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+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** 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
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** 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
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qattribute.h"
+#include "qattribute_p.h"
+#include <QVector3D>
+#include <QVector2D>
+#include <QVector>
+#include <Qt3DCore/qabstractbuffer.h>
+#include "renderlogging.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3D {
+
+AttributePrivate::AttributePrivate(Attribute *qq)
+ : QAbstractAttributePrivate(qq)
+{
+}
+
+Attribute::Attribute(QAbstractBufferPtr buf, int type, int count, int offset, int stride)
+ : QAbstractAttribute(*new AttributePrivate(this), buf, type, count, offset, stride)
+{
+}
+
+Attribute::Attribute(AttributePrivate &dd, QAbstractBufferPtr buf, int type, int count, int offset, int stride)
+ : QAbstractAttribute(dd, buf, type, count, offset, stride)
+{
+}
+
+QVector<QVector3D> Attribute::asVector3D() const
+{
+ Q_D(const Attribute);
+ const QByteArray buffer = d->m_buffer->data();
+ const char *rawBuffer = buffer.constData();
+ rawBuffer += d->m_offset;
+ const float* fptr;
+ int stride;
+
+ switch (type()) {
+ case GL_FLOAT_VEC2:
+ stride = sizeof(float) * 2; break;
+
+ case GL_FLOAT_VEC3:
+ stride = sizeof(float) * 3; break;
+
+ case GL_FLOAT_VEC4:
+ stride = sizeof(float) * 4; break;
+
+ default:
+ qCDebug(Render::Io) << Q_FUNC_INFO << "can't convert" << QString::number(type(), 16) << "to QVector3D";
+ return QVector<QVector3D>();
+ }
+
+ if (d->m_stride != 0)
+ stride = d->m_stride;
+ QVector<QVector3D> result;
+ result.resize(d->m_count);
+
+ for (uint c=0; c < d->m_count; ++c) {
+ QVector3D v;
+ fptr = reinterpret_cast<const float*>(rawBuffer);
+
+ switch (type()) {
+ case GL_FLOAT_VEC2:
+ v.setX(fptr[0]);
+ v.setY(fptr[1]);
+ v.setZ(0.0f);
+ break;
+
+ case GL_FLOAT_VEC3:
+ case GL_FLOAT_VEC4:
+ v.setX(fptr[0]);
+ v.setY(fptr[1]);
+ v.setZ(fptr[2]);
+ break;
+
+ default:
+ break; // should never happen, we check types above
+ }
+
+ result[c] = v;
+ rawBuffer += stride;
+ }
+
+ return result;
+}
+
+QVector<QVector2D> Attribute::asVector2D() const
+{
+ Q_D(const Attribute);
+ char* rawBuffer = d->m_buffer->data().data();
+ rawBuffer += d->m_offset;
+ float* fptr;
+ int stride;
+
+ switch (type()) {
+ case GL_FLOAT_VEC2:
+ stride = sizeof(float) * 2; break;
+
+ case GL_FLOAT_VEC3:
+ stride = sizeof(float) * 3; break;
+
+ case GL_FLOAT_VEC4:
+ stride = sizeof(float) * 4; break;
+
+ default:
+ qCDebug(Render::Io) << Q_FUNC_INFO << "can't convert" << QString::number(type(), 16) << "to QVector2D";
+ return QVector<QVector2D>();
+ }
+
+ if (d->m_stride != 0)
+ stride = d->m_stride;
+
+ QVector<QVector2D> result;
+ result.resize(d->m_count);
+
+ for (uint c=0; c < d->m_count; ++c) {
+ QVector2D v;
+ fptr = reinterpret_cast<float*>(rawBuffer);
+ v.setX(fptr[0]);
+ v.setY(fptr[1]);
+ result[c] = v;
+ rawBuffer += stride;
+ }
+
+ return result;
+}
+
+void Attribute::dump(int count)
+{
+ Q_D(const Attribute);
+ char* rawBuffer = d->m_buffer->data().data();
+ rawBuffer += d->m_offset;
+
+ float* fptr;
+ quint16* usptr;
+
+ int stride = d->m_stride;
+
+ for (int c=0; c<count; ++c) {
+ switch (type()) {
+ case GL_UNSIGNED_SHORT:
+ if (!stride) stride = sizeof(quint16);
+ usptr = reinterpret_cast<quint16*>(rawBuffer);
+ qCDebug(Render::Io) << c << ":u16:" << usptr[0];
+ break;
+ case GL_UNSIGNED_INT:
+ if (!stride) stride = sizeof(quint32);
+ qCDebug(Render::Io) << c << ":u32:" << reinterpret_cast<quint32*>(rawBuffer)[0];
+ break;
+ case GL_FLOAT_VEC2:
+ if (!stride) stride = sizeof(float) * 2;
+ fptr = reinterpret_cast<float*>(rawBuffer);
+ qCDebug(Render::Io) << c << ":vec2:"<< fptr[0] << fptr[0];
+ break;
+
+ case GL_FLOAT_VEC3:
+ if (!stride) stride = sizeof(float) * 3;
+ fptr = reinterpret_cast<float*>(rawBuffer);
+ qCDebug(Render::Io) << c << ":vec3:" << fptr[0] << fptr[0] << fptr[2];
+ break;
+
+ default: qCDebug(Render::Io) << Q_FUNC_INFO << "unspported type:" << QString::number(type(), 16);
+ }
+ }
+}
+
+} // Qt3D
+
+QT_END_NAMESPACE
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