private static boolean isInVerticalTargetZone(
      float x, float y, float handleX, float handleYStart, float handleYEnd, float targetRadius) {
    return Math.abs(x - handleX) <= targetRadius && y > handleYStart && y < handleYEnd;
  }
Determines if the specified coordinate is in the target touch zone for a vertical bar handle.

@param x the x-coordinate of the touch point
@param y the y-coordinate of the touch point
@param handleX the x-coordinate of the vertical bar handle
@param handleYStart the top y-coordinate of the vertical bar handle
@param handleYEnd the bottom y-coordinate of the vertical bar handle
@param targetRadius the target radius in pixels
@return true if the touch point is in the target touch zone; false otherwise
core/src/main/java/com/theartofdev/edmodo/cropper/CropWindowHandler.java