drawinglayer/source/primitive2d/primitivetools2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   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 <drawinglayer/primitive2d/primitivetools2d.hxx>
  21 #include <basegfx/vector/b2dvector.hxx>
  22 #include <drawinglayer/geometry/viewinformation2d.hxx>
  23
  24
  25 namespace drawinglayer::primitive2d
  26 {
  27         void DiscreteMetricDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  28         {
  29             ::osl::MutexGuard aGuard( m_aMutex );
  30
  31             // get the current DiscreteUnit, look at X and Y and use the maximum
  32             const basegfx::B2DVector aDiscreteVector(rViewInformation.getInverseObjectToViewTransformation() * basegfx::B2DVector(1.0, 1.0));
  33             const double fDiscreteUnit(std::min(fabs(aDiscreteVector.getX()), fabs(aDiscreteVector.getY())));
  34
  35             if(!getBuffered2DDecomposition().empty() && !basegfx::fTools::equal(fDiscreteUnit, getDiscreteUnit()))
  36             {
  37                 // conditions of last local decomposition have changed, delete
  38                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
  39             }
  40
  41             if(getBuffered2DDecomposition().empty())
  42             {
  43                 // remember new valid DiscreteUnit
  44                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->mfDiscreteUnit = fDiscreteUnit;
  45             }
  46
  47             // call base implementation
  48             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
  49         }
  50
  51
  52
  53
  54         void ViewportDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  55         {
  56             ::osl::MutexGuard aGuard( m_aMutex );
  57
  58             // get the current Viewport
  59             const basegfx::B2DRange& rViewport = rViewInformation.getViewport();
  60
  61             if(!getBuffered2DDecomposition().empty() && !rViewport.equal(getViewport()))
  62             {
  63                 // conditions of last local decomposition have changed, delete
  64                 const_cast< ViewportDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
  65             }
  66
  67             if(getBuffered2DDecomposition().empty())
  68             {
  69                 // remember new valid DiscreteUnit
  70                 const_cast< ViewportDependentPrimitive2D* >(this)->maViewport = rViewport;
  71             }
  72
  73             // call base implementation
  74             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
  75         }
  76
  77         void ViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  78         {
  79             ::osl::MutexGuard aGuard( m_aMutex );
  80
  81             // get the current ViewTransformation
  82             const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
  83
  84             if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
  85             {
  86                 // conditions of last local decomposition have changed, delete
  87                 const_cast< ViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
  88             }
  89
  90             if(getBuffered2DDecomposition().empty())
  91             {
  92                 // remember new valid ViewTransformation
  93                 const_cast< ViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
  94             }
  95
  96             // call base implementation
  97             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
  98         }
  99
 100         void ObjectAndViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
 101         {
 102             ::osl::MutexGuard aGuard( m_aMutex );
 103
 104             // get the current ViewTransformation
 105             const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
 106
 107             if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
 108             {
 109                 // conditions of last local decomposition have changed, delete
 110                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 111             }
 112
 113             // get the current ObjectTransformation
 114             const basegfx::B2DHomMatrix& rObjectTransformation = rViewInformation.getObjectTransformation();
 115
 116             if(!getBuffered2DDecomposition().empty() && rObjectTransformation != getObjectTransformation())
 117             {
 118                 // conditions of last local decomposition have changed, delete
 119                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 120             }
 121
 122             if(getBuffered2DDecomposition().empty())
 123             {
 124                 // remember new valid ViewTransformation, and ObjectTransformation
 125                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
 126                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maObjectTransformation = rObjectTransformation;
 127             }
 128
 129             // call base implementation
 130             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
 131         }
 132
 133 } // end of namespace
 134
 135 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */