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
2006-06-23 18:07:28 +00:00
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+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2005 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.jme.model;
+
+import java.util.Properties;
+
+import com.jme.math.Vector3f;
+import com.jme.scene.Geometry;
+import com.jme.scene.Spatial;
+import com.jme.util.geom.BufferUtils;
+
+/**
+ * A model controller whose target represents an emitter.
+ */
+public abstract class EmissionController extends ModelController
+{
+    @Override // documentation inherited
+    public void configure (Properties props, Spatial target)
+    {
+        // substitute underlying mesh for geometry targets
+        if (target instanceof ModelNode) {
+            Spatial mesh = ((ModelNode)target).getChild("mesh");
+            if (mesh != null) {
+                target = mesh;
+            }
+        }
+        super.configure(props, target);
+    }
+    
+    @Override // documentation inherited
+    public void init (Model model)
+    {
+        super.init(model);
+        _target.setCullMode(Spatial.CULL_ALWAYS);
+    }
+    
+    /**
+     * Determines the current location of the emitter in world coordinates.
+     */
+    protected void getEmitterLocation (Vector3f result)
+    {
+        result.set(_target.getWorldTranslation());
+    }
+    
+    /**
+     * Determines the current direction of the emitter in world coordinates.
+     */
+    protected void getEmitterDirection (Vector3f result)
+    {
+        if (_target instanceof Geometry) {
+            BufferUtils.populateFromBuffer(result,
+                ((Geometry)_target).getNormalBuffer(0), 0);
+        } else {
+            result.set(0f, 0f, -1f);
+        }
+        _target.getWorldRotation().multLocal(result);
+    }
+    
+    private static final long serialVersionUID = 1;
+}