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diff --git a/slideshow/source/engine/transitions/clippingfunctor.cxx b/slideshow/source/engine/transitions/clippingfunctor.cxx
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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*************************************************************************
- *
- * 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 <tools/diagnose_ex.h>
-#include "clippingfunctor.hxx"
-#include "transitiontools.hxx"
-
-#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
-#include <basegfx/polygon/b2dpolygonclipper.hxx>
-#include <basegfx/polygon/b2dpolygontools.hxx>
-#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
-#include <basegfx/matrix/b2dhommatrixtools.hxx>
-
-namespace slideshow
-{
- namespace internal
- {
- ClippingFunctor::ClippingFunctor(const ParametricPolyPolygonSharedPtr& rPolygon,
- const TransitionInfo& rTransitionInfo,
- bool bDirectionForward,
- bool bModeIn ) :
- mpParametricPoly( rPolygon ),
- maStaticTransformation(),
- mbForwardParameterSweep( true ),
- mbSubtractPolygon( false ),
- mbScaleIsotrophically( rTransitionInfo.mbScaleIsotrophically ),
- mbFlip(false)
- {
- ENSURE_OR_THROW( rPolygon,
- "ClippingFunctor::ClippingFunctor(): Invalid parametric polygon" );
-
- // maBackgroundRect serves as the minuent when
- // subtracting a given clip polygon from the
- // background. To speed up the clipper algo, avoid
- // actual intersections of the generated
- // poly-polygon with the minuent - i.e. choose the
- // polygon to subtract from sufficiently large.
-
- // blow up unit rect to (-1,-1),(2,2)
- // AW: Not needed, just use range
- // ::basegfx::B2DHomMatrix aMatrix;
- // aMatrix.scale(3.0,3.0);
- // aMatrix.translate(-1.0,-1.0);
- // maBackgroundRect.transform( aMatrix );
-
- // extract modification info from maTransitionInfo
- // -----------------------------------------------
-
- // perform general transformations _before_ the reverse
- // mode changes. This allows the Transition table to be
- // filled more constitently (otherwise, when e.g. rotating
- // a clip 90 degrees, the REVERSEMETHOD_FLIP_X becomes
- // REVERSEMETHOD_FLIP_Y instead)
- if (rTransitionInfo.mnRotationAngle != 0.0 ||
- rTransitionInfo.mnScaleX != 1.0 ||
- rTransitionInfo.mnScaleY != 1.0)
- {
- maStaticTransformation.translate( -0.5, -0.5 );
- // apply further transformations:
- if (rTransitionInfo.mnRotationAngle != 0.0)
- {
- maStaticTransformation.rotate(
- basegfx::deg2rad(rTransitionInfo.mnRotationAngle) );
- }
- if (rTransitionInfo.mnScaleX != 1.0 ||
- rTransitionInfo.mnScaleY != 1.0)
- {
- maStaticTransformation.scale(
- rTransitionInfo.mnScaleX,
- rTransitionInfo.mnScaleY );
- }
- maStaticTransformation.translate( 0.5, 0.5 );
- }
-
- if( !bDirectionForward )
- {
- // Client has requested reversed
- // direction. Apply TransitionInfo's choice
- // for that
- switch( rTransitionInfo.meReverseMethod )
- {
- default:
- ENSURE_OR_THROW(
- false,
- "TransitionFactory::TransitionFactory(): Unexpected reverse method" );
- break;
-
- case TransitionInfo::REVERSEMETHOD_IGNORE:
- break;
-
- case TransitionInfo::REVERSEMETHOD_INVERT_SWEEP:
- mbForwardParameterSweep = !mbForwardParameterSweep;
- break;
-
- case TransitionInfo::REVERSEMETHOD_SUBTRACT_POLYGON:
- mbSubtractPolygon = !mbSubtractPolygon;
- break;
-
- case TransitionInfo::REVERSEMETHOD_SUBTRACT_AND_INVERT:
- mbForwardParameterSweep = !mbForwardParameterSweep;
- mbSubtractPolygon = !mbSubtractPolygon;
- break;
-
- case TransitionInfo::REVERSEMETHOD_ROTATE_180:
- maStaticTransformation = basegfx::tools::createRotateAroundPoint(0.5, 0.5, M_PI)
- * maStaticTransformation;
- break;
-
- case TransitionInfo::REVERSEMETHOD_FLIP_X:
- maStaticTransformation = basegfx::tools::createScaleTranslateB2DHomMatrix(-1.0, 1.0, 1.0, 0.0)
- * maStaticTransformation;
- mbFlip = true;
- break;
-
- case TransitionInfo::REVERSEMETHOD_FLIP_Y:
- maStaticTransformation = basegfx::tools::createScaleTranslateB2DHomMatrix(1.0, -1.0, 0.0, 1.0)
- * maStaticTransformation;
- mbFlip = true;
- break;
- }
- }
-
- if( !bModeIn )
- {
- // client has requested 'out' mode. Apply
- // TransitionInfo's method of choice
- if( rTransitionInfo.mbOutInvertsSweep )
- mbForwardParameterSweep = !mbForwardParameterSweep;
- else
- mbSubtractPolygon = !mbSubtractPolygon;
- }
- }
-
- ::basegfx::B2DPolyPolygon ClippingFunctor::operator()( double nValue,
- const ::basegfx::B2DSize& rTargetSize )
- {
- // modify clip polygon according to static
- // transformation plus current shape size
- ::basegfx::B2DHomMatrix aMatrix( maStaticTransformation );
-
- // retrieve current clip polygon
- ::basegfx::B2DPolyPolygon aClipPoly = (*mpParametricPoly)(
- mbForwardParameterSweep ? nValue : 1.0 - nValue );
-
- // TODO(Q4): workaround here, better be fixed in cppcanvas
- if (aClipPoly.count() == 0)
- aClipPoly.append( basegfx::B2DPolygon() );
-
- if (mbFlip)
- aClipPoly.flip();
-
- // currently, clipper cannot cope with curves. Subdivide first
- // AW: Should be no longer necessary; clipping tools are now bezier-safe
- // if( aClipPoly.areControlPointsUsed() )
- // aClipPoly = ::basegfx::tools::adaptiveSubdivideByAngle(aClipPoly);
-
- if( mbSubtractPolygon )
- {
- // subtract given polygon from background
- // rect. Do that before any transformations.
-
- // calc maBackgroundRect \ aClipPoly
- // =================================
-
- // AW: Simplified
- // use a range with fixed size (-1,-1),(2,2)
- const basegfx::B2DRange aBackgroundRange(-1, -1, 2, 2);
- const basegfx::B2DRange aClipPolyRange(aClipPoly.getB2DRange());
-
- if(aBackgroundRange.isInside(aClipPolyRange))
- {
- // combine polygons; make the clip polygon the hole
- aClipPoly = ::basegfx::tools::correctOrientations(aClipPoly);
- aClipPoly.flip();
- aClipPoly.insert(0, basegfx::tools::createPolygonFromRect(aBackgroundRange));
- }
- else
- {
- // when not completely inside aBackgroundRange clipping is needed
- // substract aClipPoly from aBackgroundRange
- const basegfx::B2DPolyPolygon aBackgroundPolyPoly(basegfx::tools::createPolygonFromRect(aBackgroundRange));
- aClipPoly = basegfx::tools::solvePolygonOperationDiff(aBackgroundPolyPoly, aClipPoly);
- }
- }
-
- // scale polygon up to current shape size
- if( mbScaleIsotrophically )
- {
- const double nScale( ::std::max( rTargetSize.getX(),
- rTargetSize.getY() ) );
- aMatrix.scale( nScale, nScale );
- aMatrix.translate( -(nScale-rTargetSize.getX())/2.0,
- -(nScale-rTargetSize.getY())/2.0 );
- }
- else
- {
- aMatrix.scale( rTargetSize.getX(),
- rTargetSize.getY() );
- }
-
- // apply cumulative transformation to clip polygon
- aClipPoly.transform( aMatrix );
-
- return aClipPoly;
- }
-
- }
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 09:44:13 +0000