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

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/**
* This example illustrating use of shadows in the scene and callbacks(clicked, collision).
* Model and cube are clickable. Model detects collision with sphere.
* Cube detects collision with sphere, model and cone.
* @see evas_3d_scene_shadows_enable_set(Eina_Bool _shadows_enabled)
* @see evas_3d_object_callback_register
*
* @verbatim
* gcc -o evas-3d-shadows evas-3d-shadows.c evas-3d-primitives.c `pkg-config --libs --cflags efl evas ecore ecore-evas eo eina` -lm
* @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 <Eina.h>
#include <math.h>
#include "evas-3d-primitives.h"
#include "evas-common.h"
#define WIDTH 1024
#define HEIGHT 1024
#define STEP 0.1
#define BG_COLOR 0.2, 0.2, 0.2
#define AMBIENT_LIGHT 0.2, 0.2, 0.2
#define DIFFUSE_LIGHT 1.0, 1.0, 1.0
#define SPECULAR_LIGHT 1.0, 1.0, 1.0
static const char *model_path = PACKAGE_EXAMPLES_DIR EVAS_MODEL_FOLDER "/sonic.md2";
static const vec2 tex_scale = {1, 1};
static const vec2 fence_tex_scale = {80, 6};
Ecore_Evas *ecore_evas = NULL;
Evas *evas = NULL;
Eo *background = NULL;
Eo *image = NULL;
Evas_3D_Node *choosed_node = NULL;
Eina_Bool
_cb_clicked(void *data EINA_UNUSED, Eo *obj EINA_UNUSED, const Eo_Event_Description *desc EINA_UNUSED, void *event_info)
{
Eina_List *meshes = NULL, *l;
Evas_3D_Mesh *m;
eo_do((Evas_3D_Node *)event_info, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_DIFFUSE));
}
if (choosed_node != (Evas_3D_Node *)event_info)
{
eo_do(choosed_node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
choosed_node = (Evas_3D_Node *)event_info;
}
return EINA_TRUE;
}
Eina_Bool
_cb_collision(void *data EINA_UNUSED, Eo *obj EINA_UNUSED, const Eo_Event_Description *desc EINA_UNUSED, void *event_info)
{
Eina_List *meshes = NULL, *l;
Evas_3D_Mesh *m;
eo_do((Evas_3D_Node *)event_info, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_DIFFUSE));
}
return EINA_TRUE;
}
typedef struct _Body_3D
{
Eo *material;
Eo *mesh;
Eo *node;
} Body_3D;
typedef struct _Scene_Data
{
Eo *scene;
Eo *root_node;
Eo *camera_node;
Eo *camera;
Eo *light_node;
Eo *light;
Body_3D sphere;
Body_3D cube;
Body_3D square;
Body_3D cylinder;
Body_3D model;
Body_3D cone;
Body_3D fence;
} Scene_Data;
static void
_show_help()
{
fprintf(stdout, "Press 'w'/'s' key to move up/down object\n");
fprintf(stdout, "Press 'a'/'d' key to move left/right object\n");
fprintf(stdout, "Press 'q'/'e' key to to move near/far object\n");
fprintf(stdout, "Cude and model can be moved.\n");
fprintf(stdout, "Cube detects intersection with model, sphere, cone\n");
fprintf(stdout, "Model detects intersection with sphere\n");
}
static Eina_Bool
_animate_scene(void *data)
{
static int frame = 0;
Body_3D *body = (Body_3D *)data;
eo_do(body->node, evas_3d_node_mesh_frame_set(body->mesh, frame));
/*frame += 32;*/
if (frame > 256 * 20) frame = 0;
return EINA_TRUE;
}
static void
_on_delete(Ecore_Evas *ee EINA_UNUSED)
{
ecore_main_loop_quit();
}
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 void
_body_material_set(Body_3D *body, float r, float g, float b)
{
body->material = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
eo_do(body->material,
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_color_set(EVAS_3D_MATERIAL_AMBIENT, r, g, b, 1.0),
evas_3d_material_color_set(EVAS_3D_MATERIAL_DIFFUSE, r, g, b, 1.0),
evas_3d_material_color_set(EVAS_3D_MATERIAL_SPECULAR, 1.0, 1.0, 1.0, 1.0),
evas_3d_material_shininess_set(100.0));
eo_do(body->mesh,
evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG),
evas_3d_mesh_frame_material_set(0, body->material));
}
static void
_sphere_setup(Body_3D *sphere)
{
sphere->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_sphere_frame(sphere->mesh, 0, 50, tex_scale);
_body_material_set(sphere, 1, 0.0, 0.0);
sphere->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH),
evas_3d_node_position_set(3.0, 3.0, 0.0));
eo_do(sphere->node, evas_3d_node_mesh_add(sphere->mesh));
}
static void
_cone_setup(Body_3D *cone)
{
cone->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_cone_frame(cone->mesh, 0, 100, tex_scale);
_body_material_set(cone, 0.8, 0.5, 0.5);
cone->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(cone->node, evas_3d_node_mesh_add(cone->mesh),
evas_3d_node_position_set(-5.0, -1.0, -3.0));
}
static void
_cylinder_setup(Body_3D *cylinder)
{
cylinder->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_cylinder_frame(cylinder->mesh, 0, 50, tex_scale);
_body_material_set(cylinder, 0.0, 0.0, 1.0);
cylinder->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(cylinder->node, evas_3d_node_mesh_add(cylinder->mesh),
evas_3d_node_position_set(-2.0, 3.0, 1.0));
}
static void
_fence_setup(Body_3D *fence)
{
Eo *texture = eo_add(EVAS_3D_TEXTURE_CLASS, evas);
eo_do(texture,
evas_3d_texture_file_set(PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/grid.png", 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 *texture1 = eo_add(EVAS_3D_TEXTURE_CLASS, evas);
eo_do(texture1,
evas_3d_texture_file_set(PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/grid_n.png", 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));
fence->material = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
eo_do(fence->material,
evas_3d_material_texture_set(EVAS_3D_MATERIAL_DIFFUSE, texture),
evas_3d_material_texture_set(EVAS_3D_MATERIAL_AMBIENT, 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_texture_set(EVAS_3D_MATERIAL_NORMAL, texture1),
evas_3d_material_shininess_set(100.0));
fence->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_cylinder_frame(fence->mesh, 0, 50, fence_tex_scale);
eo_do(fence->mesh,
evas_3d_mesh_frame_material_set(0, fence->material),
evas_3d_mesh_alpha_func_set(EVAS_3D_COMPARISON_GREATER, 0),
evas_3d_mesh_alpha_test_enable_set(EINA_TRUE),
evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_NORMAL_MAP));
fence->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(fence->node, evas_3d_node_mesh_add(fence->mesh),
evas_3d_node_scale_set(7.0, 3.0, 7.0),
evas_3d_node_position_set(0.0, 0.5, -5.0));
}
static void
_square_setup(Body_3D *square)
{
square->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_square_frame(square->mesh, 0);
_body_material_set(square, 0.4, 0.4, 0.4);
square->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(square->node, evas_3d_node_mesh_add(square->mesh),
evas_3d_node_position_set(0.0, -1.0, 0.0),
evas_3d_node_scale_set(30.0, 30.0, 30.0),
evas_3d_node_orientation_angle_axis_set(90.0, 1.0, 0.0, 0.0));
}
static void
_box_setup(Body_3D *box)
{
box->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
evas_3d_add_cube_frame(box->mesh, 0);
_body_material_set(box, 0, 1, 0);
box->node = eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(box->node, evas_3d_node_mesh_add(box->mesh),
evas_3d_node_position_set(5.0, 0.0, -3.0));
}
static void
_model_setup(Body_3D *model)
{
Eo *texture = eo_add(EVAS_3D_TEXTURE_CLASS, evas);
eo_do(texture,
evas_3d_texture_file_set(PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/sonic.png", 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));
model->material = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
eo_do(model->material,
evas_3d_material_texture_set(EVAS_3D_MATERIAL_DIFFUSE, texture),
evas_3d_material_texture_set(EVAS_3D_MATERIAL_AMBIENT, 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_shininess_set(100.0));
model->mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
eo_do(model->mesh,
efl_file_set(model_path, NULL),
evas_3d_mesh_frame_material_set(0, model->material),
evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
model->node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
eo_do(model->node, evas_3d_node_mesh_add(model->mesh),
evas_3d_node_scale_set(0.1, 0.1, 0.1),
evas_3d_node_orientation_angle_axis_set(120.0, -0.577, -0.577, -0.577));
}
static void
_camera_setup(Scene_Data *data)
{
data->camera = eo_add(EVAS_3D_CAMERA_CLASS, evas);
eo_do(data->camera,
evas_3d_camera_projection_perspective_set(50.0, 1.0, 2.0, 50.0));
data->camera_node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_CAMERA));
eo_do(data->camera_node,
evas_3d_node_camera_set(data->camera),
evas_3d_node_position_set(0.0, 6.0, 12.0),
evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 3.0, 0.0,
EVAS_3D_SPACE_PARENT, 0.0, 5.0, 0.0));
eo_do(data->root_node, evas_3d_node_member_add(data->camera_node));
}
static void
_light_setup(Scene_Data *data)
{
data->light = eo_add(EVAS_3D_LIGHT_CLASS, evas);
eo_do(data->light,
evas_3d_light_ambient_set(AMBIENT_LIGHT, 1.0),
evas_3d_light_diffuse_set(DIFFUSE_LIGHT, 1.0),
evas_3d_light_specular_set(SPECULAR_LIGHT, 1.0),
evas_3d_light_spot_cutoff_set(20),
evas_3d_light_projection_perspective_set(40.0, 1.0, 2.0, 1000.0));
data->light_node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_LIGHT));
eo_do(data->light_node,
evas_3d_node_light_set(data->light),
evas_3d_node_position_set(50.0, 50.0, 20.0),
evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 15.0, 0.0, -5.0,
EVAS_3D_SPACE_PARENT, 0.0, 0.0, 1.0));
eo_do(data->root_node, evas_3d_node_member_add(data->light_node));
}
static void
_scene_setup(Scene_Data *data)
{
data->scene = eo_add(EVAS_3D_SCENE_CLASS, evas);
eo_do(data->scene,
evas_3d_scene_size_set(WIDTH, HEIGHT);
evas_3d_scene_background_color_set(BG_COLOR, 1));
data->root_node =
eo_add(EVAS_3D_NODE_CLASS, evas,
evas_3d_node_constructor(EVAS_3D_NODE_TYPE_NODE));
_camera_setup(data);
_light_setup(data);
_box_setup(&data->cube);
_sphere_setup(&data->sphere);
_cylinder_setup(&data->cylinder);
_square_setup(&data->square);
_model_setup(&data->model);
_cone_setup(&data->cone);
_fence_setup(&data->fence);
eo_do(data->root_node,
evas_3d_node_member_add(data->sphere.node),
evas_3d_node_member_add(data->cube.node),
evas_3d_node_member_add(data->cylinder.node),
evas_3d_node_member_add(data->square.node),
evas_3d_node_member_add(data->model.node),
evas_3d_node_member_add(data->cone.node),
evas_3d_node_member_add(data->fence.node));
eo_do(data->scene,
evas_3d_scene_root_node_set(data->root_node),
evas_3d_scene_camera_node_set(data->camera_node),
evas_3d_scene_shadows_enable_set(EINA_TRUE));
}
static void
_on_key_down(void *data EINA_UNUSED, Evas *e EINA_UNUSED, Evas_Object *eo EINA_UNUSED, void *event_info)
{
Evas_Event_Key_Down *ev = event_info;
if (!strcmp("w", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x, y + STEP, z));
}
else if(!strcmp("s", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x, y - STEP, z));
}
else if(!strcmp("a", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x - STEP, y, z));
}
else if(!strcmp("d", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x + STEP, y, z));
}
else if(!strcmp("q", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x, y, z - STEP));
}
else if(!strcmp("e", ev->key))
{
Evas_Real x, y, z;
eo_do(choosed_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &x, &y, &z));
eo_do(choosed_node, evas_3d_node_position_set(x, y, z + STEP));
}
else
{
_show_help();
}
}
static void _init(Scene_Data *data)
{
Eina_List *meshes = NULL, *l;
Evas_3D_Mesh *m;
eo_do(data->sphere.node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
eo_do(data->cube.node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
eo_do(data->cylinder.node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
eo_do(data->model.node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
eo_do(data->cone.node, meshes = (Eina_List *)evas_3d_node_mesh_list_get());
EINA_LIST_FOREACH(meshes, l, m)
{
eo_do(m, evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
}
}
static void
_on_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *eo EINA_UNUSED, void *event_info)
{
Scene_Data *d = (Scene_Data *)data;
Evas_Event_Mouse_Down *ev = event_info;
Evas_3D_Node *n = NULL;
Evas_3D_Mesh *m = NULL;
Evas_Real s, t;
if (ev->button == 3)
{
_init(d);
return;
}
eo_do(d->scene, evas_3d_scene_pick(ev->canvas.x, ev->canvas.y, &n, &m, &s, &t));
}
int
main(void)
{
Scene_Data data;
Ecore_Animator *anim;
Eina_List *nodes1 = NULL, *nodes2 = NULL;
//Unless Evas 3D supports Software renderer, we set gl backened forcely.
setenv("ECORE_EVAS_ENGINE", "opengl_x11", 1);
if (!ecore_evas_init()) return 0;
ecore_evas = ecore_evas_new(NULL, 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_setup(&data);
/* Add a background rectangle objects. */
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));
/* Add an image object for 3D scene rendering. */
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);
/* Set the image object as render target for 3D scene. */
eo_do(image, evas_obj_image_scene_set(data.scene));
nodes1 = eina_list_append(nodes1, data.sphere.node);
nodes2 = eina_list_append(nodes2, data.sphere.node);
nodes2 = eina_list_append(nodes2, data.model.node);
nodes2 = eina_list_append(nodes2, data.cone.node);
/*Set callbacks*/
eo_do(data.cube.node, eo_event_callback_add(EVAS_3D_OBJECT_EVENT_CLICKED, _cb_clicked, NULL));
eo_do(data.cube.node, eo_event_callback_add(EVAS_3D_OBJECT_EVENT_COLLISION, _cb_collision, nodes2));
eo_do(data.model.node, eo_event_callback_add(EVAS_3D_OBJECT_EVENT_CLICKED, _cb_clicked, NULL));
eo_do(data.model.node, eo_event_callback_add(EVAS_3D_OBJECT_EVENT_COLLISION, _cb_collision, nodes1));
evas_object_event_callback_add(image, EVAS_CALLBACK_MOUSE_DOWN, _on_mouse_down, &data);
evas_object_event_callback_add(image, EVAS_CALLBACK_KEY_DOWN, _on_key_down, &data);
/* Add animator. */
ecore_animator_frametime_set(0.008);
anim = ecore_animator_add(_animate_scene, &data.model);
/* Enter main loop. */
ecore_main_loop_begin();
ecore_animator_del(anim);
eina_list_free(nodes1);
eina_list_free(nodes2);
ecore_evas_free(ecore_evas);
ecore_evas_shutdown();
return 0;
}
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