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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "guideline.h"
#include <cmath>
GuideLine::GuideLine(const QLineF &line, Guide *follows) : Guide(follows)
{
this->line = line;
}
GuideLine::GuideLine(const QPointF &end, Guide *follows) : Guide(follows)
{
if (follows)
this->line = QLineF(prevGuide->endPos(), end);
else
this->line = QLineF(QPointF(0, 0), end);
}
float GuideLine::length()
{
return line.length();
}
QPointF GuideLine::startPos()
{
return QPointF(this->line.p1().x() * scaleX, this->line.p1().y() * scaleY);
}
QPointF GuideLine::endPos()
{
return QPointF(this->line.p2().x() * scaleX, this->line.p2().y() * scaleY);
}
void GuideLine::guide(DemoItem *item, float moveSpeed)
{
float frame = item->guideFrame - this->startLength;
float endX = (this->line.p1().x() + (frame * this->line.dx() / this->length())) * scaleX;
float endY = (this->line.p1().y() + (frame * this->line.dy() / this->length())) * scaleY;
QPointF pos(endX, endY);
this->move(item, pos, moveSpeed);
}
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