Hi Egon,

I'm writing a rapport about my simulator and I'm writing the chapter about jPCT structure... in your notes you draw, using a solid line, that an Object3D has to have a texture.... but, I've used objs in my applet in which I've applied just simple material without textures, so I'm not pretty sure to understand this necessary relation.....

Bye and thanks

Hi Egon,

firstable thanks for your code . I'm not an expert of php so I need some explanation... The script stands in a stand-alone file, sucha as script.php? The statement dir("."); opens the current dir (if it is so I've to place the php script in to the textures dir). Using which class and method I can run the script from my applet? At the end, I've to pass the "running script method" as input for the getTextFile()? i.e:

BufferedReader in = getTextFile(runScript(script.php));

bye and thanks a lot for your help and patience :oops:

Using simply:

File dir_texture=new File("textures");

it doesn't work   . What do you exacty mean with: "You maybe have to set the codebase in the applet-tag"?

Let's try to consider the problem from another point of view... Basically my problem is that now I express an absolute path that points to the textures directory:



File dir_texture=new File("c:/programs/java_sdk/bin/textures");



so, if I've to move my applet (and his related directory) to another working directory or I copy the applet to a pc that hasn't this path I've to change every the path in the code.... I'd solve my problem if I could express a relative path (i.e. something like /textures) instead of expressing an absolute one that I've to change every time I move the applet in another place.

Bye and thanks

Ok, now it works  

Bye and thanks a lot for your help :wink:

ok, now collision detecyion works but, you guess..... I've still some problem.....   I'm experimenting using check types: checkForCollisionSpherical isn't good enough in my situation; I've tried checkForCollisionEllipsoid and I've an odd behaviuor; I've defined the following:

if ((obj_bw) && (!feritoID.equals("none"))){
                   
    Object3D oggetto=theWorld.getObjectByName(feritoID);
    SimpleVector collision= new SimpleVector(44f,15f,10f);
    SimpleVector translate= new SimpleVector(-5f,0f,0f);
    translate=oggetto.checkForCollisionEllipsoid(translate, collision, 5);
    oggetto.translate(translate);
                         
                }

using collision with the above SimpleVector's values the obj compenetrate a bit in the wall; if I change the collision values into:

SimpleVector collision= new SimpleVector(45f,15f,10f);

it's too much off the wall: why changing by just 1 unit I've a so different result?
I've even tried to use checkForCollision method:

if ((obj_bw) && (!feritoID.equals("none"))){
                   
    Object3D oggetto=theWorld.getObjectByName(feritoID);
    SimpleVector direction= new SimpleVector(1,0,0);
    SimpleVector translate= new SimpleVector(-5f,0f,0f);
    translate=oggetto.checkForCollision(direction, 10);
    oggetto.translate(translate);
                         
                }

but the compiler says:

ThreeDSimApplet.java:864: incompatible types
found   : int
required: com.threed.jpct.SimpleVector
    translate=oggetto.checkForCollision(direction, 10);
                                                           ^
Note: ThreeDSimApplet.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.
1 error

any explaination. Bye and thanks  

Ok, I've got it, but I'm experimenting two new problems; here follows the code used for to load the moving objs:


Object3D[] miscArray=Loader.load3DS(getDocumentBase(),"3ds/oggetti/"+name_obj, 20f);
         Object3D miscObj=miscArray[0];
            miscObj.setCenter(SimpleVector.ORIGIN);
            miscObj.translate (-462, -30, -186);
            miscObj.rotateX((float)-Math.PI/2);
            miscObj.rotateMesh();
            miscObj.setRotationMatrix(new Matrix());
     
            miscObj.createTriangleStrips(2);
            miscObj.setCollisionMode(Object3D.COLLISION_CHECK_OTHERS);
         miscObj.setCollisionOptimization(Object3D.COLLISION_DETECTION_OPTIMIZED);
           
            miscObj.build();
            theWorld.addObject(miscObj);



When I select it using the following in Main():


if (clicked) {
                   
                         SimpleVector ray=Interact2D.reproject2D3D(camera, buffer, mouseX, mouseY);
                         int[] res=Interact2D.pickPolygon(theWorld.getVisibilityList(), ray);

                         if (res!=null) {
                             Object3D pickedObjs=theWorld.getObject(Interact2D.getObjectID(res));
                             feritoID = pickedObjs.getName();
                         }
                                               
                         clicked=false;
                         
                      }  



and press 'w' key, the obj has to move on his x axis; so, I've used the following code in timer():


if ((obj_up) && (feritoID != "none")){
               
                Object3D oggetto;
                oggetto=theWorld.getObjectByName(feritoID);
                SimpleVector coordinate = oggetto.getTranslation();
                coordinate.x=-462.1f;
                oggetto.translate(coordinate);
                         
                }


even if I've changed the x value with a small value (0.1) it covers a long distance in the applet; another problem is collision detection doesn't work and the obj compenetrate the others. Any suggestion?  :?

Bye and thanks

Hi Egon,

I'm here again... I'd ask you in which way, if it's possible, I can express a 3D Object using is ID instead of is name; i.e.:

something like Object3D(ID).animate instead of animateMe.animate

It's possible to force a 3D Object to get a specific id (I've just find out a method to set the id of the next obj)?

Bye and thanks