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Smooth gaze direction relative to window.

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This commit is contained in:
Andrzej Kapolka 2013-10-24 17:23:21 -07:00
parent 4f3bacdd4c
commit 08db294a5b
1 changed files with 17 additions and 4 deletions
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21
interface/src/devices/Faceshift.cpp
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@ -12,6 +12,7 @@
#include "Faceshift.h"
#include "Menu.h"
#include "Util.h"
using namespace fs;
using namespace std;
@ -63,11 +64,23 @@ void Faceshift::update() {
}
float averageEyePitch = (_eyeGazeLeftPitch + _eyeGazeRightPitch) / 2.0f;
float averageEyeYaw = (_eyeGazeLeftYaw + _eyeGazeRightYaw) / 2.0f;
// get the gaze relative to the window
glm::vec3 eyeEulers = safeEulerAngles(_headRotation * glm::quat(glm::radians(glm::vec3(
averageEyePitch, averageEyeYaw, 0.0f))));
// smooth relative to the window
const float LONG_TERM_AVERAGE_SMOOTHING = 0.999f;
_longTermAverageEyePitch = glm::mix(averageEyePitch, _longTermAverageEyePitch, LONG_TERM_AVERAGE_SMOOTHING);
_longTermAverageEyeYaw = glm::mix(averageEyeYaw, _longTermAverageEyeYaw, LONG_TERM_AVERAGE_SMOOTHING);
_estimatedEyePitch = averageEyePitch - _longTermAverageEyePitch;
_estimatedEyeYaw = averageEyeYaw - _longTermAverageEyeYaw;
_longTermAverageEyePitch = glm::mix(eyeEulers.x, _longTermAverageEyePitch, LONG_TERM_AVERAGE_SMOOTHING);
_longTermAverageEyeYaw = glm::mix(eyeEulers.y, _longTermAverageEyeYaw, LONG_TERM_AVERAGE_SMOOTHING);
// back to head-relative
float windowEyePitch = eyeEulers.x - _longTermAverageEyePitch;
float windowEyeYaw = eyeEulers.y - _longTermAverageEyeYaw;
glm::vec3 relativeEyeEulers = safeEulerAngles(glm::inverse(_headRotation) * glm::quat(glm::radians(glm::vec3(
windowEyePitch, windowEyeYaw, 0.0f))));
_estimatedEyePitch = relativeEyeEulers.x;
_estimatedEyeYaw = relativeEyeEulers.y;
}
void Faceshift::reset() {