How to set collision groups

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  • 28 January 2021 at 22:38 #18416
    pontas
    Blocked

    Hello.

    I want to set collision groups in a scene file written in C++, like this.
    <TriangleModel group=”1″/>

    However, the constructor is protected and cannot be accessed.
    Could you tell me how to set up a collision group in C++?

    Thank you very much.

    pontas

    5 February 2021 at 10:01 #18517
    Hugo
    Keymaster

    Hey @mckysd5

    You should be able to do as follows:

    
TriangleCollisionModel* myTModel = new TriangleCollisionModel;
myTModel->setName("myCollisionModelOnTriangles");
myTModel->addGroup(1);

    Let me know if this suits you.
    Best,

    Hugo

    6 February 2021 at 15:26 #18546
    pontas
    Blocked

    Hi @Hugo

    Thank you for your reply.

    I got it!
    However, I can’t have three collision modes(Point, Line, Triangle) in one node at the same time…

    And when I try to determine the collision,
    I get a warning in MinProximityIntersection ↓
    Null distance contact between contact detected
    This causes the FPS to drop below 1…

    What is wrong？

    Thank you very much.

    pontas

    17 February 2021 at 09:02 #18696
    Hugo
    Keymaster

    Hey @mckysd5

    Even if slow, is the collision well responding?
    How many contacts can you see (activate the view option “Interactions”)?

    Are your object in collision at the beginning of the simulation?
    This must not be the case (in any simulation software).

    Are your meshes clean? (no duplicated faces)

    Are your collision settings (alarmContact / alarmDistance) properly set regarding the object size / your tolerance?

    Could you share a simple scene creating the problem?
    Could you post the full warning info you get?

    Best wishes,

    Hugo

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