12.13.2 Check if points and/or lines in space are coplanar: is_coplanar
The is_coplanar command takes as arguments a list or
sequence of points or lines.
is_coplanar returns 1 is the objects are coplanar;
it returns 0 otherwise.
Input:
is_coplanar([0,0,0],[1,2,-3],[1,1,-2],[2,1,-3])
Output:
1
Input:
is_coplanar([-1,2,0],[1,2,-3],[1,1,-2],[2,1,-3])
Output:
0
Input:
is_coplanar([0,0,0],[1,2,-3],line([1,1,-2],[2,1,-3]))
Output:
1
Input:
is_coplanar(line([-1,2,0],[1,2,-3]),line([1,1,-2],[2,1,-3]))
Output:
0