Method length

ij/src/main/java/ij/gui/Roi.java:2898–2900

Returns the length of a vector with components dx, dy

(double dx, double dy)

	/** Returns the length of a vector with components dx, dy */
	static double length(double dx, double dy) {
		return Math.sqrt(dx*dx+dy*dy);
	}

	/** Used by PolygonRoi, Line, ShapeRoi etc. */
	static double sqr(double x) {return x*x; }