simulation

I wish to simulate camera in the android emulator using the webcam. Basically I need to only take photos with the camera in the emulator (live preview is not needed i.e if it makes it any easier) I followed the tutorial here which is the only one I could find that was close to my requirements But many of the libraries used in that tutorial(like android.hardware.CameraDevice) are not available in present sdk and are replaced by new libraries(like android.hardware.camera). Any help on how to do this in the present sdk(2.1 or 2.2) would be much appreciated. Update: ICS emulator supports camera.

I would like to generate N random positive integers that sum to M . I would like the random positive integers to be selected around a fairly normal distribution whose mean is M/N , with a small standard deviation (is it possible to set this as a constraint?). Finally, how would you generalize the answer to generate N random positive numbers (not just integers)? I found other relevant questions, but couldn't determine how to apply their answers to this context: https://stats.stackexchange.com/questions/59096/generate-three-random-numbers-that-sum-to-1-in-r Generate 3 random number that sum to 1