Grasshopper - Unroll - ReRoll?

[Gerrard_Hickson]

Hi all,

I’m working on a project that will allow me to add mesh patterns to surfaces - So far, I have single surfaces working OK, but I’d like to allow multiple surfaces. The plan is to unroll the surfaces to a flat surface, modify the surfaces, then re-roll (terminology?) the surface to the original position while maintaining the modifications.

In Inventor world, we’d call this unfold/refold.

2 problems:

• I can’t see a way to access the transform operation that took place during the ‘Unroll’ component.
• I can’t find a component, that undoes the ‘Unroll’ transform.

Any suggestions?

[inno]

is there an Unroll component in gh? I think it comes from a plugin?

what kind of changes are you doing to your unrolled polysurface that requires to be unrolled and couldn’t be done in its initial configuration? it looks like you have all planar surfaces?

[laurent_delrieu]

Here is a discussion with various ways

Need Inverse Transform for Unroll Polysurface

Components are not included in this or old release. It is a special edition that is eXPerimental. For simple surface you could used mesh map. [image] I use my Mesh Map component because it also look at the Z but if you don’t need Z, bimp, displacement you could use the one from Kangaroo or Ngon, the last is working with curve. [image] reroll.gh (84.5 KB)

[Gerrard_Hickson]

@inno

is there an Unroll component in gh? I think it comes from a plugin?

I’m using ‘Unroll Brep’ I can’t find which plug-in allows it. I thought it was Grasshopper…

@inno

what kind of changes are you doing to your unrolled polysurface that requires to be unrolled and couldn’t be done in its initial configuration?

Actually - this is a good point. I’ve used the Z vector in some places, but that could be replaced with a Normal vector… I’ll look into this more.

@laurent_delrieu

Here is a discussion with various ways

Thanks for that.

Since posting, I also found the ‘surface morph’ tool… Will explore all options more.

Thanks for the advice.