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Slerped head tracking for RajawaliVRRenderer.java to remove sensor jitter. #4

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Slerped head tracking for RajawaliVRRenderer.java to remove sensor jitter. #4

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17 changes: 10 additions & 7 deletions RajawaliVR/src/rajawali/vr/RajawaliVRRenderer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,14 +13,15 @@ public class RajawaliVRRenderer extends RajawaliSideBySideRenderer {
protected HeadTransform mHeadTransform;
protected float[] mHeadViewMatrix;
protected Matrix4 mHeadViewMatrix4;
private Quaternion mCameraOrientation;
protected Quaternion cam1, cam2;

public RajawaliVRRenderer(Context context) {
super(context);
mHeadTransform = new HeadTransform();
mHeadViewMatrix = new float[16];
mHeadViewMatrix4 = new Matrix4();
mCameraOrientation = new Quaternion();
cam1 = new Quaternion();
cam2 = new Quaternion();
}

@Override
Expand All @@ -38,11 +39,13 @@ public void onRender(double deltaTime) {
mHeadTracker.getLastHeadView(mHeadViewMatrix, 0);
mHeadViewMatrix4.setAll(mHeadViewMatrix);

mCameraOrientation.fromMatrix(mHeadViewMatrix4);
mCameraOrientation.x *= -1;
mCameraOrientation.y *= -1;
mCameraOrientation.z *= -1;
setCameraOrientation(mCameraOrientation);
cam1.fromMatrix(mHeadViewMatrix4);
cam1.x *= -1;
cam1.y *= -1;
cam1.z *= -1;

cam2.slerp(cam1, .3);
setCameraOrientation(cam2);
super.onRender(deltaTime);
}
}