[ODE] TriCollider Mesh problems ;)

[Dino Patti]

Well, this was only an example ....

I only tried this at the end because more complex tri meshes also crashed.

I actually tried to load the same object as the one from test_trimesh.cpp with 4 polygons, with the same result...

I havent't tried to make the changes to the opcode lib as one surgested, but hopefully that will work... But thanks for the tip, if anyone have anyother ideas feel free to let me know ;)))

/*Dino*/

  ----- Original Message ----- 
  From: Ed Jones 
  To: Dino Patti 
  Sent: Wednesday, September 17, 2003 2:53 AM
  Subject: Re: [ODE] TriCollider Mesh problems ;)


  When I tried to use the tricollider it fell over if I just gave it a single triangle.
  Try sending it at least 2 triangles.

  Don't know why that should make a difference, but I hope it helps.

  Cheers,
  Ed.


  Dino Patti wrote:

    Hi everyone,

    I have this problem with the tricollider, I have built this simple mesh (triangle):

    -- SNIP --
    mVertices = new dReal[9];
    mVertices[0] = 0; mVertices[1] = -5; mVertices[2] = 2; // vertex 1
    mVertices[3] = -2; mVertices[4] = -5; mVertices[5] = -2; // vertex 2
    mVertices[6] = 2; mVertices[7] = -5; mVertices[8] = -2; // vertex 3
    mIndices = new int[3];
    mIndices[0] = 0; mIndices[1] = 1; mIndices[2] = 2; // index 1

    dGeomTriMeshDataBuildSimple (mTriMeshData, mVertices, 3, mIndices, 3);
    mCollisionMesh = dCreateTriMesh(gWorld.GetSpaceID(), mTriMeshData, 0, 0, 0);
    -- SNIP --

    But the program crashes in my first loop at startup .. 
    (mVertices and mIndices are not deleted)

    I've compiled opcode in debug mode to run a stack trace and i ended up in:
    -SNIP---------> OPC_OptimizedTree.h 
    class OPCODE_API AABBCollisionTree : public AABBOptimizedTree
    {
        IMPLEMENT_COLLISION_TREE(AABBCollisionTree, AABBCollisionNode)
    };
    <--------SNIP-

    The last traceable file in my project was in my "nearCallback" function.

    Where the colliding objects where dTriMeshClass (7) and dSimpleSpaceClass (8)...

    Anyone have any clue what it could be?
    I've checked test_trimesh.cpp from the ode project, but i can't see the technical diffrence...

    /*Dino*/




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