Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
89 lines
3.5 KiB
C++
89 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "guidecircle.h"
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static float PI2 = 2*3.1415f;
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GuideCircle::GuideCircle(const QRectF &rect, float startAngle, float span, DIRECTION dir, Guide *follows) : Guide(follows)
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{
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this->radiusX = rect.width() / 2.0;
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this->radiusY = rect.height() / 2.0;
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this->posX = rect.topLeft().x();
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this->posY = rect.topLeft().y();
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this->spanRad = span * PI2 / -360.0;
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if (dir == CCW){
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this->startAngleRad = startAngle * PI2 / -360.0;
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this->endAngleRad = startAngleRad + spanRad;
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this->stepAngleRad = this->spanRad / this->length();
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}
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else{
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this->startAngleRad = spanRad + (startAngle * PI2 / -360.0);
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this->endAngleRad = startAngle * PI2 / -360.0;
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this->stepAngleRad = -this->spanRad / this->length();
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}
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}
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float GuideCircle::length()
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{
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return qAbs(this->radiusX * spanRad);
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}
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QPointF GuideCircle::startPos()
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{
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return QPointF((posX + radiusX + radiusX * cos(startAngleRad)) * scaleX,
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(posY + radiusY + radiusY * sin(startAngleRad)) * scaleY);
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}
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QPointF GuideCircle::endPos()
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{
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return QPointF((posX + radiusX + radiusX * cos(endAngleRad)) * scaleX,
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(posY + radiusY + radiusY * sin(endAngleRad)) * scaleY);
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}
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void GuideCircle::guide(DemoItem *item, float moveSpeed)
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{
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float frame = item->guideFrame - this->startLength;
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QPointF end((posX + radiusX + radiusX * cos(startAngleRad + (frame * stepAngleRad))) * scaleX,
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(posY + radiusY + radiusY * sin(startAngleRad + (frame * stepAngleRad))) * scaleY);
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this->move(item, end, moveSpeed);
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}
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