This function computes the value of the geodesic curve connecting two points p and q on the unit sphere at specified time points.
     
    
    
    Arguments
- t
- Numeric vector representing time points for the geodesic path. 
- p
- Numeric vector representing the starting point on the sphere. 
- q
- Numeric vector representing the ending point on the sphere. 
- a
- Start time parameter. 
- b
- End time parameter. 
 
    
    Value
    Numeric matrix representing points along the geodesic path at specified time points.
     
    
    Examples
    geodesic(c(0.25, 0.5, 0.75), c(1,0,0), c(0,1,0), 0, 1)
#>           [,1]      [,2] [,3]
#> [1,] 0.9238795 0.3826834    0
#> [2,] 0.7071068 0.7071068    0
#> [3,] 0.3826834 0.9238795    0