[yt-svn] commit/yt: MatthewTurk: When there is no rotation, apply jitter to fix HEALpix camera as rays walk

[Bitbucket]

1 new commit in yt:


https://bitbucket.org/yt_analysis/yt/changeset/d28068beb5ac/
changeset:   d28068beb5ac
branch:      yt
user:        MatthewTurk
date:        2012-08-02 11:32:04
summary:     When there is no rotation, apply jitter to fix HEALpix camera as rays walk
along cell edges.
affected #:  1 file

diff -r 34d5336c01e5019173e31395e2a66fd7676cfa23 -r d28068beb5aceb01702502ecf7e86ecd0afbf0eb yt/visualization/volume_rendering/camera.py
--- a/yt/visualization/volume_rendering/camera.py
+++ b/yt/visualization/volume_rendering/camera.py
@@ -1460,6 +1460,8 @@
         vs2 = vs.copy()
         for i in range(3):
             vs[:,:,i] = (vs2 * rotation[:,i]).sum(axis=2)
+    else:
+        vs += 1e-8
     positions = na.ones((nv, 1, 3), dtype='float64', order='C') * center
     dx = min(g.dds.min() for g in pf.h.find_point(center)[0])
     positions += inner_radius * dx * vs

Repository URL: https://bitbucket.org/yt_analysis/yt/

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