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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: https://www.qt.io/licensing/
**
** 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 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcullface.h"
#include "qcullface_p.h"
#include <Qt3DRender/private/qrenderstatecreatedchange_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
/*!
\class Qt3DRender::QCullFace
\brief The QCullFace class specifies whether front or back face culling
is enabled.
\since 5.7
\inmodule Qt3DRender
\ingroup renderstates
QCullFace sets whether the front or back facets are culled.
Facets include triangles, quadrilaterals, polygons and rectangles.
It can be added by calling the addRenderState() method on a QRenderPass:
\code
// using namespace Qt3DRender;
QRenderPass *renderPass = new QRenderPass();
// Create a front face culling render state
QCullFace *cullFront = new QCullFace();
cullFront->setMode(QCullFace::Front);
// Add the render state to the render pass
renderPass->addRenderState(cullFront);
\endcode
Or by calling the addRenderState() method on a QRenderStateSet:
\code
// using namespace Qt3DRender;
QRenderStateSet *renderStateSet = new QRenderStateSet();
// Create a front face culling render state
QCullFace *cullFront = new QCullFace();
cullFront->setMode(QCullFace::Front);
// Add the render state to the render pass
renderStateSet->addRenderState(cullFront);
\endcode
\sa QFrontFace
*/
/*!
\qmltype CullFace
\brief The CullFace type specifies whether front or back face culling
is enabled.
\since 5.7
\inqmlmodule Qt3D.Render
\instantiates Qt3DRender::QCullFace
\inherits RenderState
\ingroup renderstates
CullFace sets whether the front or back facets are culled.
Facets include triangles, quadrilaterals, polygons and rectangles.
It can be added to the renderStates property of a RenderPass:
\qml
RenderPass {
shaderProgram: ShaderProgram {
// ...
}
renderStates: [
CullFace {
mode: CullFace.Front
}
]
}
\endqml
Or added to the renderStates property of a RenderStateSet:
\qml
RenderStateSet {
renderStates: [
CullFace {
mode: CullFace.Front
}
]
}
\endqml
\sa FrontFace
*/
/*!
\enum Qt3DRender::QCullFace::CullingMode
This enumeration specifies values for the culling mode.
\value NoCulling Culling is disabled
\value Front Culling is enabled for front facing polygons
\value Back Culling is enabled for back facing polygons
\value FrontAndBack Culling is enabled for all polygons, points and lines are drawn
*/
/*!
\qmlproperty enumeration CullFace::mode
Holds the culling mode used by CullFace. Default is set to QCullFace.Back.
\list
\li CullFace.NoCulling - culling is disabled
\li CullFace.Front - culling is enabled for front facing polygons
\li CullFace.Back - culling is enabled for back facing polygons
\li CullFace.FrontAndBack - culling is enabled for all polygons, but points and lines are drawn
\endlist
*/
/*!
\property QCullFace::mode
Holds the culling mode used by QCullFace. Default is set to QCullFace.Back.
*/
/*!
Constructs a new QCullFace::QCullFace instance with \a parent as parent.
*/
QCullFace::QCullFace(QNode *parent)
: QRenderState(*new QCullFacePrivate, parent)
{
}
/*! \internal */
QCullFace::~QCullFace()
{
}
QCullFace::CullingMode QCullFace::mode() const
{
Q_D(const QCullFace);
return d->m_mode;
}
void QCullFace::setMode(QCullFace::CullingMode mode)
{
Q_D(QCullFace);
if (d->m_mode != mode) {
d->m_mode = mode;
emit modeChanged(mode);
}
}
Qt3DCore::QNodeCreatedChangeBasePtr QCullFace::createNodeCreationChange() const
{
auto creationChange = QRenderStateCreatedChangePtr<QCullFaceData>::create(this);
auto &data = creationChange->data;
Q_D(const QCullFace);
data.mode = d->m_mode;
return creationChange;
}
} // namespace Qt3DRender
QT_END_NAMESPACE
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