qabstractphysicsnode.cpp

Go to the documentation of this file.

// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qabstractphysicsnode_p.h"
#include <QtQuick3D/private/qquick3dobject_p.h>
#include <foundation/PxTransform.h>
 
#include "qphysicsworld_p.h"
QT_BEGIN_NAMESPACE
 
QAbstractPhysicsNode::QAbstractPhysicsNode()
{
    QPhysicsWorld::registerNode(this);
}
 
QAbstractPhysicsNode::~QAbstractPhysicsNode()
{
    for (auto shape : std::as_const(m_collisionShapes))
        shape->disconnect(this);
    QPhysicsWorld::deregisterNode(this);
}
 
QQmlListProperty<QAbstractCollisionShape> QAbstractPhysicsNode::collisionShapes()
{
    return QQmlListProperty<QAbstractCollisionShape>(
            this, nullptr, QAbstractPhysicsNode::qmlAppendShape,
            QAbstractPhysicsNode::qmlShapeCount, QAbstractPhysicsNode::qmlShapeAt,
            QAbstractPhysicsNode::qmlClearShapes);
}
 
const QVector<QAbstractCollisionShape *> &QAbstractPhysicsNode::getCollisionShapesList() const
{
    return m_collisionShapes;
}
 
void QAbstractPhysicsNode::updateFromPhysicsTransform(const physx::PxTransform &transform)
{
    const auto pos = transform.p;
    const auto rotation = transform.q;
    const auto qtPosition = QVector3D(pos.x, pos.y, pos.z);
    const auto qtRotation = QQuaternion(rotation.w, rotation.x, rotation.y, rotation.z);
 
    // Get this nodes parent transform
    const QQuick3DNode *parentNode = static_cast<QQuick3DNode *>(parentItem());
 
    if (!parentNode) {
        // then it is the same space
        setRotation(qtRotation);
        setPosition(qtPosition);
    } else {
        setPosition(parentNode->mapPositionFromScene(qtPosition));
        const auto relativeRotation = parentNode->sceneRotation().inverted() * qtRotation;
        setRotation(relativeRotation);
    }
}
 
bool QAbstractPhysicsNode::sendContactReports() const
{
    return m_sendContactReports;
}
 
void QAbstractPhysicsNode::setSendContactReports(bool sendContactReports)
{
    if (m_sendContactReports == sendContactReports)
        return;
 
    m_sendContactReports = sendContactReports;
    emit sendContactReportsChanged(m_sendContactReports);
}
 
bool QAbstractPhysicsNode::receiveContactReports() const
{
    return m_receiveContactReports;
}
 
void QAbstractPhysicsNode::setReceiveContactReports(bool receiveContactReports)
{
    if (m_receiveContactReports == receiveContactReports)
        return;
 
    m_receiveContactReports = receiveContactReports;
    emit receiveContactReportsChanged(m_receiveContactReports);
}
 
bool QAbstractPhysicsNode::sendTriggerReports() const
{
    return m_sendTriggerReports;
}
 
void QAbstractPhysicsNode::setSendTriggerReports(bool sendTriggerReports)
{
    if (m_sendTriggerReports == sendTriggerReports)
        return;
 
    m_sendTriggerReports = sendTriggerReports;
    emit sendTriggerReportsChanged(m_sendTriggerReports);
}
 
bool QAbstractPhysicsNode::receiveTriggerReports() const
{
    return m_receiveTriggerReports;
}
 
void QAbstractPhysicsNode::setReceiveTriggerReports(bool receiveTriggerReports)
{
    if (m_receiveTriggerReports == receiveTriggerReports)
        return;
 
    m_receiveTriggerReports = receiveTriggerReports;
    emit receiveTriggerReportsChanged(m_receiveTriggerReports);
}
 
void QAbstractPhysicsNode::registerContact(QAbstractPhysicsNode *body,
                                           const QVector<QVector3D> &positions,
                                           const QVector<QVector3D> &impulses,
                                           const QVector<QVector3D> &normals)
{
    emit bodyContact(body, positions, impulses, normals);
}
 
void QAbstractPhysicsNode::onShapeDestroyed(QObject *object)
{
    m_collisionShapes.removeAll(static_cast<QAbstractCollisionShape *>(object));
}
 
void QAbstractPhysicsNode::onShapeNeedsRebuild(QObject * /*object*/)
{
    m_shapesDirty = true;
}
 
void QAbstractPhysicsNode::qmlAppendShape(QQmlListProperty<QAbstractCollisionShape> *list,
                                          QAbstractCollisionShape *shape)
{
    if (shape == nullptr)
        return;
    QAbstractPhysicsNode *self = static_cast<QAbstractPhysicsNode *>(list->object);
    self->m_collisionShapes.push_back(shape);
    self->m_hasStaticShapes = self->m_hasStaticShapes || shape->isStaticShape();
 
    if (shape->parentItem() == nullptr) {
        // If the material has no parent, check if it has a hierarchical parent that's a
        // QQuick3DObject and re-parent it to that, e.g., inline materials
        QQuick3DObject *parentItem = qobject_cast<QQuick3DObject *>(shape->parent());
        if (parentItem) {
            shape->setParentItem(parentItem);
        } else { // If no valid parent was found, make sure the material refs our scene manager
            const auto &scenManager = QQuick3DObjectPrivate::get(self)->sceneManager;
            if (scenManager)
                QQuick3DObjectPrivate::refSceneManager(shape, *scenManager);
            // else: If there's no scene manager, defer until one is set, see itemChange()
        }
    }
 
    // Make sure materials are removed when destroyed
    connect(shape, &QAbstractCollisionShape::destroyed, self,
            &QAbstractPhysicsNode::onShapeDestroyed);
 
    // Connect to rebuild signal
    connect(shape, &QAbstractCollisionShape::needsRebuild, self,
            &QAbstractPhysicsNode::onShapeNeedsRebuild);
}
 
QAbstractCollisionShape *
QAbstractPhysicsNode::qmlShapeAt(QQmlListProperty<QAbstractCollisionShape> *list, qsizetype index)
{
    QAbstractPhysicsNode *self = static_cast<QAbstractPhysicsNode *>(list->object);
    return self->m_collisionShapes.at(index);
}
 
qsizetype QAbstractPhysicsNode::qmlShapeCount(QQmlListProperty<QAbstractCollisionShape> *list)
{
    QAbstractPhysicsNode *self = static_cast<QAbstractPhysicsNode *>(list->object);
    return self->m_collisionShapes.count();
}
 
void QAbstractPhysicsNode::qmlClearShapes(QQmlListProperty<QAbstractCollisionShape> *list)
{
    QAbstractPhysicsNode *self = static_cast<QAbstractPhysicsNode *>(list->object);
    for (const auto &shape : std::as_const(self->m_collisionShapes)) {
        if (shape->parentItem() == nullptr)
            QQuick3DObjectPrivate::get(shape)->derefSceneManager();
    }
    self->m_hasStaticShapes = false;
    for (auto shape : std::as_const(self->m_collisionShapes))
        shape->disconnect(self);
    self->m_collisionShapes.clear();
}
 
QT_END_NAMESPACE