Using sio2LookAt

I don't quite understand what it wants. It says (vec3, vec3, vec3). Which vectors do I put in it? I tried putting a vec3 in just the first. There are no good docs on how to use the functions...

1) Vec3: Eye Position
2) Vec3: Target Position
3) Vec3: Up Vector (Typically 0, 0, 1)

Example:

Code:

vec3 targetPos;
vec3 upVector;

sio2LookAt(sio2->_SIO2camera->_SIO2transform->loc, &targetPos, &upVector);

Thanks! I am going to add this as an entry to the wiki - The function isn't even on there.


-- Actually: What's the point of the vector if you provide the eye and target positions?

Using this function crashes the engine. Here's my code. Wow @ learning curves.

Code:


   // Look at Cube.
   SIO2object *_SIO2object = ( SIO2object * )sio2ResourceGetObject( sio2->_SIO2resource, "object/Cube" );
   vec3 targetPos;
   vec3 upVector;
   upVector.x = 0.0f;
   upVector.y = 0.0f;
   upVector.z = 1.0f;
   sio2LookAt(sio2->_SIO2camera->_SIO2transform->loc, _SIO2object->_SIO2transform->loc, &upVector);