qquick3dspotlight.cpp

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qquick3dspotlight_p.h"
#include "qquick3dobject_p.h"
 
#include <QtQuick3DRuntimeRender/private/qssgrenderlight_p.h>
 
#include "qquick3dnode_p_p.h"
 
QT_BEGIN_NAMESPACE
 
QQuick3DSpotLight::QQuick3DSpotLight(QQuick3DNode *parent)
    : QQuick3DAbstractLight(*(new QQuick3DNodePrivate(QQuick3DNodePrivate::Type::SpotLight)), parent) {}
 
float QQuick3DSpotLight::constantFade() const
{
    return m_constantFade;
}
 
float QQuick3DSpotLight::linearFade() const
{
    return m_linearFade;
}
 
float QQuick3DSpotLight::quadraticFade() const
{
    return m_quadraticFade;
}
 
float QQuick3DSpotLight::coneAngle() const
{
    return m_coneAngle;
}
 
float QQuick3DSpotLight::innerConeAngle() const
{
    return m_innerConeAngle;
}
 
void QQuick3DSpotLight::setConstantFade(float constantFade)
{
    if (qFuzzyCompare(m_constantFade, constantFade))
        return;
 
    m_constantFade = constantFade;
    m_dirtyFlags.setFlag(DirtyFlag::FadeDirty);
    emit constantFadeChanged();
    update();
}
 
void QQuick3DSpotLight::setLinearFade(float linearFade)
{
    if (qFuzzyCompare(m_linearFade, linearFade))
        return;
 
    m_linearFade = linearFade;
    m_dirtyFlags.setFlag(DirtyFlag::FadeDirty);
    emit linearFadeChanged();
    update();
}
 
void QQuick3DSpotLight::setQuadraticFade(float quadraticFade)
{
    if (qFuzzyCompare(m_quadraticFade, quadraticFade))
        return;
 
    m_quadraticFade = quadraticFade;
    m_dirtyFlags.setFlag(DirtyFlag::FadeDirty);
    emit quadraticFadeChanged();
    update();
}
 
void QQuick3DSpotLight::setConeAngle(float coneAngle)
{
    if (coneAngle < 0.f)
        coneAngle = 0.f;
    else if (coneAngle > 180.f)
        coneAngle = 180.f;
 
    if (qFuzzyCompare(m_coneAngle, coneAngle))
        return;
 
    m_coneAngle = coneAngle;
    m_dirtyFlags.setFlag(DirtyFlag::AreaDirty);
    emit coneAngleChanged();
    update();
}
 
void QQuick3DSpotLight::setInnerConeAngle(float innerConeAngle)
{
    if (innerConeAngle < 0.f)
        innerConeAngle = 0.f;
    else if (innerConeAngle > 180.f)
        innerConeAngle = 180.f;
 
    if (qFuzzyCompare(m_innerConeAngle, innerConeAngle))
        return;
 
    m_innerConeAngle = innerConeAngle;
    m_dirtyFlags.setFlag(DirtyFlag::AreaDirty);
    emit innerConeAngleChanged();
    update();
}
 
QSSGRenderGraphObject *QQuick3DSpotLight::updateSpatialNode(QSSGRenderGraphObject *node)
{
    if (!node) {
        markAllDirty();
        node = new QSSGRenderLight(QSSGRenderLight::Type::SpotLight);
    }
 
    QQuick3DAbstractLight::updateSpatialNode(node); // Marks the light node dirty if m_dirtyFlags != 0
 
    QSSGRenderLight *light = static_cast<QSSGRenderLight *>(node);
 
    if (m_dirtyFlags.testFlag(DirtyFlag::FadeDirty)) {
        m_dirtyFlags.setFlag(DirtyFlag::FadeDirty, false);
        light->m_constantFade = m_constantFade;
        light->m_linearFade = m_linearFade;
        light->m_quadraticFade = m_quadraticFade;
    }
 
    if (m_dirtyFlags.testFlag(DirtyFlag::AreaDirty)) {
        m_dirtyFlags.setFlag(DirtyFlag::AreaDirty, false);
        light->m_coneAngle = qBound(0.0f, m_coneAngle * 0.5, 90.0f);
        light->m_innerConeAngle = qBound(0.0f, m_innerConeAngle * 0.5, 90.0f);
    }
 
    return node;
}
 
QT_END_NAMESPACE