How to rotate an selection/ area?

Replies to This Discussion

Permalink Reply by David Rutten on June 16, 2016 at 3:31am

How are these 'areas' defined? Are they objects in Rhino? Geometry in Grasshopper? If the former, do you want to rotate objects in Rhino itself using Grasshopper?

How are the rotations defined? Axis and angle? Start and end direction? Some sort of textual data?

Permalink Reply by maka on June 16, 2016 at 5:29am

Yes, they are objects in Rhino which i want to move with grasshopper. at the moment i`m using the 3d rotation in grasshopper which works well (see the third pic).

My problem is, if i rotate it like i do, i have to choose specific geometries and then the rotation principle of the rubiks cube doesnt work. Instead of choosing specific geometries for a specific rotation, i would like to define an area, and when object ar situated in my definde area, they should move in my defined rotation.

is that more understandable?

Attachments:

• 1.JPG, 155 KB
• 2.JPG, 141 KB
• 3.JPG, 41 KB

Permalink Reply by David Rutten on June 16, 2016 at 7:43am

Ah I see. You want to define a region (either 2D or a 3D volumetric region) and all objects in Rhino which are either fully inside or intersect with this region should be affected.

You can use Geometry Pipeline to import all shapes, and then figure out which ones qualify for your transformation. You can cull the rest and then transform the remainder.

I do not know what your rejection/acceptance demands are, it depends on whether you want a 'window' (ie. fully inside) or 'crossing' (ie. intersecting) selection, and how your selection regions are defined.

Permalink Reply by maka on June 17, 2016 at 2:26am

"You want to define a region (either 2D or a 3D volumetric region) and all objects in Rhino which are either fully inside or intersect with this region should be affected."

Right, it should be a 3D volumetric region and only objects which are fully inside should do the roatation