Support polyline with multiple offsets

[WindingWinter]

I posted this question at the C++ issue tracker-- I'm not sure whether this or that place is the right place to post. Anyway feel free to close the one that is not relevant.

The question is this: Is there any plan to support variable offsets? Something like NetTopologySuite VariableBuffer. Currently only uniform offset can be done throughout all the vertexes on the polylines.

[jbuckmccready]

I think the algorithm used by this library would not work with variable offset distance because distance checks are used to remove invalid/collapsed offset parts (global invalid segments), I am not sure what that means when comparing distances between two variable offset distance segments - it would definitely have to be modified to get it to work. There may be other modifications required to make the raw offset join/trim code work as well.

I currently have no plan to to work on variable offsets, but pull requests/contributions are welcome if the algorithm is implemented and working.

[WindingWinter]

Thank you for your email. Do you have any ideas on how to modify your algorithm to make it work on variable offsets?

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On Fri, Jan 7, 2022 at 4:44 AM Jedidiah Buck McCready < ***@***.***> wrote: I think the algorithm used by this library would not work with variable offset distance because distance checks are used to remove invalid/collapsed offset parts (global invalid segments), I am not sure what that means when comparing distances between two variable offset distance segments - it would definitely have to be modified to get it to work. There may be other modifications required to make the raw offset join/trim code work as well. I currently have no plan to to work on variable offsets, but pull requests/contributions are welcome if the algorithm is implemented and working. — Reply to this email directly, view it on GitHub <#19 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADENIZUGBJHJY4QYROGK4XDUUX5LDANCNFSM5LLXSDOQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[jbuckmccready]

I don't have any ideas offhand - I think it would require a fairly deep dive into it.

[FishOrBear]

Maybe something like this?

[WindingWinter]

Yes, but is that doable?

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On Tue, Apr 26, 2022 at 3:28 PM FishOrBear ***@***.***> wrote: Maybe something like this? [image: image] <https://user-images.githubusercontent.com/19372111/165245505-eeb5bb41-243a-4d30-9b82-846259b6e688.png> — Reply to this email directly, view it on GitHub <#19 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADENIZSF7P3377PJLLSI723VG6LJTANCNFSM5LLXSDOQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>