Detailed Description

The ForceOperator forces a signal value.

A ForceOperator forces default input value. It sets output value to ForceValue if ForceActive is true; otherwise it sets output value to input value.

Arguments

When operator is used inside a signal its default input is automatically tied to signal's InternalValue or previous operator's output. Its default output is automatically tied to next operator's input or to signal's Value. See also CDP Operator Usage In CDP Signals.

Actual Processing Code of the ForceOperator

unsigned int ForceOperator<T>::Process()
{
  if (!d->forceValue || !d->forceActive)
  {
    if(Status()!=STATUS_ERROR)
      if (auto parent = GetParent())
        parent->RunInComponentThread([=](){ parent->UpdateStatus(GetNodeID(), STATUS_ERROR); });
    return STATUS_ERROR;
  }
  if(!static_cast<bool>(*(d->forceActive)))
  {
    // input and output are the same actually.
    this->m_output = static_cast<T>(this->m_input);
    if(Status()!=STATUS_OK)
      if (auto parent = GetParent())
        parent->RunInComponentThread([=](){ parent->RemoveStatus(GetNodeID()); });
    return STATUS_OK;
  }
  else
  {
    this->m_output = static_cast<T>(*(d->forceValue));
    if(Status()!=STATUS_VALUE_FORCED)
      if (auto parent = GetParent())
        parent->RunInComponentThread([=](){ parent->UpdateStatus(GetNodeID(), STATUS_VALUE_FORCED); });
    return STATUS_VALUE_FORCED;
  }
}