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Diffstat (limited to 'src/positioning/qclipperutils.cpp')
-rw-r--r-- | src/positioning/qclipperutils.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/positioning/qclipperutils.cpp b/src/positioning/qclipperutils.cpp new file mode 100644 index 00000000..08e65712 --- /dev/null +++ b/src/positioning/qclipperutils.cpp @@ -0,0 +1,100 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtPositioning module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qclipperutils_p.h" + +QT_BEGIN_NAMESPACE + +static const double kClipperScaleFactor = 281474976710656.0; // 48 bits of precision +static const double kClipperScaleFactorInv = 1.0 / kClipperScaleFactor; + +double QClipperUtils::clipperScaleFactor() +{ + return kClipperScaleFactor; +} + +QDoubleVector2D QClipperUtils::toVector2D(const IntPoint &p) +{ + return QDoubleVector2D(double(p.X) * kClipperScaleFactorInv, double(p.Y) * kClipperScaleFactorInv); +} + +IntPoint QClipperUtils::toIntPoint(const QDoubleVector2D &p) +{ + return IntPoint(cInt(p.x() * kClipperScaleFactor), cInt(p.y() * kClipperScaleFactor)); +} + +QList<QDoubleVector2D> QClipperUtils::pathToQList(const Path &path) +{ + QList<QDoubleVector2D> res; + res.reserve(path.size()); + for (const IntPoint &ip: path) + res.append(toVector2D(ip)); + return res; +} + +QList<QList<QDoubleVector2D> > QClipperUtils::pathsToQList(const Paths &paths) +{ + QList<QList<QDoubleVector2D> > res; + res.reserve(paths.size()); + for (const Path &p: paths) { + res.append(pathToQList(p)); + } + return res; +} + +Path QClipperUtils::qListToPath(const QList<QDoubleVector2D> &list) +{ + Path res; + res.reserve(list.size()); + for (const QDoubleVector2D &p: list) + res.push_back(toIntPoint(p)); + return res; +} + +Paths QClipperUtils::qListToPaths(const QList<QList<QDoubleVector2D> > &lists) +{ + Paths res; + res.reserve(lists.size()); + for (const QList<QDoubleVector2D> &l: lists) { + res.push_back(qListToPath(l)); + } + return res; +} + +QT_END_NAMESPACE |