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/frameworks/rs/tests/java_api/VrDemo/src/com/example/android/rs/vr/engine/
DViewMatrix.java350 float ballRadius = Math.min(mScreenDim[0], mScreenDim[1]) * .4f; in ballToVec() local
354 double dx = (cx - x) / ballRadius; in ballToVec()
355 double dy = (cy - y) / ballRadius; in ballToVec()