C++ EntityItemPointer::getPosition方法代码示例

void OverlayPanel::applyTransformTo(Transform& transform, bool force) {
    if (force || usecTimestampNow() > _transformExpiry) {
        PanelAttachable::applyTransformTo(transform, true);
        if (!getParentPanel()) {
            if (_anchorPositionBindMyAvatar) {
                transform.setTranslation(DependencyManager::get<AvatarManager>()->getMyAvatar()
                                         ->getPosition());
            } else if (!_anchorPositionBindEntity.isNull()) {
                EntityTreePointer entityTree = DependencyManager::get<EntityScriptingInterface>()->getEntityTree();
                entityTree->withReadLock([&] {
                    EntityItemPointer foundEntity = entityTree->findEntityByID(_anchorPositionBindEntity);
                    if (foundEntity) {
                        transform.setTranslation(foundEntity->getPosition());
                    }
                });
            } else {
                transform.setTranslation(getAnchorPosition());
            }

            if (_anchorRotationBindMyAvatar) {
                transform.setRotation(DependencyManager::get<AvatarManager>()->getMyAvatar()
                                      ->getOrientation());
            } else if (!_anchorRotationBindEntity.isNull()) {
                EntityTreePointer entityTree = DependencyManager::get<EntityScriptingInterface>()->getEntityTree();
                entityTree->withReadLock([&] {
                    EntityItemPointer foundEntity = entityTree->findEntityByID(_anchorRotationBindEntity);
                    if (foundEntity) {
                        transform.setRotation(foundEntity->getRotation());
                    }
                });
            } else {
                transform.setRotation(getAnchorRotation());
            }

            transform.setScale(getAnchorScale());

            transform.postTranslate(getOffsetPosition());
            transform.postRotate(getOffsetRotation());
            transform.postScale(getOffsetScale());
        }
        pointTransformAtCamera(transform, getOffsetRotation());
    }
}

QUuid EntityScriptingInterface::editEntity(QUuid id, const EntityItemProperties& scriptSideProperties) {
    EntityItemProperties properties = scriptSideProperties;

    auto dimensions = properties.getDimensions();
    float volume = dimensions.x * dimensions.y * dimensions.z;
    auto density = properties.getDensity();
    auto newVelocity = properties.getVelocity().length();
    float oldVelocity = { 0.0f };

    EntityItemID entityID(id);
    if (!_entityTree) {
        queueEntityMessage(PacketType::EntityEdit, entityID, properties);

        //if there is no local entity entity tree, no existing velocity, use 0.
        float cost = calculateCost(density * volume, oldVelocity, newVelocity);
        cost *= costMultiplier;

        if (cost > _currentAvatarEnergy) {
            return QUuid();
        } else {
            //debit the avatar energy and continue
            emit debitEnergySource(cost);
        }

        return id;
    }
    // If we have a local entity tree set, then also update it.

    bool updatedEntity = false;
    _entityTree->withWriteLock([&] {
        if (scriptSideProperties.parentRelatedPropertyChanged()) {
            // All of parentID, parentJointIndex, position, rotation are needed to make sense of any of them.
            // If any of these changed, pull any missing properties from the entity.
            EntityItemPointer entity = _entityTree->findEntityByEntityItemID(entityID);
            if (!entity) {
                return;
            }
            //existing entity, retrieve old velocity for check down below
            oldVelocity = entity->getVelocity().length();

            if (!scriptSideProperties.parentIDChanged()) {
                properties.setParentID(entity->getParentID());
            }
            if (!scriptSideProperties.parentJointIndexChanged()) {
                properties.setParentJointIndex(entity->getParentJointIndex());
            }
            if (!scriptSideProperties.localPositionChanged() && !scriptSideProperties.positionChanged()) {
                properties.setPosition(entity->getPosition());
            }
            if (!scriptSideProperties.localRotationChanged() && !scriptSideProperties.rotationChanged()) {
                properties.setRotation(entity->getOrientation());
            }
        }
        properties = convertLocationFromScriptSemantics(properties);

        float cost = calculateCost(density * volume, oldVelocity, newVelocity);
        cost *= costMultiplier;

        if (cost > _currentAvatarEnergy) {
            updatedEntity = false;
        } else {
            //debit the avatar energy and continue
            updatedEntity = _entityTree->updateEntity(entityID, properties);
            if (updatedEntity) {
                emit debitEnergySource(cost);
            }
        }
    });

    if (!updatedEntity) {
        return QUuid();
    }

    _entityTree->withReadLock([&] {
        EntityItemPointer entity = _entityTree->findEntityByEntityItemID(entityID);
        if (entity) {
            // make sure the properties has a type, so that the encode can know which properties to include
            properties.setType(entity->getType());
            bool hasTerseUpdateChanges = properties.hasTerseUpdateChanges();
            bool hasPhysicsChanges = properties.hasMiscPhysicsChanges() || hasTerseUpdateChanges;
            if (_bidOnSimulationOwnership && hasPhysicsChanges) {
                auto nodeList = DependencyManager::get<NodeList>();
                const QUuid myNodeID = nodeList->getSessionUUID();

                if (entity->getSimulatorID() == myNodeID) {
                    // we think we already own the simulation, so make sure to send ALL TerseUpdate properties
                    if (hasTerseUpdateChanges) {
                        entity->getAllTerseUpdateProperties(properties);
                    }
                    // TODO: if we knew that ONLY TerseUpdate properties have changed in properties AND the object
                    // is dynamic AND it is active in the physics simulation then we could chose to NOT queue an update
                    // and instead let the physics simulation decide when to send a terse update.  This would remove
                    // the "slide-no-rotate" glitch (and typical double-update) that we see during the "poke rolling
                    // balls" test.  However, even if we solve this problem we still need to provide a "slerp the visible
                    // proxy toward the true physical position" feature to hide the final glitches in the remote watcher's
                    // simulation.

                    if (entity->getSimulationPriority() < SCRIPT_POKE_SIMULATION_PRIORITY) {
                        // we re-assert our simulation ownership at a higher priority
                        properties.setSimulationOwner(myNodeID, SCRIPT_POKE_SIMULATION_PRIORITY);
//.........这里部分代码省略.........