/* Copyright 2015 ESRI
* 
* All rights reserved under the copyright laws of the United States
* and applicable international laws, treaties, and conventions.
* 
* You may freely redistribute and use this sample code, with or
* without modification, provided you include the original copyright
* notice and use restrictions.
* 
* See the use restrictions at <your ArcGIS install location>/DeveloperKit10.4/userestrictions.txt.
* 
*/
package arcgissamples.scenario.extension;


import com.esri.arcgis.geodatabase.IFeature;
import com.esri.arcgis.geodatabase.IFeatureClass;
import com.esri.arcgis.geometry.Polygon;
import com.esri.arcgis.interop.extn.ArcGISExtension;

@ArcGISExtension
public class AreaCalculator implements ICalculateArea
{ 
  public AreaCalculator(){}
  
  public double calculateArea(IFeatureClass fClass) {
    double totalArea = 0;
    try{
      // Get the counties layer
      int numFeatures = fClass.featureCount(null);
      IFeature feature = null;
      Polygon polygon = null;
      for(int i=0; i<numFeatures; i++)
      {
        feature = fClass.getFeature(i);
        polygon = (Polygon)feature.getShape();
        totalArea += polygon.getArea();
      }
    }
    catch(Exception e){
      e.printStackTrace();
    }
      return totalArea;
  }
}