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// Copyright (C) 2019 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qdepthrange.h"
#include "qdepthrange_p.h"
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
/*!
\class Qt3DRender::QDepthRange
\inmodule Qt3DRender
\since 5.14
\ingroup renderstates
\brief Enables remapping depth values written into the depth buffer.
By default, OpenGL writes scene depth information into the depth buffer in
the range [0.0, 1.0] with 0.0 corresponding to the near clip plane and 1.0 to
the far clip plane. QDepthRange allows mapping these values into a different
range so parts of the scene are always rendered in front of or behind other
parts. Valid values for near and far are between 0 and 1.
*/
/*!
\qmltype DepthRange
\nativetype Qt3DRender::QDepthRange
\inherits RenderState
\inqmlmodule Qt3D.Render
\ingroup renderstates
\since 5.14
\brief Enables remapping depth values written into the depth buffer.
By default, OpenGL writes scene depth information into the depth buffer in
the range [0.0, 1.0] corresponding to the near and far clip planes.
QDepthRange allows mapping these values into a different range. For example
setting the range [0.0, 0.5] will map the rendered scene into the depth
buffer such that objects at the near clip plane have depth value of 0.0 and
objects at the far clip plane have a depth value of 0.5. This allows
rendering parts of the scene always in front of or behind other parts.
*/
/*!
\qmlproperty real QDepthRange::nearValue
The depth buffer value corresponding to the near clip plane. Valid values for are
between 0 and 1.
*/
/*!
\qmlproperty real QDepthRange::farValue
The depth buffer value corresponding to the far clip plane. Valid values for are
between 0 and 1.
*/
/*!
\property Qt3DRender::QDepthRange::nearValue
The depth buffer value corresponding to the near clip plane. Valid values for are
between 0 and 1.
*/
/*!
\property Qt3DRender::QDepthRange::farValue
The depth buffer value corresponding to the far clip plane. Valid values for are
between 0 and 1.
*/
QDepthRange::QDepthRange(QNode *parent)
: QRenderState(*new QDepthRangePrivate(), parent)
{
}
/*! \internal */
QDepthRange::~QDepthRange()
{
}
double QDepthRange::nearValue() const
{
Q_D(const QDepthRange);
return d->m_nearValue;
}
double QDepthRange::farValue() const
{
Q_D(const QDepthRange);
return d->m_farValue;
}
void QDepthRange::setNearValue(double value)
{
Q_D(QDepthRange);
if (value != d->m_nearValue) {
d->m_nearValue = value;
Q_EMIT nearValueChanged(value);
}
}
void QDepthRange::setFarValue(double value)
{
Q_D(QDepthRange);
if (value != d->m_farValue) {
d->m_farValue = value;
Q_EMIT farValueChanged(value);
}
}
} // namespace Qt3DRender
QT_END_NAMESPACE
#include "moc_qdepthrange.cpp"
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