Polycurve Containment Test

Is there a way to check if a polycurve can contain another plolycurve? I have Building pads as polycurves and i want to check if these building pads can contain different floorplans. is there a way to check that?

Polycurve containment test as one method.

thats for polygons not polycurves

[&] ObjectList.GroupByContainer from Ampersand does this: “Sort a set of objects into groups using their location points by their inclusion in a set of given list of containers. Containers must be solids, closed polygons, polycurves. Objects and points not included are returned separately.”
GroupByContainer

where is that node located

See the Ampersand package

I dont understand how to use it

See here:

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i dont think that this node does what im trying to do

How would we know if you don’t send screenshots, illustrations and references?

I have a list of floorplans(FP in image) as polycurves and I want to see which ones can fit inside the building pads (BP in image) which are also polycurves.

So convert the polycurves to polygons… the ampersand package is likely a better bet though.

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Can someone please help me to use the “List.GroupByContainer” node from “Ampersand”? I’m trying to find the surfaces that are within the polycurve I have and the ones that are not. However, it doesn’t seem to be working correctly. Am I doing something wrong? Thanks for your help!

Please note that I want to preserve the geometry of my polycurve as it also contains curves (not only straight lines).

Hi @JacobSmall
How do we convert (or approximate) a polycurve to a polygon? I mean is there a node or package for it or you meant script it out.
Also, I checked the Ampersand package, I could not find a method similar to polygon’s containment test.

Polygon containment test should be an out of the box node in the library - this thread is 5+ years old so some of it will be well outdated.

To convert a polyline to a polygon you’d do something along the lines of this:
Polycurve.Curves > Curve.StartPoint > Polygon.ByPoints. I do not know of a package which does these for you, but with only 3 steps I’m not sure why you’d need one either. If you get stuck with it please start a new topic though.

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I have some curves(not straight lines) in my polycurves. So I used PointsAtEqualSegmentLength to approximate it with some midpoints and then converted everything to polygons.

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If you’ve got curves, then Surface.ByPatch > Geometry.DoesIntersect may be a better solution. This will have the added benefit of being able to test shapes with an opening in the middle.

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That’s great to know. I agree and the shapes will likely have openings.

Hi again @JacobSmall
I have a floor with opening in Revit and I have been able to get the polycurves of outer outline and the opening.

What would be the best way to have a surface with opening in dynamo. Would you use TrimWithEdgeLoops? Or is there a direct way for bringing the floor into Dynamo as a patch?