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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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** accordance with the commercial license agreement provided with the
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** 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
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** GNU General Public License Usage
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****************************************************************************/
#ifndef QGLATTRIBUTEVALUE_H
#define QGLATTRIBUTEVALUE_H
#include <Qt3D/qglattributedescription.h>
#include <Qt3D/qcustomdataarray.h>
QT_BEGIN_NAMESPACE
class QGLVertexBundle;
class Q_QT3D_EXPORT QGLAttributeValue
{
public:
QGLAttributeValue();
QGLAttributeValue(const QArray<float>& array);
QGLAttributeValue(const QArray<QVector2D>& array);
QGLAttributeValue(const QArray<QVector3D>& array);
QGLAttributeValue(const QArray<QVector4D>& array);
QGLAttributeValue(const QArray<QColor4ub>& array);
QGLAttributeValue(const QCustomDataArray& array);
QGLAttributeValue(int tupleSize, GLenum type, int stride, const void *data, int count = 0);
QGLAttributeValue(int tupleSize, GLenum type, int stride, int offset, int count = 0);
QGLAttributeValue(const QGLAttributeDescription& description, const void *data, int count = 0);
QGLAttributeValue(const QGLAttributeDescription& description, int offset, int count = 0);
bool isNull() const;
QGLAttributeDescription description(QGL::VertexAttribute attribute) const;
GLenum type() const;
int sizeOfType() const;
int tupleSize() const;
int stride() const;
const void *data() const;
int count() const;
private:
int m_tupleSize;
GLenum m_type;
int m_stride;
const void *m_data;
int m_count;
void setStride(int stride_) { m_stride = stride_; }
void setOffset(int offset)
{ m_data = reinterpret_cast<const void *>(offset); }
friend class QGLVertexBundle;
};
inline QGLAttributeValue::QGLAttributeValue()
: m_tupleSize(0), m_type(GL_FLOAT), m_stride(0), m_data(0), m_count(0)
{
}
inline QGLAttributeValue::QGLAttributeValue(const QArray<float>& array)
: m_tupleSize(1), m_type(GL_FLOAT), m_stride(0)
, m_data(array.constData()), m_count(array.count())
{
}
inline QGLAttributeValue::QGLAttributeValue(const QArray<QVector2D>& array)
: m_tupleSize(2), m_type(GL_FLOAT), m_stride(0)
, m_data(array.constData()), m_count(array.count())
{
}
inline QGLAttributeValue::QGLAttributeValue(const QArray<QVector3D>& array)
: m_tupleSize(3), m_type(GL_FLOAT), m_stride(0)
, m_data(array.constData()), m_count(array.count())
{
}
inline QGLAttributeValue::QGLAttributeValue(const QArray<QVector4D>& array)
: m_tupleSize(4), m_type(GL_FLOAT), m_stride(0)
, m_data(array.constData()), m_count(array.count())
{
}
inline QGLAttributeValue::QGLAttributeValue(const QArray<QColor4ub>& array)
: m_tupleSize(4), m_type(GL_UNSIGNED_BYTE), m_stride(0)
, m_data(array.constData()), m_count(array.count())
{
}
inline QGLAttributeValue::QGLAttributeValue
(int tupleSize_, GLenum type_, int stride_, const void *data_, int count_)
: m_tupleSize(tupleSize_), m_type(type_), m_stride(stride_)
, m_data(data_), m_count(count_)
{
Q_ASSERT(tupleSize_ >= 1 && tupleSize_ <= 4);
}
inline QGLAttributeValue::QGLAttributeValue
(int tupleSize_, GLenum type_, int stride_, int offset_, int count_)
: m_tupleSize(tupleSize_), m_type(type_), m_stride(stride_)
, m_data(reinterpret_cast<const void *>(offset_)), m_count(count_)
{
Q_ASSERT(tupleSize_ >= 1 && tupleSize_ <= 4);
}
inline QGLAttributeValue::QGLAttributeValue
(const QGLAttributeDescription& description_, const void *data_, int count_)
: m_tupleSize(description_.tupleSize()), m_type(description_.type())
, m_stride(description_.stride()), m_data(data_), m_count(count_)
{
}
inline QGLAttributeValue::QGLAttributeValue
(const QGLAttributeDescription& description_, int offset_, int count_)
: m_tupleSize(description_.tupleSize()), m_type(description_.type())
, m_stride(description_.stride())
, m_data(reinterpret_cast<const void *>(offset_))
, m_count(count_)
{
}
inline bool QGLAttributeValue::isNull() const
{
return m_tupleSize == 0;
}
inline QGLAttributeDescription QGLAttributeValue::description(QGL::VertexAttribute attribute) const
{
if (!isNull()) {
return QGLAttributeDescription(attribute, m_tupleSize, m_type, m_stride);
} else {
QGLAttributeDescription desc;
desc.setAttribute(attribute);
return desc;
}
}
inline GLenum QGLAttributeValue::type() const
{
return m_type;
}
inline int QGLAttributeValue::tupleSize() const
{
return m_tupleSize;
}
inline int QGLAttributeValue::stride() const
{
return m_stride;
}
inline const void *QGLAttributeValue::data() const
{
return m_data;
}
inline int QGLAttributeValue::count() const
{
return m_count;
}
QT_END_NAMESPACE
#endif
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