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Points leaving trail in 3D

[2 Replies]
- 02-Oct-2013 03:52 PM
- Forum: Programming Questions
Hey guys I'm very new to processing, I just sketched some points moving in 3D I want them to leave a trail behind but I'm not sure how to code it.

I think this is the basic concept:

I need to get all PVector of the points moving then put them in Arraylist.

Then from the Array list of PVector I can loop to draw points.

Later on I want to use the points as a attractor to other agents.

This sounds easy but very hard as I only have limited amount of processing knowledge.

Someone please help!

Thanks in advance.
2. import peasy.*;
3. ArrayList agentCollection;
5. PeasyCam KCam;
6. Box box = new Box();
8. PVector location;
9. PVector speed;
12. void setup(){
13. size(600,600,P3D);
14. smooth();
15. KCam = new PeasyCam(this,800);
17. agentCollection = new ArrayList();
20. for(int i = 0; i < 20 ; i++){
21. speed = new PVector(random(-1,1),random(-1,1),random(-1,1));
22. agentCollection.add(new agent(speed));
23. }
24. }
26. void draw(){
27. background(255);
28. box.display();
30. for(int i = 0; i < agentCollection.size(); i++){
31. agent thisagent = (agent) agentCollection.get(i);
32. thisagent.run();
33. }
34. }
37. class agent{
39. //Global varaiables
40. PVector location = new PVector();
41. PVector speed;
44. //constructor
46. agent(PVector speed){
47. this.speed = speed;
49. }
51. void run(){
52. update();
53. display();
54. }
57. void update(){
58. location.add(speed);
59. }
61. void display(){
62. stroke(0);
63. strokeWeight(10);
64. fill(0);
65. point(location.x,location.y,location.z);
67. }
68. }
71. class Box {
72. int boxsize = 300;
74. void display() {
75. strokeWeight(1);
76. stroke(0);
77. noFill();
78. box(boxsize);
79. }
80. }

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