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  • Weird shadows

    Posted by Michael Kello on September 16, 2023 at 9:01 pm


    I have one question. I am modelling one kind of complicated model, which has one big n-gon (flat face) and there are too many holes and extrusions in it. Its this very annoying thing that happens some times and the result is that there are some weird shadows on it, like the phong is broken. If I reduce the phong angle, it gets fixed but every edge gets very sharp. Is there a way to eliminate this problem?

    Brie Clayton replied 1 week, 6 days ago 4 Members · 4 Replies
  • 4 Replies
  • George Charoupas

    September 16, 2023 at 10:33 pm

    Hello Michael,

    If you have the ability to upgrade (or already did) to Cinema 4D 2024, then you can use this.

    1) In Cinema 4D 2024, Maxon improved the phong tag and added a new feature. If you now select any phong, there is a new option called Style. If you select Square Area Weighted, then 99% of the time your problems gets fixed. (see 1.jpg)

    2) If you have an earlier version, the easiest thing to do to fix this issue very fast, is to select your flat surface and right click -> disconnect. For me, its the easiest approach that works most of the times. (Tip: If you want to undo that, you can select all and right click -> optimize).

    I hope these helps

  • Kouraib Abdmalek

    September 17, 2023 at 7:53 am

    Hi Michael,

    If everything is fine, the shadows will not appear on the polygons without having to modify the phong. There must be something that you missed while modeling (as happens to all of us) whether there are disconnected points, or you are missing some edges, or you have a problem with the typology. you could use the “mesh checker” to determine the location of the defect, you could also post the model here or the part that has a problem so that we can check it for you.


  • Michael Kello

    September 17, 2023 at 10:12 am

    Hello to all,

    I didn’t want to update to 2024 cause most of the plugins I use would be broken. I installed it today in my laptop and YES, this phong style is trully great and fixed the shadowing issue instantly. I don’t know why they add that now, but happy with that.
    Also disconnecting the polygon fixed the issue. Thats why when I was enabling the “Create single object” in the boole would introduce some times this issue.

    On the other hand I didn’t even know there was a mesh checker. I will have to check how it works. Might come in handy. But it’s not about missing something when modeling. Using boole too many times in a flat area is pretty common (at least for me) to create this phong-shadowing problem.

  • Brie Clayton

    September 17, 2023 at 3:30 pm

    Thank you for the solve, George!

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