#9483: implicit_plot3d fails on symbolic inputs that can't be automatically
differentiated
-----------------------------------+----------------------------------------
Reporter: cwitty | Owner: cwitty
Type: defect | Status: needs_info
Priority: major | Milestone: sage-4.5.2
Component: graphics | Keywords:
Author: Carl Witty | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Merged:
Work_issues: |
-----------------------------------+----------------------------------------
Comment(by cwitty):
When I first wrote the code, I had the idea to create a direct-to-tachyon
backend that would use vertex normals to create much nicer-looking plots
with smaller numbers of plot_points, and laid the groundwork for this
backend with the gradient and smooth arguments. But I abandoned the code
without writing this backend (and leaving many other parts of the code
unfinished).
When William Cauchois took over and finished the code (thank you,
William!), he only wrote an {{{IndexFaceSet}}} backend, that can't
(currently) make use of vertex normals. So the gradient code is currently
useless.
It would make me sad, but I wouldn't object if the gradient code were
removed altogether. I do think it basically works, though, and it's still
open for somebody to write a direct-to-tachyon backend, or to extend
{{{IndexFaceSet}}} to support vertex normals...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9483#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
