/****************************************************************************+ −
**+ −
** Copyright (C) 2009 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.+ −
**+ −
** $QT_BEGIN_LICENSE:LGPL$+ −
** No Commercial Usage+ −
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** contained in the Technology Preview License Agreement accompanying+ −
** this package.+ −
**+ −
** 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+ −
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** packaging of this file. Please review the following information to+ −
** ensure the GNU Lesser General Public License version 2.1 requirements+ −
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**+ −
** 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.+ −
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** If you have questions regarding the use of this file, please contact+ −
** Nokia at qt-info@nokia.com.+ −
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** $QT_END_LICENSE$+ −
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****************************************************************************/+ −
+ −
#include "guidecircle.h"+ −
+ −
static float PI2 = 2*3.1415f;+ −
+ −
GuideCircle::GuideCircle(const QRectF &rect, float startAngle, float span, DIRECTION dir, Guide *follows) : Guide(follows)+ −
{+ −
this->radiusX = rect.width() / 2.0;+ −
this->radiusY = rect.height() / 2.0;+ −
this->posX = rect.topLeft().x();+ −
this->posY = rect.topLeft().y();+ −
this->spanRad = span * PI2 / -360.0;+ −
if (dir == CCW){+ −
this->startAngleRad = startAngle * PI2 / -360.0;+ −
this->endAngleRad = startAngleRad + spanRad;+ −
this->stepAngleRad = this->spanRad / this->length();+ −
}+ −
else{+ −
this->startAngleRad = spanRad + (startAngle * PI2 / -360.0);+ −
this->endAngleRad = startAngle * PI2 / -360.0;+ −
this->stepAngleRad = -this->spanRad / this->length();+ −
}+ −
}+ −
+ −
float GuideCircle::length()+ −
{+ −
return qAbs(this->radiusX * spanRad);+ −
}+ −
+ −
QPointF GuideCircle::startPos()+ −
{+ −
return QPointF((posX + radiusX + radiusX * cos(startAngleRad)) * scaleX,+ −
(posY + radiusY + radiusY * sin(startAngleRad)) * scaleY);+ −
}+ −
+ −
QPointF GuideCircle::endPos()+ −
{+ −
return QPointF((posX + radiusX + radiusX * cos(endAngleRad)) * scaleX,+ −
(posY + radiusY + radiusY * sin(endAngleRad)) * scaleY);+ −
}+ −
+ −
void GuideCircle::guide(DemoItem *item, float moveSpeed)+ −
{+ −
float frame = item->guideFrame - this->startLength;+ −
QPointF end((posX + radiusX + radiusX * cos(startAngleRad + (frame * stepAngleRad))) * scaleX,+ −
(posY + radiusY + radiusY * sin(startAngleRad + (frame * stepAngleRad))) * scaleY);+ −
this->move(item, end, moveSpeed);+ −
}+ −