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hacked-libtiled/tiled/util/BasicTileCutter.java

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+/*
+ * Copyright 2004-2006, Thorbjørn Lindeijer <thorbjorn@lindeijer.nl>
+ * Copyright 2004-2006, Adam Turk <aturk@biggeruniverse.com>
+ *
+ * This file is part of libtiled-java.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package tiled.util;
+
+import java.awt.Dimension;
+import java.awt.Image;
+import java.awt.image.BufferedImage;
+
+/**
+ * Cuts tiles from a tileset image according to a regular rectangular pattern.
+ * Supports a variable spacing between tiles and a margin around them.
+ */
+public class BasicTileCutter implements TileCutter
+{
+    private int nextX, nextY;
+    private BufferedImage image;
+    private final int tileWidth;
+    private final int tileHeight;
+    private final int tileSpacing;
+    private final int tileMargin;
+
+    public BasicTileCutter(int tileWidth, int tileHeight, int tileSpacing,
+                           int tileMargin)
+    {
+        this.tileWidth = tileWidth;
+        this.tileHeight = tileHeight;
+        this.tileSpacing = tileSpacing;
+        this.tileMargin = tileMargin;
+
+        reset();
+    }
+
+    public String getName() {
+        return "Basic";
+    }
+
+    public void setImage(BufferedImage image) {
+        this.image = image;
+    }
+
+    public Image getNextTile() {
+        if (nextY + tileHeight + tileMargin <= image.getHeight()) {
+            BufferedImage tile =
+                image.getSubimage(nextX, nextY, tileWidth, tileHeight);
+            nextX += tileWidth + tileSpacing;
+
+            if (nextX + tileWidth + tileMargin > image.getWidth()) {
+                nextX = tileMargin;
+                nextY += tileHeight + tileSpacing;
+            }
+
+            return tile;
+        }
+
+        return null;
+    }
+
+    public void reset() {
+        nextX = tileMargin;
+        nextY = tileMargin;
+    }
+
+    public Dimension getTileDimensions() {
+        return new Dimension(tileWidth, tileHeight);
+    }
+
+    /**
+     * Returns the spacing between tile images.
+     * @return the spacing between tile images.
+     */
+    public int getTileSpacing() {
+        return tileSpacing;
+    }
+
+    /**
+     * Returns the margin around the tile images.
+     * @return the margin around the tile images.
+     */
+    public int getTileMargin() {
+        return tileMargin;
+    }
+
+    /**
+     * Returns the number of tiles per row in the tileset image.
+     * @return the number of tiles per row in the tileset image.
+     */
+    public int getTilesPerRow() {
+        return (image.getWidth() - 2 * tileMargin + tileSpacing) /
+                (tileWidth + tileSpacing);
+    }
+}