Create a Drumpad Where The Touch Position Controls Note Velocity

Question

Is it possible to create a control that is a drum pad where the initial vertical touch position determines the velocity of the note-on?   How would this be done?  Is there an example layout that does this?

Answer 1

Have you seen this? http://mididesigner.com/drumpads-in-midi-designer/

Answer 2

Have you seen this? http://mididesigner.com/drumpads-in-midi-designer/