From 7f92496425eb75315711325072223e3ba3903709 Mon Sep 17 00:00:00 2001
From: Andrzej Kapolka <andrzej@threerings.net>
Date: Thu, 3 Aug 2006 18:21:28 +0000
Subject: [PATCH] Hide nodes not included as targets in an animation.  I
 haven't tested all the units with this; there's a chance some of the
 animations will have to be re-exported if they mistakenly omit nodes.

git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@24 ed5b42cb-e716-0410-a449-f6a68f950b19
---
 .../jme/model/EmissionController.java         |  5 ++
 src/java/com/threerings/jme/model/Model.java  |  8 ++++
 .../com/threerings/jme/model/ModelNode.java   | 48 ++++++++++++++++++-
 3 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/src/java/com/threerings/jme/model/EmissionController.java b/src/java/com/threerings/jme/model/EmissionController.java
index a4da1adc..07d8499f 100644
--- a/src/java/com/threerings/jme/model/EmissionController.java
+++ b/src/java/com/threerings/jme/model/EmissionController.java
@@ -49,6 +49,11 @@ public abstract class EmissionController extends ModelController
         super.init(model);
         if (_hideTarget) {
             _target.setCullMode(Spatial.CULL_ALWAYS);
+            if (_target instanceof ModelNode) {
+                // make sure the node isn't turned back on by an
+                // animation
+                ((ModelNode)_target).setForceCull(true);
+            }
         }
     }
     
diff --git a/src/java/com/threerings/jme/model/Model.java b/src/java/com/threerings/jme/model/Model.java
index d11dd6a9..9b256870 100644
--- a/src/java/com/threerings/jme/model/Model.java
+++ b/src/java/com/threerings/jme/model/Model.java
@@ -508,6 +508,14 @@ public class Model extends ModelNode
         if (_anim != null) {
             _animObservers.apply(new AnimCancelledOp(_animName));
         }
+        
+        // first cull all model nodes, then re-activate the ones in the
+        // target list
+        cullModelNodes();
+        for (Spatial target : anim.transformTargets) {
+            ((ModelNode)target).updateCullMode();
+        }
+        
         _paused = false;
         _anim = anim;
         _animName = name;
diff --git a/src/java/com/threerings/jme/model/ModelNode.java b/src/java/com/threerings/jme/model/ModelNode.java
index 10478582..8811dba9 100644
--- a/src/java/com/threerings/jme/model/ModelNode.java
+++ b/src/java/com/threerings/jme/model/ModelNode.java
@@ -282,6 +282,24 @@ public class ModelNode extends Node
         }
     }
     
+    /**
+     * Sets whether this node should be culled even if it has mesh
+     * descendants.
+     */
+    public void setForceCull (boolean force)
+    {
+        _forceCull = force;
+    }
+    
+    /**
+     * Checks whether this node should be culled even if it has mesh
+     * descendants.
+     */
+    public boolean getForceCull ()
+    {
+        return _forceCull;
+    }
+    
     // documentation inherited from interface ModelSpatial
     public void writeBuffers (FileChannel out)
         throws IOException
@@ -334,7 +352,7 @@ public class ModelNode extends Node
                 _hasVisibleDescendants = true;
             }
         }
-        setCullMode(_hasVisibleDescendants ? CULL_INHERIT : CULL_ALWAYS);
+        updateCullMode();
         return _hasVisibleDescendants;
     }
     
@@ -372,6 +390,31 @@ public class ModelNode extends Node
         }
     }
     
+    /**
+     * Recursively culls all model nodes under this one in preparation for
+     * activating the ones listed in an animation.
+     */
+    protected void cullModelNodes ()
+    {
+        for (int ii = 0, nn = getQuantity(); ii < nn; ii++) {
+            Spatial child = getChild(ii);
+            if (child instanceof ModelNode) {
+                child.setCullMode(CULL_ALWAYS);
+                ((ModelNode)child).cullModelNodes();
+            }
+        }
+    }
+    
+    /**
+     * Makes this node visible if and only if it has visible descendants and
+     * has not been specifically culled.
+     */
+    protected void updateCullMode ()
+    {
+        setCullMode((_hasVisibleDescendants && !_forceCull) ?
+            CULL_INHERIT : CULL_ALWAYS);
+    }
+    
     /**
      * Sets a matrix to the transform defined by the given translation,
      * rotation, and scale values.
@@ -405,5 +448,8 @@ public class ModelNode extends Node
     /** Whether or not this node has mesh descendants. */
     protected boolean _hasVisibleDescendants;
     
+    /** If true, cull the node even if it has mesh descendants. */
+    protected boolean _forceCull;
+    
     private static final long serialVersionUID = 1;
 }