/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #include #include #include #include static void validateInput(const std::vector& rKeyStops) { #ifdef DBG_UTIL OSL_ENSURE( rKeyStops.size() > 1, "KeyStopLerp::KeyStopLerp(): key stop vector must have two entries or more" ); // rKeyStops must be sorted in ascending order for( std::size_t i=1, len=rKeyStops.size(); i rKeyStops[i] ) OSL_FAIL( "KeyStopLerp::KeyStopLerp(): time vector is not sorted in ascending order!" ); } #else (void)rKeyStops; #endif } namespace basegfx::utils { KeyStopLerp::KeyStopLerp( std::vector&& rKeyStops ) : maKeyStops(std::move(rKeyStops)), mnLastIndex(0) { validateInput(maKeyStops); } KeyStopLerp::KeyStopLerp( const ::css::uno::Sequence& rKeyStops ) : maKeyStops(rKeyStops.begin(), rKeyStops.end()), mnLastIndex(0) { validateInput(maKeyStops); } KeyStopLerp::ResultType KeyStopLerp::lerp(double fAlpha) const { // cached value still okay? if( maKeyStops.at(mnLastIndex) < fAlpha || maKeyStops.at(mnLastIndex+1) >= fAlpha ) { // nope, find new index mnLastIndex = std::min( maKeyStops.size()-2, // range is ensured by max below std::max( 0, std::distance( maKeyStops.begin(), std::lower_bound( maKeyStops.begin(), maKeyStops.end(), fAlpha )) - 1 )); } // lerp between stop and stop+1 const double fRawLerp= (fAlpha-maKeyStops.at(mnLastIndex)) / (maKeyStops.at(mnLastIndex+1) - maKeyStops.at(mnLastIndex)); // clamp to permissible range (input fAlpha might be // everything) return ResultType( mnLastIndex, std::clamp(fRawLerp,0.0,1.0)); } } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ ption> LibreOffice 核心代码仓库文档基金会

path: root/qadevOOo/runner/share/Watcher.java

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