Android Box2D距离接头在安德林中未保持形状

我正在使用Box2D distanceJoint和AndEngine来保持形状。但是形状没有保持，碎片只是掉到了地板上。它应该保持圆形/椭圆形。你能告诉我我做错了什么吗？在这里，我与邻居保持着距离。我应该与其他成员保持距离吗

    for (int i=1; i<nBodies; ++i) {
        FIXTURE_DEF = PhysicsFactory.createFixtureDef(25f, 0.0f, 1f);

        float angle = map(i, 0, nBodies, 0, 2*3.1415f);
        float x = cx + rx * (float)Math.sin(angle);
        float y = cy + ry * (float)Math.cos(angle);
        // Add plate    
        float x1 = (x + 10) * 30;
        float y1 = y * 20;
        centers[i][0] = x1;
        centers[i][1] = y1;

          Vector2 v1 = new Vector2(x1,y1);

          circle = new AnimatedSprite(x1, y1, this.mCircleFaceTextureRegion, this.getVertexBufferObjectManager());
          circleBody[i] = PhysicsFactory.createCircleBody(this.mPhysicsWorld, circle, BodyType.DynamicBody, FIXTURE_DEF);
          this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(circle, circleBody[i], true, true));

          this.mScene.attachChild(circle);

    }

    for(int i= 1;i < nBodies -1; i++)  {

        Vector2 v1 = new Vector2(centers[i][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[i][1]/PIXEL_TO_METER_RATIO_DEFAULT);
        Vector2 v2 = new Vector2(centers[i+1][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[i+1][1]/PIXEL_TO_METER_RATIO_DEFAULT);
        Log.d("Vals","vals x:" + centers[i][0] + "y:" + centers[i][1] + "x:" +centers[i+1][0] + "y:" + centers[i+1%19][1]);
        int j = i+1;
        Log.d("i","i" + i + "   " + j);
        distanceJoint.initialize(circleBody[i], circleBody[(i+1)], v1, v2);
        distanceJoint.collideConnected = true;
        distanceJoint.dampingRatio = 10.0f;
        distanceJoint.frequencyHz = 1.0f;
        this.mPhysicsWorld.createJoint(distanceJoint);
    }

    Vector2 v1 = new Vector2(centers[1][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[1][1]/PIXEL_TO_METER_RATIO_DEFAULT);
    Vector2 v2 = new Vector2(centers[19][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[19][1]/PIXEL_TO_METER_RATIO_DEFAULT);
    distanceJoint.initialize(circleBody[1], circleBody[19], v1, v2);
    distanceJoint.collideConnected = true;
    distanceJoint.dampingRatio = 10.0f;
    distanceJoint.frequencyHz = 1.0f;
    this.mPhysicsWorld.createJoint(distanceJoint);

---

for（int i=1；i我想我已经通过在每个身体之间保持一个距离关节来解决了这个问题。我试图在中重新创建水滴演示。这个演示使用了一个恒常体积关节。我已经能够在每个身体之间重新创建一个距离关节，如下所示

    for(int i= 0;i < nBodies-1; i++)  {

       for(int j=i+1; j< nBodies ; j++){
           Vector2 v1 = new Vector2(centers[i][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[i][1]/PIXEL_TO_METER_RATIO_DEFAULT);
           Vector2 v2 = new Vector2(centers[j][0]/PIXEL_TO_METER_RATIO_DEFAULT,centers[j][1]/PIXEL_TO_METER_RATIO_DEFAULT);
           Log.d("Vals","vals x:" + centers[i][0] + "y:" + centers[i][1] + "x:" +centers[j][0] + "y:" + centers[j][1]);

           Log.d("i","i:" + i + " j:" + j);
           distanceJoint.initialize(circleBody[i], circleBody[(j)], v1, v2);

           distanceJoint.collideConnected = true;
           distanceJoint.dampingRatio = 10.0f;
           distanceJoint.frequencyHz = 0.5f;
           this.mPhysicsWorld.createJoint(distanceJoint);
       }
    }

for（int i=0；i

我现在需要在两个物体之间有一条连接线，否则水滴会从落在上面的物体上反弹

请让我知道如何在相邻实体之间绘制连接线，以便在整个形状移动时保持连接