Method getFaceDirection

core/3d/OBB.cpp:384–415

}

Vec3 OBB::getFaceDirection(int index) const
{
    Vec3 corners[8];
    getCorners(corners);

    Vec3 faceDirection, v0, v1;
    switch (index)
    {
    case 0:  // front and back
        v0 = corners[2] - corners[1];
        v1 = corners[0] - corners[1];
        Vec3::cross(v0, v1, &faceDirection);
        faceDirection.normalize();
        break;
    case 1:  // left and right
        v0 = corners[5] - corners[2];
        v1 = corners[3] - corners[2];
        Vec3::cross(v0, v1, &faceDirection);
        faceDirection.normalize();
        break;
    case 2:  // top and bottom
        v0 = corners[1] - corners[2];
        v1 = corners[5] - corners[2];
        Vec3::cross(v0, v1, &faceDirection);
        faceDirection.normalize();
        break;
    default:
        AXASSERT(0, "Invalid index!");
        break;
    }
    return faceDirection;
}

bool OBB::intersects(const OBB& box) const
{