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**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** use the contact form at http://qt.digia.com/contact-us.
**
** 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
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****************************************************************************/
#ifndef QGLATTRIBUTESET_H
#define QGLATTRIBUTESET_H
#include <Qt3D/qt3dglobal.h>
#include <Qt3D/qglnamespace.h>
#include <QtCore/qlist.h>
QT_BEGIN_NAMESPACE
class Q_QT3D_EXPORT QGLAttributeSet
{
public:
QGLAttributeSet() : m_attrs(0) {}
bool isEmpty() const { return !m_attrs; }
void clear() { m_attrs = 0; }
bool contains(QGL::VertexAttribute attr) const;
void insert(QGL::VertexAttribute attr);
void remove(QGL::VertexAttribute attr);
QList<QGL::VertexAttribute> toList() const;
static QGLAttributeSet fromList(const QList<QGL::VertexAttribute> &list);
void unite(const QGLAttributeSet &other);
void intersect(const QGLAttributeSet &other);
void subtract(const QGLAttributeSet &other);
bool operator==(const QGLAttributeSet &other) const;
bool operator!=(const QGLAttributeSet &other) const;
private:
bool isValidAttr(QGL::VertexAttribute attr) const;
quint32 m_attrs;
};
inline bool QGLAttributeSet::isValidAttr(QGL::VertexAttribute attr) const
{
int a = int(attr);
return (a > -1 && a < 32);
}
inline bool QGLAttributeSet::contains(QGL::VertexAttribute attr) const
{
quint32 flag = quint32(attr);
return isValidAttr(attr) ? ((m_attrs & (((quint32)1) << flag)) != 0) : false;
}
inline void QGLAttributeSet::insert(QGL::VertexAttribute attr)
{
quint32 flag = quint32(attr);
if (isValidAttr(attr))
m_attrs |= (((quint32)1) << flag);
}
inline void QGLAttributeSet::remove(QGL::VertexAttribute attr)
{
quint32 flag = quint32(attr);
if (isValidAttr(attr))
m_attrs &= ~(((quint32)1) << flag);
}
inline void QGLAttributeSet::unite(const QGLAttributeSet &other)
{
m_attrs |= other.m_attrs;
}
inline void QGLAttributeSet::intersect(const QGLAttributeSet &other)
{
m_attrs &= other.m_attrs;
}
inline void QGLAttributeSet::subtract(const QGLAttributeSet &other)
{
m_attrs &= ~(other.m_attrs);
}
inline bool QGLAttributeSet::operator==(const QGLAttributeSet &other) const
{
return m_attrs == other.m_attrs;
}
inline bool QGLAttributeSet::operator!=(const QGLAttributeSet &other) const
{
return m_attrs != other.m_attrs;
}
QT_END_NAMESPACE
#endif
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