Method createConstraints

core/physics/PhysicsJoint.cpp:270–293

}

bool PhysicsJointFixed::createConstraints()
{
    do
    {
        _bodyA->getNode()->setPosition(_anchr);
        _bodyB->getNode()->setPosition(_anchr);

        // add a pivot joint to fixed two body together
        auto joint = cpPivotJointNew(_bodyA->getCPBody(), _bodyB->getCPBody(), PhysicsHelper::vec22cpv(_anchr));
        AX_BREAK_IF(joint == nullptr);
        _cpConstraints.emplace_back(joint);

        // add a gear joint to make two body have the same rotation.
        joint = cpGearJointNew(_bodyA->getCPBody(), _bodyB->getCPBody(), 0, 1);
        AX_BREAK_IF(joint == nullptr);
        _cpConstraints.emplace_back(joint);

        _collisionEnable = false;

        return true;
    } while (false);

    return false;
}

PhysicsJointPin* PhysicsJointPin::construct(PhysicsBody* a, PhysicsBody* b, const Vec2& pivot)
{