Hi,

  I'm loading obj file which is not having mtl definition in android, it rendered 3d model colored with white. But when i render same obj model in IOS it renders 3d model with gray color. what could be the problem?. Should i add any properties for the 3d model?

Prakash V

Hi,

 I am loading obj file which defines the transparency of the material to be alpha in the mtl file. when i loaded the background black color is still displaying. I have used following code to load the texture images. Can you please tell me, what could be the problem.

BitmapFactory.Options options = new BitmapFactory.Options();
                        options.inDither = false; //Disable Dithering mode
                        options.inPurgeable = true; //Tell to gc that whether it needs free memory, the Bitmap can be cleared
                        options.inInputShareable = true; //Which kind of reference will be used to recover the Bitmap data after being clear, when it will be used in the future
                        options.inTempStorage = new byte[4 * 1024];
                        File file = new File(filePath + "/" + s);
                        fs = new FileInputStream(file);
                        bitmapFile = BitmapFactory.decodeFileDescriptor(fs.getFD(), null, options);
                        fs.close();
                        if (bitmapFile.getWidth() > 512 || bitmapFile.getHeight() > 512) {
                           texture2 = new com.threed.jpct.Texture(
                              BitmapHelper.rescale(bitmapFile, 512, 512), true);
                        }
                        else {
                           texture2 = new com.threed.jpct.Texture(
                              bitmapFile, true);
                        }
                           
                        texture2.enable4bpp(true);
                        com.threed.jpct.Texture.defaultToMipmapping(false);
                        TextureManager.getInstance().replaceTexture(s, texture2);


MTL File :
newmtl Thalaiva
   Ns 92.1600
   Ni 1.5000
   d 1.0000
   Tr 0.0000
   Tf 1.0000 1.0000 1.0000
   illum 2
   Ka 0.5098 0.5098 0.5098
   Kd 0.5098 0.5098 0.5098
   Ks 0.2500 0.2500 0.2500
   Ke 0.0000 0.0000 0.0000
   map_Ka thalaivaa.png
   map_Kd thalaivaa.png
   map_d thalaivaa_opa.png

Hi,

 I have integrated the vuforia with jpct-ae, how to i get actual camera angle using direction vector or upside vector?

Hi,

 i have added the code to display object in jpct-ae

 model.align(camera)

 when i move the direction the whole object is moving / rotated. How to place the object in static position with camera?

Hi,

 is possible to handle the onclick or doubletab event for the model in android? or any other way i can handle that.

 Problem is when the user double click the model object, the associated video for the model object should play on the top of 3d model object.

Thanks & Regards,
Prakash V

Hi,

 I have integrated JPCT-AE with vuforia and showing dynamic 3d models, my issue is each model has its own scaling, when i load it with scale 1

Loader.loadOBJ(new FileInputStream(objFiles),
                  new FileInputStream(mtlFiles),1)[0];

each model displayed with own scale and some of them showing very little, how to i uniform the scale?

Should i scale the modelViewMatrix from vuforia?

Hi,

 I'm using vuforia+jpct, i want to load obj file which has material defined in mtl file, materials are in textures folder in sdcard. How do i load texture when i load obj?

Prakash V

Hi,

  We have integrated the JPCT-AE engine with vuforia qualcomm for image recognition and displaying the 3d model.

 Can you please provide the how many polygon count it will support and texture size. If there are any other limitations please provide it.

  Thanks in advance.

Prakash V