qquick3dperspectivecamera.cpp

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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qquick3dperspectivecamera_p.h"
 
#include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h>
 
#include <QtMath>
#include <QtQuick3DUtils/private/qssgutils_p.h>
 
#include "qquick3dutils_p.h"
 
#include "qquick3dnode_p_p.h"
 
QT_BEGIN_NAMESPACE
 
QQuick3DPerspectiveCamera::QQuick3DPerspectiveCamera(QQuick3DNodePrivate &dd, QQuick3DNode *parent)
    : QQuick3DCamera(dd, parent)
{}
 
QQuick3DPerspectiveCamera::QQuick3DPerspectiveCamera(QQuick3DNode *parent)
    : QQuick3DPerspectiveCamera(*(new QQuick3DNodePrivate(QQuick3DNodePrivate::Type::PerspectiveCamera)), parent)
{}
 
float QQuick3DPerspectiveCamera::clipNear() const
{
    return m_clipNear;
}
 
float QQuick3DPerspectiveCamera::clipFar() const
{
    return m_clipFar;
}
 
float QQuick3DPerspectiveCamera::fieldOfView() const
{
    return m_fieldOfView;
}
 
QQuick3DPerspectiveCamera::FieldOfViewOrientation QQuick3DPerspectiveCamera::fieldOfViewOrientation() const
{
    return m_fieldOfViewOrientation;
}
 
void QQuick3DPerspectiveCamera::setClipNear(float clipNear)
{
    if (qFuzzyCompare(m_clipNear, clipNear))
        return;
 
    m_clipNear = clipNear;
    emit clipNearChanged();
    update();
}
 
void QQuick3DPerspectiveCamera::setClipFar(float clipFar)
{
    if (qFuzzyCompare(m_clipFar, clipFar))
        return;
 
    m_clipFar = clipFar;
    emit clipFarChanged();
    update();
}
 
void QQuick3DPerspectiveCamera::setFieldOfView(float fieldOfView)
{
    if (qFuzzyCompare(m_fieldOfView, fieldOfView))
        return;
 
    m_fieldOfView = fieldOfView;
    emit fieldOfViewChanged();
    update();
}
 
void QQuick3DPerspectiveCamera::setFieldOfViewOrientation(QQuick3DPerspectiveCamera::FieldOfViewOrientation
                                                          fieldOfViewOrientation)
{
    if (m_fieldOfViewOrientation == fieldOfViewOrientation)
        return;
 
    m_fieldOfViewOrientation = fieldOfViewOrientation;
    emit fieldOfViewOrientationChanged();
    update();
}
 
QSSGRenderGraphObject *QQuick3DPerspectiveCamera::updateSpatialNode(QSSGRenderGraphObject *node)
{
    QSSGRenderCamera *camera = static_cast<QSSGRenderCamera *>(QQuick3DCamera::updateSpatialNode(node));
    if (camera) {
        const bool changed = ((int(qUpdateIfNeeded(camera->clipNear, m_clipNear))
                               | int(qUpdateIfNeeded(camera->clipFar, m_clipFar))
                               | int(qUpdateIfNeeded(camera->fov, qDegreesToRadians(m_fieldOfView)))
                               | int(qUpdateIfNeeded(camera->fovHorizontal, m_fieldOfViewOrientation == QQuick3DPerspectiveCamera::FieldOfViewOrientation::Horizontal))) != 0);
        if (changed)
            camera->markDirty(QSSGRenderCamera::DirtyFlag::CameraDirty);
    }
 
    return camera;
}
 
QT_END_NAMESPACE