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+/*	$NetBSD: box.h,v 1.1.1.1 2003/12/26 17:57:03 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 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 FOUNDATION OR 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.
+ */
+
+/*
+ * box.C: Single box utilities; A box is an entity with four edges, four
+ *	  corners, and a center that maps directly to a board
+ */
+
+#ifndef _H_BOX
+#define _H_BOX
+
+#include <stdlib.h>
+
+class BOARD;
+
+class POINT {
+  public:
+    int x;
+    int y;
+};
+
+class BOX {
+  public:
+    enum EDGE {
+	first  = 0,
+	top    = 0,
+	bottom = 1,
+	left   = 2,
+	right  = 3,
+	last   = 4,
+    };
+
+    BOX(size_t py, size_t px, BOARD& b);
+
+    void reset(void);		// Clear a box
+    void paint(void);		// Paint a box
+
+    // Member access
+    int& name(void);
+    int& edge(int e);
+
+    // Edge maniputations
+    void set(int e);
+    void clr(int e);
+    int isset(int e) const;
+
+    int count(void) const;	// Count the number of edges in use
+
+    // Useful constants
+    // Relative coordinates of the edges from the center of the box.
+    static const POINT edges[BOX::last];
+    // Relative coordinates of the corners from the center of the box.
+    static const POINT corners[BOX::last];
+    // Character symbols of the four edges
+    static const int syms[BOX::last];
+
+  private:
+    void addcorner(size_t y, size_t x);	// add a corner character
+
+    size_t _centerx;	// Coordinates of the center in board units
+    size_t _centery;
+    BOARD& _b;		// The board we refer to
+};
+
+#endif