Indeed, with default parameters, the shape you get is "inside out". You have 3 ways to correct that:
- swap p1 and p2
- swap the endpoint vertices of direction vector in files s3 and s4. Remember that the 1st enpoint of direction vector is placed on p1, the 2nd is placed on p2. Both methods above are thus completely equivalent
- Use the -i option (Invert curvature) but this will also invert BFW of resulting file. No big deal...
- swap p1 and p2
- swap the endpoint vertices of direction vector in files s3 and s4. Remember that the 1st enpoint of direction vector is placed on p1, the 2nd is placed on p2. Both methods above are thus completely equivalent
- Use the -i option (Invert curvature) but this will also invert BFW of resulting file. No big deal...