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ProBuilder Pro Builder - StackOverflowException with Boolean Tool

Discussion in 'World Building' started by MlleBun, Mar 7, 2020.

  1. MlleBun

    MlleBun

    Joined:
    Sep 19, 2017
    Posts:
    125
    Some of us are having those errors when Applying Boolean with the experimental tool. Is this bug logged please?
    Related thread : https://forum.unity.com/threads/pro-builder-boolean-removed.800160/
    Code (csharp):
    1.  
    2. StackOverflowException: The requested operation caused a stack overflow.
    3. System.Collections.Generic.List`1[T].set_Capacity (System.Int32 value) (at <437ba245d8404784b9fbab9b439ac908>:0)
    4. System.Collections.Generic.List`1[T].EnsureCapacity (System.Int32 min) (at <437ba245d8404784b9fbab9b439ac908>:0)
    5. System.Collections.Generic.List`1[T].Add (T item) (at <437ba245d8404784b9fbab9b439ac908>:0)
    6. UnityEngine.ProBuilder.Experimental.CSG.CSG_Plane.SplitPolygon (UnityEngine.ProBuilder.Experimental.CSG.CSG_Polygon polygon, System.Collections.Generic.List`1[T] coplanarFront, System.Collections.Generic.List`1[T] coplanarBack, System.Collections.Generic.List`1[T] front, System.Collections.Generic.List`1[T] back) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Plane.cs:66)
    7. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:112)
    8. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    9. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    10. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    11. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    12. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    13. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    14. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    15. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    16. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    17. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    18. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    19. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    20. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    21. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    22. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    23. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    24. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    25. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    26. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    27. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    28. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    29. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    30. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    31. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    32. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    33. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    34. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    35. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    36. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    37. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    38. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    39. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    40. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    41. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    42. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    43. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    44. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    45. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    46. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    47. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    48. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    49. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    50. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    51. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    52. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    53. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    54. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    55. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    56. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    57. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    58. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    59. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    60. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    61. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    62. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    63. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    64. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    65. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    66. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    67. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    68. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    69. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    70. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    71. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    72. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    73. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    74. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    75. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    76. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    77. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    78. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    79. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    80. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    81. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    82. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System.Collections.Generic.List`1[T] list) (at Library/PackageCache/com.unity.probuilder@4.2.3/Runtime/MeshOperations/CSG/Classes/CSG_Node.cs:120)
    83. UnityEngine.ProBuilder.Experimental.CSG.CSG_Node.Build (System<message truncated>
    84.  
     
  2. MasonWheeler

    MasonWheeler

    Joined:
    Apr 2, 2016
    Posts:
    121
    I'm seeing this too. If you haven't already, please log a bug for it.
     
  3. BannedImp

    BannedImp

    Joined:
    Jul 31, 2019
    Posts:
    3
    You know...it's funny ProBuilder was BUILT around CSG. Which is Boolean Operations, and yet they were always "might work, might not"..and now just a "Nope"
    No offense, but this is just aggravating as all @#$%^&
    Just about every other True CSG (not using shader tricks that don't actually change the mesh) all have flaws in Unity. Why is this??
     
    BrainSlugs83 likes this.
  4. Noxirus

    Noxirus

    Joined:
    Sep 18, 2019
    Posts:
    20
    Hey,

    I was having a similar issue where I was trying to cut a cylinder into another cylinder. Figured out the issue was too much geometry (I imagine too much vertices makes calculating subtraction a bit too much). I figured out how to remedy this by making the object I was subtracting from my main object have fewer sides to it. Hope this helps!

    -Noxirus
     
    Last edited: Jul 21, 2020
  5. BannedImp

    BannedImp

    Joined:
    Jul 31, 2019
    Posts:
    3
    There has got to be a better way to perform a boolean operation on the mesh. Probuilder just isn't doing the job.
     
  6. 3Lighthouses

    3Lighthouses

    Joined:
    Sep 15, 2009
    Posts:
    10
    This is happening for me too. It worked in previous versions. I'm in a HDRP project, if that makes a difference.
     
  7. OldLegWig

    OldLegWig

    Joined:
    Mar 18, 2018
    Posts:
    95
    same here. boolean operations reliably crash unity now.
     
    MlleBun likes this.
  8. HunterAhlquist

    HunterAhlquist

    Joined:
    Oct 6, 2013
    Posts:
    22
    Having this issue too.
     
  9. BrainSlugs83

    BrainSlugs83

    Joined:
    Jun 18, 2015
    Posts:
    18
    Yeeppppp.... 2019.4.9f1 -- Regular 3D project, Probuilder CSG ops is borked with a stack overflow.
     
  10. lmml

    lmml

    Joined:
    May 2, 2020
    Posts:
    6
    It also happens to me right now. I need a csg api to get intersect some meshes . Any idea ???
     
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