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Using the image target as a physical "paddle"?

December 23, 2010 - 6:01am #1

I'm wondering if there are examples of using the real image target as a physical paddle, or a real image target whose orientation virtual-physically interacts with virtual objects.

Using the image target as a physical "paddle"?

July 10, 2012 - 8:31am #6

Using the image target as a physical "paddle"?

July 10, 2012 - 12:12am #5

hi, i want to do the same. hmmm...not really the same but i would like to make a 3d game object that appears when the image target is detected (and is thus a child of the image target). i want it to interact physically with game objects that are always there. say, a ball falls on it, it should bounce. but right now, even though the image target's child has a collider on it, another game object would just pass through.

Using the image target as a physical "paddle"?

July 10, 2012 - 12:12am #4

hi, i want to do the same. hmmm...not really the same but i would like to make a 3d game object that appears when the image target is detected (and is thus a child of the image target). i want it to interact physically with game objects that are always there. say, a ball falls on it, it should bounce. but right now, even though the image target's child has a collider on it, another game object would just pass through.

Re: Using the image target as a physical "paddle"?

December 23, 2010 - 9:00pm #3

Problem with that approach is that it's probably not going to fly on most Android devices - range of sensitivities in accelerometers.

But, yes, I suppose I was dreaming there - trying to get this to work like a very-basic Kinect ;-)

Re: Using the image target as a physical "paddle"?

December 23, 2010 - 7:42am #2

Using the target as a paddle is probably a bad idea... In general, fast motions of either the target or the device are going to cause decreased tracking performance.

It's pretty easy to relate the position of multiple targets to each other, so relative target positioning can be used as input to your application.

As I mentioned before, if you want to find the real-world orientation of a target you will have to take the accelerometer values into account. You can use a low-pass filter to find an approximate gravity vector for the device, and then you can find a gravity vector for the target with a little bit of math. We don't currently have any example code for this though.

- Kim

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