private function Angle(pointO:MapPoint,pointS:MapPoint,pointM:MapPoint):Number { var molecule:Number=0; var denominator:Number=0; var angle:Number=0; var vSx:Number=pointS.x-pointO.x; var vSy:Number=pointS.y-pointO.y; var vMx:Number=pointM.x-pointO.x; var vMy:Number=pointM.y-pointO.y; molecule=vSx*vMx+vSy*vMy; denominator=(vSx*vSx+vSy*vSy)*(vMx*vMx+vMy*vMy); molecule/=Math.sqrt(denominator); angle=Math.acos(molecule); return angle; }
arcgis api for flex三个点求夹角
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转载自yangactive.iteye.com/blog/1563998
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