measureRetroversion.m
02f485383659pezhman_excelExport

measureRetroversion.m
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			function measureRetroversion(obj)
			% Glenoid retroversion is the angle between the glenoid postero-anterior line
			% and the line perpendicular to the Friedman's line that goes through the most
			% anterior glenoid rim point.
			%
			% obj.measurePosteroAnteriorLine() and obj.scapula.measureFriedmansLine() must
			% have been run before measuring the glenoid retroversion.
			FL = obj.scapula.friedmansLine;
			anteriorRimPoint = obj.getAnatomicalExtremeRimPoints().anterior;
			FLToAnteriorRimPoint = FL.orthogonalComplementToPoint(anteriorRimPoint);

			% Lines projection on scapular axial plane.
			IS = Vector([0 0 0], obj.scapula.coordSys.IS);
			FLToAnteriorRimPointXZ = IS.orthogonalComplementToPoint(FLToAnteriorRimPoint.vector);
			glenoidPosteroAnteriorLineXZ = IS.orthogonalComplementToPoint(obj.posteroAnteriorLine.vector);

			retroversionRotation = vrrotvec(FLToAnteriorRimPointXZ.vector, glenoidPosteroAnteriorLineXZ.vector);
			obj.retroversion = -sign(dot(IS.vector,retroversionRotation(1:3)))*rad2deg(retroversionRotation(4));
			end