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I am not completely new to Blender, but I'm actually on a project of interior design visualization where I would like to create a material that would allow me turn any surface into this kind of paper lamp.

Its basically wrinkled paper extruding from the volume, never intersecting with each other, slightly opalescent, with a light source inside (which could obviously be another object).

I have no idea where to start from. I guess it should involve procedural material rather that using an image, but I'm not sure how to make the lines protrude neither how to generate them and be able to modify their parameters

I'd be really grateful if someone could show a way into this problem. Cheers!

enter image description here

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  • $\begingroup$ This doesn't look like something that could be realistically simulated with materials alone, this will require some geometry, in fact it may actually need some serious modelling to look good, unless there wont be any closeups and it will only be viewer from afar. $\endgroup$ – Duarte Farrajota Ramos Feb 3 '17 at 1:30
  • $\begingroup$ Thanks for your reply, thats what I was fearing. How where could I start with geometry? by drawing geometry and projecting it onto the target surface? $\endgroup$ – Healthwave Feb 3 '17 at 8:05
  • $\begingroup$ Yesterday I was playing around with some modifier combinations involving a Decimate + Solidify + Subsurf, and achieved some interesting results but not close enough to the reference picture. Might try again today but won't be able to actually post it here until far later tonight. $\endgroup$ – Duarte Farrajota Ramos Feb 3 '17 at 13:46
  • $\begingroup$ that's very kind of you, take your time $\endgroup$ – Healthwave Feb 3 '17 at 14:58
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Ok, so here's what I could come up with. This is what I could achieve with materials only. Not good enough for closeups, but perhaps enough for far-off objects or to save resources.

Materials Only

With modelling I got to this. It's not perfect, couldn't figure out a way to automatically make them not intersect, but its a reasonable time/effort/fidelity ratio.

Modelling

Star of with an Icosphere, subdivide it enough, for the desired level of detail, then add a Decimate modifier.

Icosphere

Apply the decimate modifier, enter Edit Mode and in Edge Selection Mode with the Random Select operator select any number of edges around 50% to 60%.

Bevel those edges, then extrude them outwards with Alt + E > Region (Vertex Normals).

Bevel

Extrude

Add a Subsurf modifier on top, and you are good to go. Material is the same as above without all the texture work.

Subsurf and Material

Additionally you may use Proportional Edit with a Random falloff type, to scale all vertex outwards, and/or rotate them slightly, and give it a more irregular look. Use a fake loose vertex, placed at the center of the sphere, selected for scaling, then use the 3D Cursor as center of transform and increase the influence radius as necessary.

Proportional Edit

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