9a76c8ae6a
2006/10/18 19:59:39 thb 1.3.18.4: RESYNC: (1.3-1.5); FILE MERGED 2006/10/18 10:45:56 thb 1.3.18.3: #142144# Moving to native M_PI_* constants 2006/04/24 13:25:34 thb 1.3.18.2: #i53194# Unified include statements (local headers always have double quotes; external headers angle brackets); reverted EventMultiplexer pause events to shared_ptr; removed EventMultiplexer::removeViewHandler(), since the handler is held weakly, anyway. 2006/03/24 18:23:26 thb 1.3.18.1: #i37778# Moved whole slideshow engine from namespace presentation (which conflicts with one of the UNO subnamespaces) to slideshow
141 lines
4.7 KiB
C++
141 lines
4.7 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: spiralwipe.cxx,v $
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*
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* $Revision: 1.6 $
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*
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* last change: $Author: kz $ $Date: 2006-12-13 15:46:41 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_slideshow.hxx"
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#include <canvas/debug.hxx>
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#include "spiralwipe.hxx"
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#include "transitiontools.hxx"
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <basegfx/numeric/ftools.hxx>
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namespace slideshow {
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namespace internal {
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SpiralWipe::SpiralWipe( sal_Int32 nElements, bool flipOnYAxis )
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: m_elements(nElements),
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m_sqrtElements( static_cast<sal_Int32>(
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sqrt( static_cast<double>(nElements) ) ) ),
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m_flipOnYAxis(flipOnYAxis)
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{
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}
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::basegfx::B2DPolyPolygon SpiralWipe::calcNegSpiral( double t ) const
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{
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const double area = (t * m_elements);
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const double e = (sqrt(area) / 2.0);
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const sal_Int32 edge = (static_cast<sal_Int32>(e) * 2);
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::basegfx::B2DHomMatrix aTransform;
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aTransform.translate( -0.5, -0.5 );
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const double edge_ = ::basegfx::pruneScaleValue(
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static_cast<double>(edge) / m_sqrtElements );
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aTransform.scale( edge_, edge_ );
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aTransform.translate( 0.5, 0.5 );
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::basegfx::B2DPolygon poly( createUnitRect() );
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poly.transform( aTransform );
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::basegfx::B2DPolyPolygon res(poly);
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if (! ::basegfx::fTools::equalZero( 1.0 - t )) {
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const sal_Int32 edge1 = (edge + 1);
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sal_Int32 len = static_cast<sal_Int32>( (e - (edge /2)) * edge1 * 4 );
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double w = M_PI_2;
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while (len > 0) {
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const sal_Int32 alen = (len > edge1 ? edge1 : len);
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len -= alen;
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poly = createUnitRect();
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aTransform.identity();
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aTransform.scale(
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::basegfx::pruneScaleValue( static_cast<double>(alen) / m_sqrtElements ),
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::basegfx::pruneScaleValue( 1.0 / m_sqrtElements ) );
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aTransform.translate(
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- ::basegfx::pruneScaleValue(
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static_cast<double>(edge / 2) / m_sqrtElements ),
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::basegfx::pruneScaleValue(
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static_cast<double>(edge / 2) / m_sqrtElements ) );
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aTransform.rotate( w );
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w -= M_PI_2;
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aTransform.translate( 0.5, 0.5 );
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poly.transform( aTransform );
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res.append(poly);
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}
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}
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return res;
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}
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::basegfx::B2DPolyPolygon SpiralWipe::operator () ( double t )
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{
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::basegfx::B2DPolyPolygon res( createUnitRect() );
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::basegfx::B2DPolyPolygon innerSpiral( calcNegSpiral( 1.0 - t ) );
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innerSpiral.flip();
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res.append(innerSpiral);
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return m_flipOnYAxis ? flipOnYAxis(res) : res;
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}
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::basegfx::B2DPolyPolygon BoxSnakesWipe::operator () ( double t )
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{
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::basegfx::B2DPolyPolygon res( createUnitRect() );
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::basegfx::B2DPolyPolygon innerSpiral( calcNegSpiral( 1.0 - t ) );
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innerSpiral.flip();
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if (m_fourBox) {
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::basegfx::B2DHomMatrix aTransform;
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aTransform.scale( 0.5, 0.5 );
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innerSpiral.transform( aTransform );
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res.append(innerSpiral);
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res.append( flipOnXAxis(innerSpiral) );
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innerSpiral = flipOnYAxis(innerSpiral);
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res.append(innerSpiral);
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res.append( flipOnXAxis(innerSpiral) );
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}
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else {
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::basegfx::B2DHomMatrix aTransform;
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aTransform.scale( 1.0, 0.5 );
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innerSpiral.transform( aTransform );
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res.append(innerSpiral);
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res.append( flipOnXAxis(innerSpiral) );
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}
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return m_flipOnYAxis ? flipOnYAxis(res) : res;
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}
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}
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}
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