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Stabilize face shift head camera movement with velocity filtering

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Philip Rosedale 2014-08-19 09:37:11 -07:00
parent 9d44f5e4f7
commit 1d13a6c05d
1 changed files with 6 additions and 6 deletions
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12
interface/src/devices/Faceshift.cpp
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@ -219,23 +219,23 @@ void Faceshift::receive(const QByteArray& buffer) {
} else {
_headAngularVelocity = glm::vec3(0,0,0);
}
_headRotation = newRotation;
const float ANGULAR_VELOCITY_FILTER_STRENGTH = 0.3f;
_headRotation = safeMix(_headRotation, newRotation, glm::clamp(glm::length(_headAngularVelocity) *
ANGULAR_VELOCITY_FILTER_STRENGTH, 0.0f, 1.0f));
const float TRANSLATION_SCALE = 0.02f;
glm::vec3 newHeadTranslation = glm::vec3(data.m_headTranslation.x, data.m_headTranslation.y,
-data.m_headTranslation.z) * TRANSLATION_SCALE;
_headLinearVelocity = (newHeadTranslation - _lastHeadTranslation) / _averageFrameTime;
// Velocity filter the faceshift head translation because it's noisy
float velocityFilter = glm::clamp(1.0f - glm::length(_headLinearVelocity), 0.0f, 1.0f);
const float LINEAR_VELOCITY_FILTER_STRENGTH = 0.3f;
float velocityFilter = glm::clamp(1.0f - glm::length(_headLinearVelocity) *
LINEAR_VELOCITY_FILTER_STRENGTH, 0.0f, 1.0f);
_filteredHeadTranslation = velocityFilter * _filteredHeadTranslation + (1.0f - velocityFilter) * newHeadTranslation;
_lastHeadTranslation = newHeadTranslation;
_headTranslation = _filteredHeadTranslation;
//_headTranslation = newHeadTranslation;
_eyeGazeLeftPitch = -data.m_eyeGazeLeftPitch;
_eyeGazeLeftYaw = data.m_eyeGazeLeftYaw;