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Using UVs to animate the shapes on the screen would be hard and tedious so i want to use geometry to impact which dots light up

the compositor won't really help as it pixelates where the camera is facing rather than where the mesh is facing

when i used animation nodes the matrix wouldn't parent to my plane, and the rotation only affected the induvidual bounds of each sphere (which is what i used to make the leds)

something like this effect: https://blenderartists.org/t/animatable-pixel-matrix-display/1126033/11

Can i make a mesh light up when something touches it?

^ it's better explained in this new one i made

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  • $\begingroup$ Hello and welcome :). What do you mean by *using UV map would take too long? $\endgroup$
    – jachym michal
    Commented May 8, 2020 at 9:27
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    $\begingroup$ Related: How to give an image or video a TV screen effect?, How to achieve a realistic material for an operative phone screen? $\endgroup$
    – jachym michal
    Commented May 8, 2020 at 9:28
  • $\begingroup$ a uv map would be tedious to animate, i would rather use planes to change which "pixels" should light up $\endgroup$
    – Notsparky
    Commented May 8, 2020 at 9:32
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    $\begingroup$ Any reason why you do not want to use the compositor? $\endgroup$
    – brockmann
    Commented May 8, 2020 at 9:57
  • $\begingroup$ it pixelates based on where you're looking, not where it's facing. The pixelation will not face where the plane is facing, only the camera $\endgroup$
    – Notsparky
    Commented May 8, 2020 at 10:01

3 Answers 3

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I still think UV map could be quite handy:

enter image description here

  1. Scale the UV maps into individual pixels by scaling them to 0
  2. Connect the UV map to Image texture
  3. Use Mapping node to animate it

enter image description here

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  • $\begingroup$ i was hoping to find one that didn't need an image texture and just used an emissive material, each 'pixel' would be impacted by a plane or geometry, much like how dynamic paint works, however the only problem with that is that it's slow $\endgroup$
    – Notsparky
    Commented May 8, 2020 at 9:59
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    $\begingroup$ thanks for trying though $\endgroup$
    – Notsparky
    Commented May 8, 2020 at 10:00
  • $\begingroup$ Hey :). Consider adding your comment to the original post - it makes it much more clear. $\endgroup$
    – jachym michal
    Commented May 8, 2020 at 10:32
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    $\begingroup$ done and updated $\endgroup$
    – Notsparky
    Commented May 8, 2020 at 16:11
  • $\begingroup$ is there any way i can make a second camera a texture output without rendering? if so then i can use that along with this to make the effect $\endgroup$
    – Notsparky
    Commented May 9, 2020 at 7:39
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I'm not entirely understand your question, but i think you need to sample texture? Then you can use Texture Input node. which is available AN+EN Branch.

enter image description here

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Color with falloff | Animation nodes 2.1 in blender 2.81a

this was the effect that i was looking for (the one posted in the answers)

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