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     {
  28         if (!rRange.isEmpty())
  29         {
  30             maRangeX = basegfx::BasicRange<ValueType, TraitsType>(rRange.getMinX());
  31             maRangeY = basegfx::BasicRange<ValueType, TraitsType>(rRange.getMinY());
  32
  33             maRangeX.expand(rRange.getMaxX());
  34             maRangeY.expand(rRange.getMaxY());
  35         }
  36     }
  37
  38     void B2DRange::transform(const B2DHomMatrix& rMatrix)
  39     {
  40         if(!isEmpty() && !rMatrix.isIdentity())
  41         {
  42             const B2DRange aSource(*this);
  43             reset();
  44             expand(rMatrix * B2DPoint(aSource.getMinX(), aSource.getMinY()));
  45             expand(rMatrix * B2DPoint(aSource.getMaxX(), aSource.getMinY()));
  46             expand(rMatrix * B2DPoint(aSource.getMinX(), aSource.getMaxY()));
  47             expand(rMatrix * B2DPoint(aSource.getMaxX(), aSource.getMaxY()));
  48         }
  49     }
  50
  51     B2DRange& B2DRange::operator*=(const basegfx::B2DHomMatrix& rMatrix)
  52     {
  53         transform(rMatrix);
  54         return *this;
  55     }
  56
  57     const B2DRange& B2DRange::getUnitB2DRange()
  58     {
  59         static const B2DRange aUnitB2DRange(0.0, 0.0, 1.0, 1.0);
  60
  61         return aUnitB2DRange;
  62     }
  63
  64     B2IRange fround(const B2DRange& rRange)
  65     {
  66         return rRange.isEmpty() ?
  67             B2IRange() :
  68             B2IRange(fround(rRange.getMinimum()),
  69                      fround(rRange.getMaximum()));
  70     }
  71
  72     B2DRange operator*( const ::basegfx::B2DHomMatrix& rMat, const B2DRange& rB2DRange )
  73     {
  74         B2DRange aRes( rB2DRange );
  75         aRes *= rMat;
  76         return aRes;
  77     }
  78
  79 } // end of namespace basegfx
  80
  81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */