text: /*
   * Copyright 2016 Zhukov Sergei
   *   
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *  
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * Created by ZhukovSD on 21.05.2016.
   */
  
  var ChunkIdGenerator = function() {};
  
  ChunkIdGenerator.generateId = function(chunkSize, idFactor, position) {
      return Math.floor(position.row / chunkSize.rowCount) * idFactor + Math.floor(position.column / chunkSize.columnCount);
  };
  
  ChunkIdGenerator.chunkOrigin = function(chunkSize, idFactor, chunkId) {
      return {
          row: Math.floor(chunkId / idFactor) * chunkSize.rowCount,
          column: (chunkId % idFactor) * chunkSize.columnCount
      };
  };
  
  ChunkIdGenerator.chunkRow = function(chunkId, idFactor) {
      return Math.floor(chunkId / idFactor);
  };
  
  ChunkIdGenerator.chunkColumn = function(chunkId, idFactor) {
      return chunkId % idFactor;
  };