I have just started learning Processing, and am trying to map a Twitter stream in 3D.

Here is my code:

2. import processing.opengl.*;
3. import damkjer.ocd.*;
4. 
   
5. Camera cam;
6. 
   
7. PFont fontA, fontB;
8. 
   
9. int numTerms = 9;
10. int bufferRate = 20;
11. int z [] = new int [numTerms];
12. int now;
13. int end;
14. 
    
15. int meshWidthX = 250;
16. int meshShiftX = 500;
17. int meshCols = 3;
18. int meshSensY = 10;
19. int meshShiftY = 800;
20. int meshWidthZ = 100;
21. int tweetBoxW = 100;
22. int tweetBoxH = 100;
23. 
    
24. String [] termsLabel = {
25.   "hello", "world", "helloworld", "processing", "arduino", "edinburgh","university","scotland","architecture"
26. };
27. 
    
28. String terms[] = {
29.   "hello", "world", "helloworld", "processing", "arduino", "edinburgh","university","scotland","architecture"
30. };
31. 
    
32. String gt [] = new String [numTerms];
33. String gf [] = new String [numTerms];
34. String gn [] = new String [numTerms];
35. long lastId [] = new long [numTerms];
36. 
    
37. void setup () {
38. 
    
39.   size (screen.width, screen.height, OPENGL);
40.   smooth ();
41. 
    
42.   cam = new Camera (this, 500, 500, 1000);
43. 
    
44.   fontA = loadFont ("TwCenMT-BoldItalic-150.vlw");
45.   fontB = loadFont ("TwCenMT-Regular-150.vlw");
46. 
    
47.   Twitter twitter = new Twitter ();
48.   for (int party = 0; party < numTerms; party++) {
49.     try {
50.       Query query = new Query (terms [party]);
51.       QueryResult result = (QueryResult) twitter.search (query);
52.       java.util.List tweets = result.getTweets ();
53.       println (tweets.size ());
54.       Tweet t = (Tweet) tweets.get (0);
55.       lastId [party] = t.getId ();
56.       println (lastId [party]);
57.       gt [party] = t.getText ();
58.       gf [party] = t.getFromUser ();
59.       gn [party] = t.getProfileImageUrl ();
60.     }
61.     catch (Exception e) {
62.       System.out.println (e);
63.     }
64.   }
65.   
66.   
67.   
68. }
69. 
    
70. void draw () {
71. 
    
72.   cam.feed ();
73. 
    
74.   now = second ();
75.   background (0);
76. 
    
77.   int maximum = max (z);
78.   int total = z [0] + z [1] + z [2] + z [3] + z [4] + z [5] + z [6] + z [7] + z [8];
79. 
    
80.   for (int i = 0; i < 2; i++) {
81.     int percent = 0;
82.     int percentNext = 0;
83.     if (total > 0) percent = int ( (100 * z [i]) / total);
84.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
85. 
    
86.     int colour = 0;
87.     if (percent > 0) colour = int (3 * percent);
88.     else colour = 0;
89. 
    
90.     stroke (colour);
91.     noFill ();
92. 
    
93.     line ( (i* meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 0 * meshWidthZ, ((i + 1) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percentNext), 0 * meshWidthZ);
94.   }
95.   for (int i = 0; i < 3; i++) {
96.     int percent = 0;
97.     int percentNext = 0;
98.     if (total > 0) percent = int ( (100 * z [i]) / total);
99.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
100. 
     
101.     fill (255, 0, 0, 100);
102.     textFont (fontB, 10);     
103.     text (gt [i] + 
104.       "               FROM: " + gf [i], (i * meshWidthX + meshShiftX), meshShiftY - (meshSensY * percent), tweetBoxW, tweetBoxH, 0 * meshWidthZ);
105.     fill (125 / 2, 100);
106.     textFont (fontA, 15);     
107.     text (termsLabel[i] + " - " + percent + ".0%", (i * meshWidthX + meshShiftX), meshShiftY - (meshSensY * percent), 0 * meshWidthZ);
108.   }
109. 
     
110. 
     
111. 
     
112. 
     
113. 
     
114. 
     
115.   for (int i = 3; i < 5; i++) {
116.     int percent = 0;
117.     int percentNext = 0;
118.     if (total > 0) percent = int ( (100 * z [i]) / total);
119.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
120. 
     
121.     int colour = 0;
122.     if (percent > 0) colour = int (3 * percent);
123.     else colour = 0;
124. 
     
125.     stroke (colour);
126.     noFill ();
127. 
     
128.     line ( ((i - 3) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 1 * meshWidthZ, ((i - 2) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percentNext), 1 * meshWidthZ);
129.   }
130. 
     
131.   for (int i = 3; i < 6; i++) {
132.     int percent = 0;
133.     int percentNext = 0;
134.     if (total > 0) percent = int ( (100 * z [i]) / total);
135.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
136. 
     
137.     fill (255, 0, 0, 100);
138.     textFont (fontB, 10);     
139.     text (gt [i] + 
140.       "               FROM: " + gf [i], ((i - 3) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), tweetBoxW, tweetBoxH, 1 * meshWidthZ);
141.     fill (255 / 2, 100);
142.     textFont (fontA, 15);     
143.     text (termsLabel[i] + " - " + percent + ".0%", ((i - 3) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 1 * meshWidthZ);
144.   }
145. 
     
146. 
     
147. 
     
148. 
     
149. 
     
150. 
     
151.   for (int i = 6; i < 8; i++) {
152.     int percent = 0;
153.     int percentNext = 0;
154.     if (total > 0) percent = int ( (100 * z [i]) / total);
155.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
156. 
     
157.     int colour = 0;
158.     if (percent > 0) colour = int (3 * percent);
159.     else colour = 0;
160. 
     
161.     stroke (colour);
162.     noFill ();
163. 
     
164.     line ( ((i - 6) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 2 * meshWidthZ, ((i - 5) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percentNext), 2 * meshWidthZ);
165.   }
166. 
     
167.   for (int i = 6; i < 8; i++) {
168.     int percent = 0;
169.     int percentNext = 0;
170.     if (total > 0) percent = int ( (100 * z [i]) / total);
171.     if (total > 0) percentNext = int ( (100 * z [i + 1]) / total);
172. 
     
173.     fill (255, 0, 0, 100);
174.     textFont (fontB, 10);     
175.     text (gt [i] + 
176.       "               FROM: " + gf [i], ((i - 6) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), tweetBoxW, tweetBoxH, 2 * meshWidthZ);
177.     fill (255 / 2, 100);
178.     textFont (fontA, 15);     
179.     text (termsLabel[i] + " - " + percent + ".0%", ((i - 6) * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 2 * meshWidthZ);
180.   }
181. 
     
182. 
     
183. 
     
184. 
     
185. 
     
186. 
     
187.   for (int i = 0; i < 3; i++) {
188.     int percent = 0;
189.     int percentNextSq = 0;
190.     if (total > 0) percent = int ( (100 * z [i]) / total);
191.     if (total > 0) percentNextSq = int ( (100 * z [i + 3]) / total);
192. 
     
193.     int colour = 0;
194.     if (percent > 0) colour = int (3 * percent);
195.     else colour = 0;
196. 
     
197.     stroke (colour);
198.     noFill ();
199. 
     
200.     line ( (i * meshWidthX) + meshShiftX, meshShiftY - (meshSensY * percent), 0 * meshWidthZ, ((i + 3) * meshWidthX) - 250, meshShiftY - (meshSensY * percentNextSq), 1 * meshWidthZ);
201.   }
202. 
     
203.   for (int i = 3; i < 6; i++) {
204.     int percent = 0;
205.     int percentNextSq = 0;
206.     if (total > 0) percent = int ( (100 * z [i]) / total);
207.     if (total > 0) percentNextSq = int ( (100 * z [i + 3]) / total);
208. 
     
209.     int colour = 0;
210.     if (percent > 0) colour = int (3 * percent);
211.     else colour = 0;
212. 
     
213.     stroke (colour);
214.     noFill ();
215. 
     
216.     line ( (i * meshWidthX) - 250, meshShiftY - (meshSensY * percent), 1 * meshWidthZ, ((i + 3) * meshWidthX) - 1000, meshShiftY - (meshSensY * percentNextSq), 2 * meshWidthZ);
217.   }
218. 
     
219. 
     
220. 
     
221. 
     
222. 
     
223.   if (now!= end && now%bufferRate == 0) {
224.     Twitter twitter = new Twitter();
225.     for (int party = 0; party < numTerms; party++) {
226.       try {
227.         Query query = new Query (terms [party]);
228.         query.setSinceId (lastId [party]);
229.         QueryResult result = (QueryResult) twitter.search (query);
230.         java.util.List tweets = result.getTweets ();
231.         if (tweets.size () > 0) {
232.           Tweet t = (Tweet) tweets.get (0);
233.           lastId [party] = t.getId ();
234.           gt [party] = t.getText ();
235.           gf [party] = t.getFromUser ();
236.           println (gt [party]);
237.           println (lastId [party]);
238.           z [party] = min (meshShiftY / numTerms * meshShiftY, z [party] + tweets.size ());
239.         }
240.       }
241.       catch (Exception e) {
242.         System.out.println (e);
243.       }
244.     }
245.     end = now;
246.   }
247. }
248. 
     
249. void mouseMoved () {
250.   cam.look (radians (mouseX - pmouseX) / 4, radians (mouseY - pmouseY) / 4);
251. }
252. void mouseDragged () {
253. 
     
254.   cam.truck ((mouseX - pmouseX) * 2);
255.   cam.dolly ((mouseY - pmouseY) * -2);

The code is running very slowly, and I think this is because so much of it is within draw. I am guessing I need to create a class, however I don't know where to start as the examples on the Processing site don't contain a variable i (apologies if I am using the wrong terminology!!!)

Any help is greatly appreciated!!!