Hi,

Is it possible to read a movie located on a web server using GSVideo or if it's plan to be ?
I've looked at the GSMovie source code and it seems it's not implemented yet but will be in a future release.
Could you confirm this Andres, or is it already possible ?

The main goal is to read .mov files from a processing applets.

Regards,
O

Hi,

HI, 

Hi, i'm trying to use wordookie with processing 1.5 and it seems to be broken.

Hi, just read the documentation but not sure how that works ?

Hi fellows,

I know this topic is more related to java than processing but i think it might be useful to this community.

How to remove duplicates from an array in a correct manner ?

I've googled a bit and found some interesting threads on stackoverflow but i finally became confuse.
What i mean by correct manner, is just the less memory consuming and fast computation.
Does that need a function that would convert(by checking and adding values) an Array into a Set ?
I'm sure some java gurus have already did that many times.

Regards.

Hi,

I'm learning JOGL and searching the web confused me a bit.
Is processing using this version or this one ?
Is there any diff and if, which one i should use ?
Sorry it's a dumb question but i'm just confused.

Hi,

Well that's more a java question rather than a processing one.
But i just realize that's something i've never figured out.

My question is what's the difference between:

1. String s = "processing";

And :

1. String s = new String("processing");

I think that does make more sense when using more String objects.

As far as i understood, String variables are composite, instantiate objects from String class.
The difference would be that using String constructor create a new Object.
So :

1. String s1 = "processing";
2. String s2 = "2010";

Would create one String object and :

1. String s1 = new String("processing");
2. String s2 = new String("2010");

Would create two String objects ?

If someone could clarify this (What's the diff ? What for ?...).
Thanks.

Hi,

I'm currently trying to import a very simple .obj file created in maya.
It's a simple cylinder without any texture.
When i try to run the following code :

1. import processing.opengl.*;
2. import saito.objloader.*;
3. 
   
4. OBJModel model3D1;
5. float rotX, rotY, zoom;
6. 
   
7. void setup() {
8.       size(400, 200, P3D);
9. 
   
10.       addMouseWheelListener(new java.awt.event.MouseWheelListener() {
11.             public void mouseWheelMoved(java.awt.event.MouseWheelEvent evt) {
12.                   mouseWheel(evt.getWheelRotation());
13.             }
14.       }
15.       );
16. 
    
17.       model3D1 = new OBJModel(this, "cylindre.obj");
18.       model3D1.disableTexture();
19.       model3D1.scale(80);
20.       model3D1.translateToCenter();
21.       model3D1.disableDebug();
22.  
23.       stroke(0);
24.       noStroke();
25.       noFill();
26.       zoom=1;
27. }
28. 
    
29. void draw() {
30.       background(255);
31.       lights();
32.       pushMatrix();
33.             translate(width/2, height/2, 0);
34.             rotateX(rotY);
35.             rotateY(rotX);
36.             scale(zoom);
37.             model3D1.draw();
38.       popMatrix();
39. }
40. 
    
41. void mouseDragged() {
42.       rotX += (mouseX - pmouseX) * 0.01;
43.       rotY -= (mouseY - pmouseY) * 0.01;
44. }
45. 
    
46. void mouseWheel(int delta) {
47.       if (delta<0) {
48.             zoom-=0.1;
49.       }
50.       else {
51.             zoom+=0.1;
52.      }
53. }

I got that error :

java.lang.ArrayIndexOutOfBoundsException: 2
    at saito.objloader.OBJModel.parseOBJ(OBJModel.java:864)
    at saito.objloader.OBJModel.load(OBJModel.java:577)
    at saito.objloader.OBJModel.<init>(OBJModel.java:86)
    at Cylinder3D.setup(Cylinder3D.java:41)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

It seems that the error is thrown by the line :

1. model3D1 = new OBJModel(this, "cylindre.obj");

After a quick look at the library sources, it seems that the constructor call load() method which itself call parseOBJ() which parse the .obj lines data. The same program works with other .obj file but i can't figure why this one throw that error. Is that because it's missing normals (vn) ?

Here's the .obj file.

Many Thanks.

Hi,

I think it's pretty simple but my brain is foggy today.
What i'd like is to draw the three circles on screen blending in each other using the ADD mode.
Actually i switched this sketch to noLoop() in order to show what i want to visually achieve.
If you comment noLoop() function you'll see the behavior i'm trying to achieve, but it isn't visually correct (each frame add the content on the top of the previous one). I'd like to keep the halo transparency.

I think i need to add something in the render mothod of the haloClass (smth like pg.background(0)).
But if i add pg.background(0) i don't get the transparency.
I tried width pg.rect(0, 0, width, height) filling it with a low alpha buy doesn't look like so nice.

Sorry if this confusing, here's the source :

1. ArrayList hcs = new ArrayList<haloCircle>();
2. void setup() {
3.   size(400, 400);
4.   smooth();
5.   imageMode(CENTER);
6.   hcs.add(new haloCircle(180, new PVector(20, 40)));
7.   hcs.add(new haloCircle(200, new PVector(0, 0)));
8.   hcs.add(new haloCircle(100, new PVector(0, 0)));
9.   noLoop();
10. }
11. void draw() {
12.   background(0);
13.   translate(width/2, height/2);
14.   for (int i = hcs.size() - 1; i >= 0; i--) {
15.     haloCircle hc = (haloCircle)hcs.get(i);
16.     hc.update();
17.     hc.render();
18.     if(hc.isFinished())hcs.remove(i);
19.   }
20. }
21. class haloCircle {
22.   PGraphics pg;
23.   PVector pos;
24.   float radius;
25.   float haloWidth;
26.   boolean finished;
27.   haloCircle()
28.   {
29.     pg = createGraphics(width, height, JAVA2D);
30.     pos = new PVector(0, 0);
31.     radius = 80;
32.     haloWidth = 40;
33.     finished = false;
34.   }
35.   haloCircle(float w_, PVector pos_)
36.   {
37.     pg = createGraphics(width, height, JAVA2D);
38.     pos = pos_;
39.     radius = 80;
40.     haloWidth = 40;
41.     radius = w_ / 2;
42.     finished = false;
43.   }
44.   void update()
45.   {
46.     if (radius > 0) {
47.       radius--;
48.     }
49.     else {
50.       finished = true;
51.     }
52.   }
53.   void render()
54.   {
55.     pg.beginDraw();
56.     // There's must be some kind of magic there
57.     pg.translate(pg.width/2, pg.height/2);
58.     pg.smooth();
59.     pg.noFill();
60.     for (int i = 0; i < haloWidth; i++) {
61.       pg.stroke(255, haloWidth - i);
62.       pg.ellipse(pos.x, pos.y, (radius * 2) + i, (radius * 2) + i);
63.     }
64.     pg.endDraw();
65.     image(pg, 0, 0);
66.   }
67.   boolean isFinished()
68.   {
69.     return finished;
70.   }
71. }

Hi,

• Actually starting a new project which involves system's heavy computations like physics, mapping, shading, advanced opengl, sound etc... we're wondering if there any java/processing libraries to span all these computations over several (networked) computers ?

• Is this any better to use one computer for rendering, one for physics, one for sound and make them communicate with the network library or is it possible to have one main machine that will use all the available ressources (others cpu, memory, etc) ?

• Even if it seems a bit confusing for us now, do you think OpenCL could have any help in that situation ?

We are thinking of something like boygrouping in vvvv.

That's a general question because we are just in draft step.
So if any of you guys – and i'm sure some are – have some experience in this area, please let us know.

Every advice is welcome, even the simplest one.
Regards,
lm

K I'll try to explain things not as confused as i am.

I've wrote two littles functions that draw a basic square grid.
One function choose the coordinates system (ala processing either CENTER or CORNER).
And the other one just set the vertices in space.

What I'd like is reuse this code in several processing sketches.

Later, I'd like to write a custom library  but for now i can't install eclipse, so i thought maybe using a java file would be the solution ? And then add that file to sketches.

I'm not sure how to do that what would be your suggestion ?
I hope i'm not confusing if so just let me know.

O.

Hi,

Just starting a new sketch, something very simple and i don't understand what's going on.

Here's The code:

1. int numIte = 4;
2. float offset;
3. 
   
4. void setup() {
5.   size(200, 200);
6.   smooth();
7.   noStroke();
8.   background(255);
9.   noLoop();
10.   offset = width/numIte;
11. }
12. void draw() {
13.   for (int i=0; i < numIte; i++) {
14.     noStroke();
15.     ellipse(offset*i, height/2, 25, 25);
16.     //println("i :" + i + ", " +(offset)*i);
17.   }
18. }

Actually, on my screen i only see 3 red ellipse. The one that sould be located at (0, height/2) isn't draw ?
My current machine is very limited (only 8mo video memory on board, yeah i know...) so i had that kind of strange trouble before.

So is it me, the machine or a processing bug ?
Regards,
O.

Hi,

Currently testing and trying to figure memory manadgement in processing (and btw java) i'm wondering if is there are tools or libraries out there in order to monitor memory usage in processing ?

As far as i understood the JVM got some allocated memory once started (which can be see using Runtime totalMemory() method). So i do assume processing work on the same basis. So my first question :

Is it possible to know how much memory is allocated to processing sketch only (that means not processing sketch + processing IDE) ?

I found another method from the Runtime class which is freeMemory() which return JVM freeMemory().

So substract this value from the total memory before and after having instanciated objects should allow to measure memory consumed ?

I'm wondering too, which kind of units are returned by freeMemory() and totalMemory() ?

Is there any graphical tool or log manadgement to enable deep debugging or monitoring within processing ?

I apologize for the poor english and certainly bad appreciating post but i'm really new to all this with java.
Best regards,
O.

Hi,

I want to achieve something that is simple: Read colors from an image and sort them in an array.
Colors should be sorted from most occurency found to less.
The result should be a string array, each element is a color hex value.

I know that have must be done thousand times but i'm just having fun trying to find an efficient algorithm (so please don't post full source code as a response ;)). That's where i need some help.

Actually, here's my process :

• Load image in memory (i.e loadImage).
  
• Access image pixels color value (i.e loadPixels()).
• Loop through all image's pixels.
• If the pixel colors is not found in the colors' array add it the colors' array (so it's size should be dynamically set -> Vectors or ArrayList ?). Else (If the pixels colors is found in the array) increment a number that represent the color balance count (in order to sort the array later).

So i though my array should look like :

0 | ColorValue#1 | NbrOccurences#2
1 | ColorValue#2 | NbrOccurences#2

I think the ColorValue#n should be a String in the form XXXXXX (hex color value) and the NbrOccurences#n could be an int which is equal to the number of pixels that.

So my question is :
What kind of data should i use ? A class for ColorValue#n | NbrOccurences#n ? ArrayList ? 2-dimensional Array (and set NbreOccurences as a String ?) What kind of optimisation could be use to speed up that stuff ?

If i suceed in something efficient, i might try to make a tool from that idea.
So any help appreciated.

Regards.

Hi,

I'm actually fooling around with HTTP protocol and GET/POST requests.

Here's the situation :

• I'm working in a windows corporate domain environment.
• From what i guessed, the network connection pass trough a proxy.
• This proxy is configured via a proxy configuration script.
• And most important, use ntlm authentification scheme.

So far, i think the net library brough by processing can handle such protocols.
So i had a look to apache's HttpComponents library.
As far as i understood, HttpComponents doesn't support ntlm authentification for legal reason.
And they suggest to use jcifs library as an external ntlm engine.

Googleing the ntlm protocol, i read that's supported since Java 1.4 so i'm not sure HttpComponents or jcifs are needed.

So anyone got some clue or experience with such configuration ?
Any help much appreciated !

Hi,

I'm working on a program which is reading values from a csv file.
Basically the csv file looks like x, y, z.

I'm extracting the values x and y in a function i'm calling during setup() to fill Vectors (or arrays) in order to load these values in memory rather than reading them from hard drive.

That's my first question : Doest that make any sense in term of performance.

The file contains 256 entry, each entry contain x, y, z:
Where x is a time value in ms and y a voltage value.
x start at 0.0s and end at 1.0s.
So the exactly lenght of the recorded signal is 1 second.

Now my question is: how to read the file at the same rate so that each cycle is during exactly 1sec ?

It seems that processing run at 60fps if no frameRate function is called. 60fps means i can only read 60 values and each draw() loop run every 16,6ms. If i call frameRate(120) i can slow down it to 8,3ms. It's the higher rate which seems stable. So is there any solution to read 256 values from a file or an object in memory in one second ?

I may be confused myself a bit but any  help is apprecied.

Regards,
S