I am new to processing and programming in general, so forgive if something silly comes out of me!

I've got a sketch importing points coordinates from .csv file and plotting them in P3D mode.

It kind of works, but I know there are some major issues with code. I'd like it to be a bit more efficient on GPU side. I have read a few threads about VOBs and GLGraphics library, and them being helpful in such situations:) However, I have no idea where to start to implement that in my sketch, and whether it is suitable in P3D mode.

Thats what i got so far, any help much appreciated:

2. 
   
3.  
4.  //*** GLOBAL VARIABLES ***
5.  //-----------------------------------------------------------------------------*/
6. ArrayList pointList;                   // arraylist to store the points in
7.  
8. 
   
9.  /*** GLOBAL INIT ***
10.  -----------------------------------------------------------------------------*/
11. void setup(){
12.  
13.   //-------------------------------- GENERAL
14.   size(1600,900,P3D);
15.   background(0);
16.  
17.   //-------------------------------- POINTS
18.   pointList = new ArrayList();    // instantiate an ArrayList
19.   importTextFile();               // call our custom function
20.  
21. }
22.  
23. /*-----------------------------------------------------------------------------
24.  *** MAIN PROGRAM LOOP ***
25.  -----------------------------------------------------------------------------*/
26. void draw(){
27.  
28.   //-------------------------------- GENERAL
29.   background(0);  
30.   stroke(210);
31.   fill(210,90);
32.   
33.   //-------------------------------- CAMERA TEST
34.   camera(mouseX, height/2, (height/2) / tan(PI/6), mouseX, height/2, 0, 0, 1, 0);
35.  
36.   //-------------------------------- VISUALIZE THE POINT SET
37.   for(int i = 0; i < pointList.size(); ++i){        
38.     PVector V = (PVector) pointList.get(i);
39.     point(V.x,V.y,V.z);
40.   }
41.  
42. }
43.  
44. /*-----------------------------------------------------------------------------
45.  *** CUSTOM IMPORT FUNCTION ***
46.  -----------------------------------------------------------------------------*/
47.  
48. void importTextFile(){   
49.   String[] strLines = loadStrings("primetest02.csv"); // the name and extension of the file to import!
50.   for(int i = 0; i < strLines.length; ++i){
51.     String[] arrTokens = split(strLines[i], ';');       // use the split array with character to isolate each component
52.     float xx = float(arrTokens[0]) * 100;                     // cast string value to a float values!
53.     float yy = float(arrTokens[1]) * 100;                     // cast string value to a float values!
54.     float zz = float(arrTokens[2]) * 100;                     // cast string value to a float values!
55.     pointList.add( new PVector(xx,yy,zz) );             // add values to a new array slot
56.   }
57. }

I am a beginner with processing and programming in general, so patience:)

I come from an architecture background. At the moment I am doing a project that involves 3d scanning. So, in some future what I would like to achieve with processing is to load a scan, render out point clouds and manipulate it interactively.

Right now, I am trying to work out the first step, to load my scan into Processing. Originally scanned with Faro scanner, further manipulated in Pointools. So, my output files could be .psi .pst .pod .xyz a few others. Are the libraries that would allow me to load this data and how would I then go about rendering it?

I know those are very generalised questions and I am doing a lot digging around the net, but at the moment struggle to get on the right path, so any help would be appreciated!