[Yt-svn] yt: Not sure how this got backed out in the merge, but I am re-a...

[hg at spacepope.org]

hg Repository: yt
details:   yt/rev/8c97e0a35093
changeset: 3526:8c97e0a35093
user:      Matthew Turk <matthewturk at gmail.com>
date:
Wed Nov 10 14:02:22 2010 -0800
description:
Not sure how this got backed out in the merge, but I am re-applying it.

diffstat:

 yt/visualization/volume_rendering/camera.py           |  2 ++
 yt/visualization/volume_rendering/grid_partitioner.py |  9 +++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diffs (46 lines):

diff -r 6e9ce30447f6 -r 8c97e0a35093 yt/visualization/volume_rendering/camera.py
--- a/yt/visualization/volume_rendering/camera.py	Wed Nov 10 13:58:26 2010 -0800
+++ b/yt/visualization/volume_rendering/camera.py	Wed Nov 10 14:02:22 2010 -0800
@@ -194,6 +194,8 @@
             else:
                 volume = HomogenizedVolume(fields, pf = self.pf,
                                            log_fields = log_fields)
+        else:
+            self.use_kd = isinstance(volume, AMRKDTree)
         self.volume = volume
 
     def _setup_normalized_vectors(self, normal_vector, north_vector):
diff -r 6e9ce30447f6 -r 8c97e0a35093 yt/visualization/volume_rendering/grid_partitioner.py
--- a/yt/visualization/volume_rendering/grid_partitioner.py	Wed Nov 10 13:58:26 2010 -0800
+++ b/yt/visualization/volume_rendering/grid_partitioner.py	Wed Nov 10 14:02:22 2010 -0800
@@ -43,8 +43,9 @@
 class HomogenizedVolume(ParallelAnalysisInterface):
     bricks = None
     def __init__(self, fields = "Density", source = None, pf = None,
-                 log_fields = None):
+                 log_fields = None, no_ghost = False):
         # Typically, initialized as hanging off a hierarchy.  But, not always.
+        self.no_ghost = no_ghost
         if pf is not None: self.pf = pf
         if source is None: source = self.pf.h.all_data()
         self.source = source
@@ -75,7 +76,8 @@
         # field.
         vcds = []
         for field, log_field in zip(self.fields, self.log_fields):
-            vcd = grid.get_vertex_centered_data(field).astype('float64')
+            vcd = grid.get_vertex_centered_data(field, no_ghost = self.no_ghost)
+            vcd = vcd.astype("float64")
             if log_field: vcd = na.log10(vcd)
             vcds.append(vcd)
 
@@ -177,6 +179,9 @@
                                 ))
         self.bricks = na.array(bricks, dtype='object')
 
+    def reset_cast(self):
+        pass
+
 class HomogenizedBrickCollection(DistributedObjectCollection):
     def __init__(self, source):
         # The idea here is that we have two sources -- the global_domain