slideshow/source/engine/transitions/sweepwipe.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_slideshow.hxx"
  33
  34 #include <canvas/debug.hxx>
  35 #include <basegfx/matrix/b2dhommatrix.hxx>
  36 #include <basegfx/numeric/ftools.hxx>
  37 #include "clockwipe.hxx"
  38 #include "sweepwipe.hxx"
  39 #include "transitiontools.hxx"
  40
  41
  42 namespace slideshow {
  43 namespace internal {
  44
  45 ::basegfx::B2DPolyPolygon SweepWipe::operator () ( double t )
  46 {
  47     t /= 2.0;
  48     if (! m_center)
  49         t /= 2.0;
  50     if (!m_single && !m_oppositeVertical)
  51         t /= 2.0;
  52
  53     ::basegfx::B2DPolygon poly( ClockWipe::calcCenteredClock( 0.25 + t ) );
  54     ::basegfx::B2DHomMatrix aTransform;
  55     if (m_center) {
  56         aTransform.translate( 0.5, 0.0 );
  57         poly.transform( aTransform );
  58     }
  59     ::basegfx::B2DPolyPolygon res(poly);
  60
  61     if (! m_single) {
  62         aTransform.identity();
  63         if (m_oppositeVertical) {
  64             aTransform.scale( 1.0, -1.0 );
  65             aTransform.translate( 0.0, 1.0 );
  66             poly.transform( aTransform );
  67             poly.flip();
  68         }
  69         else {
  70             aTransform.translate( -0.5, -0.5 );
  71             aTransform.rotate( M_PI );
  72             aTransform.translate( 0.5, 0.5 );
  73             poly.transform( aTransform );
  74         }
  75         res.append(poly);
  76     }
  77
  78     return m_flipOnYAxis ? flipOnYAxis(res) : res;
  79 }
  80
  81 }
  82 }