Processing Forum

Get intersection of cursor with a component on sketch.

[3 Replies]
- 18-Jun-2011 06:10 AM
- Forum: Contributed Library Questions
I have various applets onto the base PApplet.Now I want to know the intersection point of cursor with the child applets.

Now to check if the cursor is within a perticular applet, I took the cursor points as :
1. withinApp= checkBounds(tcur.getScreenX(parentPApplet.width ),tcur.getScreenY(parentPApplet.height));
3. boolean checkBounds(float X,float Y)
4. {
5. float leftX = this.getPositionX(); //upper left X of applet
6. float leftY = this.getPositionY(); //upper left Y of applet
8. if( X>leftX && Y >leftY && ( X < leftX+ this.getWidth() )&& (Y < leftY +this.getHeight()) )
9. return(true);
10. else
11. return false;
12. }
Now if cursor is within app then I wish to draw a flower at that point.But if I draw flower at the same point as

X = tcur.getScreenX(parentPApplet.width );
Y =tcur.getScreenY(parentPApplet.height);

then it does not draw within child app.Then what should I do to solve this prob??

Resize the Pgraphics!!!

[1 Reply]
- 08-Jun-2011 10:49 PM
- Forum: Programming Questions
I am creating a PGraphics and on the mouse click ,I wish to increase the size of the graphics .But when I am trying to do so I am getting an error :

processing.app.debug.RunnerException: ArrayIndexOutOfBoundsException: Coordinate out of bounds!
    at processing.app.Sketch.placeException(Sketch.java:1543)
    at processing.app.debug.Runner.findException(Runner.java:582)
    at processing.app.debug.Runner.reportException(Runner.java:558)
    at processing.app.debug.Runner.exception(Runner.java:498)
    at processing.app.debug.EventThread.exceptionEvent(EventThread.java:367)
    at processing.app.debug.EventThread.handleEvent(EventThread.java:255)
    at processing.app.debug.EventThread.run(EventThread.java:89)
Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
    at sun.awt.image.IntegerInterleavedRaster.setDataElements(IntegerInterleavedRaster.java:404)
    at processing.core.PGraphicsJava2D$ImageCache.update(Unknown Source)
    at processing.core.PGraphicsJava2D.imageImpl(Unknown Source)
    at processing.core.PGraphics.image(Unknown Source)
    at processing.core.PApplet.image(Unknown Source)
    at sketch_jun09a.draw(sketch_jun09a.java:32)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

and the code is
1. PGraphics pg;
2. void setup()
3. {
4. size(600,600);
5. pg = createGraphics(200,200,P2D);
6. }
7. void draw()
8. {
9. pg.beginDraw();
10. pg.background(0,255,0);
11. pg.endDraw();
12. image(pg,0,0);
13. }
14. void mousePressed()
15. {
16. pg.resize(300,300);
17. println(pg.width);
18. }
I will appreciate any help !!!
Thanks.

How to draw on a NApplet..

[0 Replies]
- 02-Jun-2011 07:07 AM
- Forum: Contributed Library Questions
I tried to draw a rectangle over one of the NApplet in my processing sketch but it seems that whatever is drawn in parent PApplet comes below the NApplet.
How can I solve my problem?

My code is :
1. import napplet.*;
2. NAppletManager nappletManager;
3. void setup() {
4. size(500, 500,P2D);
7. nappletManager = new NAppletManager(this);
8. nappletManager.createEmbeddedNApplet("MouseFollow", 25, 200);
9. // nappletManager.createNApplet("MouseFollow", 275, 200);
10. }
11. void draw() {
12. background(50);
13. stroke(255);
14. fill(255);
15. // hint(DISABLE_DEPTH_TEST);
16. rect(30,230,50,500);
17. }
18. public class MouseFollow extends NApplet {
20. int x, y;
22. void setup() {
23. size(200, 200);
24. x = width/2;
25. y = height/2;
26. }
28. void draw() {
29. if (focused) {
30. x = (7*x + mouseX)/8;
31. y = (7*y + mouseY)/8;
32. }
34. background(0);
36. stroke(255);
37. fill(150);
38. ellipse(x, y, 50, 50);
39. }
}
Please Help!!!

register more than one TuioClient in a processing sketch.

[0 Replies]
- 31-May-2011 03:03 AM
- Forum: Contributed Library Questions
I would like to divide my sketch into some variable parts (say 4) and on touch on any of the region a different activity should be performed for example in one of them ellipse will be drawn in another one rectangle or some more complicated task such as yellowtail.

If I register more than one client than one client then an error occurs : "cann't connect to tuio client"

Can anyone tell how to do this?

java.lang.RuntimeException: Too many calls to pushMatrix() !!

[1 Reply]
- 29-May-2011 10:44 PM
- Forum: Contributed Library Questions
Hello All,

I am using NApplet library in my processing sketch.But when I copied my another application into a NApplet following exception occured:

java.lang.RuntimeException: Too many calls to pushMatrix().
at processing.core.PGraphics2D.pushMatrix(Unknown Source)
at processing.core.PApplet.pushMatrix(Unknown Source)
at napplet.NAppletManager.draw(Unknown Source)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
at processing.core.PApplet.handleDraw(Unknown Source)
at processing.core.PApplet.run(Unknown Source)
at java.lang.Thread.run(Thread.java:619)

Now to adjust the depth of pushmatrix I copied folllowing code from http://wiki.processing.org/w/Matrix_stack site :

// adjust this value to whatever depth is actually necessary public final int STACK_DEPTH = 10000; public float[][] matrixStack = new float[STACK_DEPTH][6]; // this version will override the built-in version pushMatrix function public void pushMatrix() { println("hello"); if (matrixStackDepth == 10000) { println("exception"); throw new RuntimeException("too many calls to pushMatrix()"); } this.g.getMatrix().get(matrixStack[matrixStackDepth]); matrixStackDepth++; } // this version will override the built-in version popMatrix function public void popMatrix() { if (matrixStackDepth == 0) { throw new RuntimeException("too many calls to popMatrix()" + "(or too few to pushMatrix)"); } matrixStackDepth--; PMatrix2D m = new PMatrix2D(); m.set(matrixStack[matrixStackDepth]); this.g.setMatrix(m); }

again following exception is thrown :

java.lang.NullPointerException
at sketch_may28a.pushMatrix(sketch_may28a.java:275)
at napplet.NAppletManager.draw(Unknown Source)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
at processing.core.PApplet.handleDraw(Unknown Source)
at processing.core.PApplet.run(Unknown Source)
at java.lang.Thread.run(Thread.java:619)

Can anyone there please help solve this issue??

Thanks in advance

Problem with NApplet ..

[0 Replies]
- 27-May-2011 06:23 AM
- Forum: Contributed Library Questions
I want to run my processing sketch into another sketch.I used NApplet for that.But when I pasted my code in the NApplet following exception occured :

java.lang.RuntimeException: Too many calls to pushMatrix().
    at processing.core.PGraphics2D.pushMatrix(Unknown Source)
    at processing.core.PApplet.pushMatrix(Unknown Source)
    at napplet.NAppletManager.draw(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
    at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

and the code is :
1. import napplet.*;
2. NAppletManager nappletManager;
3. int App_status;
4. String sketch;
5. void setup()
6. {
7. size(500, 500,P2D);
8. App_status =1;
9. sketch = "MouseFollow";
10. nappletManager = new NAppletManager(this);
11. }
12. void draw()
13. {
14. background(50);
15. stroke(255);
16. fill(255);
17. if(App_status ==1)
18. sketch = "MouseFollow";
19. else
20. sketch = "try_app";
23. }
24. void mousePressed()
25. {
26. if(App_status ==1)
27. App_status =2;
28. else
29. App_status =1;
30. nappletManager.createNApplet(sketch, 25, 200);
31. }
32. public class MouseFollow extends NApplet
33. {
34. import TUIO.*;
35. int num = 200; //no of worms..
36. float r;
37. TuioProcessing tuioClient;
38. worm[] worms = new worm[num];
39. float X1,Y1 ;
40. PImage bg;
41. boolean touchDown=false,touchRemove=false,init=true,flag;
42. PImage img;
43. int q =1000;
44. void setup()
45. {
46. size(screen.width,screen.height);
47. smooth();
48. img = loadImage("6.jpg");
49. img.resize(width,height);
51. frameRate(60);
52. background(img);
53. for(int i=0;i<worms.length;i++)
54. {
55. worms[i] = new worm(new PVector(random(0,width),random(0,height)),color(random(0,255),random(0,255),random(0,255)));
56. }
57. tuioClient = new TuioProcessing(this);
58. frameRate(60);
59. }
60. void draw()
61. {
62. noStroke();
63. background(img);
65. Vector tuioCurList = tuioClient.getTuioCursors();
66. float X=0,Y=0;
67. if(tuioCurList.size() ==0)
68. {
69. touchDown =false;
70. for(int j=0 ; j<worms.length ; j++)
71. {
72. worms[j].forces(1,1,true);
73. worms[j].display();
74. }
75. }
76. else
77. {
78. for(int j=0 ; j<worms.length ; j++)
79. {
80. worms[j].processed = false;
81. for(int i=0 ; i<tuioCurList.size() ;i++)
82. {
83. touchDown = true;
84. TuioCursor tcur = (TuioCursor)tuioCurList.elementAt(i);
85. X = tcur.getScreenX(width);
86. Y = tcur.getScreenY(height);
87. boolean done =false;
88. float mdist = dist(X, Y, worms[j].loc.x, worms[j].loc.y);
89. if (mdist < 100)
90. {
91. worms[j].forces(X,Y,true);
92. worms[j].processed = true;
93. break;
94. }
95. }
96. }
97. for(int j=0 ; j<worms.length ; j++)
98. {
99. if(worms[j].processed == false)
100. worms[j].forces(X,Y,false);
101. worms[j].display();
102. }
103. }
105. }
106. class worm
107. {
108. PVector loc;
109. PVector preLoc,vec;
110. PVector acc,vel;
111. int wcol;
112. int velocityLim =15;
113. float angle,tv;
114. float speed =.6;
115. boolean processed =false;
116. int walpha ;
117. int wsize;
119. worm(PVector _loc,int _col )
120. {
121. loc = _loc.get();
122. preLoc = new PVector(loc.x-6,loc.y-6);
123. vel = new PVector(0,0);
124. acc = new PVector(0,0);
125. int j = (int)random(0,4);
126. if(j ==1)
127. _col = color(5,26,85);
128. else if(j ==2)
129. _col = color(211,55,131);
130. else
131. _col = color(241,250,13);
132. wcol = _col;
134. walpha = 255;//(int)random(150,255);
135. wsize = (int) random(5,7);
136. angle = random(0,2*PI);
137. }
138. void display()
139. {
140. stroke(255);
141. PVector pre=new PVector();
142. pre.x = preLoc.x;
143. pre.y = preLoc.y;
144. PVector curr = new PVector(loc.x,loc.y);
145. float slope = atan2((loc.y-preLoc.y),(loc.x-preLoc.x));
146. for (int i = 1; i < wsize; i++)
147. {
148. strokeWeight(sq(wsize - i) / (wsize-2));
150. stroke(wcol,walpha);
151. line(curr.x,curr.y,pre.x,pre.y);
152. curr.x = pre.x;
153. curr.y = pre.y;
154. slope -=radians(tv+1);
155. pre.x = pre.x -5* cos(slope);
156. pre.y = pre.y -5* sin(slope);
157. }
158. }
159. void bounds()
160. {
161. if(loc.y>height || loc.y<0)
162. r = random(-3,-1);
163. if(loc.x>width || loc.x<0)
164. r = random(-3,-1);
165. }
166. void forces(float tx,float ty,boolean attract)
167. {
168. flag =false;
169. float theta = atan2((loc.y-ty),(loc.x-tx));
170. preLoc.x = loc.x;
171. preLoc.y = loc.y;
172. if(touchDown)
173. {
174. if(attract ==true)
175. {
176. flag=true;
177. loc.x = loc.x-10*cos(theta);
178. loc.y = loc.y-10*sin(theta);
179. }
180. }
181. if(flag == false)
182. {
183. if(tv >=1.5)
184. tv=0;
185. tv += 0.3 * (random(10) - random(10)) / 10.0;
186. // tv += 0.5*random(2);
187. angle += tv;
188. loc.x+=speed;
189. loc.y+=speed;
190. loc.x += 10*cos(radians(angle));
191. loc.y += 10*sin(radians(angle));
192. //boundory check...
193. if(loc.x<0 )
194. {
195. loc.x = width-20;
196. preLoc.x = width-16;
197. }
198. else if(loc.x >width)
199. {
200. loc.x =20;
201. preLoc.x = 16;
202. }
203. else if(loc.y<0)
204. {
205. loc.y = height-20;
206. preLoc.y =height-16;
207. }
208. else if(loc.y >width)
209. {
210. loc.y =20;
211. preLoc.y = 16;
212. }
213. }
214. }
215. }
216. // called when an object is added to the scene
217. void addTuioObject(TuioObject tobj)
218. {
219. }
220. // called when an object is removed from the scene
221. void removeTuioObject(TuioObject tobj)
222. {
223. }
224. // called when an object is moved
225. void updateTuioObject (TuioObject tobj)
226. {
227. }
228. // called when a cursor is added to the scene
229. void addTuioCursor(TuioCursor tcur)
230. {
231. println("X,Y:"+tcur.getScreenX(width)+ " "+tcur.getScreenY(height));
232. touchDown=true;
233. touchRemove=false;
234. init = false;
235. X1 = tcur.getScreenX(width);
236. Y1 = tcur.getScreenY(height);
237. }
238. // called when a cursor is moved
239. void updateTuioCursor (TuioCursor tcur)
240. {
241. }
242. // called when a cursor is removed from the scene
243. void removeTuioCursor(TuioCursor tcur)
244. {
245. touchRemove =true;
246. Vector tuioCurList = tuioClient.getTuioCursors();
247. if(tuioCurList.size() ==0)
248. touchDown=false;
249. }
250. // called after each message bundle
251. // representing the end of an image frame
252. void refresh(TuioTime bundleTime) {
253. redraw();
254. }
255. }
256. public class try_app extends NApplet
257. {
259. int x, y;
261. void setup() {
262. size(200, 200);
263. x = width/2;
264. y = height/2;
265. }
267. void draw()
268. {
269. println("Mouse2");
270. background(255,0,0);
271. fill(0,255,0);
272. ellipse(mouseX,mouseY,10,10);
273. }
274. }

How to run another sketch in current display?

[3 Replies]
- 25-May-2011 02:04 AM
- Forum: Programming Questions
Hello,
I would like to run a sketch with some buttons and then on the click of a button another sketch should start running in the same display with a close button to go back to previous sketch .

I am not getting how to implement this.
Please help!!

Problem in implementing Tap and Hold .

[0 Replies]
- 24-May-2011 04:57 AM
- Forum: Contributed Library Questions
Hello,

I want to implement Tap and Hold in my processing app.To implement this I need to store the time when cursor was added and keep checking the difference of it from current system time till it exceeds the certain threshold value.

For this I took TuioTime when cursor was added and converted it into seconds.
1. float sTime = tcur.getTuioTime().getTotalMilliseconds()*0.001;
Also at the same time I retrieved System time too and converted it into seconds but both of these are quite different.
I am not getting why is this happening?

The complete code is as :
1. import TUIO.*; TuioProcessing tp; void setup() { size(700,700,P2D); tp = new TuioProcessing(this); } void draw() { } // called when an object is added to the scene void addTuioObject(TuioObject tobj) { } // called when an object is removed from the scene void removeTuioObject(TuioObject tobj) { } // called when an object is moved void updateTuioObject (TuioObject tobj) { } // called when a cursor is added to the scene void addTuioCursor(TuioCursor tcur) { float sTime = tcur.getTuioTime().getTotalMilliseconds()*0.001; //*0.000001; println("cursor added at:"+sTime); int h = hour(); int m = minute(); int s = second(); int systime = h*3600+m*60+s; println("systime : "+systime); } // called when a cursor is moved void updateTuioCursor (TuioCursor tcur) { } // called when a cursor is removed from the scene void removeTuioCursor(TuioCursor tcur) { } // called after each message bundle // representing the end of an image frame void refresh(TuioTime bundleTime) { redraw(); }
and the output on console window was :

cursor added at :3.9800003
systime : 62630

Please help.

Problem with boxwrap2d library.

[3 Replies]
- 19-May-2011 04:15 AM
- Forum: Contributed Library Questions
Hello folks,

I downloaded boxwrap2d library n stored it in library folder of processing sketch with folder name "boxwrap2d".

But when I tried to run the following code :
1. import org.jbox2d.dynamics.contacts.*;
2. import org.jbox2d.p5.*;
3. import org.jbox2d.dynamics.*;
4. import org.jbox2d.common.*;
5. import org.jbox2d.collision.*;
6. import org.jbox2d.dynamics.joints.*;
7. Physics physics;
8. void setup() {
9. size(640,480);
10. frameRate(60);
11. initScene();
12. }
13. void draw() {
14. background(0);
15. if (keyPressed) {
16. //Reset everything
17. physics.destroy();
18. initScene();
19. }
20. }
21. void initScene() {
22. physics = new Physics(this, width, height);
23. physics.setDensity(1.0f);
24. physics.createRect(300,200,340,300);
following exception occered:

Exception in thread "Animation Thread" java.lang.NoSuchMethodError: org.jbox2d.dynamics.DebugDraw: method <init>()V not found
    at org.jbox2d.testbed.ProcessingDebugDraw.<init>(ProcessingDebugDraw.java:62)
    at org.jbox2d.p5.Physics.<init>(Physics.java:173)
    at org.jbox2d.p5.Physics.<init>(Physics.java:152)
    at sketch_may19c.initScene(sketch_may19c.java:54)
    at sketch_may19c.setup(sketch_may19c.java:39)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

How can I resolve this issue.Please help me.
Thanks.

how to simulate pearl beads behaviour??

[0 Replies]
- 19-May-2011 12:28 AM
- Forum: Contributed Library Questions
I wish to develop 3rd app in following video :

http://www.youtube.com/watch?v=G1iSD6StpCA&feature=player_embedded
I have developed following code but it does not simulate the pearl behavior smoothly. Can anyone please suggest me how can I improve the code.
1. import TUIO.*; TuioProcessing tp; boolean gravity = true; ArrayList touchPoints; /* Particle count */ int particleCount = 10; PImage bk; PImage pearl; /* Particle array */ ArrayList particles ; void setup() { size(screen.width,screen.height); bk = loadImage("m1.jpg");//b11.jpg bk.resize(width,height); pearl = loadImage("p2.png");//p5 pearl.resize(13,13); smooth(); frameRate(30); tp = new TuioProcessing(this); particles = new ArrayList(); } void draw() { background(bk); for (int j=0; j<particles.size()-1; j++) { Particle particle = (Particle) particles.get(j); particle.flag =false; } Vector tuioCurList = tp.getTuioCursors(); float X,Y,lastX,lastY; for(int i=0 ; i<tuioCurList.size() ;i++) { TuioCursor tcur = (TuioCursor)tuioCurList.elementAt(i); Vector pointList = tcur.getPath(); if (pointList.size()<18) { TuioPoint start_point = (TuioPoint)pointList.firstElement();; TuioPoint end_point = (TuioPoint)pointList.elementAt(pointList.size()-1); X = start_point.getScreenX(width); Y = start_point.getScreenY(height); lastX = end_point.getScreenX(width); lastY = end_point.getScreenY(height); float angle = atan2(Y-lastY , X-lastX); for (int j=0; j<particles.size()-1; j++) { Particle particle = (Particle) particles.get(j); if(particle.id == tcur.getCursorID() ) { if( particle.timer <=0) particles.remove(j); else { particle.flag = true; particle.update2(angle); particle.draw(); } } } } } for (int j=0; j<particles.size(); j++) { Particle particle = (Particle) particles.get(j); if (particle.flag ==false) { if( particle.timer <=0) particles.remove(j); else { particle.update3(); particle.draw(); } } } } class Particle { /* the x and y are our coordinates for each particles */ float x,y; float id , Pangle; float vx,vy; boolean flag; int timer; /* Particle initialization. We define the beginning properties of each particle here. */ Particle(float X,float Y, float tid) { x = X; y = Y; id = tid; Pangle = 0; timer =(int)random(40,60); } [b]void update2(float angle) { // vx *= 0.99; // vy *= 0.99; timer -=1; vx -= 2* cos(angle); vy -= 2* sin(angle); x+=vx; y+=vy; Pangle = angle; } [/b] [b]void update3() { // vx *= 0.99; //vy *= 0.99; timer -=1; boundaryChk(); vx -= 2 * cos(Pangle); vy -= 2 * sin(Pangle); x+=vx; y+=vy; }[/b] void boundaryChk() { /* Border collisions */ if (x > width) { /* Reverse the velocity if towards wall */ if (abs(vx) == vx) vx *= -1.0; /* The particle is placed back at the wall */ x = width; } if (x < 1) { if (abs(vx) != vx) vx *= -1.0; x = 1; } if (y < 1) { if (abs(vy) != vy) vy *= -1.0; y = 1; } if (y > height) { if (abs(vy) == vy) vy *= -1.0; // vx *= 0.6; y = height; } } void draw() { image(pearl,int(x),int(y)); } } // called when an object is added to the scene void addTuioObject(TuioObject tobj) { } // called when an object is removed from the scene void removeTuioObject(TuioObject tobj) { } // called when an object is moved void updateTuioObject (TuioObject tobj) { } // called when a cursor is added to the scene void addTuioCursor(TuioCursor tcur) { for(int i =0;i<5;i++) [b]particles.add(new Particle( random(tcur.getScreenX(width)-20,tcur.getScreenX(width)+20),random(tcur.getScreenY(height)-15,tcur.getScreenY(height)+15) , tcur.getCursorID()) );[/b] } // called when a cursor is moved void updateTuioCursor (TuioCursor tcur) { for(int i =0;i<5;i++) [b] particles.add(new Particle( random(tcur.getScreenX(width)-5,tcur.getScreenX(width)+5),random(tcur.getScreenY(height)-10,tcur.getScreenY(height)), tcur.getCursorID() ) ); [/b] } // called when a cursor is removed from the scene void removeTuioCursor(TuioCursor tcur) { } // called after each message bundle // representing the end of an image frame void refresh(TuioTime bundleTime) { redraw(); }
Thanks.

How to resolve "java.net.ConnectException: Connection refused" exception??

[0 Replies]
- 04-May-2011 02:36 AM
- Forum: Contributed Library Questions
Hello,

I want to use google search api in my processing sketch.
I got following exception :

Something went wrong...
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:529)
    at java.net.Socket.connect(Socket.java:478)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
    at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
    at sun.net.www.http.HttpClient.New(HttpClient.java:306)
    at sun.net.www.http.HttpClient.New(HttpClient.java:323)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:860)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:801)
    at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:726)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1049)
    at sketch_may03a.makeQuery(sketch_may03a.java:67)
    at sketch_may03a.setup(sketch_may03a.java:43)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

   when tried to run following code:
1. import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.net.URL;
  import java.net.URLConnection;
  import java.net.URLEncoder;
  import org.json.JSONArray;      // JSON library from http://www.json.org/java/
  import org.json.JSONObject;
  
  // Put your website here
  private final String HTTP_REFERER = "http://www.google.com/";
  
  void setup()
  {
  size(700,700);
  makeQuery("questio verum");
  //makeQuery("info:http://frankmccown.blogspot.com/");
  //makeQuery("site:frankmccown.blogspot.com");
  }
  
  void makeQuery(String query) {
  
  System.out.println(" Querying for " + query);
  
  try
  {
     // Convert spaces to +, etc. to make a valid URL
     query = URLEncoder.encode(query, "UTF-8");
  // note: you can change the start index here.
     URL url = new URL("http://ajax.googleapis.com/ajax/services/search/web?start=0&rsz=large&v=1.0&q=" + query);
       println("hello before");
  
     URLConnection connection = url.openConnection();
      connection.addRequestProperty("Referer", HTTP_REFERER);
  
     // Get the JSON response
     String line;
     StringBuilder builder = new StringBuilder();
  //      println("hello");
     BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
     while((line = reader.readLine()) != null) {
      builder.append(line);
     }
  
     String response = builder.toString();
     JSONObject json = new JSONObject(response);
  
     System.out.println("Total results = " +
       json.getJSONObject("responseData").getJSONObject("cursor").getString("estimatedResultCount"));
  
     JSONArray ja = json.getJSONObject("responseData").getJSONArray("results");
  
     System.out.println(" Results:");
     for (int i = 0; i < ja.length(); i++) {
      System.out.print((i+1) + ". ");
      JSONObject j = ja.getJSONObject(i);
      System.out.println(j.getString("titleNoFormatting"));
      System.out.println(j.getString("url"));
     }
  }
  catch (Exception e) {
     System.err.println("Something went wrong...");
     e.printStackTrace();
  }
Can anyone please help me out how can I resolve this exception?

Thanks.

how to access internet through processing application?

[5 Replies]
- 29-Apr-2011 12:00 AM
- Forum: Programming Questions
Hii,

I want to create an application in processing that is connected to internet and then I should be capable of searching some photographs and videos on the internet through the application.
Can anyone please help me out how can I do this?

Thank You

Need Help on magnetic field simulation

[1 Reply]
- 31-Mar-2011 04:53 AM
- Forum: Programming Questions
Hello,

I want to develop an application to simulate magnetic field with 2 or 3 bar magnets.I read about magnetic field on wikipedia too but not getting how to program the magnetic field direction.
Can anyone please suggest me any tutorials or program so as to proceed further.

[Moderator's note: made a more descriptive subject line...]

change backgroud color of msafluid applicaion?

[2 Replies]
- 29-Mar-2011 12:02 AM
- Forum: Contributed Library Questions
Is there any way to change the background color of msafluid application ?

How to increase size of particle?

[14 Replies]
- 28-Mar-2011 11:03 PM
- Forum: Contributed Library Questions
Hiii,

I am implementing an application in processing in which I am using glDrawArrays function of openGL with mode as GL.GL_TRIANGLES.

for(int i=0; i<maxParticles; i++) { if(particles[i].alpha > 0) { particles[i].update(); particles[i].updateVertexArrays(i, posArray, colArray); } } gl.glEnableClientState(GL.GL_VERTEX_ARRAY); gl.glVertexPointer(2, GL.GL_FLOAT, 0, posArray); gl.glEnableClientState(GL.GL_COLOR_ARRAY); gl.glColorPointer(3, GL.GL_FLOAT, 0, colArray); // gl.glScalef(1.7,1.7,0.5); gl.glDrawArrays(GL.GL_TRIANGLES, 0, maxParticles * 2);

I want to increase the size of particles of the triangle.For this I tried to use glScalef function too but after using this particles are not rendered at mouseX and mouseY position,rather the position has been translated.
Can anyone please help me out.

Executable file?

[2 Replies]
- 28-Mar-2011 09:09 AM
- Forum: Integration and Hardware
Hi folks,

I need to compile my processing application in binary .I used export application feature,But problem is that to run the application i need to copy the entire application.windows folder.Is there any way so as to get one single file?

Need urgent help in geomerative library!!!

[0 Replies]
- 09-Mar-2011 05:09 AM
- Forum: Contributed Library Questions
Hi all,

I have made many applications in processing, But I am a newbie to use geomerative library.
I want to make following application:

Draw a string along a semicircle and move it.I think I can do this with the help of geomerative library.But not getting how to do this.

Can anyone there please help me.
Thanks

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