Fixed scene rendering issues and improved performance.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@517 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/client/util/IsoUtil.java

@@ -1,5 +1,5 @@
 //
-// $Id: IsoUtil.java,v 1.11 2001/10/19 23:26:31 shaper Exp $
+// $Id: IsoUtil.java,v 1.12 2001/10/22 18:21:41 shaper Exp $
 
 package com.threerings.miso.scene.util;
 
@@ -419,6 +419,13 @@ public class IsoUtil
                 return comp;
             }
 
+            // check whether right edge of b overlaps with left edge of a
+            comp = getRightOverlap(db, da);
+            if (comp != 0) {
+                // reverse ordering per reversed overlap check
+                return (comp == -1) ? 1 : -1;
+            }
+
             // determine ordering based purely on coordinates
             if (da.x <= db.x && da.y <= db.y) {
                 return -1;