Cordasco, Anthony (NJ Data Services) wrote: > > Question: > If hour lines do not lie on the same plane as the base of the gnomon must > they shift and if so does anyone have a formula for this. > Lets imagine concentric circles with 4", 6", 8" and 10" concentric circles > each rising 1/4" above each previous one. If the hour lines are cut into the > surface of each circle, how would one compute the shift in hour lines? Would > it be a significant enough shift or would straight hour lines suffice? > Thanks, > Anthony
Hello Anthony, In each layer the intersection point of the style moves along the substyle. If the angle between the style and the substyle is a and the distance between 2 layers is b the shift c along the substyle is : c = b / tan(a) >From this new intersectionpoint in the new layer the hourlines radiate. Happy dialling, Fer. -- Fer J. de Vries [EMAIL PROTECTED] http://www.iaehv.nl/users/ferdv/ lat. 51:30 N long. 5:30 E
