gluLookAt() or other?

I need to be able to have a camera go about YAW, PITCH and ROLL viewing rotations. The code I have below deals with YAW and PITCH perfectly, but roll is far more difficult. I understand that the rotation needs to be described as a rotation that is rotated by the YAW and PITCH, and so forms a circle perpendicular to the direction faced.

  gluLookAt(
  ///This one handles the actual viewer position:
  x, y, z,
  ///This one handles viewer direction - Yaw and Pitch
  x+
  (sin(YAW / 180 * PI)) * cos(PITCH / 180 * PI)
  , ///-------------------------------------
  y+
  sin(PITCH / 180 * PI)
  , ///-------------------------------------
  z+
  (cos(YAW / 180 * PI)) * cos(PITCH / 180 * PI)
  ,
  0,
  cos(PITCH / 180 * PI),
  0
  );

How do I go about roll? I also have this:

  gluLookAt(
  x, y, z,

  x+
  (sin(YAW / 180 * PI)) * cos(PITCH / 180 * PI)
  , ///-------------------------------------
  y+
  sin(PITCH / 180 * PI)
  , ///-------------------------------------
  z+
  (cos(YAW / 180 * PI)) * cos(PITCH / 180 * PI)
  ,
  cos(YAW / 180 * PI) * sin(ROLL / 180 * PI),
  cos(PITCH / 180 * PI),
  sin(YAW / 180 * PI) * sin(ROLL / 180 * PI)
  );

Which very vaguely handles roll, but when I try to combine YAW, PITCH and ROLL at the same time, it becomes unusable. I know it involves XYZup, but I do not really know how to progress, I have tried many different combinations, most of which have been me thinking about the problem, but the latest ones have been guesses.

I really, really need help. I have to do this, I am 15 and need to have a working flight simulator by the end of next summer. Please could the solution keep to trig, I do not understand matrix notation and do not believe I have time to learn it. Is there an alternative to gluLookAt()? would glRotate do anything? I do not know what I need any more, and with all my other problems this is weighing me down.

I appreciate any help

Last edited on

RobCh (28)

Oh, look at that, I think I have solved it. It seems glRotate() was the right thing to use.

I might have more questions

*Edit: No I wont

Last edited on

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gluLookAt() or other?