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add velocity filtering to eyePosition to reduce camera jitter from faceshift

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This commit is contained in:
Philip Rosedale 2014-07-23 22:45:50 -07:00
parent 311e752682
commit 00fdc37822
3 changed files with 8 additions and 2 deletions
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2
interface/src/Application.cpp
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@ -592,7 +592,7 @@ void Application::paintGL() {
if (_myCamera.getMode() == CAMERA_MODE_FIRST_PERSON) {
_myCamera.setTightness(0.0f); // In first person, camera follows (untweaked) head exactly without delay
_myCamera.setTargetPosition(_myAvatar->getHead()->calculateAverageEyePosition());
_myCamera.setTargetPosition(_myAvatar->getHead()->getFilteredEyePosition());
_myCamera.setTargetRotation(_myAvatar->getHead()->getCameraOrientation());
} else if (_myCamera.getMode() == CAMERA_MODE_THIRD_PERSON) {

4
interface/src/avatar/Head.cpp
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@ -159,6 +159,10 @@ void Head::simulate(float deltaTime, bool isMine, bool billboard) {
}
}
_eyePosition = calculateAverageEyePosition();
float velocityFilter = glm::clamp(1.0f - glm::length(_filteredEyePosition - _eyePosition), 0.0f, 1.0f);
_filteredEyePosition = velocityFilter * _filteredEyePosition + (1.0f - velocityFilter) * _eyePosition;
}
void Head::relaxLean(float deltaTime) {

4
interface/src/avatar/Head.h
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@ -89,7 +89,7 @@ public:
const bool getReturnToCenter() const { return _returnHeadToCenter; } // Do you want head to try to return to center (depends on interface detected)
float getAverageLoudness() const { return _averageLoudness; }
glm::vec3 calculateAverageEyePosition() const { return _leftEyePosition + (_rightEyePosition - _leftEyePosition ) * ONE_HALF; }
glm::vec3 getFilteredEyePosition() const { return _filteredEyePosition; }
/// \return the point about which scaling occurs.
glm::vec3 getScalePivot() const;
@ -120,6 +120,8 @@ private:
glm::vec3 _leftEyePosition;
glm::vec3 _rightEyePosition;
glm::vec3 _eyePosition;
glm::vec3 _filteredEyePosition; // velocity filtered world space eye position
float _scale;
float _lastLoudness;
float _audioAttack;