public ActivityBuilder setSnapRadius(float snapRadius) {
      mOptions.snapRadius = snapRadius;
      return this;
    }
An edge of the crop window will snap to the corresponding edge of a specified bounding box
when the crop window edge is less than or equal to this distance (in pixels) away from the
bounding box edge (in pixels).<br>
<i>Default: 3dp</i>
core/src/main/java/com/theartofdev/edmodo/cropper/CropImage.java