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

I haven't set any rotation matrix to the model object,  and below value was present in the rotation matrix
rotationMatrix[0] = 1.0
rotationMatrix[1] = 0.0
rotationMatrix[2] = 0.0
rotationMatrix[3] = 0.0
rotationMatrix[4] = 0.0
rotationMatrix[5] = 1.0
rotationMatrix[6] = 0.0
rotationMatrix[7] = 0.0
rotationMatrix[8] = 0.0
rotationMatrix[9] = 0.0
rotationMatrix[10] = 1.0
rotationMatrix[11] = 0.0
rotationMatrix[12] = 0.0
rotationMatrix[13] = 0.0
rotationMatrix[14] = 0.0
rotationMatrix[15] = 1.0

is this you mean?

Prakash V

Hi,

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

onTouch event is not working when i set the billboard.

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?

I have to know whether user clicked on the model/object instead of the screen.