@Override
 public void fromPatch(
     final PartitionPatch patchTopLeft,
     final PartitionPatch patchTopRight,
     final PartitionPatch patchBottomLeft,
     final PartitionPatch patchBottomRight) {
   final int cellOffsetX = 9;
   final int cellOffsetY = 9;
   this.setCellBlocked(patchTopLeft, 0, 0);
   this.setCellBlocked(patchTopRight, 9, 0);
   this.setCellBlocked(patchBottomLeft, 0, 9);
   this.setCellBlocked(patchBottomRight, 9, 9);
   this.m_altitudes =
       PartitionPatch.getMergedAltitudes(
           patchTopLeft, patchTopRight, patchBottomLeft, patchBottomRight);
   this.m_murFinInfo =
       PartitionPatch.getMergedMurFinInfo(
           patchTopLeft, patchTopRight, patchBottomLeft, patchBottomRight);
   this.m_miscProperties =
       PartitionPatch.getMergedMiscProperties(
           patchTopLeft, patchTopRight, patchBottomLeft, patchBottomRight);
 }