William Stein wrote: > 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.
Of course :). It's now #5108. Jason 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. > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
