pointdistancecalculator.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.common.math;

import com.esri.adf.web.data.geometry.WebPoint;

public class PointDistanceCalculator {
	public PointDistanceCalculator() {
	}
	
	public double getDistance(WebPoint point1, WebPoint point2) {
		//http://www.teacherschoice.com.au/Maths_Library/Analytical%20Geometry/Alg_15.htm
		
		double distance = 0.0;
		
		double xDistance = point2.getX() - point1.getX();
		xDistance *= xDistance;
		
		double yDistance = point2.getY() - point1.getY();
		yDistance *= yDistance;
		
		distance = Math.sqrt(xDistance + yDistance);
		
		return distance;
	}
}