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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "tessellatedquadmesh.h"
#include <Qt3DRender/qattribute.h>
#include <Qt3DRender/qbuffer.h>
#include <Qt3DRender/qgeometry.h>
class TessellatedGeometry : public Qt3DRender::QGeometry
{
Q_OBJECT
public:
TessellatedGeometry(Qt3DCore::QNode *parent = Q_NULLPTR)
: Qt3DRender::QGeometry(parent)
, m_positionAttribute(new Qt3DRender::QAttribute(this))
, m_vertexBuffer(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, this))
{
const float positionData[] = {
-0.8f, -0.8f, 0.0f,
0.8f, -0.8f, 0.0f,
0.8f, 0.8f, 0.0f,
-0.8f, 0.8f, 0.0f
};
const int nVerts = 4;
const int size = nVerts * 3 * sizeof(float);
QByteArray positionBytes;
positionBytes.resize(size);
memcpy(positionBytes.data(), positionData, size);
m_vertexBuffer->setData(positionBytes);
m_positionAttribute->setName(Qt3DRender::QAttribute::defaultPositionAttributeName());
m_positionAttribute->setDataType(Qt3DRender::QAttribute::Float);
m_positionAttribute->setDataSize(3);
m_positionAttribute->setCount(nVerts);
m_positionAttribute->setByteStride(3 * sizeof(float));
m_positionAttribute->setBuffer(m_vertexBuffer);
setVerticesPerPatch(4);
addAttribute(m_positionAttribute);
}
private:
Qt3DRender::QAttribute *m_positionAttribute;
Qt3DRender::QBuffer *m_vertexBuffer;
};
TessellatedQuadMesh::TessellatedQuadMesh(Qt3DCore::QNode *parent)
: Qt3DRender::QGeometryRenderer(parent)
{
setPrimitiveType(Qt3DRender::QGeometryRenderer::Patches);
setGeometry(new TessellatedGeometry(this));
}
TessellatedQuadMesh::~TessellatedQuadMesh()
{
QNode::cleanup();
}
#include "tessellatedquadmesh.moc"
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