slideshow/source/engine/transitions/barndoorwipe.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/numeric/ftools.hxx>
  36 #include <basegfx/matrix/b2dhommatrix.hxx>
  37 #include "barndoorwipe.hxx"
  38
  39
  40 namespace slideshow {
  41 namespace internal {
  42
  43 ::basegfx::B2DPolyPolygon BarnDoorWipe::operator () ( double t )
  44 {
  45     if (m_doubled)
  46         t /= 2.0;
  47
  48     ::basegfx::B2DHomMatrix aTransform;
  49     aTransform.translate( -0.5, -0.5 );
  50     aTransform.scale( ::basegfx::pruneScaleValue(t), 1.0 );
  51     aTransform.translate( 0.5, 0.5 );
  52     ::basegfx::B2DPolygon poly( m_unitRect );
  53     poly.transform( aTransform );
  54     ::basegfx::B2DPolyPolygon res(poly);
  55
  56     if (m_doubled) {
  57         aTransform.identity();
  58         aTransform.translate( -0.5, -0.5 );
  59         aTransform.rotate( M_PI_2 );
  60         aTransform.translate( 0.5, 0.5 );
  61         poly.transform( aTransform );
  62         res.append(poly);
  63     }
  64
  65     return res;
  66 }
  67
  68 }
  69 }