Java Code Examples for com.facebook.rebound.SpringSystem#create()

The following examples show how to use com.facebook.rebound.SpringSystem#create() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Floating.java From FloatingView with Apache License 2.0

6 votes

public Floating(Activity activity){

        if (activity == null){
            throw new NullPointerException("Activity should not be null");
        }
        
        ViewGroup rootView = (ViewGroup) activity.findViewById(Window.ID_ANDROID_CONTENT);
        View decorView = rootView.findViewById(R.id.floating_decor);
        if (decorView instanceof  FloatingDecorView){
            mFloatingDecorView = (FloatingDecorView) decorView;
        }else {
            mFloatingDecorView = new FloatingDecorView(activity);
            mFloatingDecorView.setId(R.id.floating_decor);
            rootView.addView(mFloatingDecorView);
        }
        
        if (mSpringSystem == null){
            mSpringSystem = SpringSystem.create();
        }
        
    }

Example 2

Source File: YOLOComboView.java From RxComboDetector with MIT License

6 votes

public YOLOComboView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    BaseSpringSystem springSystem = SpringSystem.create();
    mComboSpring = springSystem.createSpring();
    mComboSpring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(600, 9));

    mYOLOLogo = new ImageView(context);
    FrameLayout.LayoutParams params = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT);
    mYOLOLogo.setLayoutParams(params);
    mYOLOLogo.setImageResource(R.drawable.ic_yolo);
    addView(mYOLOLogo);

    mComboText = new TextView(context);
    params = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT, Gravity.RIGHT);
    params.rightMargin = 30;
    mComboText.setLayoutParams(params);
    mComboText.setTextColor(context.getResources().getColor(android.R.color.holo_red_light));
    mComboText.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
    addView(mComboText);

    mSpringListener = new ComboSpringListener(mComboText);
    setAlpha(0);
}

Example 3

Source File: SwitchButton.java From FimiX8-RE with MIT License

6 votes

public void setup(AttributeSet attrs) {
    this.paint = new Paint(1);
    this.paint.setStyle(Style.STROKE);
    this.paint.setStrokeCap(Cap.ROUND);
    this.springSystem = SpringSystem.create();
    this.spring = this.springSystem.createSpring();
    this.spring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(50.0d, 7.0d));
    setOnClickListener(new OnClickListener() {
        public void onClick(View arg0) {
            SwitchButton.this.onViewSwitch();
        }
    });
    TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.SwitchButton);
    this.onSpotColor = typedArray.getColor(R.styleable.SwitchButton_onColor, this.onSpotColor);
    this.offSpotColor = typedArray.getColor(R.styleable.SwitchButton_spotColor, this.offSpotColor);
    this.toggleOn = typedArray.getBoolean(R.styleable.SwitchButton_onToggle, this.toggleOn);
    this.spotColor = this.offSpotColor;
    this.borderWidth = typedArray.getDimensionPixelSize(R.styleable.SwitchButton_borderWidth, (int) AbViewUtil.dip2px(getContext(), (float) this.borderWidth));
    this.defaultAnimate = typedArray.getBoolean(R.styleable.SwitchButton_animate, this.defaultAnimate);
    typedArray.recycle();
}

Example 4

Source File: SpringFloatingActionMenu.java From SpringFloatingActionMenu with Apache License 2.0

6 votes

private void applyBloomOpenAnimation() {
    final SpringSystem springSystem = SpringSystem.create();

    for (int i = 0; i < mMenuItemCount; i++) {
        // create the springs that control movement
        final Spring springX = springSystem.createSpring();
        final Spring springY = springSystem.createSpring();

        MenuItemView menuItemView = mMenuItemViews.get(i);
        springX.addListener(new MapPerformer(menuItemView, View.X, mFAB.getLeft(), menuItemView.getLeft()));
        springY.addListener(new MapPerformer(menuItemView, View.Y, mFAB.getTop(), menuItemView.getTop()));
        DestroySelfSpringListener destroySelfSpringListener = new DestroySelfSpringListener(this,mContainerView,true);
        springX.addListener(destroySelfSpringListener);
        springY.addListener(destroySelfSpringListener);
        springX.setEndValue(1);
        springY.setEndValue(1);
    }
}

Example 5

Source File: SpringFloatingActionMenu.java From SpringFloatingActionMenu with Apache License 2.0

6 votes

private void applyBloomCloseAnimation() {
    final SpringSystem springSystem = SpringSystem.create();

    for (int i = 0; i < mMenuItemCount; i++) {
        // create the springs that control movement
        final Spring springX = springSystem.createSpring();
        final Spring springY = springSystem.createSpring();

        MenuItemView menuItemView = mMenuItemViews.get(i);
        springX.addListener(new MapPerformer(menuItemView, View.X, menuItemView.getLeft(), mFAB.getLeft()));
        springY.addListener(new MapPerformer(menuItemView, View.Y, menuItemView.getTop(), mFAB.getTop()));
        DestroySelfSpringListener destroySelfSpringListener = new DestroySelfSpringListener(this,mContainerView,false);
        springX.addListener(destroySelfSpringListener);
        springY.addListener(destroySelfSpringListener);
        springX.setEndValue(1);
        springY.setEndValue(1);
    }
}

Example 6

Source File: MenuItemView.java From SpringFloatingActionMenu with Apache License 2.0

6 votes

private void applyPressAnimation() {
    SpringSystem springSystem = SpringSystem.create();
    final Spring spring = springSystem.createSpring();
    spring.addListener(new Performer(mBtn, View.SCALE_X));
    spring.addListener(new Performer(mBtn, View.SCALE_Y));
    mBtn.setOnTouchListener(new ToggleImitator(spring, 1, 1.2){
        @Override
        public void imitate(MotionEvent event) {
            super.imitate(event);
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    break;

                case MotionEvent.ACTION_UP:
                    callOnClick();
                    break;

                default:
            }
        }
    });
    spring.setCurrentValue(1);
}

Example 7

Source File: ToggleButton.java From light-novel-library_Wenku8_Android with GNU General Public License v2.0

6 votes

public void setup(AttributeSet attrs) {
	paint = new Paint(Paint.ANTI_ALIAS_FLAG);
	paint.setStyle(Style.FILL);
	paint.setStrokeCap(Cap.ROUND);
	
	springSystem = SpringSystem.create();
	spring = springSystem.createSpring();
	spring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(50, 7));
	
	this.setOnClickListener(new OnClickListener() {
		@Override
		public void onClick(View arg0) {
			toggle();
		}
	});
	
	TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.ToggleButton);
	offBorderColor = typedArray.getColor(R.styleable.ToggleButton_offBorderColor, offBorderColor);
	onColor = typedArray.getColor(R.styleable.ToggleButton_onColor, onColor);
	spotColor = typedArray.getColor(R.styleable.ToggleButton_spotColor, spotColor);
	offColor = typedArray.getColor(R.styleable.ToggleButton_offColor, offColor);
	borderWidth = typedArray.getDimensionPixelSize(R.styleable.ToggleButton_borderWidth, borderWidth);
	typedArray.recycle();
}

Example 8

Source File: SpringHelper.java From FloatingView with Apache License 2.0

5 votes

public void start(){
    SpringSystem springSystem = SpringSystem.create();
    Spring spring  = springSystem.createSpring();
    if (mConfig == 0){
        spring.setSpringConfig(SpringConfig.fromBouncinessAndSpeed(mConfigValueOne, mConfigValueTwo));
    }else if (mConfig == 1){
        spring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(mConfigValueOne, mConfigValueTwo));
    }
    start(spring);
}

Example 9

Source File: ToggleButton.java From ToggleButton with MIT License

5 votes

public void setup(AttributeSet attrs) {
	paint = new Paint(Paint.ANTI_ALIAS_FLAG);
	paint.setStyle(Style.FILL);
	paint.setStrokeCap(Cap.ROUND);
	
	springSystem = SpringSystem.create();
	spring = springSystem.createSpring();
	spring.setSpringConfig(SpringConfig.fromOrigamiTensionAndFriction(50, 7));
	
	this.setOnClickListener(new OnClickListener() {
		@Override
		public void onClick(View arg0) {
			toggle(defaultAnimate);
		}
	});
	
	TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.ToggleButton);
	offBorderColor = typedArray.getColor(R.styleable.ToggleButton_tbOffBorderColor, offBorderColor);
	onColor = typedArray.getColor(R.styleable.ToggleButton_tbOnColor, onColor);
	spotColor = typedArray.getColor(R.styleable.ToggleButton_tbSpotColor, spotColor);
	offColor = typedArray.getColor(R.styleable.ToggleButton_tbOffColor, offColor);
	borderWidth = typedArray.getDimensionPixelSize(R.styleable.ToggleButton_tbBorderWidth, borderWidth);
	defaultAnimate = typedArray.getBoolean(R.styleable.ToggleButton_tbAnimate, defaultAnimate);
	isDefaultOn = typedArray.getBoolean(R.styleable.ToggleButton_tbAsDefaultOn, isDefaultOn);
	typedArray.recycle();
	
	borderColor = offBorderColor;

	if (isDefaultOn) {
		toggleOn();
	}
}

Example 10

Source File: MenuItemView.java From SpringFloatingActionMenu with Apache License 2.0

5 votes

public void showLabel() {
    SpringSystem springSystem = SpringSystem.create();
    final Spring spring = springSystem.createSpring();
    spring.addListener(new MapPerformer(mLabel, View.SCALE_X, 0, 1));
    spring.addListener(new MapPerformer(mLabel, View.SCALE_Y, 0, 1));
    spring.setCurrentValue(0);
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            spring.setEndValue(1);
        }
    }, 200);
}

Example 11

Source File: SpringConfiguratorView.java From light-novel-library_Wenku8_Android with GNU General Public License v2.0

5 votes

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public SpringConfiguratorView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  SpringSystem springSystem = SpringSystem.create();
  springConfigRegistry = SpringConfigRegistry.getInstance();
  spinnerAdapter = new SpinnerAdapter(context);

  Resources resources = getResources();
  mRevealPx = dpToPx(40, resources);
  mStashPx = dpToPx(280, resources);

  mRevealerSpring = springSystem.createSpring();
  SpringListener revealerSpringListener = new RevealerSpringListener();
  mRevealerSpring
      .setCurrentValue(1)
      .setEndValue(1)
      .addListener(revealerSpringListener);

  addView(generateHierarchy(context));

  SeekbarListener seekbarListener = new SeekbarListener();
  mTensionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mTensionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mFrictionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mFrictionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mSpringSelectorSpinner.setAdapter(spinnerAdapter);
  mSpringSelectorSpinner.setOnItemSelectedListener(new SpringSelectedListener());
  refreshSpringConfigurations();

  this.setTranslationY(mStashPx);
}

Example 12

Source File: DefaultChatHeadManager.java From springy-heads with Apache License 2.0

5 votes

private void init(Context context, ChatHeadConfig chatHeadDefaultConfig) {
    chatHeadContainer.onInitialized(this);
    DisplayMetrics metrics = new DisplayMetrics();
    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    windowManager.getDefaultDisplay().getMetrics(metrics);
    this.displayMetrics = metrics;
    this.config = chatHeadDefaultConfig; //TODO : needs cleanup
    chatHeads = new ArrayList<>(5);
    arrowLayout = new UpArrowLayout(context);
    arrowLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
    chatHeadContainer.addView(arrowLayout, arrowLayout.getLayoutParams());
    arrowLayout.setVisibility(View.GONE);
    springSystem = SpringSystem.create();
    closeButton = new ChatHeadCloseButton(context, this, maxHeight, maxWidth);
    ViewGroup.LayoutParams layoutParams = chatHeadContainer.createLayoutParams(chatHeadDefaultConfig.getCloseButtonHeight(), chatHeadDefaultConfig.getCloseButtonWidth(), Gravity.TOP | Gravity.START, 0);
    closeButton.setListener(this);
    chatHeadContainer.addView(closeButton, layoutParams);
    closeButtonShadow = new ImageView(getContext());
    ViewGroup.LayoutParams shadowLayoutParams = chatHeadContainer.createLayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT, Gravity.BOTTOM, 0);
    closeButtonShadow.setImageResource(R.drawable.dismiss_shadow);
    closeButtonShadow.setVisibility(View.GONE);
    chatHeadContainer.addView(closeButtonShadow, shadowLayoutParams);
    arrangements.put(MinimizedArrangement.class, new MinimizedArrangement(this));
    arrangements.put(MaximizedArrangement.class, new MaximizedArrangement<T>(this));
    setupOverlay(context);
    setConfig(chatHeadDefaultConfig);
    SpringConfigRegistry.getInstance().addSpringConfig(SpringConfigsHolder.DRAGGING, "dragging mode");
    SpringConfigRegistry.getInstance().addSpringConfig(SpringConfigsHolder.NOT_DRAGGING, "not dragging mode");
}

Example 13

Source File: ExplosionFragment.java From Backboard with Apache License 2.0

5 votes

@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	mHandler = new Handler();
	mSpringSystem = SpringSystem.create();

	mCoasting = SpringConfig.fromOrigamiTensionAndFriction(0, 0);
	mCoasting.tension = 0;

	// this is very much a hack, since the end value is set to 9001 to simulate constant
	// acceleration.
	mGravity = SpringConfig.fromOrigamiTensionAndFriction(0, 0);
	mGravity.tension = 1;
}

Example 14

Source File: SpringConfiguratorView.java From KugouLayout with MIT License

5 votes

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public SpringConfiguratorView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  SpringSystem springSystem = SpringSystem.create();
  springConfigRegistry = SpringConfigRegistry.getInstance();
  spinnerAdapter = new SpinnerAdapter(context);

  Resources resources = getResources();
  mRevealPx = dpToPx(40, resources);
  mStashPx = dpToPx(280, resources);

  mRevealerSpring = springSystem.createSpring();
  SpringListener revealerSpringListener = new RevealerSpringListener();
  mRevealerSpring
      .setCurrentValue(1)
      .setEndValue(1)
      .addListener(revealerSpringListener);

  addView(generateHierarchy(context));

  SeekbarListener seekbarListener = new SeekbarListener();
  mTensionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mTensionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mFrictionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mFrictionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mSpringSelectorSpinner.setAdapter(spinnerAdapter);
  mSpringSelectorSpinner.setOnItemSelectedListener(new SpringSelectedListener());
  refreshSpringConfigurations();

  this.setTranslationY(mStashPx);
}

Example 15

Source File: Magnet.java From Magnet with MIT License

4 votes

@NonNull protected SpringSystem getSpringSystem() {
  return SpringSystem.create();
}

Example 16

Source File: ScaleFragment.java From Backboard with Apache License 2.0

4 votes

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
	final View rootView = inflater.inflate(R.layout.fragment_scale, container, false);

	final View rect = rootView.findViewById(R.id.rect);

	final SpringSystem springSystem = SpringSystem.create();

	final Spring spring = springSystem.createSpring();

	spring.addListener(new Performer(rect, View.SCALE_X));
	spring.addListener(new Performer(rect, View.SCALE_Y));

	rootView.setOnTouchListener(new View.OnTouchListener() {
		@Override
		@SuppressLint("ClickableViewAccessibility")
		public boolean onTouch(View v, MotionEvent event) {
			switch (event.getAction()) {
			case MotionEvent.ACTION_DOWN:
				spring.setVelocity(0);

			case MotionEvent.ACTION_MOVE:

				// can't use Imitation here because there is no nice mapping from
				// an event property to a Spring
				float scaleX, scaleY;

				float delta = event.getX() - (rect.getX() + rect.getMeasuredWidth() / 2);
				scaleX = Math.abs(delta) / (rect.getMeasuredWidth() / 2);

				delta = event.getY() - (rect.getY() + rect.getMeasuredHeight() / 2);
				scaleY = Math.abs(delta) / (rect.getMeasuredHeight() / 2);

				float scale = Math.max(scaleX, scaleY);

				spring.setEndValue(scale);

				break;
			case MotionEvent.ACTION_UP:
				spring.setEndValue(1f);

				break;
			}

			return true;
		}
	});

	return rootView;
}

Example 17

Source File: BloomFragment.java From Backboard with Apache License 2.0

4 votes

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
	mRootView = (RelativeLayout) inflater.inflate(R.layout.fragment_bloom, container, false);

	mCircles = new View[6];

	float diameter = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, DIAMETER,
			getResources().getDisplayMetrics());

	final TypedArray circles = getResources().obtainTypedArray(R.array.circles);

	// layout params
	RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams((int) diameter,
			(int) diameter);
	params.addRule(RelativeLayout.CENTER_IN_PARENT);

	// create the circle views
	int colorIndex = 0;
	for (int i = 0; i < mCircles.length; i++) {
		mCircles[i] = new View(getActivity());

		mCircles[i].setLayoutParams(params);

		mCircles[i].setBackgroundDrawable(getResources().getDrawable(circles
				.getResourceId(colorIndex, -1)));

		colorIndex++;
		if (colorIndex >= circles.length()) {
			colorIndex = 0;
		}

		mRootView.addView(mCircles[i]);
	}

	circles.recycle();

	/* Animations! */

	final SpringSystem springSystem = SpringSystem.create();

	// create spring
	final Spring spring = springSystem.createSpring();

	// add listeners along arc
	double arc = 2 * Math.PI / mCircles.length;

	for (int i = 0; i < mCircles.length; i++) {
		View view = mCircles[i];

		// map spring to a line segment from the center to the edge of the ring
		spring.addListener(new MapPerformer(view, View.TRANSLATION_X, 0, 1,
				0, (float) (RING_DIAMETER * Math.cos(i * arc))));

		spring.addListener(new MapPerformer(view, View.TRANSLATION_Y, 0, 1,
				0, (float) (RING_DIAMETER * Math.sin(i * arc))));

		spring.setEndValue(CLOSED);
	}

	mRootView.setOnTouchListener(new ToggleImitator(spring, CLOSED, OPEN));

	return mRootView;
}

Example 18

Source File: FlowerFragment.java From Backboard with Apache License 2.0

4 votes

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

	mRootView = (RelativeLayout) inflater.inflate(R.layout.fragment_flower, container, false);

	mCircles = new View[6];
	mCircle = mRootView.findViewById(R.id.circle);

	final float diameter = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, DIAMETER,
			getResources().getDisplayMetrics());

	final TypedArray circles = getResources().obtainTypedArray(R.array.circles);

	// layout params
	final RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams((int) diameter,
			(int) diameter);
	params.addRule(RelativeLayout.CENTER_IN_PARENT);

	// create the circle views
	int colorIndex = 0;
	for (int i = 0; i < mCircles.length; i++) {
		mCircles[i] = new View(getActivity());

		mCircles[i].setLayoutParams(params);

		mCircles[i].setBackgroundDrawable(getResources().getDrawable(
				circles.getResourceId(colorIndex, -1)));

		colorIndex++;
		if (colorIndex >= circles.length()) {
			colorIndex = 0;
		}

		mRootView.addView(mCircles[i], 0);
	}

	circles.recycle();

	/* Animations! */

	final SpringSystem springSystem = SpringSystem.create();

	// create spring
	final Spring spring = springSystem.createSpring();

	// add listeners along arc
	final double arc = 2 * Math.PI / mCircles.length;

	for (int i = 0; i < mCircles.length; i++) {
		View view = mCircles[i];

		// map spring to a line segment from the center to the edge of the ring
		spring.addListener(new MapPerformer(view, View.TRANSLATION_X, 0, 1,
				0, (float) (RING_DIAMETER * Math.cos(i * arc))));

		spring.addListener(new MapPerformer(view, View.TRANSLATION_Y, 0, 1,
				0, (float) (RING_DIAMETER * Math.sin(i * arc))));

		spring.setEndValue(CLOSED);
	}

	final ToggleImitator imitator = new ToggleImitator(spring, CLOSED, OPEN);

	// move circle using finger, snap when near another circle, and bloom when touched
	new Actor.Builder(SpringSystem.create(), mCircle)
			.addMotion(new SnapImitator(MotionProperty.X), View.TRANSLATION_X)
			.addMotion(new SnapImitator(MotionProperty.Y), View.TRANSLATION_Y)
			.onTouchListener(imitator)
			.build();

	return mRootView;
}

Example 19

Source File: ReboundAnimation.java From X-Alarm with GNU Affero General Public License v3.0

4 votes

private ReboundAnimation(){
    mSpringSystem = SpringSystem.create();
}

Example 20

Source File: SpringFloatingActionMenu.java From SpringFloatingActionMenu with Apache License 2.0

4 votes

private void applyFollowAnimation() {
    /* Animation code */

    final SpringSystem springSystem = SpringSystem.create();

    // create the springs that control movement
    final Spring springX = springSystem.createSpring();
    final Spring springY = springSystem.createSpring();

    // bind circle movement to events
    new Actor.Builder(springSystem, mFAB)
            .addMotion(springX, Imitator.TRACK_DELTA, Imitator.FOLLOW_EXACT, MotionProperty.X)
            .addMotion(springY, Imitator.TRACK_DELTA, Imitator.FOLLOW_EXACT, MotionProperty.Y)
            .build();

    // add springs to connect between the views
    final Spring[] followsX = new Spring[mMenuItemCount];
    final Spring[] followsY = new Spring[mMenuItemCount];

    for (int i = 0; i < mFollowCircles.size(); i++) {

        // create spring to bind views
        followsX[i] = springSystem.createSpring();
        followsY[i] = springSystem.createSpring();
        followsX[i].addListener(new Performer(mFollowCircles.get(i), View.TRANSLATION_X));
        followsY[i].addListener(new Performer(mFollowCircles.get(i), View.TRANSLATION_Y));

        // imitates another character
        final SpringImitator followX = new SpringImitator(followsX[i]);
        final SpringImitator followY = new SpringImitator(followsY[i]);

        //  imitate the previous character
        if (i == 0) {
            springX.addListener(followX);
            springY.addListener(followY);
        } else {
            followsX[i - 1].addListener(followX);
            followsY[i - 1].addListener(followY);
        }
    }
}