1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #ifndef INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX 29 #define INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX 30 31 #include <sal/config.h> 32 #include <boost/shared_ptr.hpp> 33 34 35 /* Definition of AnimationFunction interface */ 36 37 namespace slideshow 38 { 39 namespace internal 40 { 41 /** Interface describing an abstract animation function. 42 43 Use this interface to model time-dependent animation 44 functions of one variable. 45 */ 46 class AnimationFunction 47 { 48 public: 49 virtual ~AnimationFunction() {} 50 51 /** Operator to calculate function value. 52 53 This method calculates the function value for the 54 given time instant t. 55 56 @param t 57 Current time instant, must be in the range [0,1] 58 59 @return the function value, typically in relative 60 user coordinate space ([0,1] range). 61 */ 62 virtual double operator()( double t ) const = 0; 63 64 }; 65 66 typedef ::boost::shared_ptr< AnimationFunction > AnimationFunctionSharedPtr; 67 68 } 69 } 70 71 #endif /* INCLUDED_SLIDESHOW_ANIMATIONFUNCTION_HXX */ 72