Create dgnstroke.cpp

/******************************************************************************
 * $Id: dgnstroke.cpp,v 1.9 2004/06/02 15:53:00 warmerda Exp $
 *
 * Project:  Microstation DGN Access Library
 * Purpose:  Code to stroke Arcs/Ellipses into polylines.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 2001, Avenza Systems Inc, http://www.avenza.com/
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 ******************************************************************************
 *
 * $Log: dgnstroke.cpp,v $
 * Revision 1.9  2004/06/02 15:53:00  warmerda
 * improve divide by zero error checking
 *
 * Revision 1.8  2003/05/21 03:42:01  warmerda
 * Expanded tabs
 *
 * Revision 1.7  2002/04/29 19:52:29  warmerda
 * clean up memory after stroking curve
 *
 * Revision 1.6  2002/01/15 06:40:21  warmerda
 * default PI
 *
 * Revision 1.5  2001/07/18 04:55:16  warmerda
 * added CPL_CSVID
 *
 * Revision 1.4  2001/03/08 18:07:01  warmerda
 * Corrected computation of padfM*[k] in case where denominator of the
 * general equations goes to zero.
 *
 * Revision 1.3  2001/03/07 19:29:46  warmerda
 * added support for stroking curves
 *
 * Revision 1.2  2001/03/07 13:56:44  warmerda
 * updated copyright to be held by Avenza Systems
 *
 * Revision 1.1  2001/01/22 14:54:51  warmerda
 * New
 *
 */