Flinger source hasn't responded.. anybody who tried has any suggestions.. Basically things work well in a single orientation.. its when orientation changes that things go on a toss. The horizontal component of pitch and roll get toggled at their extremes (+/-90 and +/-180). Workarounds apart is there a right way to get rotation matrix from sensors even when orientation changes along with everything else?
Thanks in advance RS On Jun 21, 4:03 pm, RS <rajeshs...@gmail.com> wrote: > Could somebody (Mathias Agopian alias pixelflinger perhaps) please > tell me how to use information fromsensorforaugmentedreality > stuff. > Sorry am not much into graphics stuff but I did try my part to figure > stuff out with help of documentation. > Didn't miss the note: > ""Note: It is preferable to use getRotationMatrix() in conjunction > with remapCoordinateSystem() and getOrientation() to compute these > values; while it may be more expensive, it is usually more accurate. > "" > > Tried both. With the above method roll is always negative (in radians) > of the roll returned by orientationsensorevent. Not the real problem > though as these are in the same +/-90 range but negative/opposite. > One of these goes against the definition of roll in android > documentation. > > I have the camera on landscape mode and did try with and without the > suggestion: > ""# Using the camera (Y axis along the camera's axis) for anaugmented > reality application where the rotation angles are needed : > remapCoordinateSystem(inR, AXIS_X, AXIS_Z, outR); "" > > Yet no luck. Got a few lessons on quaternions etc. But am sure it is > much easier than the mess am getting into. > > Say, orientationsensorevent returns yaw, pitch & roll in say eO[] > What are the next steps to get rotation matrix that I could use in > opengl to rotate aaugmentedscene overlapping the camera preview? > > Thanks and regards > RS > > ps: > I have used Matrix.setRotateEulerM (m, eO[0], eO[1], eO[2]); // tried > with negatives too. > I have also tried other events (eA and eM) to eO through; > SensorManager.getRotationMatrix(mR, mI, eA, eM); > and then remap as suggested etc. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
