| /******************************************************************************* | |
| * This file is part of openWNS (open Wireless Network Simulator) | |
| * _____________________________________________________________________________ | |
| * | |
| * Copyright (C) 2004-2009 | |
| * Chair of Communication Networks (ComNets) | |
| * Kopernikusstr. 5, D-52074 Aachen, Germany | |
| * phone: ++49-241-80-27910, | |
| * fax: ++49-241-80-22242 | |
| * email: info@openwns.org | |
| * www: http://www.openwns.org | |
| * _____________________________________________________________________________ | |
| * | |
| * openWNS is free software; you can redistribute it and/or modify it under the | |
| * terms of the GNU Lesser General Public License version 2 as published by the | |
| * Free Software Foundation; | |
| * | |
| * openWNS is distributed in the hope that it will be useful, but WITHOUT ANY | |
| * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR | |
| * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more | |
| * details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public License | |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| * | |
| ******************************************************************************/ | |
| using namespace wns::scheduler; | |
| using namespace wns::scheduler::grouper; | |
| STATIC_FACTORY_REGISTER_WITH_CREATOR(DoAHeuristicPreferredAngle, GroupingProviderInterface, "DoAHeuristicPreferredAngle", wns::PyConfigViewCreator); | |
| DoAHeuristicPreferredAngle::DoAHeuristicPreferredAngle(const wns::pyconfig::View& config) | |
| : DoATreeBasedGrouper(config), | |
| minAngle(config.get<float>("minAngleDegree")*M_PI/180.0), | |
| weight(config.get<float>("weight")) | |
| { | |
| } | |
| float | |
| DoAHeuristicPreferredAngle::groupingCostForAUser(UserSet group, UserID newUser) { | |
| float cost = 0.0; | |
| float threshold = minAngle; | |
| // float threshold = 20.0 / 180.0 * M_PI; | |
| float penalty = 1000.0; | |
| float min = M_PI; | |
| float newUserDoA = getNormalizedDoA(newUser); | |
| // if (Debug) | |
| // std::cout << "New user at " << rad2deg(newUserDoA) << " degrees\n"; | |
| for (UserSet::const_iterator iter = group.begin(); | |
| iter != group.end(); ++iter) { | |
| float userDoA = getNormalizedDoA(*iter); | |
| // if (Debug) | |
| // std::cout << "Group user at " << rad2deg(userDoA) << " degrees\n"; | |
| float diff = userDoA - newUserDoA; | |
| // normalize angles to [0.0, M_PI] | |
| if (diff < 0.0) | |
| diff = diff + 2*M_PI; | |
| if (diff > M_PI) | |
| diff = 2*M_PI - diff; | |
| if (fabs(diff) < min) | |
| min = fabs(diff); | |
| } | |
| // if (Debug) | |
| // std::cout << "Minimum " << rad2deg(min) << " degrees\n"; | |
| // calculate cost to add user | |
| if (min < threshold) | |
| cost = penalty; | |
| else | |
| { | |
| // 0..threshold verboten | |
| // threshold .. 2.5X threshold erwuenscht mit minimalen kosten bei 2x | |
| // threshold. von 2.5x threshold bis 180 konstanter langsam wachsender | |
| // wert auf 1+mincost | |
| float minCost = threshold / M_PI; | |
| if (min < 2.5*threshold) | |
| cost = weight*(fabs(min-2*threshold)/threshold+minCost); | |
| else | |
| // fange bei 2.5*th mit 0.5+minCost an, dann steiger dich auf | |
| // 1+minCost bei M_PI | |
| cost = weight*((min-2.5*threshold)*(0.5/(M_PI-2.5*threshold)) +0.5+minCost ); | |
| } | |
| // if (Debug) | |
| // std::cout << "Resulting in cost of " << cost << " \n\n"; | |
| return cost; | |
| } | |