The doc does say that what you get won't be correct:
Getting Data on Scene Groups
<snip/>
When getting per-component data, such as PointPosition, the results are
correct only when all objects in the group have the same number of
components.
The nature of the "incorrect" results are not documented, true, but they
have been discussed on some mailing lists and on blogs, like this one:
http://xsisupport.com/2013/01/24/getting-pointpositions-from-a-group/
On 29/04/2013 3:03 PM, Grahame Fuller wrote:
I agree it should have been documented, and it's partly my fault that it isn't. I simply
wasn't aware of the issue (there was no item called "truncate array data for
groups" in our database) and never stumbled across it until later.
I don't work on the Softimage docs anymore, but you should log a bug for the
current writers to add something to the docs.
gray
From: softimage-boun...@listproc.autodesk.com
[mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Christian
Freisleder
Sent: Monday, April 29, 2013 02:45 PM
To: softimage@listproc.autodesk.com
Subject: Re: cloning points with attributes
Well, that might not be possible for all of us, as Autodesk might not need that
much staff ;)
AND there might be the minor problem that not all of us speak c++ .
But seriously, I think this kind of info should be documented in the specific
area of the help.
Christian
On 29.04.2013 20:34, Guillaume Laforge wrote:
Where do you pull this sort of info?
Just ask Autodesk to work in the Softimage team, this way you will be able to
learn ICE nodes from the source code ;).
On Mon, Apr 29, 2013 at 2:15 PM, Christian Freisleder
<m...@buntepixel.eu<mailto:m...@buntepixel.eu>> wrote:
Thanks for the 2d array hint anyway, that explains some problems I had on a
previous project.
Where do you pull this sort of info?
can't find it in the manual even specifically looking for it!
christian
On 29.04.2013 19:03, Guillaume Laforge wrote:
That make sense as arrays data is not accessed from the Group Geometry node in
this case. Thanks for the precision Grahame :).
On Mon, Apr 29, 2013 at 1:00 PM, Grahame Fuller
<grahame.ful...@autodesk.com<mailto:grahame.ful...@autodesk.com>> wrote:
The issue with arrays occurs only when you try to get attributes directly off
the group, e.g., emit particles at Group.PointPosition.
In the case below, where you are reading attributes at locations on the group
geometry, there is no problem.
gray
From:
softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>
[mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>]
On Behalf Of adrian wyer
Sent: Monday, April 29, 2013 12:16 PM
To: softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com>
Subject: RE: cloning points with attributes
not a problem, i am merging 7 LIDAR scans, each of which has over 10 million
points... a few thousand missing ones won't make a dent!
and surprisingly, Soft is coping with 70million+ points quite well!
a
________________________________
From:
softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com><mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>>
[mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>]
On Behalf Of Guillaume Laforge
Sent: 29 April 2013 17:11
To:
softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com><mailto:softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com>>
Subject: Re: cloning points with attributes
If I remember correctly, the Group Geometry node will re-size any 2D arrays to
the smallest on in the group. So the new point cloud could will miss some data
(incomplete strand positions for example). I didn't double check it, but just
in case :).
Cheers,
Guillaume
On Mon, Apr 29, 2013 at 10:39 AM, Christian Freisleder
<m...@buntepixel.eu<mailto:m...@buntepixel.eu><mailto:m...@buntepixel.eu<mailto:m...@buntepixel.eu>>>
wrote:
Hey Adrian,
I would recommend to collect all your pointclouds with a group Geometry node and plug it into a
"Generate Sample Set" with emission type set to "Point" and Rate type to "all
Points" Rate should be set to 1.
then you can get whatever data is in the pointclouds via a "self.emitlocation"
and pull the data you need from this Location.
you will get a red node if there are custom attributes that are not valid for
all clouds. You can avoid that by setting fake values on the clouds that miss
them.
hope that works for you!
Christian
[cid:image001.jpg@01CE44D9.78316C60]
On 29.04.2013 15:49, Leonard Koch wrote:
I had some quick fun with it. Hope it helps.
On Mon, Apr 29, 2013 at 3:41 PM, adrian wyer
<adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com><mailto:adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com>>>
wrote:
ahhh that's enlightening
the clouds i'm cloning from were created with a custom script that reads
positional and colour data from lidar files, creates a cache, loads the cache
on a new cloud and freezes it
i'm guessing that colour isn't initialised on the original cloud
will experiment
a
________________________________
From:
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[mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com><mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>>]
On Behalf Of Peter Agg
Sent: 29 April 2013 14:34
To:
softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com><mailto:softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com>>
Subject: Re: cloning points with attributes
Hum, it should just work out of the box: it's meant to be a direct clone,
attributes and all. Just done a quick test and it seems to work fine for me
with Color (though this is in 2012).
On 29 April 2013 14:23, adrian wyer
<adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com><mailto:adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com>>>
wrote:
so far so good, but i need to clone points from 7 clouds into one (wrangling
LIDAR data)
point order/ID will be bricked from cloud to cloud
i just assumed (in fact i read in the manual) that attributes would be cloned?!
"All attributes of the source point are available on the target point. For example,
if you want to modulate an attribute on the target point based on the source point."
a
________________________________
From:
softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com><mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>>
[mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com><mailto:softimage-boun...@listproc.autodesk.com<mailto:softimage-boun...@listproc.autodesk.com>>]
On Behalf Of Leonard Koch
Sent: 29 April 2013 14:07
To:
softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com><mailto:softimage@listproc.autodesk.com<mailto:softimage@listproc.autodesk.com>>
Subject: Re: cloning points with attributes
You can get the point position from the main cloud plug it into an add point
node and then use a switch context node to get the color from the original
cloud over into the context of the cloned cloud. Since they both have the exact
same number of particles and since they are ordered the same way, it works very
well.
Attached an image with the nodes I have in an unsimulated ice-tree on the cloud
you are cloning to.[Inline image 1]
On Mon, Apr 29, 2013 at 2:58 PM, adrian wyer
<adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com><mailto:adrian.w...@fluid-pictures.com<mailto:adrian.w...@fluid-pictures.com>>>
wrote:
rtfm not really helping here
i have a cloud of points, and an empty cloud....
using clone point (and a test point in volume) i can copy points from one cloud
to another, but the attributes don't clone... i need the colour to be the same
any tips?
a
Adrian Wyer
Fluid Pictures
75-77 Margaret St.
London
W1W 8SY
++44(0) 207 580
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