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efl/src/examples/evas/evas-3d-aabb.c

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/**
* This example shows how to get and draw axis-aligned bounding box.
*
* @see _mesh_aabb(Evas_3D_Mesh **mesh_b, const Evas_3D_Node *node);
* Rotate axises (keys 1-4) for model and bounding box view from another angle.
*
* @verbatim
* gcc -o evas-3d-aabb evas-3d-aabb.c `pkg-config --libs --cflags efl evas ecore ecore-evas eo`
* @endverbatim
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define PACKAGE_EXAMPLES_DIR "."
#define EFL_EO_API_SUPPORT
#define EFL_BETA_API_SUPPORT
#endif
#include <Eo.h>
#include <Evas.h>
#include <Ecore.h>
#include <Ecore_Evas.h>
#include "evas-common.h"
#define WIDTH 400
#define HEIGHT 400
static const char *model_path = PACKAGE_EXAMPLES_DIR EVAS_MODEL_FOLDER "/sonic.md2";
static const char *image_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/sonic.png";
Ecore_Evas *ecore_evas = NULL;
Evas *evas = NULL;
Eo *background = NULL;
Eo *image = NULL;
Eo *scene = NULL;
Eo *root_node = NULL;
Eo *camera_node = NULL;
Eo *light_node = NULL;
Eo *camera = NULL;
Eo *mesh_node = NULL;
Eo *mesh_box_node = NULL;
Eo *mesh = NULL;
Eo *mesh_box = NULL;
Eo *material_box = NULL;
Eo *material = NULL;
Eo *texture = NULL;
Eo *light = NULL;
static Eina_Bool
_mesh_aabb(Evas_3D_Mesh **mesh_b);
static Eina_Bool
_animate_scene(void *data)
{
static int frame = 0;
eo_do((Evas_3D_Node *)data, evas_3d_node_mesh_frame_set(mesh, frame));
_mesh_aabb(&mesh_box);
frame += 32;
if (frame > 256 * 50) frame = 0;
return EINA_TRUE;
}
static void
_on_delete(Ecore_Evas *ee EINA_UNUSED)
{
ecore_main_loop_quit();
}
static void
_on_key_down(void *data, Evas *e EINA_UNUSED, Evas_Object *eo EINA_UNUSED, void *event_info)
{
Evas_Event_Key_Down *ev = event_info;
Evas_3D_Node *node = (Evas_3D_Node *)data;
switch(atoi(ev->key))
{
case 1:
{
eo_do(node, evas_3d_node_orientation_angle_axis_set(90, 1.0, 0.0, 0.0));
break;
}
case 2:
{
eo_do(node, evas_3d_node_orientation_angle_axis_set(90, 0.0, 1.0, 0.0));
break;
}
case 3:
{
eo_do(node, evas_3d_node_orientation_angle_axis_set(90, 0.0, 0.0, 1.0));
break;
}
case 4:
{
eo_do(node, evas_3d_node_orientation_angle_axis_set(90, 1.0, 1.0, 0.0));
break;
}
}
}
static void
_on_canvas_resize(Ecore_Evas *ee)
{
int w, h;
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
eo_do(background, evas_obj_size_set(w, h));
eo_do(image, evas_obj_size_set(w, h));
}
static Eina_Bool
_mesh_aabb(Evas_3D_Mesh **mesh_b)
{
Evas_Real x0, y0, z0, x1, y1, z1;
eo_do(mesh_node, evas_3d_node_bounding_box_get(&x0, &y0, &z0, &x1, &y1, &z1));
float vertices[] =
{
x0, y0, z1,
x0, y1, z1,
x1, y1, z1,
x1, y0, z1,
x0, y0, z0,
x1, y0, z0,
x0, y1, z0,
x1, y1, z0,
x0, y0, z0,
x0, y1, z0,
x0, y0, z1,
x0, y1, z1,
x1, y0, z0,
x1, y1, z0,
x1, y1, z1,
x1, y0, z1,
x0, y1, z0,
x1, y1, z0,
x0, y1, z1,
x1, y1, z1,
x0, y0, z0,
x1, y0, z0,
x1, y0, z1,
x0, y0, z1
};
unsigned short indices[] =
{
0, 1, 2, 3, 1, 2, 0, 3,
4, 5, 5, 7, 7, 6, 6, 4,
8, 9, 9, 11, 11, 10, 10, 8,
12, 13, 13, 14, 14, 15, 15, 12,
16, 17, 17, 19, 19, 18, 18, 16,
20, 21, 21, 22, 22, 23, 23, 20
};
float *cube_vertices = (float *) malloc(1 * sizeof(vertices));
unsigned short *cube_indices = (unsigned short *) malloc(1 * sizeof(indices));
memcpy(cube_vertices, vertices, sizeof(vertices));
memcpy(cube_indices, indices, sizeof(indices));
eo_do(*mesh_b,
evas_3d_mesh_frame_vertex_data_copy_set(0, EVAS_3D_VERTEX_POSITION,
3 * sizeof(float),
&cube_vertices[ 0]),
evas_3d_mesh_index_data_copy_set(EVAS_3D_INDEX_FORMAT_UNSIGNED_SHORT,
48, &cube_indices[0]));
free(cube_vertices);
free(cube_indices);
return EINA_TRUE;
}
int
main(void)
{
if (!ecore_evas_init()) return 0;
ecore_evas = ecore_evas_new("opengl_x11", 10, 10, WIDTH, HEIGHT, NULL);
if (!ecore_evas) return 0;
ecore_evas_callback_delete_request_set(ecore_evas, _on_delete);
ecore_evas_callback_resize_set(ecore_evas, _on_canvas_resize);
ecore_evas_show(ecore_evas);
evas = ecore_evas_get(ecore_evas);
scene = eo_add(EVAS_3D_SCENE_CLASS, evas);
root_node = eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_NODE));
camera = eo_add(EVAS_3D_CAMERA_CLASS, evas);
eo_do(camera,
evas_3d_camera_projection_perspective_set(60.0, 1.0, 1.0, 500.0));
camera_node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_CAMERA));
eo_do(camera_node,
evas_3d_node_camera_set(camera));
eo_do(root_node,
evas_3d_node_member_add(camera_node));
eo_do(camera_node,
evas_3d_node_position_set(100.0, 50.0, 20.0),
evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 20.0,
EVAS_3D_SPACE_PARENT, 0.0, 0.0, 1.0));
light = eo_add(EVAS_3D_LIGHT_CLASS, evas);
eo_do(light,
evas_3d_light_ambient_set(1.0, 1.0, 1.0, 1.0),
evas_3d_light_diffuse_set(1.0, 1.0, 1.0, 1.0),
evas_3d_light_specular_set(1.0, 1.0, 1.0, 1.0),
evas_3d_light_directional_set(EINA_TRUE));
light_node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_LIGHT));
eo_do(light_node,
evas_3d_node_light_set(light),
evas_3d_node_position_set(1000.0, 0.0, 1000.0),
evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 0.0,
EVAS_3D_SPACE_PARENT, 0.0, 1.0, 0.0));
eo_do(root_node,
evas_3d_node_member_add(light_node));
mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
material = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
eo_do(mesh,
efl_file_set(model_path, NULL),
evas_3d_mesh_frame_material_set(0, material),
evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
texture = eo_add(EVAS_3D_TEXTURE_CLASS, evas);
eo_do(texture,
evas_3d_texture_file_set(image_path, NULL),
evas_3d_texture_filter_set(EVAS_3D_TEXTURE_FILTER_NEAREST,
EVAS_3D_TEXTURE_FILTER_NEAREST),
evas_3d_texture_wrap_set(EVAS_3D_WRAP_MODE_REPEAT,
EVAS_3D_WRAP_MODE_REPEAT));
eo_do(material,
evas_3d_material_texture_set(EVAS_3D_MATERIAL_DIFFUSE, texture),
evas_3d_material_enable_set(EVAS_3D_MATERIAL_AMBIENT, EINA_TRUE),
evas_3d_material_enable_set(EVAS_3D_MATERIAL_DIFFUSE, EINA_TRUE),
evas_3d_material_enable_set(EVAS_3D_MATERIAL_SPECULAR, EINA_TRUE),
evas_3d_material_enable_set(EVAS_3D_MATERIAL_NORMAL, EINA_TRUE),
evas_3d_material_color_set(EVAS_3D_MATERIAL_AMBIENT,
0.01, 0.01, 0.01, 1.0),
evas_3d_material_color_set(EVAS_3D_MATERIAL_DIFFUSE,
1.0, 1.0, 1.0, 1.0),
evas_3d_material_color_set(EVAS_3D_MATERIAL_SPECULAR,
1.0, 1.0, 1.0, 1.0),
evas_3d_material_shininess_set(50.0));
mesh_node = eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
mesh_box_node = eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
material_box = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
eo_do(material_box, evas_3d_material_enable_set(EVAS_3D_MATERIAL_DIFFUSE, EINA_TRUE));
mesh_box = eo_add(EVAS_3D_MESH_CLASS, evas);
eo_do(mesh_box,
evas_3d_mesh_vertex_count_set(24),
evas_3d_mesh_frame_add(0),
evas_3d_mesh_vertex_assembly_set(EVAS_3D_VERTEX_ASSEMBLY_LINES),
evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_DIFFUSE),
evas_3d_mesh_frame_material_set(0, material_box));
_mesh_aabb(&mesh_box);
eo_do(root_node,
evas_3d_node_member_add(mesh_box_node));
eo_do(mesh_box_node,
evas_3d_node_mesh_add(mesh_box));
eo_do(root_node,
evas_3d_node_member_add(mesh_node));
eo_do(mesh_node,
evas_3d_node_mesh_add(mesh));
eo_do(scene,
evas_3d_scene_root_node_set(root_node),
evas_3d_scene_camera_node_set(camera_node),
evas_3d_scene_size_set(WIDTH, HEIGHT));
background = eo_add(EVAS_RECTANGLE_CLASS, evas);
eo_do(background,
evas_obj_color_set(0, 0, 0, 255),
evas_obj_size_set(WIDTH, HEIGHT),
evas_obj_visibility_set(EINA_TRUE));
image = evas_object_image_filled_add(evas);
eo_do(image,
evas_obj_size_set(WIDTH, HEIGHT),
evas_obj_visibility_set(EINA_TRUE));
evas_object_focus_set(image, EINA_TRUE);
eo_do(image, evas_obj_image_scene_set(scene));
evas_object_event_callback_add(image, EVAS_CALLBACK_KEY_DOWN, _on_key_down, root_node);
ecore_timer_add(0.01, _animate_scene, mesh_node);
ecore_main_loop_begin();
ecore_evas_free(ecore_evas);
ecore_evas_shutdown();
return 0;
}
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