I'm generating sets of tactile maps for a blind friend, as follows: OSM export files -(Ruby)-> PostScript -(lpr)-> swell paper
I'm using straight lines for the roads, using the PostScript moveto and lineto operators. However, I'd like to use the curveto operator: x1 y1 x2 y2 x3 y3 curveto - This operator draws a curve from the current point to the point (x3, y3) using points (x1, y1) and (x2, y2) as control points. The curve is a Bézier cubic curve. In such a curve, the tangent of the curve at the current point will be a line segment running from the current point to (x1, y1) and the tangent at (x3, y3) is the line running from (x3, y3) to (x2, y2). -- http://www.tailrecursive.org/postscript/operators.html I'm not sure what the best starting point would be for this. I found this Perl code, but it seems a bit dated: http://wiki.openstreetmap.org/wiki/Osmarender/BezierCurves Clues, comments, and suggestions? -r -- http://www.cfcl.com/rdm Rich Morin r...@cfcl.com http://www.cfcl.com/rdm/resume San Bruno, CA, USA +1 650-873-7841 Software system design, development, and documentation _______________________________________________ dev mailing list dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/dev
