Method removeConvexPairWithIndex

src/engine/OverlappingPairs.cpp:170–200

Remove a convex pair at a given index

// Remove a convex pair at a given index
void OverlappingPairs::removeConvexPairWithIndex(uint64 pairIndex, bool removeFromColliders) {

    RP3D_PROFILE("OverlappingPairs::removeConvexPairWithIndex()", mProfiler);

    const uint64 nbConvexPairs = mConvexPairs.size();

    assert(pairIndex < nbConvexPairs);

    assert(mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider1).find(mConvexPairs[pairIndex].pairID) != mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider1).end());
    assert(mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider2).find(mConvexPairs[pairIndex].pairID) != mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider2).end());

    if (removeFromColliders) {

        // Remove the involved overlapping pair from the two colliders
        mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider1).remove(mConvexPairs[pairIndex].pairID);
        mColliderComponents.getOverlappingPairs(mConvexPairs[pairIndex].collider2).remove(mConvexPairs[pairIndex].pairID);
    }

    assert(mMapConvexPairIdToPairIndex[mConvexPairs[pairIndex].pairID] == pairIndex);
    mMapConvexPairIdToPairIndex.remove(mConvexPairs[pairIndex].pairID);

    // Change the mapping between the pairId and the index in the convex pairs array if we swap the last item with the one to remove
    if (mConvexPairs.size() > 1 && pairIndex < (nbConvexPairs - 1)) {

        mMapConvexPairIdToPairIndex[mConvexPairs[nbConvexPairs - 1].pairID] = pairIndex;
    }

    // We want to keep the arrays tightly packed. Therefore, when a pair is removed,
    // we replace it with the last element of the array.
    mConvexPairs.removeAtAndReplaceByLast(pairIndex);
}

// Remove a concave pair at a given index
void OverlappingPairs::removeConcavePairWithIndex(uint64 pairIndex, bool removeFromColliders) {