Can anyone tell me how I might be able to get the content between two specific tags, for example:

<name>Radiohead</name>

How would i search an xml file for the <name> tag and retrieve the string"radiohead"? is there a function in XMLElement?

Any help much appreciated.

-Matt

I'm getting to grips with jbox2d in processing and there's one this that's bugging me.

How, once i've created a new body, do I reference that specific body to remove it later on?  I know you can read through the list and test for certain things but that doesn't really help.  Can you not give them a specific name or something when you create it?

Any help much appreciated.

Matt

I hope someone can help me on this project! Its giving me a headache!

I understand that the nature of processing means that if you move the camera position, you must redraw everything. 

My problem is that I am generating a line that extends and occasionally splits off and changes course and i want the camera to always slowly be zooming out so that the content always fits the window. But ofcourse, when i move the camera, it messes up what the drawing.. 

Here's my sketch so far, any help would be greatly appreciated!

2. import processing.opengl.*;
3. 
   
4. Spiral[] mySpirals;
5. 
   
6. int xpos = 0;
7. int ypos = 0;
8. int spiralcount = 0;
9. int direction = 0;
10. 
    
11. 
    
12. void setup() {
13.   size(800,600,OPENGL);
14.   background(255);
15.   smooth();
16.   
17.   xpos = width/2;
18.   ypos = height;
19.   
20.   mySpirals = new Spiral[10];
21.   
22.   for(int i = 0; i < 10; i++) 
23.   {
24.     mySpirals[i] = new Spiral();   
25. 
    
26.   }
27.   
28.   
29. }
30. 
    
31. 
    
32. void draw(){
33. 
    
34.   noStroke();
35.   fill(0);
36.  ellipse(xpos, ypos, 16, 16); 
37.  ypos -= 1;
38.  
39.  for(int i = 0; i < 10; i++) 
40.   {
41.  if(mySpirals[i].done==true)
42.    mySpirals[i].drawit();
43.    
44.   }
45.  
46.  }
47.  
48. 
    
49.  void mouseClicked() {
50.    
51.    mySpirals[spiralcount].ypostart = ypos;
52.    mySpirals[spiralcount].done=true;
53.    spiralcount++;
54.    if(direction==0){direction=1;}else{direction=0;}
55.   }
56.   
57.   
58. class Spiral{
59. 
    
60. float r = 60;
61. float theta = 0;
62. float lt = 16;
63. float cize = random(0.2, 4);
64. float direction = int(random(0,2));
65. 
    
66. 
    
67. 
    
68. int ypostart = 0;
69. boolean done = false;
70. 
    
71. 
    
72. 
    
73. void drawit() {  
74.   //println(direction);
75.   if(lt>0){
76.   // Polar to Cartesian conversion
77.   float x = 0;
78.   if(direction==1){
79.    x = r * cos(theta)*cize;} //change to a minus + add60*cizeinstead of minus below to flip
80.   if(direction==0){
81.    x = r * -cos(theta)*cize;}
82.   
83.   float y = r * sin(theta)*cize;
84. 
    
85.   // Draw an ellipse at x,y
86.   noStroke();
87.   fill(0);
88.   if(direction==1){
89.   ellipse(x+width/2-(60*cize), y+ypostart, lt, lt);}
90.   if(direction==0){
91.   ellipse(x+width/2+(60*cize), y+ypostart, lt, lt);}
92. 
    
93.   // Decrement the angle
94.   theta -= 0.02;
95.   // Deccrement the radius
96.   r -= 0.1;
97.   //Decrement the thickness
98.   lt -= 0.03;
99.   //println(r);
100.   }else{
101.   
102.  done = true;
103.   }
104. }
105. 
     
106. }