added admittance computation

[blast.git] / GroupInterface.cpp

diff --git a/GroupInterface.cpp b/GroupInterface.cpp
index 934ad08d693cc0805a4a8f0cb18706db4b28bb46..ecc6ba72ab6e9235ecc830ec16fa962ac8c1bc95 100644 (file)
--- a/GroupInterface.cpp
+++ b/GroupInterface.cpp
@@ -41,7 +41,8 @@ bool GroupInterface::canConnectTo(AbstractInterface *iface) {
 
   */
   if (iface->isReferenceInterface()) return false;
-  if (iface->getConnectedFrom() != NULL) return false;
+  ConnectedInterface* connIface = AI_TO_CON(iface);
+  if (connIface->getConnectedFrom() != NULL) return false;
 
   if (this->getOwner() == iface->getOwner()->getParent()) {
     if ((direction == Input) && (iface->getDirection() == Input)) return true;