/* * Encog(tm) Core v3.4 - Java Version * http://www.heatonresearch.com/encog/ * https://github.com/encog/encog-java-core * Copyright 2008-2016 Heaton Research, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * For more information on Heaton Research copyrights, licenses * and trademarks visit: * http://www.heatonresearch.com/copyright */ package org.encog.ml.graph.search; import org.encog.EncogError; import org.encog.ml.graph.BasicNode; import org.encog.ml.graph.EuclideanNode; public class EuclideanCostEstimator implements CostEstimator { @Override public double estimateCost(BasicNode startingNode, SearchGoal goal) { if( !(startingNode instanceof EuclideanNode) ) { throw new EncogError("Starting node must be EuclideanNode."); } if( !(goal instanceof SimpleDestinationGoal) ) { throw new EncogError("Goal must be SimpleDistanceGoal."); } SimpleDestinationGoal sdg = (SimpleDestinationGoal)goal; EuclideanNode endingNode = (EuclideanNode)sdg.getGoalDestination(); return EuclideanNode.distance( (EuclideanNode)startingNode, endingNode); } }