AutoCAD Map 3D 2009 Geospatial Platform Reference

AutoCAD Map 3D Geospatial Platform API

virtual double MgCoordinateSystemMeasure::GetDistance	(	double	x1,
		double	y1,
		double	x2,
		double	y2
	)			`[pure virtual]`

Computes the distance between two coordinates.

.NET Syntax

virtual double GetDistance(double x1, double y1, double x2, double y2);

Java Syntax

virtual double GetDistance(double x1, double y1, double x2, double y2);

PHP Syntax

virtual double GetDistance(double x1, double y1, double x2, double y2);

Parameters:

	x1	(double) The x value in coordinate system units of the first coordinate.
	y1	(double) The y value in coordinate system units of the first coordinate.
	x2	(double) The x value in coordinate system units of the second coordinate.
	y2	(double) The y value in coordinate system units of the second coordinate.

Returns:: Returns the distance between (x1, y1) and (x2, y2) as a double in meters.

Example (PHP) (-74.806394, 40.714169) is New York City, and (-71.061342, 42.355892) is Boston, Massachusetts. $distance is 361777.95418396 meters.

 $distance = $coordSysMeasure->Getdistance(-74.806394, 40.714169, -71.061342, 42.355892);

Example (C#)

 using OSGeo.MapGuide;
 private MgCoordinateSystemMeasure geogCSMeasure;
 private double geogCSX = -160.101421317;
 private double geogCSY = 22.0234263273;
 private double geogCSX1 = -159.721535121256;
 private double geogCSY1 = 24.0028259520524;
 private double geogCSDistance = 2.0;
 private double distance;
 private double tolerance = 0.001;
 private Boolean isEquivalent;

 distance = geogCSMeasure.GetDistance(geogCSX, geogCSY, geogCSX1, geogCSY1);
 // distance has the value of geogCSDistance
 isEquivalent = Math.Abs(distance - geogCSDistance) < tolerance;

Exceptions:

MgCoordinateSystemMeasureFailedException

previous page start next page