b9337e22ce
see https://gerrit.libreoffice.org/#/c/3367/ and Change-Id: I00c96fa77d04b33a6f8c8cd3490dfcd9bdc9e84a for details Change-Id: I199a75bc4042af20817265d5ef85b1134a96ff5a
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef _BGFX_TOOLS_LERP_HXX
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#define _BGFX_TOOLS_LERP_HXX
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#include <sal/types.h>
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namespace basegfx
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{
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namespace tools
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{
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/** Generic linear interpolator
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@tpl ValueType
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Must have operator+ and operator* defined, and should
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have value semantics.
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@param t
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As usual, t must be in the [0,1] range
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*/
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template< typename ValueType > ValueType lerp( const ValueType& rFrom,
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const ValueType& rTo,
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double t )
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{
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// This is only to suppress a double->int warning. All other
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// types should be okay here.
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return static_cast<ValueType>( (1.0-t)*rFrom + t*rTo );
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}
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}
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}
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#endif /* _BGFX_TOOLS_LERP_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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