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Asked: 2026-05-23T09:59:00+00:00

Considering the following : lalist = {{{{1, 1}, 1}, {{3, 3}, 1}, {{5, 5},

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Considering the following :

lalist = {{{{1, 1}, 1}, {{3, 3}, 1}, {{5, 5}, 1}},
          {{{1, 5}, 1}, {{3, 3}, 1}, {{5, 1}, 1}}}

enter image description here

Row[{
  Graphics[{
            Opacity[0.5],Red, 
            Disk @@@ lalist[[1]]}, 
            Frame -> True],
  Graphics[{
            Opacity[0.5],Blue, 
            Disk @@@ lalist[[2]]}, 
            Frame -> True]}
    ]

enter image description here

  • Is it possible that I plot the Blues
    Disks “behind” the red ones in a 3 D
    plot ?

Below is not what I need :

enter image description here

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1 Answer

  1. Editorial Team

    Like this?

    Graphics3D[{{Texture[
 Graphics[{Opacity[0.5], Blue, Disk @@@ lalist[[2]]}, 
  Frame -> True]], 
 Polygon[{{-1, -1, -1}, {1, -1, -1}, {1, 1, -1}, {-1, 1, -1}}, 
 VertexTextureCoordinates \[Rule] {{0, 0}, {1, 0}, {1, 1}, {0, 
    1}}]}, {Texture[
 Graphics[{Opacity[0.5], Red, Disk @@@ lalist[[1]]}, 
  Frame -> True]], 
Polygon[{{-1, -1, 1}, {1, -1, 1}, {1, 1, 1}, {-1, 1, 1}}, 
 VertexTextureCoordinates \[Rule] {{0, 0}, {1, 0}, {1, 1}, {0, 
    1}}]}}, Lighting \[Rule] "Neutral"]

    enter image description here

    Lots of them with opacity .2:

    tab = Table[{Opacity \[Rule] .2, 
Texture[Graphics[{Opacity[0.5], Blue, Disk @@@ lalist[[2]]}, 
  Frame -> True]], 
Polygon[{{-1, -1, z}, {1, -1, z}, {1, 1, z}, {-1, 1, z}}, 
 VertexTextureCoordinates \[Rule] {{0, 0}, {1, 0}, {1, 1}, {0, 
    1}}]}, {z, -2, 2, 1}];
plt = Graphics3D[{tab}, Lighting \[Rule] "Neutral"]

    enter image description here

    and 400 don’t seem to be much of a problem in terms of speed (you can easily modify the code above to see it).

    EDIT: OK, just to be silly, try this

    Dynamic[Graphics3D[{{Texture[#], 
  Polygon[{{-1, -1, -1}, {1, -1, -1}, {1, 1, -1}, {-1, 1, -1}}, 
   VertexTextureCoordinates \[Rule] {{0, 0}, {1, 0}, {1, 1}, {0, 
      1}}]}, {Texture[Rotate[#, \[Pi]/2]], 
  Polygon[{{-1, -1, 1}, {1, -1, 1}, {1, 1, 1}, {-1, 1, 1}}, 
   VertexTextureCoordinates \[Rule] {{0, 0}, {1, 0}, {1, 1}, {0, 
      1}}]}}, Lighting \[Rule] "Neutral"] &@Binarize[CurrentImage[]]]

    which gives

    enter image description here

    (or something like that), rotatable, updated in real time etc.

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