basegfx/source/range/b2drange.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <basegfx/range/b2drange.hxx>
  21 #include <basegfx/range/b2irange.hxx>
  22 #include <basegfx/matrix/b2dhommatrix.hxx>
  23
  24 namespace basegfx
  25 {
  26     B2DRange::B2DRange( const B2IRange& rRange ) :
  27         maRangeX(),
  28         maRangeY()
  29     {
  30         if( !rRange.isEmpty() )
  31         {
  32             maRangeX = MyBasicRange(rRange.getMinX());
  33             maRangeY = MyBasicRange(rRange.getMinY());
  34
  35             maRangeX.expand(rRange.getMaxX());
  36             maRangeY.expand(rRange.getMaxY());
  37         }
  38     }
  39
  40     void B2DRange::transform(const B2DHomMatrix& rMatrix)
  41     {
  42         if(!isEmpty() && !rMatrix.isIdentity())
  43         {
  44             const B2DRange aSource(*this);
  45             reset();
  46             expand(rMatrix * B2DPoint(aSource.getMinX(), aSource.getMinY()));
  47             expand(rMatrix * B2DPoint(aSource.getMaxX(), aSource.getMinY()));
  48             expand(rMatrix * B2DPoint(aSource.getMinX(), aSource.getMaxY()));
  49             expand(rMatrix * B2DPoint(aSource.getMaxX(), aSource.getMaxY()));
  50         }
  51     }
  52
  53     B2DRange& B2DRange::operator*=( const ::basegfx::B2DHomMatrix& rMat )
  54     {
  55         transform(rMat);
  56         return *this;
  57     }
  58
  59     const B2DRange& B2DRange::getUnitB2DRange()
  60     {
  61         static const B2DRange aUnitB2DRange(0.0, 0.0, 1.0, 1.0);
  62
  63         return aUnitB2DRange;
  64     }
  65
  66     B2IRange fround(const B2DRange& rRange)
  67     {
  68         return rRange.isEmpty() ?
  69             B2IRange() :
  70             B2IRange(fround(rRange.getMinimum()),
  71                      fround(rRange.getMaximum()));
  72     }
  73
  74     B2DRange operator*( const ::basegfx::B2DHomMatrix& rMat, const B2DRange& rB2DRange )
  75     {
  76         B2DRange aRes( rB2DRange );
  77         return aRes *= rMat;
  78     }
  79
  80 } // end of namespace basegfx
  81
  82 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */