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    Searched refs:laser (Results 1 - 4 of 4) sorted by null

  /external/walt/docs/
DragLatency.md 5 For drag (or scroll) latency WALT uses a laser that shines across the touch device and hits a detector on the
6 other side. The microcontroller monitors the state of the laser detector and reports (over usb) when
7 the laser beam is broken. A finger dragged back and forth on a touchpad or touch screen
8 and interrupts a laser beam. Touch events from the pad and laser events are then processed together
31 The red 'x' marks are points where the finger was at times _t<sub>i</sub>_ when the finger went into or out of the laser beam. The y distance between the two lines of x marks is roughly the thickness of the finger. For now consider only one of the lines, e.g. the upper one.
33 Now imagine that the clocks timestamping the touch and the laser events diverge a little (this divergence is the latency we want to measure). The red 'x' marks would move along the graph. But half of them would move up and half down (corresponding to direction of the finger movement in that point) and therefore they would diverge in opposite directions from the relatively straight horizontal line you see on the screenshot.
37 This calculation that only looks at the _y_ coordinate assumes the laser beam is parallel to the _x_ axis and prefers no motion of the finger in the _x_ direction.
  /external/walt/arduino/walt/
walt.ino 95 struct trigger laser, screen, sound, midi, gshock, copy_trigger;
96 struct trigger * triggers[TRIGGER_COUNT] = {&laser, &screen, &sound, &midi, &gshock};
107 // Interrupt handler for laser photodiode
109 laser.t = time_us;
111 laser.value = !digitalRead(PD_LASER_PIN);
112 laser.count++;
114 digitalWrite(DEBUG_LED2, laser.value);
196 laser.tag = 'L';
349 laser.autosend = true;
350 laser.count = 0
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  /development/samples/JetBoy/src/com/example/android/jetboy/
JetBoyView.java 161 // has laser been fired and for how long?
162 // user for fx logic on laser fire
266 // this is the pixel position of the laser beam guide.
376 mLaserShot = BitmapFactory.decodeResource(mRes, R.drawable.laser);
701 // Update laser state. Having this here allows the laser to
703 // pressed. If we comment this out the laser will only be
718 // Update laser state, turning it on if a key has been
775 * This method updates the laser status based on user input and shot
786 // If the laser has been on too long shut it dow
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  /device/google/wahoo/
init.hardware.rc 411 # Permission for laser sensor driver
412 chown camera camera /sys/class/wahoo_laser/laser/enable_ps_sensor

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