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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "Qt3DSRenderPath.h"
#include "Qt3DSRenderPathSubPath.h"

using namespace qt3ds::render;

void SPath::AddSubPath(SPathSubPath &inSegment)
{
    SPathSubPath *lastSegment = NULL;
    inSegment.m_Path = this;
    inSegment.m_NextSubPath = NULL;
    if (m_FirstSubPath) {
        // find last segment
        for (lastSegment = m_FirstSubPath; lastSegment && lastSegment->m_NextSubPath;
             lastSegment = lastSegment->m_NextSubPath)
            ;
        lastSegment->m_NextSubPath = &inSegment;
    } else
        m_FirstSubPath = &inSegment;
}

void SPath::ClearSubPaths()
{
    SPathSubPath *nextSegment = NULL;
    for (SPathSubPath *theSegment = m_FirstSubPath; theSegment; theSegment = nextSegment) {
        nextSegment = theSegment->m_NextSubPath;
        theSegment->m_Path = NULL;
        theSegment->m_NextSubPath = NULL;
    }
    m_FirstSubPath = NULL;
}