94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
#ifndef lint
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static char sccs_id[] = "@(#)til_enlrg.c 5.3 9/7/88";
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#endif
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/*
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* Copyright 1988 by Siemens Research and Technology Laboratories, Princeton, NJ
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*
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* All Rights Reserved
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of Siemens Research and Technology
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* Laboratories not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior permission.
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*
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*
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* SIEMENS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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* SIEMENS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include "copyright.h"
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/* Enlarge 'tile' on its 'side' to 'coord' position. NOTE:
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* assumes that area in which enlargement is done is a
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* space tile
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*/
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#include "tileD.h"
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#include "tile.h"
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extern void Tile_Merge();
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#ifdef WM_DEBUG
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extern void Tile_Panic();
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#endif
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void
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Tile_Enlarge(genericp, side, coord)
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Tilep genericp;
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Side side;
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Basetype coord;
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{
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Tile *new_tile,
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*tile = (Tile *) genericp;
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switch (side) {
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case Left:
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#ifdef WM_DEBUG
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if(coord >= Left_X(tile))
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Tile_Panic("enlarge out of horizontal range");
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#endif
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new_tile = (Tile *) Tile_Create(coord, Top_Y(tile),
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Left_X(tile)-1, Bottom_Y(tile));
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Tile_Merge(tile, new_tile, Left);
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break;
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case Right:
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#ifdef WM_DEBUG
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if(coord <= Right_X(tile))
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Tile_Panic("enlarge out of horizontal range");
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#endif
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new_tile = (Tile *) Tile_Create(Right_X(tile)+1, Top_Y(tile),
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coord, Bottom_Y(tile));
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Tile_Merge(tile, new_tile, Right);
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break;
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case Top:
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#ifdef WM_DEBUG
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if(coord >= Top_Y(tile))
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Tile_Panic("enlarge out of vertical range");
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#endif
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new_tile = (Tile *) Tile_Create(Left_X(tile), coord,
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Right_X(tile), Top_Y(tile)-1);
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Tile_Merge(tile, new_tile, Top);
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break;
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case Bottom:
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#ifdef WM_DEBUG
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if(coord <= Bottom_Y(tile))
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Tile_Panic("enlarge out of vertical range");
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#endif
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new_tile = (Tile *) Tile_Create(Left_X(tile), Bottom_Y(tile)+1,
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Right_X(tile), coord);
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Tile_Merge(tile, new_tile, Bottom);
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break;
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}
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}
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