#include #if defined (_MSC_VER) && !defined (_USE_MATH_DEFINES) #define _USE_MATH_DEFINES #endif #include #include #include #include #define TRAILS 0 #define NHANDS 6 #define RADIUS ((CLUTTER_STAGE_WIDTH()+CLUTTER_STAGE_HEIGHT())/NHANDS) typedef struct SuperOH { ClutterActor **hand, *bgtex; ClutterActor *group; ClutterActor *stage; ClutterActor *tv; } SuperOH; static gint n_hands = NHANDS; static GOptionEntry super_oh_entries[] = { { "num-hands", 'n', 0, G_OPTION_ARG_INT, &n_hands, "Number of hands", "HANDS" }, { NULL } }; static gint get_radius (void) { return (CLUTTER_STAGE_HEIGHT() + CLUTTER_STAGE_HEIGHT()) / n_hands ; } /* input handler */ static gboolean input_cb (ClutterStage *stage, ClutterEvent *event, gpointer data) { if (event->type == CLUTTER_BUTTON_PRESS) { ClutterButtonEvent *button_event; ClutterActor *e; gint x, y; clutter_event_get_coords (event, &x, &y); button_event = (ClutterButtonEvent *) event; g_print ("*** button press event (button:%d) ***\n", button_event->button); e = clutter_stage_get_actor_at_pos (stage, x, y); if (e && (CLUTTER_IS_TEXTURE (e) || CLUTTER_IS_CLONE_TEXTURE (e))) { clutter_actor_hide (e); return TRUE; } } else if (event->type == CLUTTER_KEY_RELEASE) { ClutterKeyEvent *kev = (ClutterKeyEvent *) event; g_print ("*** key press event (key:%c) ***\n", clutter_key_event_symbol (kev)); if (clutter_key_event_symbol (kev) == CLUTTER_q) { clutter_main_quit (); return TRUE; } } return FALSE; } static gboolean update_snapshot (gpointer data) { SuperOH *oh = data; gint width = CLUTTER_STAGE_WIDTH(); gint height = CLUTTER_STAGE_HEIGHT(); gint x, y, rowstride; guchar *pixels; pixels = clutter_stage_read_pixels (CLUTTER_STAGE (oh->stage), 0, 0, width, height); g_assert (pixels); /* Alpha data is not guaranteed to be sensible and we don't need it, * overwrite it with full-alpha. */ rowstride = width * 4; for (y = 0; y < height; y++) for (x = 3; x < rowstride; x += 4) pixels[(y * rowstride) + x] = 0xff; clutter_texture_set_from_rgb_data (CLUTTER_TEXTURE (oh->tv), pixels, TRUE, width, height, width *4, 4, 0, NULL); g_free (pixels); return TRUE; } /* Timeline handler */ static void frame_cb (ClutterTimeline *timeline, gint frame_num, gpointer data) { SuperOH *oh = (SuperOH *)data; gint i; /* Rotate everything clockwise about stage center*/ clutter_actor_set_rotation (CLUTTER_ACTOR (oh->group), CLUTTER_Z_AXIS, frame_num, CLUTTER_STAGE_WIDTH () / 2, CLUTTER_STAGE_HEIGHT () / 2, 0); for (i = 0; i < n_hands; i++) { gdouble scale_x, scale_y; clutter_actor_get_scale (oh->hand[i], &scale_x, &scale_y); /* Rotate each hand around there centers - to get this we need * to take into account any scaling. * * FIXME: scaling causes drift so disabled for now. Need rotation * unit based functions to fix. */ clutter_actor_set_rotation (oh->hand[i], CLUTTER_Z_AXIS, - 6.0 * frame_num, 0, 0, 0); } update_snapshot (oh); } int main (int argc, char *argv[]) { ClutterTimeline *timeline; ClutterAlpha *alpha; ClutterBehaviour *scaler_1, *scaler_2; ClutterActor *stage; ClutterColor stage_color = { 0x61, 0x64, 0x8c, 0xff }; SuperOH *oh; gint i; GError *error; error = NULL; clutter_init_with_args (&argc, &argv, NULL, super_oh_entries, NULL, &error); if (error) { g_warning ("Unable to initialise Clutter:\n%s", error->message); g_error_free (error); exit (1); } stage = clutter_stage_get_default (); clutter_actor_set_size (stage, 800, 600); clutter_stage_set_title (CLUTTER_STAGE (stage), "Actors Test"); clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color); oh = g_new(SuperOH, 1); /* Create a timeline to manage animation */ timeline = clutter_timeline_new (360, 60); /* num frames, fps */ g_object_set (timeline, "loop", TRUE, NULL); /* have it loop */ /* fire a callback for frame change */ g_signal_connect (timeline, "new-frame", G_CALLBACK (frame_cb), oh); /* Set up some behaviours to handle scaling */ alpha = clutter_alpha_new_full (timeline, CLUTTER_ALPHA_SINE, NULL, NULL); scaler_1 = clutter_behaviour_scale_new (alpha, 0.5, 0.5, 1.0, 1.0); scaler_2 = clutter_behaviour_scale_new (alpha, 1.0, 1.0, 0.5, 0.5); /* create a new group to hold multiple actors in a group */ oh->group = clutter_group_new(); oh->hand = g_new (ClutterActor*, n_hands); for (i = 0; i < n_hands; i++) { gint x, y, w, h; gint radius = get_radius (); /* Create a texture from file, then clone in to same resources */ if (i == 0) { if ((oh->hand[i] = clutter_texture_new_from_file ("redhand.png", &error)) == NULL) { g_error ("image load failed: %s", error->message); exit (1); } } else oh->hand[i] = clutter_clone_texture_new (CLUTTER_TEXTURE(oh->hand[0])); /* Place around a circle */ w = clutter_actor_get_width (oh->hand[0]); h = clutter_actor_get_height (oh->hand[0]); x = CLUTTER_STAGE_WIDTH () / 2 + radius * cos (i * M_PI / (n_hands / 2)) - w / 2; y = CLUTTER_STAGE_HEIGHT () / 2 + radius * sin (i * M_PI / (n_hands / 2)) - h / 2; clutter_actor_set_position (oh->hand[i], x, y); clutter_actor_move_anchor_point_from_gravity (oh->hand[i], CLUTTER_GRAVITY_CENTER); /* Add to our group group */ clutter_container_add_actor (CLUTTER_CONTAINER (oh->group), oh->hand[i]); #if 1 /* FIXME: disabled as causes drift? - see comment above */ if (i % 2) clutter_behaviour_apply (scaler_1, oh->hand[i]); else clutter_behaviour_apply (scaler_2, oh->hand[i]); #endif } /* Add the group to the stage */ clutter_container_add_actor (CLUTTER_CONTAINER (stage), CLUTTER_ACTOR (oh->group)); /* Show everying ( and map window ) */ clutter_actor_show (stage); oh->stage = stage; oh->tv = clutter_texture_new (); clutter_container_add_actor (CLUTTER_CONTAINER (stage), CLUTTER_ACTOR (oh->tv)); clutter_actor_set_position (oh->tv, CLUTTER_STAGE_WIDTH() * 0.025, CLUTTER_STAGE_HEIGHT() * 0.025); clutter_actor_set_scale (oh->tv, 0.95, 0.95); clutter_actor_set_opacity (oh->tv, 0.9 * 0xff); clutter_actor_show (oh->tv); clutter_actor_lower_bottom (oh->tv); g_signal_connect (stage, "button-press-event", G_CALLBACK (input_cb), oh); g_signal_connect (stage, "key-release-event", G_CALLBACK (input_cb), oh); /* and start it */ clutter_timeline_start (timeline); clutter_main (); g_free (oh->hand); g_free (oh); return 0; }