An animation that does nothing but hang around for a specified period of

time.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2091 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/animation/BlankAnimation.java

@@ -0,0 +1,49 @@
+//
+// $Id: BlankAnimation.java,v 1.1 2002/12/29 04:32:14 mdb Exp $
+
+package com.threerings.media.animation;
+
+import java.awt.Graphics2D;
+import java.awt.Rectangle;
+
+/**
+ * Displays nothing, but does so for a specified amount of time. Useful
+ * when you want to get an animation completed event in some period of
+ * time but don't actually need to display anything.
+ */
+public class BlankAnimation extends Animation
+{
+    public BlankAnimation (long duration)
+    {
+        super(new Rectangle(0, 0, 0, 0));
+        _duration = duration;
+    }
+
+    // documentation inherited
+    public void tick (long timestamp)
+    {
+        if (_start == 0) {
+            // initialize our starting time
+            _start = timestamp;
+        }
+
+        // check whether we're done
+        _finished = (timestamp - _start >= _duration);
+    }
+
+    // documentation inherited
+    public void fastForward (long timeDelta)
+    {
+        if (_start > 0) {
+            _start += timeDelta;
+        }
+    }
+
+    // documentation inherited
+    public void paint (Graphics2D gfx)
+    {
+        // nothing doing
+    }
+
+    protected long _duration, _start;
+}