Java 类com.facebook.rebound.SpringUtil 实例源码

项目：test4XXX 文件：PlaygroundActivity.java

@Override
public void onBackPressed() {
  if (mAnimating || mCurrentExample == null) {
    return;
  }
  mAnimating = true;
  mCurrentExample.hide(true, new ExampleContainerView.Callback() {
    @Override
    public void onProgress(double progress) {
      float scale = (float) SpringUtil.mapValueFromRangeToRange(progress, 0, 1, 0.8, 1);
      mRootContainer.setScaleX(scale);
      mRootContainer.setScaleY(scale);
      mRootContainer.setAlpha((float) progress);
    }

    @Override
    public void onEnd() {
      mAnimating = false;
      mCurrentExample.clearCallback();
      mRootView.removeView(mCurrentExample);
      mCurrentExample = null;
    }
  });
}

项目：test4XXX 文件：MainActivity.java

@Override
public void onSpringUpdate(Spring spring) {
    // On each update of the spring value, we adjust the scale of the image view to match
    // the
    // springs new value. We use the SpringUtil linear interpolation function
    // mapValueFromRangeToRange
    // to translate the spring's 0 to 1 scale to a 100% to 50% scale range and apply that to
    // the View
    // with setScaleX/Y. Note that rendering is an implementation detail of the application
    // and not
    // Rebound itself. If you need Gingerbread compatibility consider using NineOldAndroids
    // to update
    // your view properties in a backwards compatible manner.
    float mappedValue = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 1, 0.5);
    mImageView.setScaleX(mappedValue);
    mImageView.setScaleY(mappedValue);
}

项目：Hipster-Visualization 文件：SpringyImageView.java

@Override
public void onSpringUpdate(Spring spring) {
    setVisibility(View.VISIBLE);
    double value = spring.getCurrentValue();

    float selectedImage = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, 0, 1);
    float titleTranslateX = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, mStartX, 0);
    float titleTranslateY = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, mStartY, 0);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        setScaleX(selectedImage);
        setScaleY(selectedImage);
        setTranslationX(titleTranslateX);
        setTranslationY(titleTranslateY);
    }
}

项目：Hipster-Visualization 文件：SpringyButton.java

@Override
public void onSpringUpdate(Spring spring) {
    setVisibility(View.VISIBLE);
    double value = spring.getCurrentValue();

    float selectedTitleScale = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, 0, 1);
    float titleTranslateX = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, mStartX, 0);
    float titleTranslateY = (float) SpringUtil.mapValueFromRangeToRange(
            value, 0, 1, mStartY, 0);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        setScaleX(selectedTitleScale);
        setScaleY(selectedTitleScale);
        setTranslationX(titleTranslateX);
        setTranslationY(titleTranslateY);
    }
}

项目：Hipster-Visualization 文件：SpringyFontFitTextView.java

@Override
public void onSpringUpdate(Spring spring) {
    Resources resources = getResources();
    double value = spring.getCurrentValue();

    float selectedTitleScale = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 0,
            1);
    float titleTranslateY = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1,
            Util.dpToPx(-150f, resources), 0);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        setScaleX(selectedTitleScale);
        setScaleY(selectedTitleScale);
        setTranslationY(titleTranslateY);
    }
}

项目：rebound 文件：PlaygroundActivity.java

@Override
public void onBackPressed() {
  if (mAnimating || mCurrentExample == null) {
    return;
  }
  mAnimating = true;
  mCurrentExample.hide(true, new ExampleContainerView.Callback() {
    @Override
    public void onProgress(double progress) {
      float scale = (float) SpringUtil.mapValueFromRangeToRange(progress, 0, 1, 0.8, 1);
      mRootContainer.setScaleX(scale);
      mRootContainer.setScaleY(scale);
      mRootContainer.setAlpha((float) progress);
    }

    @Override
    public void onEnd() {
      mAnimating = false;
      mCurrentExample.clearCallback();
      mRootView.removeView(mCurrentExample);
      mCurrentExample = null;
    }
  });
}

项目：sapphire 文件：MainActivity.java

@Override
public void onSpringUpdate(Spring spring) {
    // On each update of the spring value, we adjust the scale of the image view to match the
    // springs new value. We use the SpringUtil linear interpolation function mapValueFromRangeToRange
    // to translate the spring's 0 to 1 scale to a 100% to 50% scale range and apply that to the View
    // with setScaleX/Y. Note that rendering is an implementation detail of the application and not
    // Rebound itself. If you need Gingerbread compatibility consider using NineOldAndroids to update
    // your view properties in a backwards compatible manner.
    float mappedValue = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 1, 0.5);
    suggestionView.setScaleX(mappedValue);
    suggestionView.setScaleY(mappedValue);
}

项目：MyTravelingDiary 文件：SwitchButton.java

/**
 * @param value
 */
private void calculateEffect(final double value) {
    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：Gank-Meizi 文件：ReboundImageView.java

@Override
public void onSpringUpdate(Spring spring) {
    float mappedvalue = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 1, 0.8);
    view.setScaleX(mappedvalue);
    view.setScaleY(mappedvalue);

    float rotation = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 0, 30);
    view.setRotation(rotation);
}

项目：Incubators 文件：IOSToggleButton.java

@Override
public void onSpringUpdate(Spring spring) {
    final double value = spring.getCurrentValue();

    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：SpiderMenu 文件：SpiderMenu.java

/**
 * Called whenever the spring is updated
 *
 * @param spring the Spring sending the update
 */
@Override
public void onSpringUpdate( Spring spring ) {
    /*
    Map our current value to scale values. Rebound has a nifty SpringUtil class to do that
    We map our values between scale 0.3 to 1 (Range of 30% to 100%)
     */
    double nMappedValue = SpringUtil.mapValueFromRangeToRange( spring.getCurrentValue(), 0.0d, 1.0d, 0.8d, 1.0d);
    mView.get().setScaleX( (float)nMappedValue );
    mView.get().setScaleY( (float)nMappedValue );
}

项目：RxComboDetector 文件：YOLOComboView.java

@Override
public void onSpringUpdate(Spring spring) {
    if (mView != null) {
        float mappedValue =
                (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1,
                        1, TO_HIGH);
        mView.setScaleX(mappedValue);
        mView.setScaleY(mappedValue);
    }
}

项目：AndroidAnimations 文件：ReboundDemoActivity.java

@Override public void onSpringUpdate(Spring spring) {
  // On each update of the spring value, we adjust the scale of the image view to match the
  // springs new value. We use the SpringUtil linear interpolation function mapValueFromRangeToRange
  // to translate the spring's 0 to 1 scale to a 100% to 50% scale range and apply that to the View
  // with setScaleX/Y. Note that rendering is an implementation detail of the application and not
  // Rebound itself. If you need Gingerbread compatibility consider using NineOldAndroids to update
  // your view properties in a backwards compatible manner.
  float mappedValue = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 1, 0.5);
  imageView.setScaleX(mappedValue);
  imageView.setScaleY(mappedValue);
}

项目：FloatWindow 文件：ToggleButton.java

/**
 * @param value
 */
private void calculateEffect(final double value) {
    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：MyScse-Client 文件：ToggleButton.java

/**
 * @param value
 */
private void calculateEffect(final double value) {
    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：ExhibitionCenter 文件：ToggleButton.java

/**
 * @param value
 */
private void calculateEffect(final double value) {
    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：EveryXDay 文件：ToggleButton.java

@Override
public void onSpringUpdate(Spring spring) {
    final double value = spring.getCurrentValue();

    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：test4XXX 文件：OrigamiExample.java

/**
 * This method takes the current state of the spring and maps it to all the values for each UI
 * element that is animated on this spring. This allows the Spring to act as a common timing
 * function for the animation ensuring that all element transitions are synchronized.
 *
 * You can think of these mappings as similiar to Origami transitions.
 * SpringUtil#mapValueFromRangeToRange converts the spring's 0 to 1 transition and maps it to the
 * range of animation for a property on a view such as translation, scale, rotation, and alpha.
 */
private void render() {
  Resources resources = getResources();
  // Get the current spring value.
  double value = mSpring.getCurrentValue();

  // Map the spring to the feedback bar position so that its hidden off screen and bounces in on tap.
  float barPosition =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, mFeedbackBar.getHeight(), 0);
  mFeedbackBar.setTranslationY(barPosition);

  // Map the spring to the selected photo scale as it moves into and out of the grid.
  float selectedPhotoScale =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 0.33, 1);
  selectedPhotoScale = Math.max(selectedPhotoScale, 0); // Clamp the value so we don't go below 0.
  mSelectedPhoto.setScaleX(selectedPhotoScale);
  mSelectedPhoto.setScaleY(selectedPhotoScale);

  // Map the spring to the selected photo translation from its position in the grid
  float selectedPhotoTranslateX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, Util.dpToPx(-106.667f, resources), 0);
  float selectedPhotoTranslateY = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, Util.dpToPx(46.667f, resources), 0);
  mSelectedPhoto.setTranslationX(selectedPhotoTranslateX);
  mSelectedPhoto.setTranslationY(selectedPhotoTranslateY);

  // Map the spring to the photo grid alpha as it fades to black when the photo is selected.
  float gridAlpha =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 1, 0);
  mPhotoGrid.setAlpha(gridAlpha);


  // Map the spring to the photo grid scale so that it scales down slightly as the selected photo // zooms in.
  float gridScale =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 1, 0.95);
  gridScale = Math.max(gridScale, 0); // Clamp the value so we don't go below 0.
  mPhotoGrid.setScaleX(gridScale);
  mPhotoGrid.setScaleY(gridScale);
}

项目：test4XXX 文件：ExampleContainerView.java

@Override
public void onSpringUpdate(Spring spring) {
  double val = spring.getCurrentValue();
  float xlat = (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, getWidth());
  setTranslationX(xlat);
  if (mCallback != null) {
    mCallback.onProgress(spring.getCurrentValue());
  }
}

项目：Backboard 文件：MapPerformer.java

@Override
public void onSpringUpdate(@NonNull final Spring spring) {

    mProperty.set(mTarget,
            (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(),
                    initialStart, initialEnd, start, end)
    );
}

项目：Bound 文件：SpringController.java

@Override public void onSpringUpdate(Spring spring) {
  super.onSpringUpdate(spring);
  val = spring.getCurrentValue();
  ViewCompat.setTranslationX(viewCallback.getFabButton(),
      (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, centerX + 100));
  ViewCompat.setTranslationY(viewCallback.getFabButton(),
      (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, centerY + 100));
  ViewCompat.setTranslationX(viewCallback.getBoundMenu(),
      (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, centerX + 100));
  ViewCompat.setTranslationY(viewCallback.getBoundMenu(),
      (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, centerY ));
}

项目：Bound 文件：SpringController.java

@Override public void onSpringUpdate(Spring spring) {
  super.onSpringUpdate(spring);
  float scaleSpring = (float) SpringUtil.mapValueFromRangeToRange(
      spring.getCurrentValue(), 0, 1, 0, scale);
  ViewCompat.setScaleX(viewCallback.getBoundMenu(), scaleSpring);
  ViewCompat.setScaleY(viewCallback.getBoundMenu(), scaleSpring);
}

项目：pagarme-android 文件：CardHashView.java

@Override public void onSpringUpdate(Spring spring) {
  super.onSpringUpdate(spring);
  rotateHorizontal = (float) SpringUtil.mapValueFromRangeToRange(spring.getCurrentValue(), 0, 1, 0, 180);
  if(rotateHorizontal > 90) {
    frontCreditCardView.setVisibility(GONE);
    backCreditCardView.setVisibility(VISIBLE);
  } else {
    frontCreditCardView.setVisibility(VISIBLE);
    backCreditCardView.setVisibility(GONE);
  }
  ViewCompat.setRotationY(frontCreditCardView, rotateHorizontal);
  ViewCompat.setRotationY(backCreditCardView, 180 - rotateHorizontal);
}

项目：pagarme-android 文件：CardHashView.java

@Override public void onSpringUpdate(Spring spring) {
  super.onSpringUpdate(spring);

  verticalCurrentValue = spring.getCurrentValue();

  float rotation = (float) SpringUtil.mapValueFromRangeToRange(verticalCurrentValue, 0, 1,
      0, -30);
  ViewCompat.setRotationX(frontCreditCardView, rotation);
  ViewCompat.setRotationX(backCreditCardView, rotation);

  float scale = (float) SpringUtil.mapValueFromRangeToRange(verticalCurrentValue, 0, 1, 1, 0.7);
  ViewCompat.setScaleX(frontCreditCardView, scale);
  ViewCompat.setScaleY(frontCreditCardView, scale);
  ViewCompat.setScaleX(backCreditCardView, scale);
  ViewCompat.setScaleY(backCreditCardView, scale);

  if(bottomView != null) {
    int creditCardHeight = frontCreditCardView.getHeight();
    float cardPositionY = (float) SpringUtil.mapValueFromRangeToRange(verticalCurrentValue, 0,
        1, 0, -(creditCardHeight / 6.5));
    ViewCompat.setTranslationY(frontCreditCardView, cardPositionY);
    ViewCompat.setTranslationY(backCreditCardView, cardPositionY);
    ViewCompat.setTranslationY(bottomView,
        (float) SpringUtil.mapValueFromRangeToRange(verticalCurrentValue, 0, 1, 0,
            -(creditCardHeight / 2.5)));
  }
}

项目：HaoCommon 文件：ToggleButton.java

/**
 * @param value
 */
private void calculateEffect(final double value) {
    final float mapToggleX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, spotMinX, spotMaxX);
    spotX = mapToggleX;

    float mapOffLineWidth = (float) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, 10, spotSize);

    offLineWidth = mapOffLineWidth;

    final int fb = Color.blue(onColor);
    final int fr = Color.red(onColor);
    final int fg = Color.green(onColor);

    final int tb = Color.blue(offBorderColor);
    final int tr = Color.red(offBorderColor);
    final int tg = Color.green(offBorderColor);

    int sb = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fb, tb);
    int sr = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fr, tr);
    int sg = (int) SpringUtil.mapValueFromRangeToRange(1 - value, 0, 1, fg, tg);

    sb = clamp(sb, 0, 255);
    sr = clamp(sr, 0, 255);
    sg = clamp(sg, 0, 255);

    borderColor = Color.rgb(sr, sg, sb);

    postInvalidate();
}

项目：Dragger 文件：DraggerView.java

@Override public void onSpringUpdate(Spring spring) {

      double val = spring.getCurrentValue();
      switch (dragPosition) {
        case LEFT:
          ViewCompat.setTranslationX(dragView,
              (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, -dragView.getWidth()));
          break;
        case RIGHT:
          ViewCompat.setTranslationX(dragView,
              (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, dragView.getWidth()));
          break;
        case TOP:
          ViewCompat.setTranslationY(dragView,
              (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, dragView.getHeight()));
          break;
        case BOTTOM:
          ViewCompat.setTranslationY(dragView,
              (float) SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, -dragView.getHeight()));
          break;
        default:
          break;
      }

      ViewCompat.setAlpha(shadowView,
          (float) (MAX_ALPHA - SpringUtil.mapValueFromRangeToRange(val, 0, 1, 0, 1)));

      if (draggerCallback != null) {
        draggerCallback.onProgress(spring.getCurrentValue());
      }
    }

项目：Green 文件：OrigamiExample.java

/**
 * This method takes the current state of the spring and maps it to all the values for each UI
 * element that is animated on this spring. This allows the Spring to act as a common timing
 * function for the animation ensuring that all element transitions are synchronized.
 *
 * You can think of these mappings as similiar to Origami transitions.
 * SpringUtil#mapValueFromRangeToRange converts the spring's 0 to 1 transition and maps it to the
 * range of animation for a property on a view such as translation, scale, rotation, and alpha.
 */
private void render() {
  Resources resources = getResources();
  // Get the current spring value.
  double value = mSpring.getCurrentValue();

  // Map the spring to the feedback bar position so that its hidden off screen and bounces in on tap.
  float barPosition =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, mFeedbackBar.getHeight(), 0);
  mFeedbackBar.setTranslationY(barPosition);

  // Map the spring to the selected photo scale as it moves into and out of the grid.
  float selectedPhotoScale =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 0.33, 1);
  selectedPhotoScale = Math.max(selectedPhotoScale, 0); // Clamp the value so we don't go below 0.
  mSelectedPhoto.setScaleX(selectedPhotoScale);
  mSelectedPhoto.setScaleY(selectedPhotoScale);

  // Map the spring to the selected photo translation from its position in the grid
  float selectedPhotoTranslateX = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, Util.dpToPx(-106.667f, resources), 0);
  float selectedPhotoTranslateY = (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, Util.dpToPx(46.667f, resources), 0);
  mSelectedPhoto.setTranslationX(selectedPhotoTranslateX);
  mSelectedPhoto.setTranslationY(selectedPhotoTranslateY);

  // Map the spring to the photo grid alpha as it fades to black when the photo is selected.
  float gridAlpha =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 1, 0);
  mPhotoGrid.setAlpha(gridAlpha);


  // Map the spring to the photo grid scale so that it scales down slightly as the selected photo // zooms in.
  float gridScale =
      (float) SpringUtil.mapValueFromRangeToRange(value, 0, 1, 1, 0.95);
  gridScale = Math.max(gridScale, 0); // Clamp the value so we don't go below 0.
  mPhotoGrid.setScaleX(gridScale);
  mPhotoGrid.setScaleY(gridScale);
}