if(!value_node || !scalar)
throw runtime_error(strprintf("ValueNode_Scale: %s",_("One or both of my parameters aren't set!")));
else if(get_type()==ValueBase::TYPE_ANGLE)
if(!value_node || !scalar)
throw runtime_error(strprintf("ValueNode_Scale: %s",_("One or both of my parameters aren't set!")));
else if(get_type()==ValueBase::TYPE_ANGLE)