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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtQuick3D 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 "qglcube.h"
#include "qglbuilder.h"
#include "qvector3darray.h"
QT_BEGIN_NAMESPACE
/*!
\class QGLCube
\brief The QGLCube class represents the geometry of simple six-sided cube in 3D space.
\since 4.8
\ingroup qt3d
\ingroup qt3d::geometry
The following example adds a cube of 2 units on a side to a
geometry builder, and draws it at (10, 25, 0) in a QGLPainter:
\code
QGLBuilder list;
list.newSection(QGL::Faceted);
list << QGLCube(2);
painter->translate(10, 25, 0);
list.draw(painter);
\endcode
QGLCube will create a default set of texture coordinates that shows
the same texture of all six faces.
*/
/*!
\fn QGLCube::QGLCube(qreal size)
Constructs the geometry for a regular cube of \a size
units on a side.
*/
/*!
\fn qreal QGLCube::size() const
Returns the size of this cube.
\sa setSize()
*/
/*!
\fn void QGLCube::setSize(qreal size)
Sets the \a size of this cube.
\sa size()
*/
static const int vertexDataLen = 6 * 4 * 3;
static const float vertexData[vertexDataLen] = {
// +X
0.5f, 0.5f, -0.5f,
0.5f, 0.5f, 0.5f,
0.5f, -0.5f, 0.5f,
0.5f, -0.5f, -0.5f,
// -X
-0.5f, -0.5f, -0.5f,
-0.5f, -0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, -0.5f,
// +Y
-0.5f, 0.5f, -0.5f,
-0.5f, 0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
0.5f, 0.5f, -0.5f,
// -Y
0.5f, -0.5f, -0.5f,
0.5f, -0.5f, 0.5f,
-0.5f, -0.5f, 0.5f,
-0.5f, -0.5f, -0.5f,
// +Z
0.5f, -0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, -0.5f, 0.5f,
// -Z
0.5f, 0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
-0.5f, -0.5f, -0.5f,
-0.5f, 0.5f, -0.5f
};
static const int texCoordDataLen = 6 * 4 * 2;
static const float texCoordData[texCoordDataLen] = {
// +X
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
// -X
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
// +Y
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
// -Y
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
// +Z
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
// -Z
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
};
/*!
\relates QGLCube
Builds the geometry for \a cube within the specified
geometry \a builder.
This operator specifies the positions, and 2D texture
co-ordinates for all of the vertices that make up the cube.
Normals will be calculated by the \a builder, depending on its
current section's smoothing setting.
*/
QGLBuilder& operator<<(QGLBuilder& builder, const QGLCube& cube)
{
QGeometryData op;
QVector3DArray vrts = QVector3DArray::fromRawData(
reinterpret_cast<const QVector3D *>(vertexData), vertexDataLen / 3);
if (cube.size() != 1.0f)
vrts.scale(cube.size());
op.appendVertexArray(vrts);
QVector2DArray texx = QVector2DArray::fromRawData(
reinterpret_cast<const QVector2D *>(texCoordData), texCoordDataLen / 2);
op.appendTexCoordArray(texx);
builder.addQuads(op);
return builder;
}
QT_END_NAMESPACE
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