Clutter の position_z
Clutter ネタは、書き留めていたものが無くなったので、しばらく休みます。
Clutter-1.12.0 から ClutterActor の depth がなくなり、 position_z に変わったので、そのサンプルです。単純に pozition_z を変えているだけです。
まずは C から
#include <clutter/clutter.h> void on_completed (ClutterTimeline *timeline, gpointer user_data) { ClutterActor *actor; gfloat z; actor = * (ClutterActor**)user_data; z = clutter_actor_get_z_position (actor); clutter_actor_save_easing_state (actor); if (z > 0) { clutter_actor_set_z_position (actor, -100); } else { clutter_actor_set_z_position (actor, 100); } clutter_actor_restore_easing_state (actor); } int main (int argc, char *argv[]) { ClutterActor *stage, *actor; ClutterTimeline *timeline; if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS) return 1; stage = clutter_stage_new (); g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL); actor = clutter_actor_new (); clutter_actor_set_background_color (actor, clutter_color_get_static (CLUTTER_COLOR_RED)); clutter_actor_set_size (actor, 100, 100); clutter_actor_set_position (actor, 100, 100); timeline = clutter_timeline_new (2000); clutter_timeline_set_repeat_count (timeline, -1); g_signal_connect (timeline, "completed", G_CALLBACK (on_completed), &actor); clutter_timeline_start (timeline); clutter_actor_add_child (stage, actor); clutter_actor_show (stage); clutter_main (); return 0; }
clutter_actor_set_z_position() と clutter_actor_get_z_position() を使っているだけなので、説明不要ですね。
Gjs でも同様に動作します。
#! /usr/bin/env gjs const Clutter = imports.gi.Clutter; function on_completed (timeline) { let z = actor.get_z_position(); actor.save_easing_state(); if (z > 0) { actor.set_z_position(-100); } else { actor.set_z_position(100); } actor.save_easing_state(); } Clutter.init(null); let stage = new Clutter.Stage(); stage.connect('destroy', Clutter.main_quit); let actor = new Clutter.Actor(); actor.set_background_color(Clutter.Color.get_static (Clutter.StaticColor.RED)); actor.set_size(100, 100); actor.set_position(100, 100); let timeline = new Clutter.Timeline({duration:2000}); timeline.set_repeat_count(-1); timeline.connect('completed', on_completed); timeline.start(); stage.add_child(actor); stage.show(); Clutter.main();
簡単ですね。
しばらく休んで、次のネタを考えます。ではでは