/** * Example of picking nodes and meshes by screen coordinates using Evas-3D. * * Here shown which transformation should be applied to event_info of * _on_mouse_down to make them usable in evas_canvas3d_scene_pick() * and parameters which can be got from this function. * * @verbatim * gcc -o evas-3d-pick evas-3d-pick.c `pkg-config --libs --cflags efl evas ecore ecore-evas eo` -lm * @endverbatim */ #ifdef HAVE_CONFIG_H #include "config.h" #else #define PACKAGE_EXAMPLES_DIR "." #define EFL_BETA_API_SUPPORT #endif #include #include #include #include #include #include "evas-common.h" #define WIDTH 400 #define HEIGHT 400 static const char *image_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/wood.jpg"; static Ecore_Evas *ecore_evas = NULL; static Evas *evas = NULL; static Eo *background = NULL; static Eo *image = NULL; static Eo *scene = NULL; static Eo *root_node = NULL; static Eo *camera_node = NULL; static Eo *camera = NULL; static Eo *mesh_node = NULL; static Eo *mesh = NULL; static Eo *material = NULL; static Eo *texture_diffuse = NULL; static Eo *sphere = NULL; static Eina_Bool _animate_scene(void *data) { static float angle = 0.0f; angle += 0.3; evas_canvas3d_node_orientation_angle_axis_set((Evas_Canvas3D_Node *)data, angle, 0.0, 1.0, 0.0); /* Rotate */ if (angle > 360.0) angle -= 360.0f; 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); evas_object_resize(background, w, h); evas_object_resize(image, w, h); evas_object_move(image, 0, 0); } static void _on_mouse_down(void *data EINA_UNUSED, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info) { Evas_Event_Mouse_Down *ev = event_info; Evas_Real s, t; Evas_Canvas3D_Node *n; Evas_Canvas3D_Mesh *m; Eina_Bool pick; pick = evas_canvas3d_scene_pick(scene, ev->canvas.x, ev->canvas.y, &n, &m, &s, &t); if (pick) printf("Picked : "); else printf("Not picked : "); printf("output(%d, %d) canvas(%d, %d) texcoord(%f, %f) " "node(%p) mesh(%p)\n", ev->output.x, ev->output.y, ev->canvas.x, ev->canvas.y, s, t, n, m); } int main(void) { // Unless Evas 3D supports Software renderer, we force use of the gl backend. 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); /* Add a scene object .*/ scene = efl_add(EVAS_CANVAS3D_SCENE_CLASS, evas); /* Add the root node for the scene. */ root_node = efl_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_type_set(efl_added, EVAS_CANVAS3D_NODE_TYPE_NODE)); /* Add the camera. */ camera = efl_add(EVAS_CANVAS3D_CAMERA_CLASS, evas); evas_canvas3d_camera_projection_perspective_set(camera, 30.0, 1.0, 1.0, 100.0); camera_node = efl_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_type_set(efl_added, EVAS_CANVAS3D_NODE_TYPE_CAMERA)); evas_canvas3d_node_camera_set(camera_node, camera); evas_canvas3d_node_position_set(camera_node, 0.0, 0.0, 2.5); evas_canvas3d_node_look_at_set(camera_node, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 0.0, 0.0, EVAS_CANVAS3D_SPACE_PARENT, 0.0, 1.0, 0.0); evas_canvas3d_node_member_add(root_node, camera_node); sphere = efl_add(EVAS_CANVAS3D_PRIMITIVE_CLASS, evas); evas_canvas3d_primitive_form_set(sphere, EVAS_CANVAS3D_MESH_PRIMITIVE_SPHERE); evas_canvas3d_primitive_precision_set(sphere, 50); mesh = efl_add(EVAS_CANVAS3D_MESH_CLASS, evas); evas_canvas3d_mesh_from_primitive_set(mesh, 0, sphere); material = efl_add(EVAS_CANVAS3D_MATERIAL_CLASS, evas); texture_diffuse = efl_add(EVAS_CANVAS3D_TEXTURE_CLASS, evas); efl_file_set(texture_diffuse, image_path, NULL); evas_canvas3d_texture_filter_set(texture_diffuse, EVAS_CANVAS3D_TEXTURE_FILTER_LINEAR, EVAS_CANVAS3D_TEXTURE_FILTER_LINEAR); evas_canvas3d_material_texture_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_DIFFUSE, texture_diffuse); evas_canvas3d_material_enable_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_AMBIENT, EINA_TRUE); evas_canvas3d_material_enable_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_DIFFUSE, EINA_TRUE); evas_canvas3d_material_enable_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_SPECULAR, EINA_TRUE); evas_canvas3d_material_color_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_AMBIENT, 0.01, 0.01, 0.01, 1.0); evas_canvas3d_material_color_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_DIFFUSE, 1.0, 1.0, 1.0, 1.0); evas_canvas3d_material_color_set(material, EVAS_CANVAS3D_MATERIAL_ATTRIB_SPECULAR, 1.0, 1.0, 1.0, 1.0); evas_canvas3d_material_shininess_set(material, 50.0); mesh_node = efl_add(EVAS_CANVAS3D_NODE_CLASS, evas, evas_canvas3d_node_type_set(efl_added, EVAS_CANVAS3D_NODE_TYPE_MESH)); evas_canvas3d_node_member_add(root_node, mesh_node); evas_canvas3d_node_mesh_add(mesh_node, mesh); evas_canvas3d_mesh_shader_mode_set(mesh, EVAS_CANVAS3D_SHADER_MODE_DIFFUSE); evas_canvas3d_mesh_frame_material_set(mesh, 0, material); /* Set up scene. */ evas_canvas3d_scene_root_node_set(scene, root_node); evas_canvas3d_scene_camera_node_set(scene, camera_node); evas_canvas3d_scene_size_set(scene, WIDTH, HEIGHT); /* Add evas objects. */ background = efl_add(EFL_CANVAS_RECTANGLE_CLASS, evas); efl_gfx_color_set(background, 0, 0, 0, 255); efl_gfx_entity_size_set(background, EINA_SIZE2D(WIDTH, HEIGHT)); efl_gfx_entity_visible_set(background, EINA_TRUE); image = efl_add(EFL_CANVAS_SCENE3D_CLASS, evas); efl_canvas_scene3d_set(image, scene); efl_gfx_entity_size_set(image, EINA_SIZE2D(WIDTH, HEIGHT)); efl_gfx_entity_visible_set(image, EINA_TRUE); evas_object_event_callback_add(image, EVAS_CALLBACK_MOUSE_DOWN, _on_mouse_down, NULL); ecore_timer_add(0.01, _animate_scene, mesh_node); ecore_main_loop_begin(); ecore_evas_free(ecore_evas); ecore_evas_shutdown(); return 0; }