When surface plots are rendered in Postscript on OS X, artifacts appear if antialiasing is enabled. Each triangle used to compose the surface has its edges antialiased against whatever color is behind it causing in effect a narrow line to appear at the intersection of every pair of edges. The overall effect is that the mesh of lines connecting the points of the triangles is superimposed on the surface, but with varying visibility depending on (the color of) what what lies behind each edge. In some cases there appears a faux translucence, partially revealing either the normally hidden part of the surface or grid lines. In other words, I think that each triangle is being antialiased as an individual entity rather than the entire surface plot as a single entity.
If antialiasing is disabled the effect goes away, but then the rendered image looks, well, kinda crappy due to not being antialiased. I'm sure I'm not the first to notice this but I don't know if it has been discussed here so I thought I'd mention it. I'm not sure what can be done about it if anything. I _think_ it happens also when drawing to Aquaterm since I understand that it (and the Mac generally) uses the same imaging model as Postscript. I can send screen shots if anyone would like to see them. Jerry ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
