curve_bezier.cpp
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- /*
- * ===========================================================================
- * PRODUCTION $Log: curve_bezier.cpp,v $
- * PRODUCTION Revision 1000.1 2004/06/01 20:50:06 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.3
- * PRODUCTION
- * ===========================================================================
- */
- /* $Id: curve_bezier.cpp,v 1000.1 2004/06/01 20:50:06 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software / database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software / database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Authors: Mike DiCuccio
- *
- * File Description:
- *
- */
- #include <ncbi_pch.hpp>
- #include <gui/math/curve_bezier.hpp>
- #include <util/math/matrix.hpp>
- BEGIN_NCBI_SCOPE
- CCurveBezier::CCurveBezier()
- : m_Error(0.002f)
- {
- }
- ///
- /// evaluate the parameter matrix of a given curve
- ///
- void CCurveBezier::Recalc()
- {
- static const CMatrix4<float> basis(-1.0f, 3.0f, -3.0f, 1.0f,
- 3.0f, -6.0f, 3.0f, 0.0f,
- -3.0f, 3.0f, 0.0f, 0.0f,
- 1.0f, 0.0f, 0.0f, 0.0f);
- m_ParamMatrix = basis * m_Points;
- }
- const CCurveBezier::TControlPoints& CCurveBezier::x_ParamMatrix() const
- {
- return m_ParamMatrix;
- }
- END_NCBI_SCOPE
- /*
- * ===========================================================================
- * $Log: curve_bezier.cpp,v $
- * Revision 1000.1 2004/06/01 20:50:06 gouriano
- * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.3
- *
- * Revision 1.3 2004/05/21 22:27:43 gorelenk
- * Added PCH ncbi_pch.hpp
- *
- * Revision 1.2 2004/03/11 20:07:29 dicuccio
- * Corrected include path
- *
- * Revision 1.1 2004/03/10 14:04:33 dicuccio
- * Initial revision
- *
- * ===========================================================================
- */