193 lines
5.1 KiB
C++
193 lines
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org 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
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "controller/SlsAnimationFunction.hxx"
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#include "model/SlsPageDescriptor.hxx"
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#include "view/SlideSorterView.hxx"
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#include <osl/diagnose.hxx>
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#include <rtl/math.hxx>
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namespace sd { namespace slidesorter { namespace controller {
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double AnimationFunction::Linear (const double nTime)
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{
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OSL_ASSERT(nTime>=0.0 && nTime<=1.0);
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return nTime;
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}
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double AnimationFunction::Blend (
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const double nStartValue,
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const double nEndValue,
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const double nTime)
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{
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return nStartValue*(1-nTime) + nEndValue*nTime;
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}
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void AnimationFunction::ApplyButtonAlphaChange(
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const model::SharedPageDescriptor& rpDescriptor,
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view::SlideSorterView& rView,
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const double nButtonAlpha,
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const double nButtonBarAlpha)
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{
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if (rpDescriptor)
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{
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rpDescriptor->GetVisualState().SetButtonAlpha(nButtonAlpha);
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rpDescriptor->GetVisualState().SetButtonBarAlpha(nButtonBarAlpha);
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rView.RequestRepaint(rpDescriptor);
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}
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}
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//===== AnimationBezierFunction ===============================================
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AnimationBezierFunction::AnimationBezierFunction (
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const double nX1,
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const double nY1)
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: mnX1(nX1),
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mnY1(nY1),
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mnX2(1-nY1),
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mnY2(1-nX1)
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{
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}
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::basegfx::B2DPoint AnimationBezierFunction::operator() (const double nT)
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{
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return ::basegfx::B2DPoint(
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EvaluateComponent(nT, mnX1, mnX2),
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EvaluateComponent(nT, mnY1, mnY2));
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}
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double AnimationBezierFunction::EvaluateComponent (
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const double nT,
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const double nV1,
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const double nV2)
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{
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const double nS (1-nT);
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// While the control point values 1 and 2 are explicitly given the start
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// and end values are implicitly given.
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const double nV0 (0);
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const double nV3 (1);
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const double nV01 (nS*nV0 + nT*nV1);
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const double nV12 (nS*nV1 + nT*nV2);
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const double nV23 (nS*nV2 + nT*nV3);
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const double nV012 (nS*nV01 + nT*nV12);
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const double nV123 (nS*nV12 + nT*nV23);
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const double nV0123 (nS*nV012 + nT*nV123);
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return nV0123;
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}
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//===== AnimationParametricFunction ===========================================
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AnimationParametricFunction::AnimationParametricFunction (const ParametricFunction& rFunction)
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: maY()
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{
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const sal_Int32 nSampleCount (64);
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// Sample the given parametric function.
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::std::vector<basegfx::B2DPoint> aPoints;
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aPoints.reserve(nSampleCount);
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for (sal_Int32 nIndex=0; nIndex<nSampleCount; ++nIndex)
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{
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const double nT (nIndex/double(nSampleCount-1));
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aPoints.push_back(basegfx::B2DPoint(rFunction(nT)));
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}
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// Interpolate at evenly spaced points.
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maY.clear();
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maY.reserve(nSampleCount);
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double nX0 (aPoints[0].getX());
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double nY0 (aPoints[0].getY());
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double nX1 (aPoints[1].getX());
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double nY1 (aPoints[1].getY());
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sal_Int32 nIndex (1);
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for (sal_Int32 nIndex2=0; nIndex2<nSampleCount; ++nIndex2)
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{
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const double nX (nIndex2 / double(nSampleCount-1));
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while (nX > nX1 && nIndex<nSampleCount)
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{
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nX0 = nX1;
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nY0 = nY1;
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nX1 = aPoints[nIndex].getX();
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nY1 = aPoints[nIndex].getY();
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++nIndex;
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}
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const double nU ((nX-nX1) / (nX0 - nX1));
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const double nY (nY0*nU + nY1*(1-nU));
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maY.push_back(nY);
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}
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}
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double AnimationParametricFunction::operator() (const double nX)
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{
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const sal_Int32 nIndex0 (static_cast<sal_Int32>(nX * maY.size()));
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const double nX0 (nIndex0 / double(maY.size()-1));
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const sal_uInt32 nIndex1 (nIndex0 + 1);
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const double nX1 (nIndex1 / double(maY.size()-1));
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if (nIndex0<=0)
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return maY[0];
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else if (sal_uInt32(nIndex0)>=maY.size() || nIndex1>=maY.size())
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return maY[maY.size()-1];
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const double nU ((nX-nX1) / (nX0 - nX1));
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return maY[nIndex0]*nU + maY[nIndex1]*(1-nU);
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}
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} } } // end of namespace ::sd::slidesorter::controller
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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