I'm trying to get a 2D grid where I can set/reset each pixel to air/dielectric values. I tried using a fixed input-epsilon-file but I need to use an isotropic material, which is not supported by such option. I tried by making an object list of blocks corresponding to the "on" pixels, but I can't get them to be the size of a single pixel. Is there a way to do so, or to access each pixel in the grid?
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