Patent ID: 7802369

Claim:
A method for producing a drawing of a part of a structure where the part of the structure has an arbitrary curve which is to be approximately represented with a circular segment, comprising the steps of: establishing a representative curve of the arbitrary curve of the structure which is to be approximated on a viewing medium, the representative curve having first and second ends; drawing, on the viewable medium using an instrument, a straight line which connects the first end and the second end of the representative curve; a perpendicular line perpendicular to the straight line at a middle point of the straight line, and thereby establishing an intersection point of the perpendicular line with the representative curve; determining, on the viewable medium using an instrument, a distance between the intersection point and the middle point, and a length of a straight-line segment from the first end and from the second end of the representative curve to the middle point; ascertaining, using the determined distance and the determined length, a curvature radius and a radius center point of a circular segment which approximates the arbitrary curve; and drawing, on the viewable medium using the instrument, a circular segment from the first end to the second end of the representative curve using the ascertained radius and center point.