On Mon, Jan 26, 2009 at 1:20 PM, Jason Grout <jason-s...@creativetrax.com> wrote: > > Is there an easy way to draw infinite planes in Sage, given, say, the > normal vector and a point on the plane? Of course, you can draw them > using parametric_plot3d, but that requires me specifying a range, etc. > It also seems like it wouldn't be terribly efficient, since the infinite > plane could be represented with a jmol plane primitive or a Tachyon > plane primitive, which is presumably more efficient than a bunch of > triangles. It seems like it would be handy to have a primitive for an > infinite plane. > > I'm posting to sage-devel because I suspect there is not a primitive for > an infinite plane. > > I imagine that such a primitive would look something like: > > plane(normal, point=(0,0,0)) > > If it was drawn by itself, it would pick some default bounding box, > centered around the point. If it wasn't drawn by itself, it would just > fit itself inside of whatever the current bounding box for everything > else was. Or maybe it would still specify a bounding box around the > point, since that is likely to be a point of interest to the viewers, > but the plane would grow to fill the entire bounding box constructed in > a composite graphic.
This isn't in Sage, and it would be very useful if somebody (=you, of course) were to add it. You would want to look at the plot3d/platonic.py file to get an idea how to make index_face_set.pyx do what you want. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
