- #1
mario991
- 3
- 0
hi,
i'm a newbie...
i have this problem:
i have a sphere with known and constant R (obvious),
i have two point with spherical coordinates
P1=(R,p_1,t_1) and P0=(R, p_0, t_0)
p_x = phi x = latitude x
t_x = theta x =longitude x
the distance between point is
D= R*arccos[cos(p_0)*cos(p_1)+sin(p_0)*sin(p_1)*cos(t_1-t_0)]
source (http://mathforum.org/library/drmath/view/51882.html)
or similar (http://www.movable-type.co.uk/scripts/latlong.html)
but in spherical coordinates which is explicit formula of the
circle on sphere with center in P0 and radius P0 to P1 ?
many thanks
mario
PS image on this link
https://www.dropbox.com/s/807dqx0wovvw34v/2015-03-24_213647.png?dl=0
PSS i cannot understand if this is the same problem ...
https://www.physicsforums.com/threa...ven-two-points-on-circle.571535/#post-3732362
i'm a newbie...
i have this problem:
i have a sphere with known and constant R (obvious),
i have two point with spherical coordinates
P1=(R,p_1,t_1) and P0=(R, p_0, t_0)
p_x = phi x = latitude x
t_x = theta x =longitude x
the distance between point is
D= R*arccos[cos(p_0)*cos(p_1)+sin(p_0)*sin(p_1)*cos(t_1-t_0)]
source (http://mathforum.org/library/drmath/view/51882.html)
or similar (http://www.movable-type.co.uk/scripts/latlong.html)
but in spherical coordinates which is explicit formula of the
circle on sphere with center in P0 and radius P0 to P1 ?
many thanks
mario
PS image on this link
https://www.dropbox.com/s/807dqx0wovvw34v/2015-03-24_213647.png?dl=0
PSS i cannot understand if this is the same problem ...
https://www.physicsforums.com/threa...ven-two-points-on-circle.571535/#post-3732362
Last edited: