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evas-map-utils.c
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define PACKAGE_EXAMPLES_DIR "."
#endif
#include <Ecore.h>
#include <Ecore_Evas.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#define WIDTH 480
#define HEIGHT 480
typedef struct
{
Ecore_Evas *ee;
Evas *canvas;
struct {
int r, g, b, a;
} colors[6];
int colors_index;
int frame;
Eina_Bool alpha : 1;
Eina_Bool smooth : 1;
Eina_Bool backface_culling : 1;
Eina_Bool apply_perspective : 1;
Eina_Bool apply_lighting : 1;
} App_Data;
static const char *help_string =
"Valid commands:\n"
"\ta - toggle alpha for maps\n"
"\ts - toggle smooth for maps\n"
"\tc - switch map color\n"
"\tb - toggle backface culling\n"
"\tp - toggle perspective\n"
"\tl - toggle lighting\n"
"\th - prints this help\n";
static Eina_Bool
_anim_cb(void *data)
{
App_Data *ad = data;
Evas_Map *m;
Evas_Object *o;
int r, g, b, a;
int win_w, win_h, img_w, img_h;
Evas_Coord x, y, w, h;
evas_output_size_get(ad->canvas, &win_w, &win_h);
m = evas_map_new(4);
evas_map_smooth_set(m, ad->smooth);
evas_map_alpha_set(m, ad->alpha);
r = ad->colors[ad->colors_index].r;
g = ad->colors[ad->colors_index].g;
b = ad->colors[ad->colors_index].b;
a = ad->colors[ad->colors_index].a;
evas_map_util_points_color_set(m, r, g, b, a);
o = evas_object_name_find(ad->canvas, "obj1");
evas_object_geometry_get(o, &x, &y, &w, &h);
evas_map_util_points_populate_from_object(m, o);
evas_map_util_rotate(m, 3 * ad->frame, x + (w / 2), y + (h / 2));
evas_object_map_set(o, m);
evas_object_map_enable_set(o, EINA_TRUE);
o = evas_object_name_find(ad->canvas, "obj2");
evas_object_geometry_get(o, &x, &y, &w, &h);
evas_object_image_size_get(o, &img_w, &img_h);
evas_map_util_points_populate_from_object_full(m, o, 100);
evas_map_point_image_uv_set(m, 0, 0, 0);
evas_map_point_image_uv_set(m, 1, img_w, 0);
evas_map_point_image_uv_set(m, 2, img_w, img_h);
evas_map_point_image_uv_set(m, 3, 0, img_h);
evas_map_util_3d_rotate(m, ad->frame * 6, ad->frame * 6, ad->frame * 6,
x + (w / 3), y + 10, 0);
if (ad->apply_lighting)
evas_map_util_3d_lighting(m, win_w / 2, win_h / 2, -100,
255, 255, 255, 0, 0, 0);
evas_object_map_set(o, m);
evas_object_map_enable_set(o, EINA_TRUE);
o = evas_object_name_find(ad->canvas, "obj3");
evas_object_geometry_get(o, &x, &y, &w, &h);
evas_object_image_size_get(o, &img_w, &img_h);
evas_map_util_points_populate_from_geometry(m, x, y + (h / 2), w, h, -20);
evas_map_point_image_uv_set(m, 0, 0, 0);
evas_map_point_image_uv_set(m, 1, img_w, 0);
evas_map_point_image_uv_set(m, 2, img_w, img_h);
evas_map_point_image_uv_set(m, 3, 0, img_h);
evas_map_util_3d_rotate(m, 20, ad->frame * 6, 0,
x + (w / 2), y + (w / 2), w / 2);
if (ad->apply_perspective)
evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 256);
if (ad->apply_lighting)
{
Evas_Coord mx, my;
evas_pointer_canvas_xy_get(ad->canvas, &mx, &my);
evas_map_util_3d_lighting(m, mx, my, -256,
255, 255, 255, 0, 0, 0);
}
if (ad->backface_culling)
{
if (evas_map_util_clockwise_get(m))
evas_object_show(o);
else
evas_object_hide(o);
}
else
evas_object_show(o);
evas_object_map_set(o, m);
evas_object_map_enable_set(o, EINA_TRUE);
evas_map_free(m);
o = evas_object_name_find(ad->canvas, "obj4");
evas_object_geometry_get(o, &x, &y, &w, &h);
evas_object_image_size_get(evas_object_image_source_get(o), &img_w, &img_h);
m = evas_map_new(4);
evas_map_point_coord_set(m, 0, x, y + h, 0);
evas_map_point_coord_set(m, 1, x + w, y + h, 0);
evas_map_point_coord_set(m, 2, win_w - 10, win_h - 30, 0);
evas_map_point_coord_set(m, 3, (win_w / 2) + 10, win_h - 30, 0);
evas_map_point_image_uv_set(m, 0, 0, img_h);
evas_map_point_image_uv_set(m, 1, img_w, img_h);
evas_map_point_image_uv_set(m, 2, img_w, 2 * (img_h / 3));
evas_map_point_image_uv_set(m, 3, 0, 2 * (img_h / 3));
evas_map_point_color_set(m, 0, 200, 200, 200, 150);
evas_map_point_color_set(m, 1, 200, 200, 200, 150);
evas_map_point_color_set(m, 2, 0, 0, 0, 0);
evas_map_point_color_set(m, 3, 0, 0, 0, 0);
evas_object_map_set(o, m);
evas_object_map_enable_set(o, EINA_TRUE);
evas_map_free(m);
ad->frame = (ad->frame + 1) % 60;
return EINA_TRUE;
}
static void
_on_keydown(void *data, Evas *e EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *event)
{
App_Data *ad = data;
Evas_Event_Key_Down *ev = event;
const Evas_Modifier *mods;
mods = evas_key_modifier_get(ad->canvas);
switch (ev->key[0])
{
case 'a':
ad->alpha = !ad->alpha;
break;
case 's':
ad->smooth = !ad->smooth;
break;
case 'c':
ad->colors_index = (ad->colors_index + 1) % 6;
break;
case 'b':
ad->backface_culling = !ad->backface_culling;
break;
case 'p':
ad->apply_perspective = !ad->apply_perspective;
break;
case 'l':
ad->apply_lighting = !ad->apply_lighting;
break;
case 'h':
puts(help_string);
break;
default:
break;
}
}
static void
_objs_fit(Evas *e)
{
Evas_Object *o;
int w, h;
evas_output_size_get(e, &w, &h);
w /= 2;
h /= 2;
o = evas_object_name_find(e, "obj1");
evas_object_move(o, w / 4, h / 4);
evas_object_resize(o, w / 2, h / 2);
o = evas_object_name_find(e, "obj2");
evas_object_move(o, 5 * w / 4, h / 4);
evas_object_resize(o, w / 2, h / 2);
o = evas_object_name_find(e, "obj3");
evas_object_move(o, w / 4, 5 * h / 4);
evas_object_resize(o, w / 2, h / 2);
o = evas_object_name_find(e, "obj4_source");
evas_object_move(o, 5 * w / 4, 5 * h / 4);
evas_object_resize(o, w / 2, h / 2);
o = evas_object_name_find(e, "obj4");
evas_object_move(o, 5 * w / 4, 5 * h / 4);
evas_object_resize(o, w / 2, h / 2);
}
static void
_on_resize(void *data EINA_UNUSED, Evas *e, Evas_Object *o EINA_UNUSED, void *event EINA_UNUSED)
{
_objs_fit(e);
}
static void
_on_free(void *data EINA_UNUSED, Evas *e EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *event EINA_UNUSED)
{
ecore_main_loop_quit();
}
int
main(void)
{
Evas_Object *bg, *o, *osrc;
static App_Data d = {
.ee = NULL,
.canvas = NULL,
.colors = {
{ 255, 255, 255, 255 },
{ 128, 128, 0, 128 },
{ 255, 0, 0, 255 },
{ 64, 128, 255, 255 },
{ 11, 23, 58, 132 },
{ 0, 0, 0, 255 }
},
.colors_index = 0,
.frame = 0,
.alpha = EINA_FALSE,
.smooth = EINA_FALSE,
.backface_culling = EINA_FALSE,
.apply_perspective = EINA_TRUE,
.apply_lighting = EINA_TRUE
};
if (!ecore_evas_init())
return EXIT_FAILURE;
d.ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
if (!d.ee)
goto error;
d.canvas = ecore_evas_get(d.ee);
bg = evas_object_image_filled_add(d.canvas);
evas_object_image_file_set(bg, "cube1.png", NULL);
ecore_evas_object_associate(d.ee, bg, 0);
evas_object_focus_set(bg, EINA_TRUE);
evas_object_move(bg, 0, 0);
evas_object_resize(bg, WIDTH, HEIGHT);
evas_object_show(bg);
o = evas_object_rectangle_add(d.canvas);
evas_object_name_set(o, "obj1");
evas_object_color_set(o, 128, 0, 200, 200);
evas_object_show(o);
o = evas_object_image_filled_add(d.canvas);
evas_object_name_set(o, "obj2");
evas_object_image_file_set(o, "enlightenment.png", NULL);
evas_object_show(o);
o = evas_object_image_filled_add(d.canvas);
evas_object_name_set(o, "obj3");
evas_object_image_file_set(o, "enlightenment.png", NULL);
evas_object_show(o);
osrc = evas_object_image_filled_add(d.canvas);
evas_object_image_file_set(osrc, "im1.png", NULL);
evas_object_name_set(osrc, "obj4_source");
evas_object_show(osrc);
o = evas_object_image_filled_add(d.canvas);
evas_object_image_source_set(o, osrc);
evas_object_name_set(o, "obj4");
evas_object_show(o);
_objs_fit(d.canvas);
evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, &d);
evas_object_event_callback_add(bg, EVAS_CALLBACK_RESIZE, _on_resize, NULL);
evas_object_event_callback_add(bg, EVAS_CALLBACK_FREE, _on_free, NULL);
ecore_animator_add(_anim_cb, &d);
ecore_main_loop_begin();
ecore_evas_shutdown();
return 0;
error:
fprintf(stderr, "you got to have at least one evas engine built and linked"
" up to ecore-evas for this example to run properly.\n");
ecore_evas_shutdown();
return -1;
}