Generate offset curves that Avoid Intersection between obstacle curves

Dear everyone,

I am very new to Grasshopper and I m trying to learn it through using it.

I am currently looking at generating a curve without touching any other obstacle curves and got stuck.

The idea of this GH is to generate a curves that within the red/cyan line and the obstacles lines without touching any line but still closest to the original curve (in green). i.e. the photo below in this case is between the small circles and the red line as the cyan line is further away.

I have an attempt in selecting with line out of cyan and red to get the inner boundary. However, I have no idea in how to automate generate curves in between these obstacles and test it rather than manually using number slider.

After getting curves that not touching any obstacle, my logic is to select the one which is closest to the original line.

I have been looking at Galapagos but not sure it is the way to auto generate offset curves...

I have attached the files of 3dm and GH...

I hope someone can really give me some hints in achieving so or get me started...

I m so sorry that the GH I attempt is missing some important part.. but I really dont have any one to ask and I dont even know what to start search with....

Thank you so much in advance if you guys can give me some help....

Best regards,

Adrian

Attachments:

Avoid Intersection2.3dm, 63 KB
Avoid Intersection.gh, 11 KB

Replies to This Discussion

Permalink Reply by Hyungsoo Kim on October 10, 2017 at 7:17am

Hi.

Something like this?

Attachments:

AvoidIntersection_re.gh, 22 KB

Permalink Reply by Adrian Yiu on October 10, 2017 at 12:10pm

Thank you very much for your suggestion.

However, the result from it is rather close to the obstacle rather than the original line.

I have tried the similar logic but also tried to link other obstacle as well. In which i have replace the circles in a polyline instead. But i found it different in getting the closest point to measure to make the correct offset.

I have also attached an image of the imaginary result...

I have also attached the updated files.

Thank you very much for helping me. It is really a great start to learn all these!

Attachments:

Avoid Intersection3.3dm, 155 KB
Avoid Intersection 2.gh, 17 KB

Permalink Reply by Hyungsoo Kim on October 10, 2017 at 4:06pm

Sorry, I don't understand what you mean. In my file, have you ever used tolerance setting slider grouped red? And If you add obstacles arbitrarily, then there might be no general solution.

Permalink Reply by Adrian Yiu on October 11, 2017 at 8:08am

Thank you Hyungsoo Kim,

I have tried to take it further and develop the attached one.

It is successful when it is putting one set of lines at a time. like this: