I still haven't found the thread

create really thin object and set transparency to some percent. I think that may work

I use it like this


      //fps.. like 25
     int sleepTime = 1000 / fps;
     long first = System.currentTimeMillis();
     long second = 0;
     long actualSleepTime = 0;
     while (bRender) {
        //do some stuff in world here
        buffer.clear();
        world.renderScene(buffer);
        world.draw(buffer);
        buffer.update();
        buffer.displayGLOnly();
        second = System.currentTimeMillis();
        actualSleepTime = sleepTime - (second - first);
        if (actualSleepTime < 0) {
           actualSleepTime = 0;
        }
        try {
           Thread.sleep(actualSleepTime);
        }
        catch (InterruptedException ie) {}
        first=second;
     }




Hy.

I've got this far that now I know that first somehow I call Object3D.translate(Infinity,,).

X/0 is Infinity... anything else?

Use sleep between renderings. I do rendering 25 times per minute and it only uses 2,3 percent of CPU (opengl mode)

Thanks Mizuki.

For now i check every translation for NaN value and replace it with 0. Hope it will work!

The problem also is that this happen time to time, like once twice per day. So it is even harder for me to debug it. The thing i'm working is some live warehouse visualisation which reads data from database and interpolates object movements in real time as accurate as it can.

Hello again

Since i have NaN in translationMatrix. I think I probably put it inside with Method Object3D.translate.. since I never manipulate non of the Matrixes directlly. Can anyone help me and tell me what kind of calculations returns NaN value. I think X/0 does.. anything else? I checked my code, X/0 could not happen.

I can't really do much of a debug since I don't have a source, but i think that probably transformed center is calculated with those 3 matrixes. One has a Nan in it and I'm not shure how it got there! Any Ideas?

Regards

Hy!

I'm transacting, adding, removing.. objects in the World and sometimes I get value NaN from getTransformedCenter().x method... Why does this happen? Does anyone know what am I doing wrong?

Kind Regards, Ivan

http://www.jpct.net/forum/viewtopic.php?t=59&start=0&postdays=0&postorder=asc&highlight=scale

is this still the only solution :?:

Hello

Is it possible to scale object only by one koordinate x,y,z

Thanks

Hello

Can you tell me what is actually cloned with call cloneObject?

Octree is??

Thank you Egon!

What a silly mistake  :oops:  :oops:

And i was reducing nr. of threads in my application, using only synchronized collections, synchronizing iterators and in the end it was so simple.   :oops:  :oops: . And i found the place where i was changing SimpleVector.

Thanks again!!

Hello

I store few SimpleVectors in collection class Hashtable like that

protected Hashtable places = new Hashtable();

  public void updateKoordinates()
  {
        SimpleVector place = part.getOrigin();
        place.add(new SimpleVector(-50, -55, 80));
        places.put("0001", place);
        place = part.getOrigin();
        place.add(new SimpleVector(-50, -55, -420));
        places.put("0002", place);
        place = part.getOrigin();
        place.add(new SimpleVector( 50, -55, -420));
        places.put("0003", place);
        place = part.getOrigin();
        place.add(new SimpleVector( 50, -55, 80));
        places.put("0004", place);
   }

  public SimpleVector placePos(String placeNr)
  {
     System.out.println(places.get(placeNr));
     return (SimpleVector)places.get(placeNr);
  }    



The method updateKoordinates() is called only once.
After some time of runing my application and calling method placePos(placeNr)... SimpleVector cordinates are changed. Anyone has idea what could cause that??

Thanks

Hi Egon.

Tnx 4 your help, I wasn't working for a week on that. So I apologise for late respond.

Here is original post


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If i have two 3d objects (actually 4, I'll get to that latter)

First one O1, is just one simple object.

While second one is actually 3 simple objects (Part1, Part2, Part3) which are linked by parent to child connection, like this

     Part1.setOrigin(origin);
     Part2.setOrigin(origin);
     Part3.setOrigin(origin);
     Part1.addChild(Part2);
     Part2.addChild(Part3);
     world.addObject(Part1);
     world.addObject(Part2);
     world.addObject(Part3);


So I have three level parent to child connection deepth here. I Hope i'm not doing something wrong here.

Than, when I rotate Part1 for 180 degrees, all 3 parts (1,2,3) are rotateted , that is correct. Than I rotate an O1 object also by 180 degrees.

And than when i try to move those objects, my expectations are that if I move them like this:


  Part2.translate(1,0,0)
  O1.translate(1,0,0


They should move in same direction. But they don't. O1 is moved by absolute (world) axis. While Part(s) are moved by they own axis. In that specific case, they move just the opposite way <--->.


Best regards and by the way I really love your engine, it helped me so much this far.
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