Various fixes to support negative tile coordinates; created sparse miso

scene model and associated business to store scene data in an arbitrary
set of blocks rather than fixed arrays; finally stuck a fork in scene
width and height as well as view width and height along with origin offset
and a few other now obsolete bits.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2434 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/util/MisoSceneMetrics.java

@@ -1,5 +1,5 @@
 //
-// $Id: MisoSceneMetrics.java,v 1.1 2003/04/17 19:21:16 mdb Exp $
+// $Id: MisoSceneMetrics.java,v 1.2 2003/04/19 22:40:34 mdb Exp $
 
 package com.threerings.miso.util;
 
@@ -23,22 +23,9 @@ public class MisoSceneMetrics
     /** Number of fine coordinates on each axis within a tile. */
     public int finegran;
 
-    /** Size of the view in tile count. */
-    public int scenevwid, scenevhei;
-
     /** Dimensions of our scene blocks in tile count. */
     public int blockwid = 10, blockhei = 10;
 
-    /** Whether or not this view can extend beyond the bounds defined by
-     * the view width and height. True if it cannot, false if it can. */
-    public boolean bounded = true;
-
-    /** The bounds of the view in screen pixel coordinates. */
-    public Rectangle bounds;
-
-    /** The position in pixels at which tile (0, 0) is drawn. */ 
-    public Point origin;
-
     /** The length of a tile edge in pixels. */
     public float tilelen;
 
@@ -62,26 +49,13 @@ public class MisoSceneMetrics
      * @param tilehei the height in pixels of the tiles.
      * @param finegran the number of sub-tile divisions to use for fine
      * coordinates.
-     * @param svwid the width in tiles of the viewport.
-     * @param svhei the height in tiles of the viewport.
-     * @param offy the offset of the origin (in tiles) from the top of the
-     * viewport.
      */
-    public MisoSceneMetrics (int tilewid, int tilehei, int finegran,
-                             int svwid, int svhei, int offy)
+    public MisoSceneMetrics (int tilewid, int tilehei, int finegran)
     {
         // keep track of this stuff
         this.tilewid = tilewid;
         this.tilehei = tilehei;
         this.finegran = finegran;
-        this.scenevwid = svwid;
-        this.scenevhei = svhei;
-
-	// set the desired scene view bounds
-	bounds = new Rectangle(0, 0, scenevwid * tilewid, scenevhei * tilehei);
-
-	// set the scene display origin
-        origin = new Point((bounds.width / 2), (offy * tilehei));
 
         // halve the dimensions
         tilehwid = (tilewid / 2);
@@ -107,28 +81,4 @@ public class MisoSceneMetrics
 	finehwid = (int)((float)tilehwid / (float)finegran);
 	finehhei = (int)((float)tilehhei / (float)finegran);
     }
-
-    /**
-     * Returns whether the given tile coordinate is a valid coordinate in
-     * our coordinate system (which allows tile coordinates from 0 to
-     * 2^15-1).
-     */
-    public boolean isCoordinateValid (int x, int y)
-    {
-        return (x >= 0 && x < Short.MAX_VALUE &&
-                y >= 0 && y < Short.MAX_VALUE);
-    }
-
-    /**
-     * Returns whether the given full coordinate is a valid coordinate
-     * within the scene.
-     */
-    public boolean isFullCoordinateValid (int x, int y)
-    {
-        int tx = MisoUtil.fullToTile(x), ty = MisoUtil.fullToTile(y);
-        int fx = MisoUtil.fullToFine(x), fy = MisoUtil.fullToFine(y);
-        return (isCoordinateValid(tx, ty) &&
-                fx >= 0 && fx < finegran &&
-                fy >= 0 && fy < finegran);
-    }
 }