Mapping a rectangular grid onto a surface

Hi guys,

I have been trying to map a rectangular grid onto a triangular surface but i get a flipped surface (please see image).

Would you have any idea why this is happening?

many thanks,

Arthur

Attachments:

MappingRecgrid.ghx, 187 KB

Replies to This Discussion

Permalink Reply by Giulio Piacentino on May 23, 2010 at 3:10pm

Nice method Luis!

- Giulio

Permalink Reply by Tushar Sharma on May 23, 2010 at 6:21pm

hey guys,
i tried but y is it giving this kinda result? i closed the triangle with the same point, but the rectangular grid is not being mapped properly..i eman not as i wanted.. can i not map it in the way that is doesnt got to one end? instead it is perpendicular to the longest edge?

Permalink Reply by Tushar Sharma on May 24, 2010 at 7:19am

Hey giulio,
This is how i wanted to map .. sry for the trouble...

Permalink Reply by Giulio Piacentino on May 24, 2010 at 10:41am

Hey Tushar,

thank you for the sketch, now I see what you meant. This is an example of area trimming, not of mapping. Here is a definition using region intersection. Please open it in Grasshopper 0.6.0059, as in Grasshopper 0.7.0014 the region components do not work just yet.

I hope it helps,

- Giulio
_________________
giulio@mcneel.com
McNeel Europe, Barcelona

Attachments:

trimmed-grid.ghx, 114 KB

Permalink Reply by Tushar Sharma on May 24, 2010 at 11:56am

hey giulio,
thank you.. i wanted exactly what u sent.. but i have one problem in that, can i get cells from the result like the 2nd image? i had the same problem with creating cells but i didnt get any suggestions on that.. i even tried to explode the brep and from vertices made a polyline, but didnt get to the result..can u please let me know abt it..

thank u

Permalink Reply by Tushar Sharma on May 24, 2010 at 12:22pm

i tried this as well..

Permalink Reply by Giulio Piacentino on May 25, 2010 at 2:06am

Hey Tushar,

offsets in three dimensions work given a plane. Just supply the triangular polyline to the "P" input of the offset component. It will be automatically transformed into a plane and hopefully it will start working.

I hope this is helpful, otherwise could you please consider opening a new thread with this new subject? That way it will be easier for other people to find, too.

- Giulio
_________________
giulio@mcneel.com
McNeel Europe, Barcelona

Permalink Reply by Tushar Sharma on May 25, 2010 at 2:11am

hey giulio,
yes it started working..didnt realise i had to assign a plane..thanks a lot..