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
<[email protected] <mailto:[email protected]>> 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: [email protected]
<mailto:[email protected]>
[mailto:[email protected]
<mailto:[email protected]>] On Behalf Of
adrian wyer
Sent: Monday, April 29, 2013 12:16 PM
To: [email protected]
<mailto:[email protected]>
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: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
[mailto:[email protected]
<mailto:[email protected]>] On Behalf Of
Guillaume Laforge
Sent: 29 April 2013 17:11
To: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
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
<[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>> 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:[email protected]]
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
<[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>> 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: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
[mailto:[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>] On Behalf Of
Peter Agg
Sent: 29 April 2013 14:34
To: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
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
<[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>> 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: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
[mailto:[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>] On Behalf Of
Leonard Koch
Sent: 29 April 2013 14:07
To: [email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>
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
<[email protected]
<mailto:[email protected]><mailto:[email protected]
<mailto:[email protected]>>> 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
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London
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