Python - Manipulating Boxes

Replies to This Discussion

Permalink Reply by Giulio Piacentino on August 20, 2015 at 6:31am

Hi Aaron,

this usually means that you are attempting a for loop over a single item.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Aaron Pasquale on August 20, 2015 at 10:08pm

Hi Giulio :)  Thankyou for replying :)

I think I'm misunderstanding, is this not generally the case?  I generate the necessary elements to generate geometry, perform a series of alterations to the object, and then move on to the next one in the loop?  As I posted above, I'm trying to generate the boxes, scale, rotate, and change its color...

Thanks for your help!!

import rhinoscriptsyntax as rs
import random
import Rhino.Geometry.Box
import Rhino.Geometry.Interval

random.seed(seed)

a = []
b = []
c = []

for i in range(0,geometryCount):
    x = random.uniform(0,50)
    y = random.uniform(0,50)
    z = random.uniform(0,50)
    
    
    
    pt = rs.AddPoint(x,y,z)
    
    ptX = rs.AddPoint(x+1,y,z)
    ptY = rs.AddPoint(x,y+1,z)
    
    plane = rs.PlaneFromPoints(pt,ptX,ptY)
    
    int = Rhino.Geometry.Interval(0,size)
    
    box = Rhino.Geometry.Box(plane,int,int,int)
    
    
    xR1 = random.uniform(0,50)
    yR1 = random.uniform(0,50)
    zR1 = random.uniform(0,50)
    xR2 = random.uniform(0,50)
    yR2 = random.uniform(0,50)
    zR2 = random.uniform(0,50)
    
    start = rs.AddPoint(xR1,yR1,zR1)
    end = rs.AddPoint(xR2,yR2,zR2)
    

    rAngle = random.uniform(0,360)
    rVector = rs.VectorCreate(end,start)
    rotated = rs.RotateObject(box,pt,rAngle,rVector)
    
    
    
    a.append(start)
    b.append(box)
    c.append(rVector)
    d.append(rotated)

Permalink Reply by Giulio Piacentino on August 21, 2015 at 2:57am

Hi Aaron, please attach the file!
See "How to get help on this forum" for details.

I need to understand the nature of geometryCount., and other things.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Aaron Pasquale on September 8, 2015 at 12:11am

Gotya,

 

Here ya go.  Ideally I could manipulate the boxes in a number of ways after rotation, like I mentioned above...

 

 

Thanks again for your time!

Attachments:

• RandomGeometry_Scene.3dm, 24 KB
• RandomGeometry.gh, 10 KB

Permalink Reply by 筑梦NARUTO on September 8, 2015 at 2:30am

Hi Aaron

RotateObject() need Guid,So you need to convert the box class to guid.Check the attached file.

I hope this helps

NARUTO

Attachments:

• RandomGeometry.gh, 12 KB

Permalink Reply by Aaron Pasquale on September 9, 2015 at 12:17am

AWESOME

REALLY appreciate you taking a look at this for me, especially because I'm assuming these are kindof basic issues.

I wonder if I can ask just a couple more questions, it would be SUPER helpful.

1. I think in the past I just assumed GUID was a way to call an object ID, now I'm finding it's a form under which geometry appears in the code, which should be differentiated from classes and whatnot?

I looked through the Python primer and can't find documentation that details out the nature of GUID, (as opposed to classes etc.) could you suggest some documentation or possibly explain??

2.  In your corrections on the code in the file I posted you called a scriptcontext library yeah?  I'm just wondering about the scope and usefulness off this library... where it's coming from.

Thanks for cleaning syntax things up too,

Once again, THANKS, appreciate you taking the time :)

Aaron

Permalink Reply by Giulio Piacentino on September 9, 2015 at 8:02am

1. Guids (Globally Unique IDentifiers) are a way to uniquely "name" every object in a document. You can see this ID in the Rhino property dialog, when the geometry is in the Rhino document.

For Grasshopper, GhPython creates a parallel document (without undo's and redo's, nor preview) that provides support to every Add() or Delete() call in rhinoscriptsytax. This is because rhinoscriptsyntax, with its AddLine(), AddMesh()... always assumes a document to which the function adds. The ID is then just the "name" by which each geometry in the document goes.

Guids are a form of data structure, but they are used as a reference to geometry; they are thus not geometry per se. You could create forged IDs that do not reference any geometry, for example.

2. The scriptcontext module is a helper module for rhinoscriptsyntax. It contains references to items that are needed for the script. It is usually accessed only for the sticky dictionary (shared beween GhPython and EditPythonScript) and for the doc target (the doc variable contains a reference to the active document).

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com