diff options
Diffstat (limited to 'slideshow/source/engine/transitions/doublediamondwipe.cxx')
-rw-r--r-- | slideshow/source/engine/transitions/doublediamondwipe.cxx | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/doublediamondwipe.cxx b/slideshow/source/engine/transitions/doublediamondwipe.cxx new file mode 100644 index 000000000000..62a9f342ed86 --- /dev/null +++ b/slideshow/source/engine/transitions/doublediamondwipe.cxx @@ -0,0 +1,66 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_slideshow.hxx" + +#include <canvas/debug.hxx> +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include "doublediamondwipe.hxx" + + +namespace slideshow { +namespace internal { + +::basegfx::B2DPolyPolygon DoubleDiamondWipe::operator () ( double t ) +{ + // outer: + const double a = ::basegfx::pruneScaleValue( 0.25 + (t * 0.75) ); + ::basegfx::B2DPolygon poly; + poly.append( ::basegfx::B2DPoint( 0.5 + a, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 - a ) ); + poly.append( ::basegfx::B2DPoint( 0.5 - a, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 + a ) ); + poly.setClosed(true); + ::basegfx::B2DPolyPolygon res(poly); + + // inner (reverse order to clip): + const double b = ::basegfx::pruneScaleValue( (1.0 - t) * 0.25 ); + poly.clear(); + poly.append( ::basegfx::B2DPoint( 0.5 + b, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 + b ) ); + poly.append( ::basegfx::B2DPoint( 0.5 - b, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 - b ) ); + poly.setClosed(true); + res.append(poly); + + return res; +} + +} +} |