239 lines
7.5 KiB
C
239 lines
7.5 KiB
C
/**
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* Example illustrating usage of fog effect.
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*
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* @verbatim
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* gcc -o evas-3d-fog evas-3d-fog.c `pkg-config --libs --cflags efl evas ecore ecore-evas eo`-lm
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* @endverbatim
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*/
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#define EFL_EO_API_SUPPORT
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#define EFL_BETA_API_SUPPORT
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#include <math.h>
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#include <Eo.h>
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#include <Evas.h>
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#include <Ecore.h>
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#include <Ecore_Evas.h>
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#define WIDTH 1024
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#define HEIGHT 1024
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#define FOG_COLOR 0.5, 0.5, 0.5
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#define FOG_FACTOR 0.2
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static double pi = 3.14159265359;
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typedef struct _Scene_Data
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{
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Eo *scene;
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Eo *root_node;
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Eo *camera_node;
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Eo *light_node;
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Eo *mesh_node;
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Eo *mesh_node1;
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Eo *animation_node;
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Eo *sphere;
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Eo *camera;
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Eo *light;
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Eo *mesh;
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Eo *mesh1;
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Eo *material;
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} Scene_Data;
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Ecore_Evas *ecore_evas = NULL;
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Evas *evas = NULL;
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Eo *background = NULL;
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Eo *image = NULL;
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static void
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_on_delete(Ecore_Evas *ee EINA_UNUSED)
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{
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ecore_main_loop_quit();
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}
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static void
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_on_canvas_resize(Ecore_Evas *ee)
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{
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int w, h;
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ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
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evas_object_resize(background, w, h);
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efl_gfx_size_set(background, w, h);
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efl_gfx_size_set(image, w, h);
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}
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static Eina_Bool
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_animate_scene(void *data)
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{
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static float angle = 0.0f;
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Scene_Data *scene = (Scene_Data *)data;
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angle += 0.5;
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evas_canvas3d_node_orientation_angle_axis_set(scene->animation_node, angle, 0.0, 1.0, 0.0);
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if (angle > 360.0) angle -= 360.0f;
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return EINA_TRUE;
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}
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static void
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_camera_setup(Scene_Data *data)
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{
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data->camera = eo_add(EVAS_CANVAS3D_CAMERA_CLASS, evas);
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evas_canvas3d_camera_projection_perspective_set(data->camera, 60.0, 1.0, 2.0, 50.0);
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data->camera_node =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_CAMERA));
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evas_canvas3d_node_camera_set(data->camera_node, data->camera);
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evas_canvas3d_node_position_set(data->camera_node, 0.0, 0.0, 7.0);
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evas_canvas3d_node_look_at_set(data->camera_node, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 0.0, 0.0, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 1.0, 0.0);
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evas_canvas3d_node_member_add(data->root_node, data->camera_node);
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}
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static void
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_light_setup(Scene_Data *data)
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{
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data->light = eo_add(EVAS_CANVAS3D_LIGHT_CLASS, evas);
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evas_canvas3d_light_ambient_set(data->light, 0.2, 0.2, 0.2, 1.0);
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evas_canvas3d_light_diffuse_set(data->light, 1.0, 1.0, 1.0, 1.0);
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evas_canvas3d_light_specular_set(data->light, 1.0, 1.0, 1.0, 1.0);
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data->light_node =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_LIGHT));
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evas_canvas3d_node_light_set(data->light_node, data->light);
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evas_canvas3d_node_position_set(data->light_node, 0.0, 0.0, 10.0);
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evas_canvas3d_node_look_at_set(data->light_node, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 0.0, 0.0, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 1.0, 0.0);
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evas_canvas3d_node_member_add(data->root_node, data->light_node);
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}
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static void
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_set_ball(Eo *mesh, Eo *sphere, Evas_Canvas3D_Material *material)
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{
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evas_canvas3d_mesh_from_primitive_set(mesh, 0, sphere);
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evas_canvas3d_mesh_shade_mode_set(mesh, EVAS_CANVAS3D_SHADE_MODE_PHONG);
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evas_canvas3d_mesh_frame_material_set(mesh, 0, material);
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}
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static void
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_mesh_setup(Scene_Data *data)
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{
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data->material = eo_add(EVAS_CANVAS3D_MATERIAL_CLASS, evas);
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evas_canvas3d_material_enable_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_AMBIENT, EINA_TRUE);
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evas_canvas3d_material_enable_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_DIFFUSE, EINA_TRUE);
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evas_canvas3d_material_enable_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_SPECULAR, EINA_TRUE);
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evas_canvas3d_material_color_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_AMBIENT, 0.2, 0.2, 0.2, 1.0);
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evas_canvas3d_material_color_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_DIFFUSE, 0.8, 0.8, 0.8, 1.0);
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evas_canvas3d_material_color_set(data->material, EVAS_CANVAS3D_MATERIAL_ATTRIB_SPECULAR, 1.0, 1.0, 1.0, 1.0);
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evas_canvas3d_material_shininess_set(data->material, 100.0);
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data->sphere = eo_add(EVAS_CANVAS3D_PRIMITIVE_CLASS, evas);
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evas_canvas3d_primitive_form_set(data->sphere, EVAS_CANVAS3D_MESH_PRIMITIVE_SPHERE);
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evas_canvas3d_primitive_precision_set(data->sphere, 50);
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data->mesh = eo_add(EVAS_CANVAS3D_MESH_CLASS, evas);
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data->mesh1 = eo_add(EVAS_CANVAS3D_MESH_CLASS, evas);
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_set_ball(data->mesh, data->sphere, data->material);
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_set_ball(data->mesh1, data->sphere, data->material);
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data->animation_node =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_NODE));
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data->mesh_node =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_MESH));
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evas_canvas3d_node_member_add(data->animation_node, data->mesh_node);
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evas_canvas3d_node_member_add(data->root_node, data->animation_node);
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evas_canvas3d_node_mesh_add(data->mesh_node, data->mesh);
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evas_canvas3d_node_position_set(data->mesh_node, 0.0, 0.0, 3.0);
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data->mesh_node1 =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_MESH));
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evas_canvas3d_node_member_add(data->root_node, data->mesh_node1);
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evas_canvas3d_node_mesh_add(data->mesh_node1, data->mesh1);
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evas_canvas3d_node_scale_set(data->mesh_node1, 3, 3, 3);
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evas_canvas3d_mesh_fog_enable_set(data->mesh, EINA_TRUE);
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evas_canvas3d_mesh_fog_color_set(data->mesh, FOG_COLOR, FOG_FACTOR);
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evas_canvas3d_mesh_fog_enable_set(data->mesh1, EINA_TRUE);
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evas_canvas3d_mesh_fog_color_set(data->mesh1, FOG_COLOR, FOG_FACTOR);
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}
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static void
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_scene_setup(Scene_Data *data)
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{
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data->scene = eo_add(EVAS_CANVAS3D_SCENE_CLASS, evas);
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evas_canvas3d_scene_size_set(data->scene, WIDTH, HEIGHT);
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evas_canvas3d_scene_background_color_set(data->scene, FOG_COLOR, 1);
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data->root_node =
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eo_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_constructor(eoid, EVAS_CANVAS3D_NODE_TYPE_NODE));
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_camera_setup(data);
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_light_setup(data);
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_mesh_setup(data);
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evas_canvas3d_scene_root_node_set(data->scene, data->root_node);
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evas_canvas3d_scene_camera_node_set(data->scene, data->camera_node);
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}
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int
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main(void)
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{
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//Unless Evas 3D supports Software renderer, we set gl backened forcely.
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setenv("ECORE_EVAS_ENGINE", "opengl_x11", 1);
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Scene_Data data;
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Ecore_Animator *anim;
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if (!ecore_evas_init()) return 0;
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ecore_evas = ecore_evas_new("opengl_x11", 10, 10, WIDTH, HEIGHT, NULL);
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if (!ecore_evas) return 0;
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ecore_evas_callback_delete_request_set(ecore_evas, _on_delete);
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ecore_evas_callback_resize_set(ecore_evas, _on_canvas_resize);
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ecore_evas_show(ecore_evas);
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evas = ecore_evas_get(ecore_evas);
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_scene_setup(&data);
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/* Add a background rectangle objects. */
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background = eo_add(EVAS_RECTANGLE_CLASS, evas);
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efl_gfx_color_set(background, 0, 0, 0, 255);
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efl_gfx_size_set(background, WIDTH, HEIGHT);
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efl_gfx_visible_set(background, EINA_TRUE);
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/* Add an image object for 3D scene rendering. */
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image = evas_object_image_filled_add(evas);
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efl_gfx_size_set(image, WIDTH, HEIGHT);
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efl_gfx_visible_set(image, EINA_TRUE);
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/* Set the image object as render target for 3D scene. */
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evas_obj_image_scene_set(image, data.scene);
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/* Add animation timer callback. */
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ecore_animator_frametime_set(0.008);
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anim = ecore_animator_add(_animate_scene, &data);
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/* Enter main loop. */
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ecore_main_loop_begin();
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ecore_evas_free(ecore_evas);
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ecore_evas_shutdown();
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ecore_animator_del(anim);
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return 0;
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}
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