Confused between formation of paralell and criss cross lines

Hello everyone. I just started learning grasshopper from tutorials of David Rutten. I was on second video and started struggling on a very minor issue. When we make 2 curves on rhino and divide it, and then try to set points A and B with multiple points, then the resultant is sometimes criss cross lines and sometimes it's paralell lines. I have attached the screenshot below. Please guide me.

Replies to This Discussion

Permalink Reply by Joseph Oster on March 14, 2017 at 8:22pm

Curve direction? Got code?

Permalink Reply by anchal bhaskar on March 14, 2017 at 9:19pm

No. It would be great if you tell me what am I doing wrong.

Permalink Reply by Joseph Oster on March 15, 2017 at 6:29am

The screen image you posted is unreadable.
You didn't post the code/data so we can't look for details that screen images won't reveal anyway - like the possibility that the two curves have opposite directions, which would cause the problem you describe.

Permalink Reply by anchal bhaskar on March 16, 2017 at 7:25pm

Ok. Sorry for the same. I have attached a new file. And here also the lines formed are criss cross and not paralell.

Permalink Reply by Joseph Oster on March 16, 2017 at 8:11pm

Your Rhino file appears to be empty? So your GH file does nothing.

You can internalize curves (any geometry) in the GH file by right-clicking the params that import from Rhino and clicking "Internalize data".

Did you happen to look at this thread yesterday?

Tween curve problem
http://www.grasshopper3d.com/forum/topics/tween-curve-problem

Permalink Reply by anchal bhaskar on March 16, 2017 at 9:09pm

I am extremely sorry for that. I attached it again. And somehow I think I got the solution. I just right clicked on the A element of line component and selected reverse. And it created paralell lines. Do you think this is the correct solution?

Attachments:

Divide and pipe.3dm, 214 KB
divide.gh, 7 KB

Permalink Reply by Joseph Oster on March 16, 2017 at 9:44pm

Yes, that is one possible solution - do you understand why it worked?

The other way is to flip the direction on one curve to match the other one (as I suggested in my first post all three of my earlier posts). Like this: