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Added calculation method for all Destinations from current_user zip

destination_runtime_improvement
Selim Eser 2024-06-11 22:39:07 +02:00
parent d5408617e1
commit 531407dcf7
3 changed files with 35 additions and 34 deletions
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.DS_Store vendored
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4
src/main/java/de/hs_mannheim/domain/Destination.java
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@ -5,6 +5,10 @@ public class Destination {
private String zip;
private double distance_from_user;
public Destination(String zip, double distance_from_user) {
this.zip = zip;
this.distance_from_user = distance_from_user;
}
public String getZip() {
return zip;
}

63
src/main/java/de/hs_mannheim/domain/System.java
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@ -250,8 +250,6 @@ public class System {
public ArrayList<String> random_destinations_car() {
calc_all_distances();
ArrayList<String> mem = new ArrayList<>();
ArrayList<String> result = new ArrayList<>();
@ -268,8 +266,6 @@ public class System {
public ArrayList<String> random_destinations_bike() {
calc_all_distances();
ArrayList<String> mem = new ArrayList<>();
ArrayList<String> result = new ArrayList<>();
@ -423,12 +419,17 @@ public class System {
+ "Überübermorgen: " + weather_day_3 + ": Minimum: " + temperature_day_3_low + " °C" + "; Maximum: " + temperature_day_3_high + " °C";
}
public String distance(String destination_zip) {
public boolean all_distances() {
double lon1 = -1;
double lon2 = -1;
double lat1 = -1;
double lat2 = -1;
double dLat;
double dLon;
double a;
double distance;
double result;
InputStream inputStream = System.class.getResourceAsStream("/zip.csv");
@ -437,11 +438,6 @@ public class System {
while ((line = reader.readLine()) != null) {
line = line.replace("\"", "");
if (line.split(";")[0].equals(destination_zip)) {
lon2 = Double.parseDouble(line.split(";")[2]);
lat2 = Double.parseDouble(line.split(";")[3]);
}
if (line.split(";")[0].equals("" + current_user.getZip())) {
lon1 = Double.parseDouble(line.split(";")[2]);
lat1 = Double.parseDouble(line.split(";")[3]);
@ -450,38 +446,39 @@ public class System {
} catch (Exception e) {
}
if (lon1 == -1 || lon2 == -1 || lat1 == -1 || lat2 == -1)
return "Es ist ein Fehler aufgetreten!";
double dLat = lat2 - lat1;
double dLon = lon2 - lon1;
double a = Math.pow(Math.sin(Math.toRadians(dLat / 2.0)), 2) + Math.pow(Math.sin(Math.toRadians(dLon / 2.0)), 2) * Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2));
double distance = 6378.388 * 2.0 * Math.atan2(Math.sqrt(a), Math.sqrt(1.0 - a));
return "" + (Math.round((distance * 1.25) * 1000) / 1000.0) + " km";
}
public void calc_all_distances() {
if (!this.distances.isEmpty())
return;
InputStream inputStream = System.class.getResourceAsStream("/zip.csv");
try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
String line;
while ((line = reader.readLine()) != null) {
line = line.replace("\"", "");
this.distances.add(line.split(";")[0] + ";" + line.split(";")[1] + ";" + Double.parseDouble(distance(line.split(";")[0]).replace(" km", "")));
lon2 = Double.parseDouble(line.split(";")[2]);
lat2 = Double.parseDouble(line.split(";")[3]);
if (lon1 == -1 || lon2 == -1 || lat1 == -1 || lat2 == -1)
return false;
dLat = lat2 - lat1;
dLon = lon2 - lon1;
a = Math.pow(Math.sin(Math.toRadians(dLat / 2.0)), 2) + Math.pow(Math.sin(Math.toRadians(dLon / 2.0)), 2) * Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2));
distance = 6378.388 * 2.0 * Math.atan2(Math.sqrt(a), Math.sqrt(1.0 - a));
result = Math.round((distance * 1.25) * 1000) / 1000.0;
this.all_destinations.put(line.split(";")[0],new Destination(line.split(";")[0], result));
}
} catch (Exception e) {
}
return true;
}
public String distance(String destination_zip){
return "" + this.all_destinations.get(destination_zip) + " km";
}
public String[] travel_time(String destination_zip) {