Count identical breps in a list

[Gaël_Michon]

Hello everyone,

I hope that the topics hasn’t been already discussed but here is my question. I have a list of breps and I’m trying to count the number of identical breps. My idea is to decompose each breps and compare the length of each edges. Therefore I use the component “CreateSet” and “MemberIndex” which works great when I compare the volume of breps (but not precise enough). However I don’t get the expected result as shown on the example below.

Count identical breps example.gh (11.2 KB)

There may be a better way to do it but my knowledge of Grasshopper prevents me from seeing further.

Anybody got any ideas?

Thank you !

[ftzuk]

Struggling to understand your expected results.

Also the Member Index count is giving you exactly what it’s meant to: There’s 1 x ZERO value, 1 x ONE value, 1 x TWO value etc.

[MonkeyFace]

don’t know if you’ve seen these other posts but they might offer you something…

Comparing two sets of Breps

Instead of just using the centroid, you could also check if the volume is the same. I’m not sure how to check the vertices especially if they are maybe not in the exact same orientation. When a bake name is used, previously baked objects with the same name are overwritten. All objects need a name so they can be referenced and sorted in the correct order.

Checking and finding the identity of solids/breps

Using finer coding techniques (i.e. switching from raw Tequila to Margarita) here’s the trad update: object_equality_V5A.gh (131.0 KB) [Screen%20Shot%20074]

sorry if you’ve seen them already.

[Gaël_Michon]

Thank you for your answer and sorry if I’m not being clear.

On the input there is 2 identical list [0;1;2] and 1 different list [3;4;5]. I wish that the results would show me that there are 2 identical lists and 1 different list (left pannel of the expected results) and that these lists are respectively the [0;1;2] and the [3;4;5] (right pannel of the expected results).