qtrianglemeshshape.cpp

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qtrianglemeshshape_p.h"
 
#include <QtQuick3D/QQuick3DGeometry>
#include <extensions/PxExtensionsAPI.h>
 
#include "qphysicsmeshutils_p_p.h"
 
//########################################################################################
// NOTE:
// Triangle mesh, heightfield or plane geometry shapes configured as eSIMULATION_SHAPE are
// not supported for non-kinematic PxRigidDynamic instances.
//########################################################################################
 
QT_BEGIN_NAMESPACE
 
QTriangleMeshShape::QTriangleMeshShape() = default;
 
QTriangleMeshShape::~QTriangleMeshShape()
{
    delete m_meshGeometry;
    if (m_mesh)
        QQuick3DPhysicsMeshManager::releaseMesh(m_mesh);
}
 
physx::PxGeometry *QTriangleMeshShape::getPhysXGeometry()
{
    if (m_dirtyPhysx || m_scaleDirty) {
        updatePhysXGeometry();
    }
    return m_meshGeometry;
}
 
void QTriangleMeshShape::updatePhysXGeometry()
{
    delete m_meshGeometry;
    m_meshGeometry = nullptr;
 
    if (!m_mesh)
        return;
    auto *triangleMesh = m_mesh->triangleMesh();
    if (!triangleMesh)
        return;
 
    auto meshScale = sceneScale();
    physx::PxMeshScale scale(physx::PxVec3(meshScale.x(), meshScale.y(), meshScale.z()),
                             physx::PxQuat(physx::PxIdentity));
 
    m_meshGeometry = new physx::PxTriangleMeshGeometry(triangleMesh, scale);
    m_dirtyPhysx = false;
}
 
const QUrl &QTriangleMeshShape::source() const
{
    return m_meshSource;
}
 
void QTriangleMeshShape::setSource(const QUrl &newSource)
{
    if (m_meshSource == newSource)
        return;
    m_meshSource = newSource;
    m_mesh = QQuick3DPhysicsMeshManager::getMesh(m_meshSource, this);
 
    updatePhysXGeometry();
 
    emit needsRebuild(this);
    emit sourceChanged();
}
 
QT_END_NAMESPACE