Shadow logic to geometry

(blenderlight) #1

Hi.

Sorry, when it is the wrong category. I don’t know, if this is a modelling or coding question.

First I show you an image for my question:

  1. Is it possible to make a geometry object from a shadow in blender?

  2. Or is it possible to do this without a shadow? Just boolean and shadow logic etc.

Thank you very much!

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(RickyBlender) #2

what do you want to do with this ?

you can bake shadow so you get a lightmap in UV editor
it can be exported then modified to do things
may be make a new mesh out of it but to do what ?

happy cl

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#3

Does this need to be animated? If it’s just for a single image, I found a way to at least get halfway there:

  • Move the 3D cursor to the location of your light source (Shift+S / Cursor to Selected)
  • Go into edit mode on your object and select all faces
  • Press Alt+E and extrude from Individual Faces, then right-click to extrude with 0 length. This will copy all of the faces with connecting polygons in-between.
  • Scale the selected polygons from the 3D cursor

ShadowTest

This will give you a model with really messed up topology. I don’t know if there’s a way to clean it up automatically, you might just have to do that by hand. If you do that and then apply a boolean modifier, it should give you the correct result.

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