Extract x,y,z coordinates of surfaces in Rhino

Replies to This Discussion

Permalink Reply by Danny Boyes on June 10, 2014 at 8:19am

Hi Sushant, if you want to use Grasshopper to do this then you can reference the Surfaces in Rhino and then extract the Vertices.

BRep Param = Set Multiple Breps

BRep Param --> Deconstruct BRep

Deconstruct BRep (V) --> Panel

Permalink Reply by Danny Boyes on June 10, 2014 at 10:28am

If you give me an example of the MACRO layout for Ansys and an example of the model you want translated into this format I can be more helpfull

Permalink Reply by Danny Boyes on June 10, 2014 at 11:21am

Here you go.

Permalink Reply by Peter Ayad on June 10, 2014 at 11:23am

hi Sushant,

have you considered extracting the coordinates and write them in (csv) file or (xml) file ? 

you can then read the file in any text editor, and you can also read it as a table in excel, like this:

Attachments:

• to csv.gh, 3 KB

Permalink Reply by Danny Boyes on June 10, 2014 at 2:04pm

If my understanding is correct the tricky bit here is identifying unique nodes. 

For instance in your example above panel 3 node 2 is the same as panel 4 node 0. Therefore when defining the elements it would have the same id in each.

Permalink Reply by Danny Boyes on June 10, 2014 at 4:18pm

I'm at home now using my Tablet so will have to make do with GDL

Brep --> (S) Iso Trim

Brep --> (I) Divide Domain 2

Divide Domain 2 --> (D) Iso Trim

Iso Trim -->  Deconstruct Brep

Deconstruct Brep (V) --> Create Set

(L) Create Set: Flatten = True

Deconstruct Brep (V) --> (D) Find Similar Member

Create Set (L) --> (S) Find Similar Member

Deconstruct Brep (V) --> (P) Point to Numbers

(P) Point to Numbers: Graft = True

Find Similar Member (i) --> (D1) Merge

Find Similar Member (i): Simplify = True

# The (i) output is the N in the macro

(D1) Merge: Graft = True

Point to Numbers (N) --> (D2) Merge

Point to Numbers (N): Simpify =True

# The (N) outputs are the x,y,z components of the macro

Create Panel[1], Panel[2], Panel[3]

Panel[1] = ,

Panel[2] = E,

Panel[3] = N,

# start to combine all the parts together

Panel[1] --> (J) Text Join[1]

Find Similar Member (i) --> (T) Text Join[1]

Merge --> (T) Text Join[2]

Panel[1] --> (J) Text Join[2]

Panel[2] --> (A) Concatenate[1]

Text Join[1] --> (B) Concatenate[1]

Panel[3] --> (A) Concatenate[2]

Text Join[2] --> (B) Concatenate[2]

Concatenate[2] --> (D) Shift Paths

Shift Paths --> Tree Statistics

Tree Statistics (C) --> (C) Series

Series --> Int

Create Panel[4], Panel[5]

Panel[4] = "! Panel #"

Panel[5] = 0

Panel[5] = 1

# make sure Panel[5] is set to not multi-line

Panel[4] --> (A) Concatenate[3]

Int --> (B) Concatenate[3]

(B) Concatenate[3]: Graft = True

Concatenate[3] (R): Simplify = True

Shift Paths --> (L) List Insert

# make sure the next hooks are in order

Concatenate[2] --> (I) List Insert

Concatenate[3] --> (I) List Insert

Panel[5] --> (i) List Insert

List Insert (L): Flatten =True

List Insert --> Panel[6]

Panel[6]: Stream Contents =True

Permalink Reply by Danny Boyes on June 11, 2014 at 4:39am

Here's the definition

Attachments:

• AnsysMacro.gh, 35 KB

Permalink Reply by Danny Boyes on June 11, 2014 at 7:19am

It might have something to do with The fact that I am dividing up the surface into a 10 x 10 grid as an example!

Just remove everything up to the Deconstruct Brep component which gives you the vertices of your referenced surface(s)

Permalink Reply by Danny Boyes on June 11, 2014 at 9:00am

Does this fix it?

Otherwise upload a 3DM for me to look at where the issue occurs

Attachments:

• AnsysMacroSorted.gh, 34 KB

Permalink Reply by Danny Boyes on June 11, 2014 at 9:27am

No problem

Permalink Reply by Danny Boyes on June 12, 2014 at 1:12pm

Change the start of the Series Component

(S) Series = 1

Permalink Reply by Danny Boyes on June 12, 2014 at 1:59pm

Sorry I'm with you now.

#Set the output (i) to add 1 to its value by right clicking on it and selecting Expression 

Find Similar Members (i): Expression = X+1

 

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