Alex Wallace

hi, i've got a logitech joystick spitting out polar x and theta

what i want to do is lock the camera lookat position into a sphere with radius 1 around the camera position where x y z = lookat coordinates and h j k = camera position coordinates such that

then add to the lookat position using the x and theta of the joystick but all the while have the values locked into the sphere around the position so that no matter the position i can rotate the camera view with the joystick

any ideas on how to accomplish this equation? i don't know how to patch an equation relationship using expr.

what i want to do is lock the camera lookat position into a sphere with radius 1 around the camera position where x y z = lookat  coordinates and h j k =  camera position coordinates such that 

then add to the lookat position using the x and theta of the joystick but all the while have the values locked into the sphere around the position so that no matter the position i can rotate the camera view with the joystick 

any ideas on how to accomplish this equation? i don't know how to patch an equation relationship using expr.


joystick-modifying-camera-lookat-with-respect-to-camera-position

you probably want to use quaternions for this.

you probably want to use quaternions for this.
this library will help:
http://www.allosphere.ucsb.edu/cosm/


Joystick modifying camera lookat with respect to camera position