void XnVFlowRouter::OpenNewSession()
{
if (m_pActive == NULL)
{
return;
}
xnLogVerbose(XNV_NITE_MASK_CONNECT, "Router %s [0x%08x]: Connecting %s [0x%08x] as active",
GetListenerName(), this, m_pActive->GetListenerName(), m_pActive);
XnVMultipleHands newHands;
XnVMultipleHands* pLocalHands;
XnValue value;
m_pProperties->Get(FR_PROPERTY_HANDS, value);
pLocalHands = (XnVMultipleHands*)value;
// Create a Multiple Hands object with the same hands, indicating all of them are new
pLocalHands->Clone(newHands);
newHands.ClearLists();
for (XnVMultipleHands::Iterator iter = newHands.begin(); iter != newHands.end(); ++iter)
{
newHands.MarkActive((*iter)->nID);
newHands.MarkNew((*iter)->nID);
}
// Send an Activation Message
XnVActivationMessage activate(true);
m_pActive->BaseUpdate(&activate);
// Send the 'all-new' Point Message to to listener that's being activated
XnVPointMessage pointMessage(&newHands);
m_pActive->BaseUpdate(&pointMessage);
} // XnVFlowRouter::OpenNewSession
// Create a local copy of all the hands, and set a primary for the subtree.
void Update(const XnVMultipleHands& hands)
{
// Copy all the hands
hands.Clone(m_LocalCopy);
const XnVHandPointContext* pPrimary = hands.GetPrimaryContext();
if (pPrimary == NULL)
{
// There are no points at all.
return;
}
XnUInt32 nPrimary = pPrimary->nID;
if (hands.GetContext(m_nNewPrimary) == 0)
{
// The secondary point we considered primary for the subtree is no longer available.
m_nNewPrimary = 0;
}
// If we don't remember a secondary point as primary, or that secondary just became the primary for
// the entire tree, try to locate another secondary.
if (m_nNewPrimary == 0 || m_nNewPrimary == nPrimary)
{
// local primary unavailable
for (XnVMultipleHands::ConstIterator iter = hands.begin(); iter != hands.end(); ++iter)
{
if (iter.IsActive() && (*iter)->nID != nPrimary)
{
// Found a point that is active, but is not the primary. This will be the primary
// for the subtree
m_nNewPrimary = (*iter)->nID;
break;
}
}
}
// Adjust the hand list with our chosen primary for the subtree
m_LocalCopy.ReassignPrimary(m_nNewPrimary);
}
void XnVFlowRouter::CloseOldSession()
{
if (m_pActive == NULL)
{
return;
}
xnLogVerbose(XNV_NITE_MASK_CONNECT, "Router %s [0x%08x]: Disconnecting %s [0x%08x] as active",
GetListenerName(), this, m_pActive->GetListenerName(), m_pActive);
XnVMultipleHands oldHands;
XnVMultipleHands* pLocalHands;
XnValue value;
m_pProperties->Get(FR_PROPERTY_HANDS, value);
pLocalHands = (XnVMultipleHands*)value;
// Create a Multiple Hands object with the same hands, indicating all of them are old
pLocalHands->Clone(oldHands);
oldHands.ClearLists();
while (oldHands.begin() != oldHands.end())
{
oldHands.MarkOld((*oldHands.begin())->nID);
oldHands.Remove((*oldHands.begin())->nID);
}
m_pActive->ClearQueue();
// Send the 'all-old' Point Message to to listener that's being deactivated
XnVPointMessage pointMessage(&oldHands);
m_pActive->BaseUpdate(&pointMessage);
// Send a Deactivation Message
XnVActivationMessage deactivate(false);
m_pActive->BaseUpdate(&deactivate);
} // XnVFlowRouter::CloseOldSession
