Boundary which shows up as red if something enters it

Grasshopper
1

hi guys I want to make a 2D area which shows up red if any other 2D geometry enters into it’s space

3

Thank you so much helps me a lot!!! <3

4

If you’re responding to me, I deleted the post because i realized that it only worked for intersections. If the "intruder’ is entirely within the boundary, it doesn’t activate. if that’s OK with you, then fine, but there is a better way of going about it. See below.

5

This works whether at least one object is intersecting or entirely within the boundary.

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Canvas at 00;56;30.png1045×809 207 KB

Red Alert!.gh (10.5 KB)

6

Really do appreciate it thank you so much!

8

Do you know why mine doesn’t work at all? :frowning:

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Screen Shot 2018-10-30 at 1.08.20 am.png881×287 34.8 KB

9

and I know I switched around the swatch colours but still doesn’t work :frowning:

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Screen Shot 2018-10-30 at 1.10.47 am.png866×270 34.6 KB

10

Can you upload your version, and internalize the geometry? Thanks.