Hi.

I'm new to Android programming and augmented reality, but I would like to move an object that appears with a marker. I have relied on a library that integrates ARToolkit and JPCT-AE ( https://github.com/plattysoft/ArToolKitJpctBaseLib ). I have read some forum threads, but without success.

In my mind it sounded pretty good to implement a onTouch from the Renderer, but it has not worked for me.

@Override
    public boolean onTouch(View view, MotionEvent event) {
        Log.d(TAG, "Tocando pantalla");


        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            xpos = event.getX();
            ypos = event.getY();
            Log.d(TAG, String.format("Action Down (%f,%f)", xpos, ypos));

            if (mBuffer != null) {
                SimpleVector pos = Interact2D.reproject2D3D(mCamera, mBuffer, (int) xpos, (int) ypos, 50f);
                pos.matMul(mCamera.getBack().invert3x3());
                this.mTrackableObjects.get(0).clearTranslation();
                this.mTrackableObjects.get(0).translate(pos);
            }
            return true;
        }

        if (event.getAction() == MotionEvent.ACTION_UP) {
            xpos = -1;
            ypos = -1;
            touchTurn = 0;
            touchTurnUp = 0;
            Log.d(TAG, "Action Up");
            return true;
        }

        if (event.getAction() == MotionEvent.ACTION_MOVE) {
            float xd = event.getX() - xpos;
            float yd = event.getY() - ypos;

            xpos = event.getX();
            ypos = event.getY();

            touchTurn = xd / -100f;
            touchTurnUp = yd / -100f;

            if (mBuffer != null) {
                SimpleVector pos = Interact2D.reproject2D3D(mCamera, mBuffer, (int) xpos, (int) ypos, 50f);
                pos.matMul(mCamera.getBack().invert3x3());
                this.mTrackableObjects.get(0).clearTranslation();
                this.mTrackableObjects.get(0).translate(pos);
            }

            Log.d(TAG, String.format("Action Move (%f,%f)", xpos, ypos));
            return true;
        }

        try {
            Thread.sleep(15);
        } catch (Exception e) {
            // No need for this...
        }
        return false;
}


If you need more context, I have the project https://github.com/sebasalazar/Haunter

I would ask any advice or suggestions, or any guide as it should do, because I'm very lost: S

PD: Sorry for my english.