Help with creating a class

Programming Questions

kopoku

in Programming Questions • 8 months ago

Hello guys, total newbie here. I am creating an application that mines data from twitter and represents each of them as an ellipse. I want the actual tweet to show up on mouseover, but since I have the ellipses randomly positioned as x and y, their values keep changing with each loop, making it impossible for me to get the actual coordinates. I figured I will create a class that draws each tweet as an ellipse, so I can call the class and add behavior to it. I am having so much trouble making the class work. I keep getting errors. Please help!

boolean rollover = false;
boolean wrd = false;
boolean wrd2 = false;
String msg;
ArrayList message;
float x;
float y;
float radius;
GeoLocation loc;
double lo;
double la;
float castLat;
float castLon;
boolean retweet;
public boolean ss;
User user;
long follow;
String city;
String lang;
String tz;
long rtCount;
String reply;
String keywords[] = {"restaurant"};
String keyword1 = "burgers";
String keyword2 = "sandwich";
void setup() {
//frameRate(1);
PFont font = loadFont ("HelveticaNeue-48.vlw");
textFont(font, 20);
background(#0A4A4F);
size(1280, 720);
noStroke();
smooth();
connectTwitter();
twitter.addListener(listener);
if (keywords.length==0) twitter.sample();
else twitter.filter(new FilterQuery().track(keywords));
}
static String OAuthConsumerKey = "";
static String OAuthConsumerSecret = "";
static String AccessToken = "";
static String AccessTokenSecret = "";
TwitterStream twitter = new TwitterStreamFactory().getInstance();
// Initial connection
void connectTwitter() {
twitter.setOAuthConsumer(OAuthConsumerKey, OAuthConsumerSecret);
AccessToken accessToken = loadAccessToken();
twitter.setOAuthAccessToken(accessToken);
}
// Loading up the access token
private static AccessToken loadAccessToken() {
return new AccessToken(AccessToken, AccessTokenSecret);
}
class Drawdata {
StatusListener listener = new StatusListener() {
public void onStatus(Status status) {
try {
message = new ArrayList();
message.add(msg);
loc = status.getGeoLocation();
la = (float) loc.getLatitude();
lo = (float) loc.getLongitude();
castLat = map((int)la, -90, 90, 0, 500);
castLon = map((int)la, -180, 180, 0, width);
retweet = status.isRetweet();
follow = user.getFollowersCount();
city = user.getLocation();
} catch(Exception e) {}
try {
x = random(0, width);
y = random(0, height - 200);
radius = map(status.getUser().getFollowersCount(), 0, 10000, 5, 30);
float d = dist(x, y, mouseX, mouseY);
user = status.getUser();
lang = user.getLang();
tz = user.getTimeZone();
rtCount = status.getRetweetCount();
reply = status.getInReplyToScreenName();
ss = status.isFavorited();
msg = trim(status.getText());
for (int i = 0; i < message.size(); i++) {
println(message);
if (match(msg, keyword1) != null) {
if (match(tz, "US") != null) {
fill(#E5E539, 70);
ellipse(x, y, radius, radius);
noStroke();
fill(#1C1C1C);
rect(0, height - 200, width, 200);
fill(230);
textSize(16);
text(msg, 50, height - 160);
}//closes second if statement
}
if (match(msg, keyword2) != null) {
if (match(tz, "US") != null) {
fill(#F26453, 70);
ellipse(x, y, radius, radius);
noStroke();
fill(#1C1C1C);
rect(0, height - 200, width, 200);
fill(230);
textSize(16);
text(msg, 50, height - 160);
}
}
}
} catch(Exception e){
}
} // closes onStatus
public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
//System.out.println("Got a status deletion notice id:" + statusDeletionNotice.getStatusId());
}
public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
// System.out.println("Got track limitation notice:" + numberOfLimitedStatuses);
}
public void onScrubGeo(long userId, long upToStatusId) {
System.out.println("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
}
public void onException(Exception ex) {
ex.printStackTrace();
}
};
}
void draw() {
//I will like to call the class here
}

Replies(7)

Chrisir

Re: Help with creating a class

8 months ago

Hello,

welcome here.

The general idea is this:

You have an arraylist of the class, in setup() (or whereever) you add data to it using add(). Here you would use twitter data to add new entries I guess.
You read the arraylist out in draw().

The class describes one GeoLocation. All data and all that it can do (its methods) or that can happen to that GeoLocation are within the class.

I didn't use your program but wrote my own sketch just to demonstrate GeoLocation.

Greetings, Chrisir

//
ArrayList<GeoLocation> mapPoints = new ArrayList();
void setup()
{
size( 800, 800 );
//
mapPoints.add(new GeoLocation(333, 333, "1", "poll"));
mapPoints.add(new GeoLocation(93, 233, "2222", "foll"));
mapPoints.add(new GeoLocation(153, 173, "23", "roll"));
//
} // setup
void draw()
{
background(0);
for (int j = 0; j< mapPoints.size(); j++) {
GeoLocation myMapPoint = mapPoints.get(j);
myMapPoint.display();
} // for
for (int j = 0; j< mapPoints.size(); j++) {
GeoLocation myMapPoint = mapPoints.get(j);
if (myMapPoint.mouseOver())
break;
} // for
} // draw
// =====================================
class GeoLocation {
PVector pos = new PVector();
String name;
String textMouseOver;
// constr
GeoLocation ( float x_, float y_, String name_, String textMouseOver_ ) {
pos.x=x_;
pos.y=y_;
name=name_;
textMouseOver=textMouseOver_;
}// constr
void display() {
fill(245);
text(name, pos.x, pos.y);
} // method
boolean mouseOver() {
if (dist(pos.x, pos.y, mouseX, mouseY) < 50 ) {
noFill();
stroke(245);
rect(pos.x+12, pos.y+12, 40, 40);
fill(255);
text(textMouseOver, pos.x+12+4, pos.y+12+4, 40, 40);
return true;
}
return false;
} // method
} //
// ===============================================================

kopoku

Re: Re: Help with creating a class

8 months ago

Hello, I managed to create the class, but still can't get the mouse rollover events to work. You see, my app uses random coordinates and not actual geolocated data. I've cleaned up my code a bit if that makes it easier to read. Thanks for your help.

boolean rollover = false;
boolean wrd = false;
boolean wrd2 = false;
String msg;
ArrayList message;
float x;
float y;
float d;
float radius;
GeoLocation loc;
double lo;
double la;
float castLat;
float castLon;
boolean retweet;
public boolean ss;
User user;
long follow;
String city;
String lang;
String tz;
long rtCount;
String reply;
String keywords[] = {"food"};
String keyword1 = "sandwich";
String keyword2 = "burgers";
Ball myBall;
void setup() {
//frameRate(1);
PFont font = loadFont ("HelveticaNeue-48.vlw");
textFont(font, 20);
background(#0A4A4F);
size(1280, 720);
noStroke();
smooth();
connectTwitter();
twitter.addListener(listener);
if (keywords.length==0) twitter.sample();
else twitter.filter(new FilterQuery().track(keywords));
}
void draw() {
myBall = new Ball(random(width), random(height - 200));
myBall.run();
}

class Ball {
float x = 0;
float y = 0;
float d = dist(x, y, mouseX, mouseY);
Ball(float _x, float _y) {
x = _x;
y = _y;
}
void run() {
tweet();
}
void move() {
x += 10;
y += 10;
}
void tweet() {
if (wrd) {
fill(#E5E539, 70);
ellipse(x, y, radius, radius);
noStroke();
if (d < radius + 2) { // mouseover function
fill(#1C1C1C);
rect(0, height - 200, width, 200);
fill(230);
textSize(16);
text(msg, 50, height - 160);
}
}
if (wrd2) {
fill(#F26453, 70);
ellipse(x, y, radius, radius);
noStroke();
if (d < radius + 2) { // mouseover function
fill(#1C1C1C);
rect(0, height - 200, width, 200);
fill(230);
textSize(16);
text(msg, 50, height - 160);
}
}
wrd = false;
wrd2 = false;
}
}

static String OAuthConsumerKey = "";
static String OAuthConsumerSecret = "";
static String AccessToken = "";
static String AccessTokenSecret = "";
TwitterStream twitter = new TwitterStreamFactory().getInstance();
void connectTwitter() {
twitter.setOAuthConsumer(OAuthConsumerKey, OAuthConsumerSecret);
AccessToken accessToken = loadAccessToken();
twitter.setOAuthAccessToken(accessToken);
}
private static AccessToken loadAccessToken() {
return new AccessToken(AccessToken, AccessTokenSecret);
}

StatusListener listener = new StatusListener() {
public void onStatus(Status status) {
try {
message = new ArrayList();
message.add(msg);
loc = status.getGeoLocation();
la = (float) loc.getLatitude();
lo = (float) loc.getLongitude();
castLat = map((int)la, -90, 90, 0, 500);
castLon = map((int)la, -180, 180, 0, width);
retweet = status.isRetweet();
follow = user.getFollowersCount();
city = user.getLocation();
} catch(Exception e) {}
try {
radius = map(status.getUser().getFollowersCount(), 0, 10000, 5, 30);
user = status.getUser();
lang = user.getLang();
tz = user.getTimeZone();
rtCount = status.getRetweetCount();
reply = status.getInReplyToScreenName();
ss = status.isFavorited();
msg = trim(status.getText());
for (int i = 0; i < message.size(); i++) {
if (match(msg, keyword1) != null) {
if (match(tz, "US") != null) {
wrd = true;
}
}
if (match(msg, keyword2) != null) {
if (match(tz, "US") != null) {
wrd2 = true;
}
}
}
} catch(Exception e){
}
}
public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
}
public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
}
public void onScrubGeo(long userId, long upToStatusId) {
System.out.println("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
}
public void onException(Exception ex) {
ex.printStackTrace();
}
};

kopoku

Re: Help with creating a class

8 months ago

Thanks a lot. That helps.

Chrisir

Re: Help with creating a class

8 months ago

umh....

afaik

float d = dist(x, y, mouseX, mouseY);

doesn't work (it works only once when the object is created which doesn't help you at all)

make it

float d;

and say

d = dist(x, y, mouseX, mouseY);

directly before line 31 and line 45

Greetings, Chrisir

kopoku

Re: Help with creating a class

8 months ago

Do you think I'm calculating the value 'd' wrongly? WHen I print out into the console it constantly shows a much higher number than the 'radius' value. Here are the snippets:

radius = map(status.getUser().getFollowersCount(), 0, 10000, 5, 30); // for the radius value
d = dist(x, y, mouseX, mouseY); // for the d value

Thanks for the help!

Chrisir

Re: Help with creating a class

8 months ago

as I said, the line

d = dist(x, y, mouseX, mouseY); // for the d value

must be directly before you use d every time, not somewhere else.

Did you try what I suggested?

kopoku

Re: Re: Help with creating a class

8 months ago

I did try it, but the mouseover event still did not work. I printed out to the console and realized the d value was contsantly higher than the radius value. I've been struggling with this code for weeks now, but to no avail..

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