Method _applyPreviewTransform

src/cdk/drag-drop/drag-ref.ts:1414–1420

* Applies a `transform` to the preview, taking into account any existing transforms on it. * @param x New transform value along the X axis. * @param y New transform value along the Y axis.

(x: number, y: number)

   * @param y New transform value along the Y axis.
   */
  private _applyPreviewTransform(x: number, y: number) {
    // Only apply the initial transform if the preview is a clone of the original element, otherwise
    // it could be completely different and the transform might not make sense anymore.
    const initialTransform = this._previewTemplate?.template ? undefined : this._initialTransform;
    const transform = getTransform(x, y);
    this._preview!.setTransform(combineTransforms(transform, initialTransform));
  }

  /**
   * Gets the distance that the user has dragged during the current drag sequence.