2024-06-15 14:48:28 +00:00
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package graph;
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2024-07-03 17:41:46 +00:00
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import OurApplication.OurLogElement;
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import logging.LogElementList;
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2024-07-02 22:46:21 +00:00
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import visualizationElements.Edge;
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import visualizationElements.EdgeStyle;
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import visualizationElements.Vertex;
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2024-07-06 18:37:42 +00:00
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import java.awt.Color;
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2024-06-25 15:18:34 +00:00
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import java.util.HashMap;
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2024-06-15 14:48:28 +00:00
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import java.util.Objects;
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2024-06-25 15:18:34 +00:00
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import java.util.PriorityQueue;
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2024-06-15 14:48:28 +00:00
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import java.util.Vector;
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2024-06-15 19:55:30 +00:00
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public class DirectedGraph<T extends VertexMarking, U extends EdgeMarking> extends Graph<T, U> {
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2024-07-02 22:46:21 +00:00
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// ATTRIBUTE
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private visualizationElements.Graph screenGraph;
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2024-07-03 17:41:46 +00:00
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private LogElementList<OurLogElement> logList;
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2024-07-02 22:46:21 +00:00
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2024-06-15 19:55:30 +00:00
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// KONSTRUKTOREN
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2024-06-15 14:48:28 +00:00
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public DirectedGraph() {
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super();
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2024-07-02 22:46:21 +00:00
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this.screenGraph = new visualizationElements.Graph(new Vector<Vertex>(), new Vector<Edge>(), true, EdgeStyle.Direct);
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2024-07-03 17:41:46 +00:00
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this.logList = new LogElementList<OurLogElement>();
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2024-06-26 00:20:36 +00:00
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}
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2024-06-15 14:48:28 +00:00
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public DirectedGraph(String s) {
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super(s);
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2024-07-02 22:46:21 +00:00
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this.screenGraph = new visualizationElements.Graph(new Vector<Vertex>(), new Vector<Edge>(), true, EdgeStyle.Direct);
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2024-07-03 17:41:46 +00:00
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this.logList = new LogElementList<OurLogElement>();
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2024-07-02 22:46:21 +00:00
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}
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// GET-ER
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public visualizationElements.Graph getScreenGraph() {
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return this.screenGraph;
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}
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2024-07-04 19:18:57 +00:00
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public visualizationElements.Graph getScreenGraphCopy() {
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visualizationElements.Graph graphCopy = new visualizationElements.Graph(new Vector<Vertex>(), new Vector<Edge>(), true, EdgeStyle.Direct);
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Vector<visualizationElements.Vertex> copiedVertexes = new Vector<>();
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Vector<visualizationElements.Edge> copiedEdges = new Vector<>();
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for (visualizationElements.Vertex vertexCopy : this.screenGraph.getVertexes()) {
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visualizationElements.Vertex newCopiedVertex = new visualizationElements.Vertex(vertexCopy.getXpos(), vertexCopy.getYpos(), vertexCopy.getMarking(), vertexCopy.getColor());
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copiedVertexes.add(newCopiedVertex);
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graphCopy.setVertexes(copiedVertexes);
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}
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for (visualizationElements.Edge edgeCopy : this.screenGraph.getEdges()) {
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visualizationElements.Edge newCopiedEdge = new visualizationElements.Edge(edgeCopy.getSource(), edgeCopy.getDestination(), edgeCopy.getMarking(), edgeCopy.getColor());
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copiedEdges.add(newCopiedEdge);
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graphCopy.setEdges(copiedEdges);
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}
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return graphCopy;
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}
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2024-07-02 22:46:21 +00:00
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2024-07-03 17:41:46 +00:00
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public LogElementList<OurLogElement> getLogList() {
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return this.logList;
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}
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2024-07-02 22:46:21 +00:00
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// HINZUFÜGEN
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// Kante hinzufügen
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public void addEdge(MarkedEdge<U> e) {
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super.addEdge(e);
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this.screenGraph.getEdges().add(e.getScreenEdge());
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}
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// Knoten hinzufügen
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public void addVertex(MarkedVertex<T> n) {
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super.addVertex(n);
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this.screenGraph.getVertexes().add(n.getScreenVertex());
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}
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// LÖSCHEN
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// Kante löschen
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public void removeEdge(MarkedEdge<U> e) {
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super.removeEdge(e);
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this.screenGraph.getEdges().remove(e.getScreenEdge());
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}
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// Knoten löschen
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public void removeVertex(MarkedVertex<T> n) {
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super.removeVertex(n);
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this.screenGraph.getVertexes().remove(n.getScreenVertex());
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2024-06-15 14:48:28 +00:00
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}
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2024-06-15 19:55:30 +00:00
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// KNOTEN EIGENSCHAFTEN
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2024-06-15 14:48:28 +00:00
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2024-06-15 19:55:30 +00:00
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// Prüfung, ob zwei Knoten stark adjazent sind
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2024-06-15 14:48:28 +00:00
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public boolean areStrongAdjacent(MarkedVertex<T> n1, MarkedVertex<T> n2) {
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boolean n1ton2 = false;
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boolean n2ton1 = false;
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2024-06-25 15:18:34 +00:00
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for (MarkedEdge<U> i: this.getAllEdges()) {
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if (i.getSource() == n1 && i.getDestination() == n2) {
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n1ton2 = true;
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} else if (i.getSource() == n2 && i.getDestination() == n1) {
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n2ton1 = true;
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}
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}
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return (n1ton2 && n2ton1);
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}
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public boolean areStrongAdjacent(String s1, String s2) throws NameDoesNotExistException {
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MarkedVertex<T> n1 = null;
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MarkedVertex<T> n2 = null;
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for (MarkedVertex<T> i: this.getAllVertexes()) {
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if (Objects.equals(i.getName(), s1)) {
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n1 = i;
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} else if (Objects.equals(i.getName(), s2)) {
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n2 = i;
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}
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}
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if (n1 == null || n2 == null) {
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throw new NameDoesNotExistException("One of the Vertexes might not exist");
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} else {
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return areStrongAdjacent(n1, n2);
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}
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}
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2024-06-15 19:55:30 +00:00
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// Prüfung des Eingangsgrades eines Knotens
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2024-06-15 14:48:28 +00:00
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public int inDegree(MarkedVertex<T> n) {
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int degree = 0;
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2024-06-25 15:18:34 +00:00
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for (MarkedEdge<U> i: this.getAllEdges()) {
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2024-06-15 14:48:28 +00:00
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if (i.getDestination() == n) {
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degree += 1;
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}
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}
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return degree;
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}
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public int inDegree(String s) throws NameDoesNotExistException{
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for (MarkedVertex<T> i: this.getAllVertexes()) {
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if (Objects.equals(i.getName(), s)) {
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return inDegree(i);
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}
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}
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throw new NameDoesNotExistException("One of the Vertexes might not exist");
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}
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2024-06-15 19:55:30 +00:00
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// Prüfung des Ausgangsgrades eines Knotens
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2024-06-15 14:48:28 +00:00
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public int outDegree(MarkedVertex<T> n) {
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int degree = 0;
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2024-06-25 15:18:34 +00:00
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for (MarkedEdge<U> i: this.getAllEdges()) {
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2024-06-15 14:48:28 +00:00
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if (i.getSource() == n) {
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degree += 1;
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}
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}
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return degree;
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}
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public int outDegree(String s) throws NameDoesNotExistException{
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for (MarkedVertex<T> i: this.getAllVertexes()) {
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if (Objects.equals(i.getName(), s)) {
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return outDegree(i);
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}
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}
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throw new NameDoesNotExistException("One of the Vertexes might not exist");
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}
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2024-06-15 19:55:30 +00:00
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// Prüfung, welche Knoten Vorgänger sind
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2024-06-15 14:48:28 +00:00
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public Vector<MarkedVertex<T>> getPredecessors(MarkedVertex<T> n) {
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2024-06-15 19:55:30 +00:00
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Vector<MarkedVertex<T>> predecessors = new Vector<>();
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2024-06-25 15:18:34 +00:00
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for (MarkedEdge<U> i: this.getAllEdges()) {
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2024-06-15 19:55:30 +00:00
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if (i.getDestination() == n) {
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2024-06-25 15:18:34 +00:00
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predecessors.add((MarkedVertex<T>) i.getSource());
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2024-06-15 19:55:30 +00:00
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}
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}
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return predecessors;
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2024-06-15 14:48:28 +00:00
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}
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2024-06-15 19:55:30 +00:00
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// Prüfung, welche Knoten Nachfolger sind
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2024-06-15 14:48:28 +00:00
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public Vector<MarkedVertex<T>> getSuccessors(MarkedVertex<T> n) {
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2024-06-15 19:55:30 +00:00
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Vector<MarkedVertex<T>> successors = new Vector<>();
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2024-06-25 15:18:34 +00:00
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for (MarkedEdge<U> i: this.getAllEdges()) {
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2024-06-15 19:55:30 +00:00
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if (i.getSource() == n) {
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2024-06-25 15:18:34 +00:00
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successors.add((MarkedVertex<T>) i.getDestination());
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2024-06-15 19:55:30 +00:00
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}
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}
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return successors;
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2024-06-15 14:48:28 +00:00
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}
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2024-06-25 15:18:34 +00:00
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// AUFGABE 2
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// Dijkstra-Algorithmus
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public int getShortestPathDijkstra(MarkedVertex<T> n1, MarkedVertex<T> n2) {
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2024-06-26 00:20:36 +00:00
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2024-06-25 15:18:34 +00:00
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// Erstellt Hashmap um Distanz von Startnoten zu jedem Knoten auf dem Graph zu tracken
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// Erstellt Hashmap um zu tracken welche Knoten schon besucht wurden
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// Initialisierung aller Distanzen auf UNENDLICH (= -1)
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// Initialisierung, dass kein Knoten besucht wurde
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HashMap<MarkedVertex<T>, Integer> distance = new HashMap<>();
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HashMap<MarkedVertex<T>, Boolean> visited = new HashMap<>();
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for (MarkedVertex<T> i: this.getAllVertexes()) {
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distance.put(i, -1);
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visited.put(i, false);
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}
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2024-06-26 00:20:36 +00:00
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2024-06-25 15:18:34 +00:00
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// Erstelle Schlange wo die nächsten Verbindungen drin sind
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PriorityQueue<WrapperElement<T>> queue = new PriorityQueue<>(new WrapperComparator<T>());
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// Distanz zu Startknoten auf 0
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// Weg zu Startknoten in die Schlange aufnehmen
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distance.put(n1, 0);
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queue.add(new WrapperElement<>(n1, 0));
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2024-06-26 00:20:36 +00:00
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// Variable, die Distanz zwischen aktuellem Knoten und Nachfolger speichert
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int dist = 0;
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2024-07-03 17:41:46 +00:00
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// Zähler für LogList
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int step = 0;
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2024-07-07 12:02:19 +00:00
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// String für den Description Inhalt
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String textDescription;
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2024-06-26 00:20:36 +00:00
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2024-07-05 12:00:35 +00:00
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// Färben der Start und Ziel Knoten für Visualisierung + hinzufügen zur LogList
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n1.getScreenVertex().setColor(Color.RED);
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n2.getScreenVertex().setColor(Color.RED);
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2024-07-07 12:02:19 +00:00
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textDescription = "Startknoten: " + n1.getScreenVertex().getMarking()
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+ ", Endknoten: " + n2.getScreenVertex().getMarking();
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this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
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2024-07-05 12:00:35 +00:00
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2024-06-25 15:18:34 +00:00
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while (!queue.isEmpty()) {
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// Den nächsten Knoten, der am wenigsten kostet, besuchen
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WrapperElement<T> nextVertex = queue.poll();
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2024-06-26 00:20:36 +00:00
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// Knoten als besucht makieren
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2024-06-25 15:18:34 +00:00
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visited.put(nextVertex.getElement(), true);
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2024-07-02 22:46:21 +00:00
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// Logging
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2024-07-07 12:02:19 +00:00
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textDescription = "Visit " + nextVertex.getElement().getName();
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System.out.println(textDescription);
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2024-07-04 19:18:57 +00:00
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nextVertex.getElement().getScreenVertex().setColor(Color.BLUE);
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2024-07-07 12:02:19 +00:00
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this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
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2024-07-02 22:46:21 +00:00
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2024-06-26 00:20:36 +00:00
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// Gehe von diesem Knoten aus alle erreichbaren Knoten durch
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2024-06-25 15:18:34 +00:00
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for (MarkedVertex<T> i: this.getSuccessors(nextVertex.getElement())) {
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2024-06-26 00:20:36 +00:00
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// Kante finde, die den jetzigen und nächsten Knoten verbindet
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for (MarkedEdge<U> j: this.getAllEdges()) {
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if (j.getSource() == nextVertex.getElement() && j.getDestination() == i) {
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// Berechne Distanz zu nächstem Knoten
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dist = distance.get(nextVertex.getElement()) + j.getWeighting();
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break;
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}
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}
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// Wenn es schon einen kürzeren Weg zum Knoten gibt, überspringen
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if ((distance.get(i) <= dist && distance.get(i) != -1) || visited.get(i)) {
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continue;
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}
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// Aktualisiere Distanz von Start zu nächstem Knoten
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distance.put(i, dist);
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2024-07-02 22:46:21 +00:00
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// Logging
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2024-07-07 12:02:19 +00:00
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textDescription = "Add " + i.getName() + " with " + dist + " weight to queue.";
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System.out.println(textDescription);
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2024-07-05 15:06:51 +00:00
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i.getScreenVertex().setColor(Color.YELLOW);
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2024-07-07 12:02:19 +00:00
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this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
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2024-07-02 22:46:21 +00:00
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2024-06-26 00:20:36 +00:00
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// Nehme nächsten Knoten in die Queue auf
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queue.add(new WrapperElement<>(i, dist));
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2024-06-25 15:18:34 +00:00
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}
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}
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2024-07-05 22:51:44 +00:00
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//zurücksetzten der Färbungen
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this.clearScreenGraphColor();
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2024-07-03 19:49:51 +00:00
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System.out.println("Done");
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// Gibt Distanz zu gefragtem Knoten zurück
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return distance.get(n2);
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}
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2024-07-05 13:12:42 +00:00
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2024-07-03 19:49:51 +00:00
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public int getShortestPathAStar(MarkedVertex<T> n1, MarkedVertex<T> n2) {
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// Erstellt Hashmap um Distanz von Startnoten zu jedem Knoten auf dem Graph zu tracken
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// Erstellt Hashmap um zu tracken welche Knoten schon besucht wurden
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// Initialisierung aller Distanzen auf UNENDLICH (= -1)
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// Initialisierung, dass kein Knoten besucht wurde
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HashMap<MarkedVertex<T>, Integer> distance = new HashMap<>();
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HashMap<MarkedVertex<T>, Boolean> visited = new HashMap<>();
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for (MarkedVertex<T> i: this.getAllVertexes()) {
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distance.put(i, -1);
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visited.put(i, false);
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}
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// Erstelle Schlange wo die nächsten Verbindungen drin sind
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PriorityQueue<WrapperElement<T>> queue = new PriorityQueue<>(new WrapperComparator<T>());
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// Distanz zu Startknoten auf 0
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// Weg zu Startknoten in die Schlange aufnehmen
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distance.put(n1, 0);
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queue.add(new WrapperElement<>(n1, 0));
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// Variable, die Distanz zwischen aktuellem Knoten und Nachfolger speichert
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int dist = 0;
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// Variable, die Distanz zwischen dem potenziell nächsten Knoten und dem Zielknoten speichert
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int airDist = 0;
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2024-07-06 18:37:42 +00:00
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// Variable, die Distanz zwischen dem aktuellen Knoten bis zum Endknoten speichert
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int distToFinish = 0;
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2024-07-03 19:49:51 +00:00
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// Zähler für LogList
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int step = 0;
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2024-07-07 12:02:19 +00:00
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// String für den Description Inhalt
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String textDescription;
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2024-07-03 19:49:51 +00:00
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2024-07-05 12:00:35 +00:00
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// Färben der Start und Ziel Knoten für Visualisierung + hinzufügen zur LogList
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n1.getScreenVertex().setColor(Color.RED);
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n2.getScreenVertex().setColor(Color.RED);
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2024-07-07 12:02:19 +00:00
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textDescription = "Startknoten: " + n1.getScreenVertex().getMarking()
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+ ", Endknoten: " + n2.getScreenVertex().getMarking();
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this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
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2024-07-05 12:00:35 +00:00
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2024-07-03 19:49:51 +00:00
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while (!queue.isEmpty()) {
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// Den nächsten Knoten, der am wenigsten kostet, besuchen
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WrapperElement<T> nextVertex = queue.poll();
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// Knoten als besucht makieren
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visited.put(nextVertex.getElement(), true);
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// Logging
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2024-07-07 12:02:19 +00:00
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textDescription = "Visit " + nextVertex.getElement().getName();
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System.out.println(textDescription);
|
2024-07-04 19:18:57 +00:00
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nextVertex.getElement().getScreenVertex().setColor(Color.BLUE);
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2024-07-07 12:02:19 +00:00
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this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
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2024-07-03 19:49:51 +00:00
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// Gehe von diesem Knoten aus alle erreichbaren Knoten durch
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for (MarkedVertex<T> i: this.getSuccessors(nextVertex.getElement())) {
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// Kante finde, die den jetzigen und nächsten Knoten verbindet
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for (MarkedEdge<U> j: this.getAllEdges()) {
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if (j.getSource() == nextVertex.getElement() && j.getDestination() == i) {
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//Berechnung der Heuristik über die Luftdistanz des nächsten Knoten zum Zielknoten
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airDist = (int) Math.sqrt(Math.pow((i.getCords()[0] - n2.getCords()[0]), 2)
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|
+ Math.pow((i.getCords()[1] - n2.getCords()[1]), 2));
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// Berechne Distanz zu nächstem Knoten
|
2024-07-06 18:37:42 +00:00
|
|
|
dist = distance.get(nextVertex.getElement()) + j.getWeighting();
|
|
|
|
distToFinish = distance.get(nextVertex.getElement()) + j.getWeighting() + airDist;
|
2024-07-03 19:49:51 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
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|
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|
|
// Wenn es schon einen kürzeren Weg zum Knoten gibt, überspringen
|
|
|
|
if ((distance.get(i) <= dist && distance.get(i) != -1) || visited.get(i)) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Aktualisiere Distanz von Start zu nächstem Knoten
|
|
|
|
distance.put(i, dist);
|
|
|
|
|
|
|
|
// Logging
|
2024-07-07 12:02:19 +00:00
|
|
|
textDescription = "Add " + i.getName() + " with " + dist + " weight to queue.";
|
|
|
|
System.out.println(textDescription);
|
2024-07-05 15:06:51 +00:00
|
|
|
i.getScreenVertex().setColor(Color.YELLOW);
|
2024-07-07 12:02:19 +00:00
|
|
|
this.logList.add(new OurLogElement(step, textDescription, 0, this.getScreenGraphCopy()));
|
2024-07-03 19:49:51 +00:00
|
|
|
|
|
|
|
// Nehme nächsten Knoten in die Queue auf
|
2024-07-06 18:37:42 +00:00
|
|
|
queue.add(new WrapperElement<>(i, distToFinish));
|
2024-07-03 19:49:51 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-07-05 22:51:44 +00:00
|
|
|
//zurücksetzten der Färbungen
|
|
|
|
this.clearScreenGraphColor();
|
|
|
|
|
2024-07-03 17:41:46 +00:00
|
|
|
System.out.println("Done");
|
2024-06-26 00:20:36 +00:00
|
|
|
// Gibt Distanz zu gefragtem Knoten zurück
|
|
|
|
return distance.get(n2);
|
2024-06-25 15:18:34 +00:00
|
|
|
}
|
2024-07-05 22:51:44 +00:00
|
|
|
|
|
|
|
// Methode für das Zurücksetzten der Knotenfarben
|
|
|
|
public void clearScreenGraphColor(){
|
|
|
|
for(visualizationElements.Vertex screenVertexes : this.getScreenGraph().getVertexes()){
|
|
|
|
screenVertexes.setColor(Color.BLACK);
|
|
|
|
}
|
|
|
|
}
|
2024-06-15 14:48:28 +00:00
|
|
|
}
|