Added toString() and a means by which to create a blank miso scene model.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@666 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/data/MisoSceneModel.java

@@ -1,8 +1,10 @@
 //
-// $Id: MisoSceneModel.java,v 1.1 2001/11/18 04:09:22 mdb Exp $
+// $Id: MisoSceneModel.java,v 1.2 2001/11/29 00:17:14 mdb Exp $
 
 package com.threerings.miso.scene;
 
+import com.samskivert.util.StringUtil;
+
 /**
  * The scene model is the bare bones representation of the data for a
  * scene in the Miso system. From the scene model, one would create an
@@ -27,4 +29,50 @@ public class MisoSceneModel
     /** The combined tile ids (tile set id and tile id) of the files in
      * the object layer in (x, y, tile id) format. */
     public int[] objectTileIds;
+
+    /**
+     * Generates a string representation of this scene model.
+     */
+    public String toString ()
+    {
+        return "[width=" + width + ", height=" + height +
+            ", baseTileIds=" + StringUtil.toString(baseTileIds) +
+            ", fringeTileIds=" + StringUtil.toString(fringeTileIds) +
+            ", objectTileIds=" + StringUtil.toString(objectTileIds) + "]";
+    }
+
+    /**
+     * Creates and returns a blank scene model (with zero width and
+     * height).
+     */
+    public static MisoSceneModel blankMisoSceneModel ()
+    {
+        MisoSceneModel model = new MisoSceneModel();
+        populateBlankMisoSceneModel(model, 0, 0);
+        return model;
+    }
+
+    /**
+     * Creates and returns a blank scene model with the specified width
+     * and height.
+     */
+    public static MisoSceneModel blankMisoSceneModel (int width, int height)
+    {
+        MisoSceneModel model = new MisoSceneModel();
+        populateBlankMisoSceneModel(model, width, height);
+        return model;
+    }
+
+    /**
+     * Populates a blank scene model with blank values.
+     */
+    protected static void populateBlankMisoSceneModel (
+        MisoSceneModel model, int width, int height)
+    {
+        model.width = width;
+        model.height = height;
+        model.baseTileIds = new int[width*height];
+        model.fringeTileIds = new int[width*height];
+        model.objectTileIds = new int[0];
+    }
 }