Grasshopper

algorithmic modeling for Rhino

Hi,

I've been trying to add glazing to my honeybee surfaces for an apartment building (L1) and about 25% of the windows don't show up after I've added them to the surface. 

I've tried recreating the windows in Rhino many times by drawing a new surface over the top of the 'wall' surface and then changing the size of the new surface to be the size of the window, (to make sure that I have the window on the same plane as the wall) but with no luck. 

Am I missing something simple here? Or am I just not getting the windows to get on the same planar surface as the walls? - If that is the case is there an easy way in Rhino to ensure that the window is on the same plane as the wall -  Its driving crazy!

I've attached my Rhino and GH file (please excuse them, they are a bit of a messy work in progress)

Thanks

Chelle

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GH file attached

Attachments:

Chelle,

I believe this can be a problem of tolerance and being exact in the modeling.

See attached files. In the rhino one you can see, if you zoom in very close, that both window and wall are not planar. I isolated the problematic cases in different layers so you can see better.

Check your tolerance units and/or fix the model as the attached files.

Hope this helps ... a bit.

-A.

And now the files.

-A.

Attachments:

Hi,

I've changed all the tolerances in Rhino to 0.0001 but I still can't get the windows that I draw in Rhino to be planar with the zone surface.

I've even tried baking the surface from GH to Rhino and then drawing a new full window surface around the points of the baked surface and then changed the size to match the required window size and I still can't get the windows to get on the same planar surface. 

This is driving me crazy and wasting many hours. Do you have any further advice about how to get the windows onto the stupid zone?


Chelle

Attachments:

Hi Chelle:

Your file is working fine now. I don't know what was the problem but what I did is disconnected and reconnected the wires that caused the errors. Please see the attachment. Thanks,

Mohammed

Attachments:

Hi,


My problem isn't really with the GH file as such (although I couldn't work out why everything went red on the add glazing component either - incidentally when I opened your file it was all red again!).

Instead my biggest problem is that I can't get the glazing to add to the surfaces using the add glazing component. I don't know what to do to get the glazing to add to the surfaces. Could someone please outline the steps that I should take in Rhino and Honeybee to add a window to a specific surface. Currently I have been (i) creating a planar surface and then (ii) extruding that surface to make a closed geometry/zone in Rhino and then (iii) drawing a new surface over the top of the particular surface that has a window in it and then (iv) changing the size of that new surface to match the size of the window in the building. I then (v) import the zone from (ii) into grasshopper and then (vi) decompose it into surfaces and then turn the window into a brep and add it to the surface using the add glazing component. This process seems to work for about 75% of the windows in the building, but I can't get the other 25% of windows to add onto the surface in grasshopper/honeybee. I am sure it is because the window and the surface are not planar, but I don't know how to check this or to make them planar in Rhino. Can someone please tell me how to do this? 

I've simplified the GH file to only show one apartment as to show how I can't get the windows to come onto the surface!

Attachments:

Chelle,

It wasn't easy ... but neither too difficult.

First, i didn't used your last file. Instead the ones from yesterday. I didn't pay attention that your model is in millimeters, so i translated to meters. For energy simulations the model MUST be in meters since E+ works only in these units.

After this opening, please open the attached. I took the liberty to define the zones differently from you (see white group). Much more compact. I've found a lot of issues with many of your individual surfaces so i redefined from new the whole zones. Some of the windows where indeed a bit rotated from orthogonal and a bit shifted from the home surface. But they were just a few. it was easy to fix. Also your tolerance was to low (0.00001, or so). Sometimes too low is not good.

Didn't internalized the geometry yet, so you can see what i linked from the Rhino model.

Hope this helps and good luck.

-A.

Attachments:

Hi,

I'm still not able to add glazing to a surface in Honeybee. The problem is obviously with the way that I am drawing the windows in Rhino. To draw a window I draw a new surface around the edge of the Wall I am trying to add the window onto and then change the size of it to match the required window size. However I don't seem to be able to get my windows on the same plane as the surface/zone doing this. Can you please tell me step by step what method you use to draw the window in Rhino to get the Brep to put into Honeybee?

Use the CPlane (cp) command + the i option. Then you can define a 3 point plane (origin, x dir, and y dir).

The 3 points should be planar to the desired wall you want to define your window. Snap to endpoints so you assure you are in the wall plane.

-A.

ok, I've done all of that and I managed to get all of the windows except for 4 to attach to the proper surfaces. 

Thank you for the tips. Any ideas on what I am doing wrong with the final 4 windows. I never thought it would be this hard to get windows into the model :)

ps - thank you for showing me a cleaner way to set up the zones. It looks MUCH better. 

Attachments:

Rhino file is missing and the geometry was not internalised.

-A.

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