diff --git a/src/examples/evas/.gitignore b/src/examples/evas/.gitignore index 405e5bb5fd..879b07dfe8 100644 --- a/src/examples/evas/.gitignore +++ b/src/examples/evas/.gitignore @@ -22,4 +22,5 @@ /evas_3d_pick /evas_3d_proxy /evas_cxx_rectangle -/evas_3d_aabb \ No newline at end of file +/evas_3d_aabb +/evas_3d_frustum diff --git a/src/examples/evas/Makefile.am b/src/examples/evas/Makefile.am index 1f2aadef41..861d8ed086 100644 --- a/src/examples/evas/Makefile.am +++ b/src/examples/evas/Makefile.am @@ -197,6 +197,11 @@ evas_3d_md2_SOURCES = evas-3d-md2.c evas_3d_md2_LDADD = $(ECORE_EVAS_COMMON_LDADD) @EFL_PTHREAD_LIBS@ evas_3d_md2_CPPFLAGS = $(ECORE_EVAS_COMMON_CPPFLAGS) +EXTRA_PROGRAMS += evas_3d_frustum +evas_3d_frustum_SOURCES = evas-3d-frustum.c +evas_3d_frustum_LDADD = $(ECORE_EVAS_COMMON_LDADD) @EFL_PTHREAD_LIBS@ +evas_3d_frustum_CPPFLAGS = $(ECORE_EVAS_COMMON_CPPFLAGS) + EXTRA_PROGRAMS += evas_3d_aabb evas_3d_aabb_SOURCES = evas-3d-aabb.c evas_3d_aabb_LDADD = $(ECORE_EVAS_COMMON_LDADD) @EFL_PTHREAD_LIBS@ diff --git a/src/examples/evas/eagle.md2 b/src/examples/evas/eagle.md2 new file mode 100644 index 0000000000..c72647a4cb Binary files /dev/null and b/src/examples/evas/eagle.md2 differ diff --git a/src/examples/evas/eagle.png b/src/examples/evas/eagle.png new file mode 100644 index 0000000000..503ca1fd8a Binary files /dev/null and b/src/examples/evas/eagle.png differ diff --git a/src/examples/evas/evas-3d-frustum.c b/src/examples/evas/evas-3d-frustum.c new file mode 100644 index 0000000000..d5c67ef8a6 --- /dev/null +++ b/src/examples/evas/evas-3d-frustum.c @@ -0,0 +1,256 @@ +/* + * This example shows how to work frustum culling. + * Use keys Up/Down for moving far plane of frustum. + * Use keys Left/Right for changing camera view. + * See in terminal output value of z coordinate of far plane of frustum + * and check OBB's points inside frustum. + * @see evas_3d_node_obb_frustum_check. + * Compile with "gcc -o evas-3d-frustum evas-3d-frustum.c `pkg-config --libs --cflags evas ecore ecore-evas eo`" + */ + +#define EFL_EO_API_SUPPORT +#define EFL_BETA_API_SUPPORT + +#include +#include +#include +#include + +#define WIDTH 800 +#define HEIGHT 600 + +typedef struct _Scene_Data +{ + Eo *root_node; + Eo *camera_node; + Eo *light_node; + Eo *mesh_node_model; + Eo *scene; + Eo *camera; + Eo *light; + Eo *mesh_model; + Eo *material_model; + Eo *texture_model; +} Scene_Data; + +Evas *evas; +Evas_Object *background,*image; +Evas_Real fleft = -5, fright = 5, fbottom = -5, fup = 5, fnear = 20, ffar = 40; + +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_key_down(void *data, Evas *e EINA_UNUSED, Evas_Object *eo EINA_UNUSED, void *event_info) +{ + + Scene_Data *scene = (Scene_Data *)data; + Evas_Event_Key_Down *ev = event_info; + int frustum; + + if (!strcmp("Up", ev->key)) + { + ffar += 5; + eo_do(scene->camera, evas_3d_camera_projection_frustum_set(fleft, fright, fbottom, fup, fnear, ffar)); + eo_do(scene->mesh_node_model, + frustum = evas_3d_node_obb_frustum_check(scene->camera_node)); + fprintf(stdout, "far - %f frustum - %d \n", ffar, frustum); + } + else if(!strcmp("Down", ev->key)) + { + ffar -= 5; + eo_do(scene->camera, evas_3d_camera_projection_frustum_set(fleft, fright, fbottom, fup, fnear, ffar)); + eo_do(scene->mesh_node_model, + frustum = evas_3d_node_obb_frustum_check(scene->camera_node)); + fprintf(stdout, "far - %f frustum - %d \n", ffar, frustum); + } + else if(!strcmp("Return", ev->key)) + { + eo_do(scene->mesh_node_model, + frustum = evas_3d_node_obb_frustum_check(scene->camera_node)); + fprintf(stdout, "far - %f frustum - %d \n", ffar, frustum); + } + else if (!strcmp("Left", ev->key)) + { + eo_do(scene->camera_node, evas_3d_node_position_set(50.0, 0.0, 0.0), + evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 0.0, EVAS_3D_SPACE_PARENT, 0.0, 0.0, 1.0)); + fprintf(stdout, "Changed position and view of camera\n"); + } + else if (!strcmp("Right", ev->key)) + { + eo_do(scene->camera_node, evas_3d_node_position_set(0.0, 0.0, 50.0); + 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)); + fprintf(stdout, "Changed position and view of camera\n"); + } + else + fprintf(stdout, "Press Right/Left/Up/Bottom keys\n"); +} + +static Eina_Bool +_animate_scene_model(void *data) +{ + static int frame = 0; + Scene_Data *scene = (Scene_Data *)data; + + eo_do(scene->mesh_node_model, + evas_3d_node_mesh_frame_set(scene->mesh_model, frame), + evas_3d_node_orientation_angle_axis_set(90, 1.0, 0.0, 0.0)); + frame += 20; + + if (frame > 256 * 18) frame = 0; + + return ECORE_CALLBACK_RENEW; +} + +static void +_camera_setup(Scene_Data *data) +{ + data->camera = eo_add(EVAS_3D_CAMERA_CLASS, evas); + data->camera_node = eo_add_custom(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, 0.0, 50.0); + 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(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( 0.2, 0.2, 0.2, 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)); + + data->light_node = eo_add_custom(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(0.0, 0.0, 0.0), + 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(data->root_node, evas_3d_node_member_add(data->light_node)); +} + +static void +_mesh_setup_model(Scene_Data *data) +{ + data->mesh_model = eo_add(EVAS_3D_MESH_CLASS, evas); + data->material_model = eo_add(EVAS_3D_MATERIAL_CLASS, evas); + data->texture_model = eo_add(EVAS_3D_TEXTURE_CLASS, evas); + + eo_do(data->texture_model, + evas_3d_texture_file_set("eagle.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_do(data->material_model, + evas_3d_material_enable_set(EVAS_3D_MATERIAL_NORMAL, EINA_TRUE), + 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_texture_set( EVAS_3D_MATERIAL_DIFFUSE, data->texture_model), + evas_3d_material_shininess_set(100.0)); + + eo_do(data->mesh_model, + evas_3d_mesh_file_set(EVAS_3D_MESH_FILE_TYPE_MD2, "eagle.md2", NULL), + evas_3d_mesh_frame_material_set(0, data->material_model), + evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_DIFFUSE)); +} + +static void +_scene_setup(Scene_Data *data) +{ + data->scene = eo_add(EVAS_3D_SCENE_CLASS, evas); + + data->root_node = eo_add_custom(EVAS_3D_NODE_CLASS, evas, + evas_3d_node_constructor(EVAS_3D_NODE_TYPE_NODE)); + _camera_setup(data); + _light_setup(data); + _mesh_setup_model(data); + + data->mesh_node_model = eo_add_custom(EVAS_3D_NODE_CLASS, evas, + evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH)); + eo_do(data->mesh_node_model, + evas_3d_node_position_set(0, 0, 0); + evas_3d_node_scale_set(0.3, 0.3, 0.3), + evas_3d_node_orientation_angle_axis_set(90, 1.0, 1.0, 0.0)); + eo_do(data->root_node, evas_3d_node_member_add(data->mesh_node_model)); + eo_do(data->mesh_node_model, evas_3d_node_mesh_add(data->mesh_model)); + + eo_do(data->scene, + evas_3d_scene_size_set( WIDTH, HEIGHT), + evas_3d_scene_background_color_set(0.5, 0.5, 0.5, 0.0), + evas_3d_scene_root_node_set(data->root_node); + evas_3d_scene_camera_node_set(data->camera_node)); +} + +int +main(void) +{ + Scene_Data data; + + Ecore_Evas *ecore_evas; + + if (!ecore_evas_init()) return 0; + + setenv("ECORE_EVAS_ENGINE", "opengl_x11", 1); + + ecore_evas = ecore_evas_new(NULL, 0, 0, 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); + + background = evas_object_rectangle_add(evas); + evas_object_color_set(background, 0, 0, 0, 255); + evas_object_move(background, 0, 0); + evas_object_resize(background, WIDTH, HEIGHT); + evas_object_show(background); + + image = evas_object_image_filled_add(evas); + evas_object_move(image, 0, 0); + evas_object_resize(image, WIDTH, HEIGHT); + evas_object_show(image); + + evas_object_focus_set(image, EINA_TRUE); + eo_do(image, evas_obj_image_scene_set(data.scene)); + + ecore_timer_add(0.1, _animate_scene_model, &data); + + evas_object_event_callback_add(image, EVAS_CALLBACK_KEY_DOWN, _on_key_down, &data); + ecore_main_loop_begin(); + + ecore_evas_free(ecore_evas); + ecore_evas_shutdown(); + + return 0; +} diff --git a/src/lib/evas/canvas/evas_3d_node.c b/src/lib/evas/canvas/evas_3d_node.c index 27a888c7a0..558a339492 100644 --- a/src/lib/evas/canvas/evas_3d_node.c +++ b/src/lib/evas/canvas/evas_3d_node.c @@ -1378,4 +1378,99 @@ _evas_3d_node_bounding_box_get(Eo *obj EINA_UNUSED, Evas_3D_Node_Data *pd, Evas_ if (z2) *z2 = pd->aabb.p1.z; } +EOLIAN static int +_evas_3d_node_obb_frustum_check(Eo *obj EINA_UNUSED, Evas_3D_Node_Data *pd, Evas_3D_Node *camera_node) +{ + Evas_Mat4 matrix_eye; + Evas_Mat4 matrix_local_to_world; + Evas_Mat4 matrix_mv; + Evas_Mat4 matrix_mvp; + Evas_Vec4 plane_right, plane_left, plane_bottom, plane_top, plane_far, plane_near, tmp; + int frustum = 0; + Evas_3D_Node_Data *camera_pd = eo_data_scope_get(camera_node, EVAS_3D_CAMERA_CLASS); + Evas_3D_Camera_Data *camera = eo_data_scope_get(camera_pd->data.camera.camera, EVAS_3D_CAMERA_CLASS); + + + if (camera_pd->type != EVAS_3D_NODE_TYPE_CAMERA) + { + ERR("Nodes type mismatch."); + return -1; + } + +#define CHECK_IN_FRUSTUM_MIN(name) \ + (((plane_##name.x * pd->obb.p0.x + plane_##name.y * pd->obb.p0.y + plane_##name.z * pd->obb.p0.z + plane_##name.w) >= 0) ? EINA_TRUE : EINA_FALSE) + +#define CHECK_IN_FRUSTUM_MAX(name) \ + (((plane_##name.x * pd->obb.p1.x + plane_##name.y * pd->obb.p1.y + plane_##name.z * pd->obb.p1.z + plane_##name.w) >= 0) ? EINA_TRUE : EINA_FALSE) + +#define NORMALIZE(name) \ + evas_vec4_copy(&tmp, &plane_##name); \ + plane_##name.x = plane_##name.x / sqrtf(evas_vec4_length_square_get(&tmp)); \ + plane_##name.y = plane_##name.y / sqrtf(evas_vec4_length_square_get(&tmp)); \ + plane_##name.z = plane_##name.z / sqrtf(evas_vec4_length_square_get(&tmp)); \ + plane_##name.w = plane_##name.w / sqrtf(evas_vec4_length_square_get(&tmp)); + + /*get need matrix like multiply view matrix with projection matrix*/ + evas_mat4_inverse_build(&matrix_eye, &camera_pd->position_world, &camera_pd->orientation_world, &camera_pd->scale_world); + evas_mat4_build(&matrix_local_to_world, &pd->position_world, &pd->orientation_world, &pd->scale_world); + evas_mat4_multiply(&matrix_mv, &matrix_eye, &matrix_local_to_world); + evas_mat4_multiply(&matrix_mvp, &camera->projection, &matrix_mv); + + /*get planes and normilize results*/ + evas_vec4_set(&plane_right, matrix_mvp.m[3] - matrix_mvp.m[0], + matrix_mvp.m[7] - matrix_mvp.m[4], + matrix_mvp.m[11] - matrix_mvp.m[8], + matrix_mvp.m[15] - matrix_mvp.m[12]); + NORMALIZE(right) + + evas_vec4_set(&plane_left, matrix_mvp.m[3] + matrix_mvp.m[0], + matrix_mvp.m[7] + matrix_mvp.m[4], + matrix_mvp.m[11] + matrix_mvp.m[8], + matrix_mvp.m[15] + matrix_mvp.m[12]); + NORMALIZE(left) + + evas_vec4_set(&plane_bottom, matrix_mvp.m[3] + matrix_mvp.m[1], + matrix_mvp.m[7] + matrix_mvp.m[5], + matrix_mvp.m[11] + matrix_mvp.m[9], + matrix_mvp.m[15] + matrix_mvp.m[13]); + NORMALIZE(bottom) + + evas_vec4_set(&plane_top, matrix_mvp.m[3] - matrix_mvp.m[1], + matrix_mvp.m[7] - matrix_mvp.m[5], + matrix_mvp.m[11] - matrix_mvp.m[9], + matrix_mvp.m[15] - matrix_mvp.m[13]); + NORMALIZE(top) + + evas_vec4_set(&plane_far, matrix_mvp.m[3] - matrix_mvp.m[2], + matrix_mvp.m[7] - matrix_mvp.m[6], + matrix_mvp.m[11] - matrix_mvp.m[10], + matrix_mvp.m[15] - matrix_mvp.m[14]); + NORMALIZE(far) + + evas_vec4_set(&plane_near, matrix_mvp.m[3] + matrix_mvp.m[2], + matrix_mvp.m[7] + matrix_mvp.m[6], + matrix_mvp.m[11] + matrix_mvp.m[10], + matrix_mvp.m[15] + matrix_mvp.m[14]); + NORMALIZE(near) + +#undef NORMALIZE + + /*check OBB points in frustum (Ax + By + Cz + D >= 0)*/ + if (CHECK_IN_FRUSTUM_MIN(right) && CHECK_IN_FRUSTUM_MIN(left) + && CHECK_IN_FRUSTUM_MIN(bottom) && CHECK_IN_FRUSTUM_MIN(top) + && CHECK_IN_FRUSTUM_MIN(far) && CHECK_IN_FRUSTUM_MIN(near)) + frustum |= 1; + + if (CHECK_IN_FRUSTUM_MAX(right) && CHECK_IN_FRUSTUM_MAX(left) + && CHECK_IN_FRUSTUM_MAX(bottom) && CHECK_IN_FRUSTUM_MAX(top) + && CHECK_IN_FRUSTUM_MAX(far) && CHECK_IN_FRUSTUM_MAX(near)) + frustum |= 2; + +#undef CHECK_IN_FRUSTUM_MIN +#undef CHECK_IN_FRUSTUM_MAX + + return frustum; +} + + #include "canvas/evas_3d_node.eo.c" diff --git a/src/lib/evas/canvas/evas_3d_node.eo b/src/lib/evas/canvas/evas_3d_node.eo index 3b8f8431bc..5abc1fc707 100644 --- a/src/lib/evas/canvas/evas_3d_node.eo +++ b/src/lib/evas/canvas/evas_3d_node.eo @@ -354,6 +354,26 @@ class Evas_3D_Node (Evas_3D_Object, Evas_Common_Interface) @in Evas_Real *z2; } } + + obb_frustum_check { + /* + + * Check is the obb of node in frustum of camera node. + * + * @param camera_node The given node of camera. + * @param node The given node. + * @return @c 0 if the obb is not in frustum, @c 1 if only min coordinate of obb is in frustum, + * @c 2 if only max coordinate of obb is in frustum, @c 3 if both coordinates of obb is in frustum. + + * If the camera_node is not of type EVAS_3D_NODE_TYPE_CAMERA error wrong type of node will be generated and returned @ -1. + + * @ingroup Evas_3D_Node + */ + return int; + params { + @in Evas_3D_Node *camera_node; + } + } } properties {