11.16.16 Check if lines are in a bundle: is_harmonic_line_bundle
The is_harmonic_line_bundle command takes as
argument a list or sequence of lines.
is_harmonic_line_bundle returns
-
1 if the lines pass through a common point
- 2 if the lines are parallel
- 3 if the lines are the same
- 0 otherwise
Input:
is_harmonic_line_bundle([line(0,1+i),line(0,2+i),line(0,3+i),line(0,1)])
Output:
1