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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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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