private String makeText2(BusEdge be) {
return noderna.find(be.from).name
+ " till "
+ noderna.find(be.to).name
+ " tar "
+ be.getWeight()
+ " minuter";
}
private String makeText1(BusEdge be) {
return "Tag "
+ be.line
+ " "
+ frome
+ " "
+ noderna.find(be.from).name
+ " till "
+ noderna.find(be.to).name
+ " framme efter "
+ be.getWeight();
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == from) {
String tmpFrom = from.getText().trim();
String tmpTo = to.getText().trim();
if (tmpFrom.equals("MST") || tmpFrom.equals("mst")) findMinSpan();
else {
try { // check if from exists
// String str = from.getText();
// fixa så man kan skippa att skriva första med stor bokstav
tmpFrom = Character.toUpperCase(tmpFrom.charAt(0)) + tmpFrom.substring(1);
int pos = noderna.findLeading(tmpFrom).getNodeNo();
route.setText(introText + "\n");
from.setText(noderna.find(pos).toString());
} catch (NullPointerException npe) {
route.setText(felTextStart + "\n");
return;
}
if (!tmpTo.equals("")) {
findShort();
}
}
} else if (e.getSource() == to) {
String tmpFrom = from.getText().trim();
String tmpTo = to.getText().trim();
if (tmpTo.equals("MST") || tmpTo.equals("mst")) findMinSpan();
else {
try { // check if to exists
// String str = to.getText();
tmpTo = Character.toUpperCase(tmpTo.charAt(0)) + tmpTo.substring(1);
int pos = noderna.findLeading(tmpTo).getNodeNo();
route.setText(introText + "\n");
to.setText(noderna.find(pos).toString());
} catch (NullPointerException npe) {
route.setText(felTextStart + "\n");
return;
}
if (!tmpFrom.equals("")) {
findShort();
}
}
/*
else if ( ! from.getText().equals("") )
findShort();
*/
}
}
// ====================================================================
private void findShort() {
// svårt att behålla linjefärgerna?
int start, s**t;
try { // read from station
String str = from.getText();
str = Character.toUpperCase(str.charAt(0)) + str.substring(1);
start = noderna.find(str).getNodeNo();
} catch (NullPointerException npe) {
route.setText(felTextStart + "\n");
return;
}
try { // read to station
String str = to.getText();
str = Character.toUpperCase(str.charAt(0)) + str.substring(1);
s**t = noderna.find(str).getNodeNo();
} catch (NullPointerException npe) {
route.setText(felTextSlut + "\n");
return;
}
double totWeight = 0;
int totNodes = 0;
route.setText("");
karta.clearLayer(DrawGraph.Layer.OVERLAY);
Iterator<BusEdge> it = grafen.shortestPath(start, s**t);
while (it.hasNext()) {
BusEdge e = it.next();
route.append(makeText1(e) + "\n");
totNodes++;
totWeight += e.getWeight();
// draw the shortest path
BusStop from = noderna.find(e.from), to = noderna.find(e.to);
karta.drawLine(
from.xpos, from.ypos, to.xpos, to.ypos, Color.black, 4.0, DrawGraph.Layer.OVERLAY);
}
karta.repaint();
route.append("Antal: " + totNodes + " totalvikt: " + totWeight + "\n");
from.setText("");
to.setText("");
} // findShort
// ====================================================================
private void findMinSpan() {
route.setText("");
Iterator<BusEdge> it = grafen.minimumSpanningTree();
if (it != null && it.hasNext()) {
double totWeight = 0;
int totNodes = 0; // only for easier testing
karta.clearLayer(DrawGraph.Layer.OVERLAY);
while (it.hasNext()) {
BusEdge be = it.next();
totNodes++;
totWeight += be.getWeight();
route.append(makeText2(be) + "\n");
// draw the MST
BusStop from = noderna.find(be.from);
BusStop to = noderna.find(be.to);
karta.drawLine(
from.xpos, from.ypos, to.xpos, to.ypos, Color.red, 2.5, DrawGraph.Layer.OVERLAY);
}
karta.repaint();
route.append("Antal: " + totNodes + " totalvikt: " + totWeight + "\n");
} else from.setText("Det fanns ej någon lösning");
to.setText("");
from.setText("");
} // findMinSpan
// experimental
// ====================================================================
// ====================================================================
// ====================================================================
private void readAndDrawBIGGraph(String file) {
// behövs inte än
// @TODO
// hur rita flera linjer mellan 2 noder? (för flera linjer)
// reading of the graph should be done in the graph itself
// it should be possible to get an iterator over nodes and one over edges
// read in all the stops and lines and draw the lmap
Scanner indata = null;
// insert into p-queue to get them sorted
names = new PriorityQueue<String>();
try {
// Read stops and put them in the node-table
// in order to give the user a list of possible stops
// assume input file is correct
indata = new Scanner(new File(file + "-stops.txt"), "ISO-8859"); //
while (indata.hasNext()) {
String hpl = indata.next().trim();
int xco = indata.nextInt();
int yco = indata.nextInt();
noderna.add(new BusStop(hpl, xco, yco));
names.add(hpl);
// Draw
// this is a fix: fixa att Kålltorp och Torp är samma hållplats
if (hpl.equals("Torp")) {
xco += 11;
hpl = " / Torp";
}
karta.drawString(hpl, xco, yco, DrawGraph.Layer.BASE);
}
indata.close();
// Read in the lines and add to the graph
indata = new Scanner(new File(file + "-lines.txt"), "ISO-8859");
grafen = new DirectedGraph<BusEdge>(noderna.noOfNodes());
Color color =
new Color((float) Math.random(), (float) Math.random(), (float) Math.random()); //
String lineNo = "1"; //
while (indata.hasNext()) { // assume lines are correct
int from = noderna.find(indata.next()).getNodeNo();
int to = noderna.find(indata.next()).getNodeNo();
grafen.addEdge(new BusEdge(from, to, indata.nextInt(), lineNo));
indata.nextLine(); // skip rest of line
// Draw
BusStop busFrom = noderna.find(from);
BusStop busTo = noderna.find(to);
karta.drawLine(
busFrom.xpos, busFrom.ypos, busTo.xpos, busTo.ypos, color, 2.0f, DrawGraph.Layer.BASE);
}
indata.close();
} catch (FileNotFoundException fnfe) {
throw new RuntimeException(" Indata till busshållplatserna saknas");
}
karta.repaint();
} // end readAndDrawBIGGraph
// ====================================================================
// ====================================================================
private void readAndDrawGraph() {
// @TODO
// hur rita flera linjer mellan 2 noder? (för flera linjer)
// reading of the graph should be done in the graph itself
// it should be possible to get an iterator over nodes and one over edges
// read in all the stops and lines and draw the lmap
Scanner indata = null;
// insert into p-queue to get them sorted
names = new PriorityQueue<String>();
try {
// Read stops and put them in the node-table
// in order to give the user a list of possible stops
// assume input file is correct
indata = new Scanner(new File("stops.noBOM.txt"), "UTF-8");
while (indata.hasNext()) {
String hpl = indata.next().trim();
int xco = indata.nextInt();
int yco = indata.nextInt();
noderna.add(new BusStop(hpl, xco, yco));
names.add(hpl);
// Draw
/*
// Denna fix som slår ihop Kålltorp och Torp är förvirrande eftersom de är olika noder i grafen.
// Tror man att det är samma nod blir resultatet förrvirrande.
// Till nästa gång: Gör till samma nod med namnet Virginsgatan. Så är det i verkligheten nu.
// this is a fix: fixa att Kålltorp och Torp är samma hållplats
if ( hpl.equals("Torp") ) {
xco += 11;
hpl = " / Torp";
}
*/
karta.drawString(hpl, xco, yco, DrawGraph.Layer.BASE);
}
indata.close();
// Read in the lines and add to the graph
indata = new Scanner(new File("lines.noBOM.txt"), "UTF-8");
grafen = new DirectedGraph<BusEdge>(noderna.noOfNodes());
while (indata.hasNext()) {
String lineNo = indata.next();
int antal = indata.nextInt() - 1;
int from = noderna.find(indata.next()).getNodeNo();
// hur rita flera linjer mellan 2 noder?
// enkel inc fungerar inte
// färgen kunde vara "äkta" dvs linjefärg
Color color =
new Color((float) Math.random(), (float) Math.random(), (float) Math.random());
for (int i = 0; i < antal; i++) {
int to = noderna.find(indata.next()).getNodeNo();
grafen.addEdge(new BusEdge(from, to, indata.nextInt(), lineNo));
// Draw
BusStop busFrom = noderna.find(from);
BusStop busTo = noderna.find(to);
karta.drawLine(
busFrom.xpos,
busFrom.ypos,
busTo.xpos,
busTo.ypos,
color,
2.0f,
DrawGraph.Layer.BASE);
from = to;
}
}
indata.close();
} catch (FileNotFoundException fnfe) {
throw new RuntimeException(" Indata till busshållplatserna saknas");
}
karta.repaint();
} // end readAndDrawGraph