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Thread: Proboolean operation gone wrong

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    Default Proboolean operation gone wrong

    I tried to extract a box from my wall to create an opening, using the proboolean tool, but it didnt work. I am using 3ds max 2016, and all tthe probooolean options are set at default. the box disappeared without creating an opening.

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    Senior Member redvella's Avatar
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    Default Re: Proboolean operation gone wrong

    proboolean is not the most intuitive in 3dsmax, if you really want to boolean use the standard boolean tool it seems a bit more stable.

    I would recommend just cutting into the geometry or building the wall around the opening to begin with as booleans require some understanding as to how geometry intersects - basically any box that intersects with the edge of another box will have trouble understanding where to weld the geometry back together (or disappear), it also can break your geometry after collapsing back to mesh as it has to guess where to weld vertices and can pick a vertex which isnt ideal. Trying this on anything curved can also cause facets in the geometry and be more difficult to clean up than model correctly in the first place.

    3dsmax boolean tools are far from anything you might have seen such as Alexey Vanzhula's Houdinis Direct Modelling Plugin - this was created with boolean workflow in mind and is very well optimized for this kind of workflow - not as much in 3dsmax.

    http://cgpress.org/archives/direct-m...-released.html
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    Default Re: Proboolean operation gone wrong

    i tried using the boolean tool, but the result opening still needed to be caped in the inside walls, which means more work to do. is there a settings or way of using the proboolean or boolean tool such that i dont have to do more edits to the resulted opening?

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    Senior Member redvella's Avatar
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    Default Re: Proboolean operation gone wrong

    make sure your intersecting box (the one you want to cut out) is all the way through the geometry.

    example:
    box intersecting all the way through the wall


    boolean operation


    box NOT intersecting all the way through the wall
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    Default Re: Proboolean operation gone wrong

    The box went all through still no result. It's either the box disappears or the wall am trying to open dissapears and leaves a cut out of the box. Still no opening. What might be wrong?. All settings are at default.

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    Senior Member redvella's Avatar
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    Default Re: Proboolean operation gone wrong

    like I mentioned earlier, make sure both boxes edges are not aligned - if they are one will disappear, just bring the box down a little further than the wall. Any edges/vertices that are on the same axis or intersecting will cause boolean to function in an odd way.
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    Default Re: Proboolean operation gone wrong

    My scene is like this. I have various walls, and I need to create door and window openings, so I created boxes, autogrid on the walls and extruded. Outside these walls, I tried the probooleon command and it worked, but on my walls where I want to create door and window openings, the command is not working. It is either the box dissapears, my wall dissapears or I get an intersection of a part of the box. The box intersected the walls and its not at the edge. I need a solution

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    Default Re: Proboolean operation gone wrong

    Did you check the normals of the box and wall? I usually reverse the normals of one of the objects when proboolean starts to misbehave, I also reset the xform sometimes.

    In my experience when boolean objects start disappearing it's a sign of bad geometry.
    Last edited by ahmeds; 5 Days Ago at 07:49 AM.

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    Default Re: Proboolean operation gone wrong

    make sure you are selecting the 'subtraction' operation. Default is 'Union'

    As a side note and bit of a critique, if capping/bridging open edges after the operation is a deal breaker for you and 'more work', Max may not be your thing.
    Last edited by John Dollus; 5 Days Ago at 08:15 AM.

  10. #10
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    Default Re: Proboolean operation gone wrong

    I know its subtraction. And my default is subtraction. Capping the open edges does not cap well. Its a door and window opening, the opening is not bounded by four edges so capping is distorted and even bridging. Then please where can I see the normals and reset the xforms

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