diff options
author | Matthew Vogt <matthew.vogt@nokia.com> | 2012-04-11 16:54:33 +1000 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2012-04-16 01:25:54 +0200 |
commit | f189b8934dc405cbd45258abc5aba2713428b1cc (patch) | |
tree | dd3d4f61c7337343705faf7a603585c287b8ae50 /src/quick/particles/qquicktargetdirection.cpp | |
parent | e00c40a89a1172add896e86e805a7cd42a4ea0c5 (diff) |
Extract Particles code to an independent library
QtQuick clients that do not use particles features should not have
to load these classes.
Task-number: QTBUG-25178
Change-Id: Ib15f7655dc4d821595e06f9160d2770375279027
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>
Diffstat (limited to 'src/quick/particles/qquicktargetdirection.cpp')
-rw-r--r-- | src/quick/particles/qquicktargetdirection.cpp | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/src/quick/particles/qquicktargetdirection.cpp b/src/quick/particles/qquicktargetdirection.cpp deleted file mode 100644 index 695684dfde..0000000000 --- a/src/quick/particles/qquicktargetdirection.cpp +++ /dev/null @@ -1,131 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtQuick module 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 "qquicktargetdirection_p.h" -#include "qquickparticleemitter_p.h" -#include <cmath> -#include <QDebug> - -QT_BEGIN_NAMESPACE -/*! - \qmlclass TargetDirection QQuickTargetDirection - \inqmlmodule QtQuick.Particles 2 - \inherits Direction - \brief The TargetDirection element allows you to specify a direction towards the target point - -*/ -/*! - \qmlproperty real QtQuick.Particles2::TargetDirection::targetX -*/ -/*! - \qmlproperty real QtQuick.Particles2::TargetDirection::targetY -*/ -/*! - \qmlproperty Item QtQuick.Particles2::TargetDirection::targetItem - If specified, this will take precedence over targetX and targetY. - The targeted point will be the center of the specified Item -*/ -/*! - \qmlproperty real QtQuick.Particles2::TargetDirection::targetVariation -*/ -/*! - \qmlproperty real QtQuick.Particles2::TargetDirection::magnitude -*/ -/*! - \qmlproperty real QtQuick.Particles2::TargetDirection::magnitudeVariation -*/ -/*! - \qmlproperty bool QtQuick.Particles2::TargetDirection::proportionalMagnitude - - If true, then the value of magnitude and magnitudeVariation shall be interpreted as multiples - of the distance between the source point and the target point, per second. - - If false(default), then the value of magnitude and magnitudeVariation shall be interpreted as - pixels per second. -*/ - -QQuickTargetDirection::QQuickTargetDirection(QObject *parent) : - QQuickDirection(parent) - , m_targetX(0) - , m_targetY(0) - , m_targetVariation(0) - , m_proportionalMagnitude(false) - , m_magnitude(0) - , m_magnitudeVariation(0) - , m_targetItem(0) -{ -} - -const QPointF QQuickTargetDirection::sample(const QPointF &from) -{ - //###This approach loses interpolating the last position of the target (like we could with the emitter) is it worthwhile? - QPointF ret; - qreal targetX; - qreal targetY; - if (m_targetItem){ - QQuickParticleEmitter* parentEmitter = qobject_cast<QQuickParticleEmitter*>(parent()); - targetX = m_targetItem->width()/2; - targetY = m_targetItem->height()/2; - if (!parentEmitter){ - qWarning() << "Directed vector is not a child of the emitter. Mapping of target item coordinates may fail."; - targetX += m_targetItem->x(); - targetY += m_targetItem->y(); - }else{ - ret = parentEmitter->mapFromItem(m_targetItem, QPointF(targetX, targetY)); - targetX = ret.x(); - targetY = ret.y(); - } - }else{ - targetX = m_targetX; - targetY = m_targetY; - } - targetX += 0 - from.x() - m_targetVariation + rand()/(float)RAND_MAX * m_targetVariation*2; - targetY += 0 - from.y() - m_targetVariation + rand()/(float)RAND_MAX * m_targetVariation*2; - qreal theta = atan2(targetY, targetX); - qreal mag = m_magnitude + rand()/(float)RAND_MAX * m_magnitudeVariation * 2 - m_magnitudeVariation; - if (m_proportionalMagnitude) - mag *= sqrt(targetX * targetX + targetY * targetY); - ret.setX(mag * cos(theta)); - ret.setY(mag * sin(theta)); - return ret; -} - -QT_END_NAMESPACE |