Hi,

Can anyone point me to best AR solution(preferably free) which can be used with JPCT? (for desktop)

or Can anyone point me how can I replace the JPCT canvas with Live camera feed so that when I render 3D objects the objects will be rendered inside Camera feed?

Thanks in advance
MSL

Hi,

When I integrated with Vuforia, the CUBE was usually lying behind the marker. Hence, it had a odd rotating feeling when we moved camera around it. This was solved by translating CUBE by its SIZE in the z-axis. If I need to display any model, now I have to do the same adjustment i.e translate the model by its SIZE in the z-axis. (Since my model will lay on the marker I think I need height of the model to use in translation)
How can I achieve this?
What method I need to use which will get me the SIZE(or height) of the model?

Above questions resulted me in getting few basic questions. They may be trivial or may be answered. I checked few posts here on this topic I was unable to get satisfactory answers. Here are the questions:

1- What does model units mean when we load them in jpct(i.e any relation between units used while creating the model in a 3D software and jpct)?
2- What are the steps that need to be taken care before loading models in jpct which will ensure "proper" sizing(and probably orientation) during rendering? (in 3D software and in jpct)
3- Is there any way of getting the size (in some units) of the model at run time (apart from getScale)?
4- What is the basis for scaling?
5- One question regarding the object position after scaling which I didnt know how to ask, so I have attached an image. If you refer the image, if the "Dist" need to be constant then on every scaling operation, I have to calculate the distance and translate the object with that distance. Is there any easy of doing this?

If anyone can answer taking consideration of model with only 1 object and model with multiple objects will be great.
For modelling I use 3DS Max.

Thanks


[attachment deleted by admin]

Hi,

I am trying to load a serialized file but I am getting Can't deserialize object error.

Code used to load serialized object:
----------------------------------------------------------------------------------------------------------------------------
ZipInputStream zis = new ZipInputStream(mContext.getResources().openRawResource(R.raw.teapot));
try {
   zis.getNextEntry();
} catch (IOException e) {throw new RuntimeException(e);}
cube = Loader.loadSerializedObject(zis);
-----------------------------------------------------------------------------------------------------------------------------
Error:
11-15 15:56:08.478: E/Trace(11279): error opening trace file: No such file or directory (2)
11-15 15:56:08.828: E/AndroidRuntime(11279): FATAL EXCEPTION: GLThread 6828
11-15 15:56:08.828: E/AndroidRuntime(11279): java.lang.RuntimeException: [ 1384511168803 ] - ERROR: Can't deserialize object: length=256; regionStart=-1; regionLength=257
11-15 15:56:08.828: E/AndroidRuntime(11279):    at com.threed.jpct.Logger.log(Logger.java:189)
11-15 15:56:08.828: E/AndroidRuntime(11279):    at com.threed.jpct.DeSerializer.deserialize(DeSerializer.java:244)
11-15 15:56:08.828: E/AndroidRuntime(11279):    at com.threed.jpct.Loader.loadSerializedObject(Loader.java:93)
11-15 15:56:08.828: E/AndroidRuntime(11279):    at com.threed.jpct.example.HelloWorld$MyRenderer.onSurfaceChanged(HelloWorld.java:204)
11-15 15:56:08.828: E/AndroidRuntime(11279):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1531)
11-15 15:56:08.828: E/AndroidRuntime(11279):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1266)

-----------------------------------------------------------------------------------------------------------------------------

If I use following code to load:
cube = Loader.loadSerializedObject(mContext.getResources().openRawResource(R.raw.teapot));

Error:
11-15 15:53:34.603: E/Trace(11063): error opening trace file: No such file or directory (2)
11-15 15:53:34.945: E/AndroidRuntime(11063): FATAL EXCEPTION: GLThread 6816
11-15 15:53:34.945: E/AndroidRuntime(11063): java.lang.RuntimeException: [ 1384511014916 ] - ERROR: Can't deserialize object: [ 1384511014915 ] - ERROR: Unsupported version: 6
11-15 15:53:34.945: E/AndroidRuntime(11063):    at com.threed.jpct.Logger.log(Logger.java:189)
11-15 15:53:34.945: E/AndroidRuntime(11063):    at com.threed.jpct.DeSerializer.deserialize(DeSerializer.java:244)
11-15 15:53:34.945: E/AndroidRuntime(11063):    at com.threed.jpct.Loader.loadSerializedObject(Loader.java:93)
11-15 15:53:34.945: E/AndroidRuntime(11063):    at com.threed.jpct.example.HelloWorld$MyRenderer.onSurfaceChanged(HelloWorld.java:204)
11-15 15:53:34.945: E/AndroidRuntime(11063):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1531)
11-15 15:53:34.945: E/AndroidRuntime(11063):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1266)

----------------------------------------------------------------------------------------------------------------------------

Code used to serialize an object in Desktop JPCT (object is basic Teapot):
----------------------------------------------------------------------------------------------------------------------------
        box = loadModel("models/"+thingName+".obj","models/"+thingName+".mtl", 100);
        try {
            new DeSerializer().serialize(box, new FileOutputStream("models/teapot.ser"), true);
         } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }

   private Object3D loadModel(String filename, String filemtl, float scale) throws IOException {
         InputStream streamModel = getResources().getAssets().open(filename);
         InputStream streamMtl = getResources().getAssets().open(filemtl);

           Object3D[] model = Loader.loadOBJ(streamModel, stearmMtl, scale);
           Object3D o3d = new Object3D(0);
           Object3D temp = null;
           for (int i = 0; i < model.length; i++) {
               temp = model;
               temp.setCenter(SimpleVector.ORIGIN);
               temp.rotateX((float)( -.5*Math.PI));
               temp.rotateMesh();
               temp.setRotationMatrix(new Matrix());
               o3d = Object3D.mergeObjects(o3d, temp);
               o3d.build();
           }
           return o3d;
    }
--------------------------------------------------------------------------------------------------------------------

Any help would be appreciated.