Behold, Nenya, Ring of Water and repository for our media and animation related

goodies, both Java 2D and LWJGL/JME 3D.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@1 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/cast/CompositedShadowImage.java

@@ -0,0 +1,92 @@
+//
+// $Id: CompositedMultiFrameImage.java 3310 2005-01-24 23:08:21Z mdb $
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.cast;
+
+import java.awt.AlphaComposite;
+import java.awt.Composite;
+import java.awt.Graphics2D;
+import java.awt.Rectangle;
+
+import com.threerings.media.image.ImageManager;
+import com.threerings.media.image.Mirage;
+import com.threerings.media.image.VolatileMirage;
+
+import com.threerings.cast.CompositedActionFrames.ComponentFrames;
+
+/**
+ * Used to composite the special shadow action frames for a particular
+ * orientation of a {@link CompositedActionFrames}.
+ */
+public class CompositedShadowImage extends CompositedMultiFrameImage
+{
+    public CompositedShadowImage (ImageManager imgr, ComponentFrames[] sources,
+                                  String action, int orient, float shadowAlpha)
+    {
+        super(imgr, sources, action, orient);
+
+        // create the appropriate alpha composite for rendering the shadow
+        _shadowAlpha = AlphaComposite.getInstance(
+            AlphaComposite.SRC_OVER, shadowAlpha);
+    }
+
+    // documentation inherited from interface
+    public int getWidth (int index) {
+        return _sources[0].frames.getFrames(_orient).getWidth(index);
+    }
+
+    // documentation inherited from interface
+    public int getHeight (int index) {
+        return _sources[0].frames.getFrames(_orient).getHeight(index);
+    }
+
+    public int getXOrigin (int index) {
+        return _sources[0].frames.getXOrigin(_orient, index);
+    }
+
+    public int getYOrigin (int index) {
+        return _sources[0].frames.getYOrigin(_orient, index);
+    }
+
+    // documentation inherited from interface
+    public void paintFrame (Graphics2D g, int index, int x, int y) {
+        Composite ocomp = g.getComposite();
+        g.setComposite(_shadowAlpha);
+        _images[index].paint(g, x + _images[index].getX(),
+                             y + _images[index].getY());
+        g.setComposite(ocomp);
+    }
+
+    // documentation inherited from interface
+    public boolean hitTest (int index, int x, int y) {
+        return _images[index].hitTest(x + _images[index].getX(),
+                                      y + _images[index].getY());
+    }
+
+    // documentation inherited from interface TrimmedMultiFrameImage
+    public void getTrimmedBounds (int index, Rectangle bounds) {
+        bounds.setBounds(_images[index].getX(), _images[index].getY(),
+                         _images[index].getWidth(), _images[index].getHeight());
+    }
+
+    /** The alpha value at which we render our shadow. */
+    protected AlphaComposite _shadowAlpha;
+};