ephysics_constraint_del(EPhysics_Constraint *constraint)
Deletes a physics constraint.
EINA_LIST_FREE
#define EINA_LIST_FREE(list, data)
Definition for the macro to remove each list node while having access to each node's data.
Definition: eina_list.h:1629
evas_object_del
EVAS_API void evas_object_del(Evas_Object *obj)
Marks the given Evas object for deletion (when Evas will free its memory).
Definition: evas_object_main.c:928
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;
}
EVAS_CALLBACK_DEL
@ EVAS_CALLBACK_DEL
Object Being Deleted (called before Free)
Definition: Evas_Common.h:439
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
elm_layout_add
Evas_Object * elm_layout_add(Evas_Object *parent)
Add a new layout to the parent.
Definition: efl_ui_layout.c:3067
elm_layout_file_set
Eina_Bool elm_layout_file_set(Eo *obj, const char *file, const char *group)
Set the file that will be used as layout.
Definition: efl_ui_layout.c:3074
elm_win_title_set
void elm_win_title_set(Evas_Object *obj, const char *title)
Set the title of the window.
Definition: efl_ui_win.c:8641
elm_win_resize_object_add
void elm_win_resize_object_add(Eo *obj, Evas_Object *subobj)
Add subobj as a resize object of window obj.
Definition: efl_ui_win.c:8997
elm_win_autodel_set
void elm_win_autodel_set(Eo *obj, Eina_Bool autodel)
Set the window's autodel state.
Definition: efl_ui_win.c:6194
elm_win_add
Evas_Object * elm_win_add(Evas_Object *parent, const char *name, Elm_Win_Type type)
Adds a window object.
Definition: efl_ui_win.c:9550
ELM_WIN_BASIC
@ ELM_WIN_BASIC
A normal window.
Definition: elm_win_legacy.h:65
evas_object_show
EVAS_API void evas_object_show(Evas_Object *eo_obj)
Makes the given Evas object visible.
Definition: evas_object_main.c:1814
evas_object_event_callback_add
EVAS_API void evas_object_event_callback_add(Evas_Object *eo_obj, Evas_Callback_Type type, Evas_Object_Event_Cb func, const void *data)
Add (register) a callback function to a given Evas object event.
Definition: evas_callbacks.c:478
evas_object_size_hint_max_set
EVAS_API void evas_object_size_hint_max_set(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Sets the hints for an object's maximum size.
Definition: evas_object_main.c:2596
evas_object_size_hint_min_set
EVAS_API void evas_object_size_hint_min_set(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Sets the hints for an object's minimum size.
Definition: evas_object_main.c:2611
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "ephysics_test.h"
typedef struct _Track_Data Track_Data;
struct _Track_Data {
Test_Data base;
EPhysics_Body *body;
Evas_Object *sp;
int old_cx;
};
static void
_update_floor(Evas_Object *layout, const char *name, int delta_x, int cy, Eina_Bool ver)
{
Evas_Object *floor_obj;
int x, y, fx, fy;
floor_obj = evas_object_data_get(layout, name);
evas_object_geometry_get(floor_obj, &x, &y, NULL, NULL);
fx = x + delta_x;
if (fx < -FLOOR_WIDTH)
fx += 2 * FLOOR_WIDTH;
fy = (ver) ? FLOOR_Y - 20 - cy + 40 : y;
evas_object_move(floor_obj, fx, fy);
}
static void
_camera_moved_cb(void *data, EPhysics_World *world __UNUSED__, void *event_info)
{
EPhysics_Camera *camera = event_info;
Track_Data *track_data = data;
int cx, cy, delta_x = 0;
Eina_Bool hor, ver;
DBG("Camera moved");
ephysics_camera_tracked_body_get(camera, NULL, &hor, &ver);
ephysics_camera_position_get(camera, &cx, &cy);
if (hor)
delta_x = track_data->old_cx - cx;
_update_floor(track_data->base.layout, "floor", delta_x, cy, ver);
_update_floor(track_data->base.layout, "floor2", delta_x, cy, ver);
track_data->old_cx = cx;
}
static void
_track_apply(Track_Data *track_data)
{
Eina_Bool hor = EINA_FALSE;
Eina_Bool ver = EINA_FALSE;
EPhysics_Camera *camera;
EPhysics_Body *body;
int mode;
body = track_data->body;
camera = ephysics_world_camera_get(track_data->base.world);
mode = (int) elm_spinner_value_get(track_data->sp);
switch (mode)
{
case 1:
hor = EINA_TRUE;
break;
case 3:
hor = EINA_TRUE;
case 2:
ver = EINA_TRUE;
}
INF("Tracking mode: hor = %i, ver = %i", hor, ver);
ephysics_camera_body_track(camera, body, hor, ver);
}
static void
_tracking_mode_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
_track_apply(data);
}
static void
_world_populate(Track_Data *track_data)
{
static const char *colors[] = {"blue-cube", "purple-cube"};
Evas_Object *cube, *sphere;
EPhysics_Body *body;
int i, color, row;
for (i = 0; i < 9; i++)
{
color = i % 3 % 2;
row = i / 3;
cube = elm_image_add(track_data->base.win);
elm_image_file_set(
cube, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj",
colors[color]);
evas_object_move(cube, i * 70, (row + 2) * 70);
evas_object_resize(cube, 70, 70);
evas_object_show(cube);
track_data->base.evas_objs = eina_list_append(
track_data->base.evas_objs, cube);
body = ephysics_body_box_add(track_data->base.world);
ephysics_body_evas_object_set(body, cube, EINA_TRUE);
ephysics_body_restitution_set(body, 0.95);
ephysics_body_friction_set(body, 1);
ephysics_body_mass_set(body, 0);
track_data->base.bodies = eina_list_append(
track_data->base.bodies, body);
}
sphere = elm_image_add(track_data->base.win);
elm_image_file_set(
sphere, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "green-ball");
evas_object_move(sphere, 0, 80);
evas_object_resize(sphere, 54, 54);
evas_object_show(sphere);
track_data->base.evas_objs = eina_list_append(track_data->base.evas_objs,
sphere);
body = ephysics_body_sphere_add(track_data->base.world);
ephysics_body_evas_object_set(body, sphere, EINA_TRUE);
ephysics_body_restitution_set(body, 0.95);
ephysics_body_friction_set(body, 1);
ephysics_body_damping_set(body, 0.1, 0);
ephysics_body_central_impulse_apply(body, 90, 0, 0);
track_data->body = body;
track_data->base.bodies = eina_list_append(track_data->base.bodies, body);
}
static void
_restart(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
Track_Data *track_data = data;
EPhysics_Camera *camera;
Evas_Object *floor_obj;
DBG("Restart pressed");
test_clean((Test_Data *)track_data);
_world_populate(track_data);
floor_obj = evas_object_data_get(track_data->base.layout, "floor");
evas_object_move(floor_obj, - WIDTH / 2, FLOOR_Y - 20);
floor_obj = evas_object_data_get(track_data->base.layout, "floor2");
evas_object_move(floor_obj, FLOOR_WIDTH - WIDTH / 2, FLOOR_Y - 20);
camera = ephysics_world_camera_get(track_data->base.world);
ephysics_camera_position_set(camera, 50, 40);
track_data->old_cx = 50;
_track_apply(track_data);
}
static void
_win_del(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
Track_Data *track_data = data;
test_clean((Test_Data *)track_data);
evas_object_del(track_data->base.layout);
ephysics_world_del(track_data->base.world);
free(track_data);
ephysics_shutdown();
}
void
test_camera_track(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
EPhysics_Body *boundary;
Evas_Object *sp, *floor_obj;
Track_Data *track_data;
EPhysics_World *world;
if (!ephysics_init())
return;
track_data = calloc(1, sizeof(Track_Data));
if (!track_data)
{
ERR("Failed to create test data");
ephysics_shutdown();
return;
}
test_win_add((Test_Data *) track_data, "Camera Track", EINA_FALSE);
evas_object_event_callback_add(track_data->base.win, EVAS_CALLBACK_DEL,
_win_del, track_data);
elm_layout_signal_callback_add(track_data->base.layout, "restart",
"test-theme", _restart, track_data);
sp = elm_spinner_add(track_data->base.win);
elm_spinner_min_max_set(sp, 0, 3);
elm_spinner_step_set(sp, 1);
elm_spinner_wrap_set(sp, EINA_TRUE);
elm_spinner_special_value_add(sp, 0, "No tracking");
elm_spinner_special_value_add(sp, 1, "Horizontal tracking");
elm_spinner_special_value_add(sp, 2, "Vertical tracking");
elm_spinner_special_value_add(sp, 3, "Full tracking");
elm_spinner_editable_set(sp, EINA_FALSE);
elm_object_style_set(sp, "ephysics-test");
evas_object_smart_callback_add(sp, "delay,changed", _tracking_mode_cb,
track_data);
elm_layout_content_set(track_data->base.layout, "extra_input", sp);
track_data->sp = sp;
floor_obj = elm_image_add(track_data->base.win);
elm_image_file_set(
floor_obj, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "floor");
evas_object_move(floor_obj, - WIDTH / 2, FLOOR_Y - 20);
evas_object_resize(floor_obj, FLOOR_WIDTH, 224);
evas_object_show(floor_obj);
evas_object_data_set(track_data->base.layout, "floor", floor_obj);
floor_obj = elm_image_add(track_data->base.win);
elm_image_file_set(
floor_obj, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "floor");
evas_object_move(floor_obj, FLOOR_WIDTH - WIDTH / 2, FLOOR_Y - 20);
evas_object_resize(floor_obj, FLOOR_WIDTH, 224);
evas_object_show(floor_obj);
evas_object_data_set(track_data->base.layout, "floor2", floor_obj);
world = ephysics_world_new();
ephysics_world_render_geometry_set(world, 50, 40, -50,
WIDTH - 100, FLOOR_Y - 40, DEPTH);
track_data->base.world = world;
ephysics_world_event_callback_add(world,
EPHYSICS_CALLBACK_WORLD_CAMERA_MOVED,
_camera_moved_cb, track_data);
boundary = ephysics_body_box_add(track_data->base.world);
ephysics_body_mass_set(boundary, 0);
ephysics_body_geometry_set(boundary, 0, FLOOR_Y, -15, WIDTH * 4, 10, 30);
ephysics_body_restitution_set(boundary, 0.65);
ephysics_body_friction_set(boundary, 4);
track_data->old_cx = 50;
_world_populate(track_data);
}
ephysics_body_damping_set
EAPI void ephysics_body_damping_set(EPhysics_Body *body, double linear_damping, double angular_damping)
Set the angular and linear damping values.
ephysics_body_evas_object_set
EAPI void ephysics_body_evas_object_set(EPhysics_Body *body, Evas_Object *evas_obj, Eina_Bool use_obj_pos)
Set an evas object to a physics body.
ephysics_body_box_add
EAPI EPhysics_Body * ephysics_body_box_add(EPhysics_World *world)
Create a new box physics body.
ephysics_body_restitution_set
EAPI void ephysics_body_restitution_set(EPhysics_Body *body, double restitution)
Set body's coefficient of restitution.
ephysics_body_geometry_set
EAPI void ephysics_body_geometry_set(EPhysics_Body *body, Evas_Coord x, Evas_Coord y, Evas_Coord z, Evas_Coord w, Evas_Coord h, Evas_Coord d)
Set physics body geometry.
ephysics_body_central_impulse_apply
EAPI void ephysics_body_central_impulse_apply(EPhysics_Body *body, double x, double y, double z)
Apply an impulse on the center of a body.
ephysics_body_friction_set
EAPI void ephysics_body_friction_set(EPhysics_Body *body, double friction)
Set body's friction.
ephysics_body_sphere_add
EAPI EPhysics_Body * ephysics_body_sphere_add(EPhysics_World *world)
Create a new sphere physics body.
ephysics_body_mass_set
EAPI void ephysics_body_mass_set(EPhysics_Body *body, double mass)
Set body's mass.
ephysics_camera_tracked_body_get
EAPI void ephysics_camera_tracked_body_get(EPhysics_Camera *camera, EPhysics_Body **body, Eina_Bool *horizontal, Eina_Bool *vertical)
Get body tracked by camera.
ephysics_camera_position_get
EAPI void ephysics_camera_position_get(const EPhysics_Camera *camera, Evas_Coord *x, Evas_Coord *y)
Get camera's position.
EPhysics_Camera
struct _EPhysics_Camera EPhysics_Camera
Camera handle, used to change the position of the frame to be rendered.
Definition: EPhysics.h:673
ephysics_camera_body_track
EAPI void ephysics_camera_body_track(EPhysics_Camera *camera, EPhysics_Body *body, Eina_Bool horizontal, Eina_Bool vertical)
Set camera to track a body.
ephysics_camera_position_set
EAPI void ephysics_camera_position_set(EPhysics_Camera *camera, Evas_Coord x, Evas_Coord y)
Set camera's position.
ephysics_world_event_callback_add
EAPI void ephysics_world_event_callback_add(EPhysics_World *world, EPhysics_Callback_World_Type type, EPhysics_World_Event_Cb func, const void *data)
Register a callback to a type of physics world event.
ephysics_world_new
EAPI EPhysics_World * ephysics_world_new(void)
Create a new physics world.
ephysics_world_del
EAPI void ephysics_world_del(EPhysics_World *world)
Deletes a physics world.
ephysics_world_render_geometry_set
EAPI void ephysics_world_render_geometry_set(EPhysics_World *world, Evas_Coord x, Evas_Coord y, Evas_Coord z, Evas_Coord w, Evas_Coord h, Evas_Coord d)
Set dimensions of rendered area to be take on account by default updates.
ephysics_world_camera_get
EAPI EPhysics_Camera * ephysics_world_camera_get(const EPhysics_World *world)
Get the camera used by an ephysics world.
EPHYSICS_CALLBACK_WORLD_CAMERA_MOVED
@ EPHYSICS_CALLBACK_WORLD_CAMERA_MOVED
camera position changed
Definition: EPhysics.h:919
ephysics_shutdown
EAPI int ephysics_shutdown(void)
Shutdown EPhysics.
ephysics_init
EAPI int ephysics_init(void)
Initialize EPhysics.
eina_list_append
EINA_API Eina_List * eina_list_append(Eina_List *list, const void *data)
Appends the given data to the given linked list.
Definition: eina_list.c:584
EINA_FALSE
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition: eina_types.h:533
elm_image_add
Evas_Object * elm_image_add(Evas_Object *parent)
Add a new image to the parent.
Definition: efl_ui_image.c:2735
elm_image_file_set
Eina_Bool elm_image_file_set(Evas_Object *obj, const char *file, const char *group)
Set the file that will be used as the image's source.
Definition: efl_ui_image.c:2435
elm_layout_signal_callback_add
void elm_layout_signal_callback_add(Eo *obj, const char *emission, const char *source, Edje_Signal_Cb func, void *data)
Add a callback for a (Edje) signal emitted by a layout widget's underlying Edje object.
Definition: efl_ui_layout.c:3316
elm_layout_content_set
Eina_Bool elm_layout_content_set(Evas_Object *obj, const char *swallow, Evas_Object *content)
Set the layout content.
Definition: efl_ui_layout.c:1194
elm_spinner_value_get
double elm_spinner_value_get(const Evas_Object *obj)
Control the value the spinner displays.
Definition: elm_spinner.c:1387
elm_spinner_special_value_add
void elm_spinner_special_value_add(Elm_Spinner *obj, double value, const char *label)
Control special string to display in the place of the numerical value.
Definition: elm_spinner_eo.legacy.c:75
elm_spinner_add
Evas_Object * elm_spinner_add(Evas_Object *parent)
Add a new spinner widget to the given parent Elementary (container) object.
Definition: elm_spinner.c:1350
elm_spinner_editable_set
void elm_spinner_editable_set(Elm_Spinner *obj, Eina_Bool editable)
Control whether the spinner can be directly edited by the user or not.
Definition: elm_spinner_eo.legacy.c:39
elm_spinner_wrap_set
void elm_spinner_wrap_set(Elm_Spinner *obj, Eina_Bool wrap)
Control whether the spinner should wrap when it reaches its minimum or maximum value.
Definition: elm_spinner_eo.legacy.c:3
elm_spinner_min_max_set
void elm_spinner_min_max_set(Evas_Object *obj, double min, double max)
Control the minimum and maximum values for the spinner.
Definition: elm_spinner.c:1357
elm_spinner_step_set
void elm_spinner_step_set(Evas_Object *obj, double step)
Control the step used to increment or decrement the spinner value.
Definition: elm_spinner.c:1369
elm_object_style_set
Eina_Bool elm_object_style_set(Evas_Object *obj, const char *style)
Set the style to used by a given widget.
Definition: elm_main.c:1583
Evas
Eo Evas
An opaque handle to an Evas canvas.
Definition: Evas_Common.h:163
evas_object_geometry_get
EVAS_API void evas_object_geometry_get(const Evas_Object *eo_obj, Evas_Coord *x, Evas_Coord *y, Evas_Coord *w, Evas_Coord *h)
Retrieves the position and (rectangular) size of the given Evas object.
Definition: evas_object_main.c:1335
evas_object_data_set
EVAS_API void evas_object_data_set(Evas_Object *eo_obj, const char *key, const void *data)
Set an attached data pointer to an object with a given string key.
Definition: evas_data.c:5
evas_object_move
EVAS_API void evas_object_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
Move the given Evas object to the given location inside its canvas' viewport.
Definition: evas_object_main.c:1171
evas_object_resize
EVAS_API void evas_object_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Changes the size of the given Evas object.
Definition: evas_object_main.c:1236
evas_object_smart_callback_add
EVAS_API void evas_object_smart_callback_add(Evas_Object *eo_obj, const char *event, Evas_Smart_Cb func, const void *data)
Add (register) a callback function to the smart event specified by event on the smart object obj.
Definition: evas_object_smart.c:1040