Node.cpp

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#include "Node.h"
#include "Action.h"
 
#include "SceneGraph.h"
 
namespace dyno
{
Node::Node()
    : OBase()
    , m_node_name("default")
    , mDt(0.016f)
{
}
 
 
Node::~Node()
{
    mModuleList.clear();
 
    for (auto port : mExportNodes)
    {
        this->disconnect(port);
    }
 
    mImportNodes.clear();
    mExportNodes.clear();
}
 
void Node::setName(std::string name)
{
    m_node_name = name;
}
 
std::string Node::getName()
{
    return m_node_name;
}
 
std::string Node::getNodeType()
{
    return "Default";
}
 
bool Node::isAutoSync()
{
    return mAutoSync;
}
 
bool Node::isAutoHidden()
{
    return mAutoHidden;
}
 
void Node::setAutoSync(bool con)
{
    mAutoSync = con;
}
 
void Node::setAutoHidden(bool con)
{
    mAutoHidden = con;
}
 
bool Node::isActive()
{
    return mPhysicsEnabled;
}
 
void Node::setActive(bool active)
{
    mPhysicsEnabled = active;
}
 
bool Node::isVisible()
{
    return mRenderingEnabled;
}
 
void Node::setVisible(bool visible)
{
    mRenderingEnabled = visible;
}
 
float Node::getDt()
{
    return mDt;
}
 
void Node::setDt(Real dt)
{
    mDt = dt;
}
 
void Node::setSceneGraph(SceneGraph* scn)
{
    mSceneGraph = scn;
}
 
SceneGraph* Node::getSceneGraph()
{
    return mSceneGraph;
}
 
// Node* Node::addAncestor(Node* anc)
// {
//  if (hasAncestor(anc) || anc == nullptr)
//      return nullptr;
// 
//  anc->addDescendant(this);
// 
//  mAncestors.push_back(anc);
// 
//  if (mSceneGraph) {
//      mSceneGraph->markQueueUpdateRequired();
//  }
// 
//  return anc;
// }
// 
// bool Node::hasAncestor(Node* anc)
// {
//  auto it = find(mAncestors.begin(), mAncestors.end(), anc);
// 
//  return it == mAncestors.end() ? false : true;
// }
 
void Node::preUpdateStates()
{
 
}
 
void Node::updateStates()
{
    this->animationPipeline()->update();
}
 
void Node::update()
{
    if (!this->validateInputs()) {
        return;
    }
 
    if (this->requireUpdate())
    {
        this->preUpdateStates();
 
        if (mPhysicsEnabled)
            this->updateStates();
 
        this->postUpdateStates();
 
        this->updateTopology();
 
        //reset parameters
        for (auto param : fields_param)
        {
            param->tack();
        }
 
        //reset input fields
        for (auto f_in : fields_input)
        {
            f_in->tack();
        }
 
        //tag all output fields as modifed
        for (auto f_out : fields_output)
        {
            f_out->tick();
        }
    }
}
 
void Node::reset()
{
    if (this->validateInputs()) {
        this->stateElapsedTime()->setValue(0.0f);
        this->stateFrameNumber()->setValue(0);
 
        this->resetStates();
 
        //When the node is reset, call tick() to force updating all modules
        this->tick();
    }
}
 
NBoundingBox Node::boundingBox()
{
    return NBoundingBox();
}
 
void Node::postUpdateStates()
{
 
}
 
void Node::updateGraphicsContext()
{
    if (mRenderingEnabled)
    {
        this->graphicsPipeline()->update();
    }
}
 
void Node::resetStates()
{
    this->resetPipeline()->update();
}
 
bool Node::validateInputs()
{
    //If any input field is empty, return false;
    for(auto f_in : fields_input)
    {
        if (!f_in->isOptional() && f_in->isEmpty())
        {
            std::string errMsg = std::string("The field ") + f_in->getObjectName() +
                std::string(" in Node ") + this->getClassInfo()->getClassName() + std::string(" is not set!");
 
            Log::sendMessage(Log::Info, errMsg);
            return false;
        }
    }
 
    return true;
}
 
bool Node::requireUpdate()
{
    //TODO: improve the following rules
    if (mForceUpdate)
        return true;
 
    //check input fields
    bool modified = false;
 
    if (mImportNodes.size() > 0)
    {
        return true;
    }
     
 
    for (auto f_in : fields_input)
    {
        modified |= f_in->isModified();
    }
 
    //check control fields
    for (auto var : fields_param)
    {
        modified |= var->isModified();
    }
 
    return modified;
}
 
void Node::tick()
{
    std::vector<FBase*>& fields = this->getAllFields();
    for(FBase * var : fields)
    {
        if (var != nullptr) {
            if (var->getFieldType() == FieldTypeEnum::State || var->getFieldType() == FieldTypeEnum::Out)
            {
                var->tick();
            }
        }
    }
}
 
// std::shared_ptr<DeviceContext> Node::getContext()
// {
//  if (m_context == nullptr)
//  {
//      m_context = TypeInfo::New<DeviceContext>();
//      m_context->setParent(this);
//      addModule(m_context);
//  }
//  return m_context;
// }
// 
// void Node::setContext(std::shared_ptr<DeviceContext> context)
// {
//  if (m_context != nullptr)
//  {
//      deleteModule(m_context);
//  }
// 
//  m_context = context; 
//  addModule(m_context);
// }
 
std::shared_ptr<Pipeline> Node::resetPipeline()
{
    if (mResetPipeline == nullptr)
    {
        mResetPipeline = std::make_shared<AnimationPipeline>(this);
    }
    return mResetPipeline;
}
 
std::shared_ptr<AnimationPipeline> Node::animationPipeline()
{
    if (mAnimationPipeline == nullptr)
    {
        mAnimationPipeline = std::make_shared<AnimationPipeline>(this);
    }
    return mAnimationPipeline;
}
 
std::shared_ptr<GraphicsPipeline> Node::graphicsPipeline()
{
    if (mGraphicsPipeline == nullptr)
    {
        mGraphicsPipeline = std::make_shared<GraphicsPipeline>(this);
    }
    return mGraphicsPipeline;
}
 
/*
std::shared_ptr<MechanicalState> Node::getMechanicalState()
{
    if (m_mechanical_state == nullptr)
    {
        m_mechanical_state = TypeInfo::New<MechanicalState>();
        m_mechanical_state->setParent(this);
    }
    return m_mechanical_state;
}*/
/*
bool Node::addModule(std::string name, Module* module)
{
    if (getContext() == nullptr || module == NULL)
    {
        std::cout << "Context or module does not exist!" << std::endl;
        return false;
    }
 
    std::map<std::string, Module*>::iterator found = m_modules.find(name);
    if (found != m_modules.end())
    {
        std::cout << "Module name already exists!" << std::endl;
        return false;
    }
    else
    {
        m_modules[name] = module;
        m_module_list.push_back(module);
 
//      module->insertToNode(this);
    }
 
    return true;
}
*/
bool Node::addModule(std::shared_ptr<Module> module)
{
    bool ret = true;
    ret &= addToModuleList(module);
 
    return ret;
}
 
bool Node::deleteModule(std::shared_ptr<Module> module)
{
    bool ret = true;
 
    ret &= deleteFromModuleList(module);
        
    return ret;
}
 
// void Node::doTraverseBottomUp(Action* act)
// {
//  act->start(this);
//  auto iter = mAncestors.begin();
//  for (; iter != mAncestors.end(); iter++)
//  {
//      (*iter)->doTraverseBottomUp(act);
//  }
// 
//  act->process(this);
// 
//  act->end(this);
// }
// 
// void Node::doTraverseTopDown(Action* act)
// {
//  act->start(this);
//  act->process(this);
// 
//  auto iter = mAncestors.begin();
//  for (; iter != mAncestors.end(); iter++)
//  {
//      (*iter)->doTraverseTopDown(act);
//  }
// 
//  act->end(this);
// }
 
 
std::string FormatConnectionInfo(Node* node, NodePort* port, bool connecting, bool succeeded)
{
    Node* pOut = port != nullptr ? port->getParent() : nullptr;
 
    std::string capIn = node->caption();
    std::string capOut = pOut != nullptr ? pOut->caption() : "";
 
    std::string nameIn = node->getName();
    std::string nameOut = port != nullptr ? port->getPortName() : "";
 
    if (connecting)
    {
        std::string message1 = capIn + ":" + nameIn + " is connected to " + capOut + ":" + nameOut;
        std::string message2 = capIn + ":" + nameIn + " cannot be connected to " + capOut + ":" + nameOut;
        return succeeded ? message1 : message2;
    }
    else
    {
        std::string message1 = capIn + ":" + nameIn + " is disconnected from " + capOut + ":" + nameOut;
        std::string message2 = capIn + ":" + nameIn + " cannot be disconnected from " + capOut + ":" + nameOut;
        return succeeded ? message1 : message2;
    }
}
 
bool Node::appendExportNode(NodePort* nodePort)
{
    auto it = find(mExportNodes.begin(), mExportNodes.end(), nodePort);
    if (it != mExportNodes.end()) {
        Log::sendMessage(Log::Info, FormatConnectionInfo(this, nodePort, true, false));
        return false;
    }
 
    mExportNodes.push_back(nodePort);
 
    //Always show the last node
    if (mAutoHidden)
        this->setVisible(false);
 
    Log::sendMessage(Log::Info, FormatConnectionInfo(this, nodePort, true, true));
    return nodePort->addNode(this);
}
 
bool Node::removeExportNode(NodePort* nodePort)
{
    //TODO: this is a hack, otherwise the app will crash
    if (mExportNodes.size() == 0) {
        return false;
    }
 
    auto it = find(mExportNodes.begin(), mExportNodes.end(), nodePort);
    if (it == mExportNodes.end()) {
        Log::sendMessage(Log::Info, FormatConnectionInfo(this, nodePort, false, false));
        return false;
    }
 
    mExportNodes.erase(it);
 
    //Recover the visibility
    if (mAutoHidden)
        this->setVisible(true);
 
    Log::sendMessage(Log::Info, FormatConnectionInfo(this, nodePort, false, true));
    return nodePort->removeNode(this);
}
 
void Node::updateTopology()
{
 
}
 
bool Node::connect(NodePort* nPort)
{
    nPort->notify();
 
    return this->appendExportNode(nPort);
}
 
bool Node::disconnect(NodePort* nPort)
{
    return this->removeExportNode(nPort);
}
 
bool Node::attachField(FBase* field, std::string name, std::string desc, bool autoDestroy /*= true*/)
{
    field->setParent(this);
    field->setObjectName(name);
    field->setDescription(desc);
    field->setAutoDestroy(autoDestroy);
 
    bool ret = false;
    
    auto fType = field->getFieldType();
    switch (field->getFieldType())
    {
    case FieldTypeEnum::State:
        ret = this->addField(field);
        break;
 
    case FieldTypeEnum::Param:
        ret = addParameter(field);
        break;
 
    case FieldTypeEnum::In:
        ret = addInputField(field);
        break;
 
    case FieldTypeEnum::Out:
        ret = addOutputField(field);
        break;
 
    default:
        break;
    }
    
 
    if (!ret)
    {
        Log::sendMessage(Log::Error, std::string("The field ") + name + std::string(" already exists!"));
    }
    return ret;
}
 
uint Node::sizeOfImportNodes() const
{
    uint n = 0;
    for(auto port : mImportNodes)
    {
        n += port->getNodes().size();
    }
 
    return n;
}
 
void Node::setForceUpdate(bool b)
{
    mForceUpdate = b;
}
 
// Node* Node::addDescendant(Node* descent)
// {
//  if (hasDescendant(descent) || descent == nullptr)
//      return descent;
// 
//  mDescendants.push_back(descent);
//  return descent;
// }
// 
// bool Node::hasDescendant(Node* descent)
// {
//  auto it = std::find(mDescendants.begin(), mDescendants.end(), descent);
//  return it == mDescendants.end() ? false : true;
// }
// 
// void Node::removeDescendant(Node* descent)
// {
//  auto iter = mDescendants.begin();
//  for (; iter != mDescendants.end(); )
//  {
//      if (*iter == descent)
//      {
//          mDescendants.erase(iter++);
//      }
//      else
//      {
//          ++iter;
//      }
//  }
// }
 
bool Node::addNodePort(NodePort* port)
{
    mImportNodes.push_back(port);
 
    return true;
}
 
// void Node::setAsCurrentContext()
// {
//  getContext()->enable();
// }
 
// void Node::setTopologyModule(std::shared_ptr<TopologyModule> topology)
// {
//  if (m_topology != nullptr)
//  {
//      deleteModule(m_topology);
//  }
//  m_topology = topology;
//  addModule(topology);
// }
// 
// void Node::setNumericalModel(std::shared_ptr<NumericalModel> numerical)
// {
//  if (m_numerical_model != nullptr)
//  {
//      deleteModule(m_numerical_model);
//  }
//  m_numerical_model = numerical;
//  addModule(numerical);
// }
// 
// void Node::setCollidableObject(std::shared_ptr<CollidableObject> collidable)
// {
//  if (m_collidable_object != nullptr)
//  {
//      deleteModule(m_collidable_object);
//  }
//  m_collidable_object = collidable;
//  addModule(collidable);
// }
 
std::shared_ptr<Module> Node::getModule(std::string name)
{
    std::shared_ptr<Module> base = nullptr;
    std::list<std::shared_ptr<Module>>::iterator iter;
    for (iter = mModuleList.begin(); iter != mModuleList.end(); iter++)
    {
        if ((*iter)->getName() == name)
        {
            base = *iter;
            break;
        }
    }
    return base;
}
 
bool Node::hasModule(std::string name)
{
    if (getModule(name) == nullptr)
        return false;
 
    return true;
}
 
/*Module* Node::getModule(std::string name)
{
    std::map<std::string, Module*>::iterator result = m_modules.find(name);
    if (result == m_modules.end())
    {
        return NULL;
    }
 
    return result->second;
}*/
 
 
bool Node::addToModuleList(std::shared_ptr<Module> module)
{
    auto found = std::find(mModuleList.begin(), mModuleList.end(), module);
    if (found == mModuleList.end())
    {
        mModuleList.push_back(module);
        module->setParentNode(this);
        return true;
    }
 
    return false;
}
 
bool Node::deleteFromModuleList(std::shared_ptr<Module> module)
{
    auto found = std::find(mModuleList.begin(), mModuleList.end(), module);
    if (found != mModuleList.end())
    {
        mModuleList.erase(found);
        return true;
    }
 
    return true;
}
 
}