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» CS 491 Lecture 12 – Continuous rendering and gestures

teaching machines

CS 491 Lecture 12 – Continuous rendering and gestures

October 23, 2012 by . Filed under
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cs491 mobile, fall 2012, lectures.

Before class

A

Before next class:

B

Before next class:

In class

Write a continuous renderer that draws a number word like “one”, “two”, “three”, and so on, which gets bigger and bigger and bigger over time. If the user draws the corresponding gesture—a 1, 2, 3, …—generate and draw a new word. If the scale gets too big  before the gesture is entered, penalize the user in some fashion. Perhaps the users get three chances.

Use a GestureOverlayView and SurfaceView in a FrameLayout.

Avoid race conditions! If you your UI thread and drawing thread access the same data, lock away that access in a block synchronized on the holder.