74 lines
2.4 KiB
C++
74 lines
2.4 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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#ifndef INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX
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#define INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX
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#include <sal/config.h>
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#include <boost/shared_ptr.hpp>
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/* Definition of AnimationFunction interface */
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namespace slideshow
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{
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namespace internal
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{
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/** Interface describing an abstract animation function.
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Use this interface to model time-dependent animation
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functions of one variable.
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*/
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class AnimationFunction
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{
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public:
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virtual ~AnimationFunction() {}
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/** Operator to calculate function value.
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This method calculates the function value for the
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given time instant t.
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@param t
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Current time instant, must be in the range [0,1]
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@return the function value, typically in relative
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user coordinate space ([0,1] range).
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*/
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virtual double operator()( double t ) const = 0;
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};
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typedef ::boost::shared_ptr< AnimationFunction > AnimationFunctionSharedPtr;
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}
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}
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#endif /* INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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