From what I discovered so far in Houdini I would say there are a lot of
different ways to create something like strands. The main difference is
that there isn't something like an array of strandpositions (or an array
of what ever strandproperties). Instead there are simple point positions
which are connected. That means that if you want to control each strand
and it's positions (or whatever properties) seperately you have to asign
something like a strand ID by yourself. An easy way to do this is by
using the resample node for example. You set a 'curve number attribute'
with it. Also it has the nice 'curve u attribute' (same as strand ratio
/ length).
So I would say the main difference is that you do not deal with arrays
(of strandproperties) but with normal point properties which you have to
organize by yourself.
A very basic way to create strands is the volume trail (you mentioned)
or also by using a simple solver to build up something like the generate
strands trail ICE node (than you can use the original point ID as strand
ID). Also the use of the basic add node is possible to connect the
points. But there are so many more ways in H as usual :)
Also regarding the polywire, depending on the renderengine you plan to
use and the look you are after you don't have to use the polywire at
all, but can render the curves directly.
Best
Tim
Am 02/03/17 um 12:05 schrieb Tim Bolland:
Hey guys, I'm after a little advice. I'm currently looking at building
a some nice fluffy clouds made up of strands and from what I can see
there a load of different ways to achieve something like this Houdini.
Quite of few of the results I've seen demonstrated online are achieved
by creating a velocity volume and drawing these the velocities out.
These look nice but I cant really figure out a way to edit them
afterwards. Other methods I've seen that look promising take points
and running them through a Polywire, however there seem to a load of
ways to group these points together and nothing is as succinct at
position / strandposition
What I'm wondering is what do you recommend? Is there a method of
strand creation / manipulation that gives you a nice amount of
flexibility and control? I've always been a huge fan of ICE strands,
and the concept of starting with some points, building up
strandpositions a long these points and controlling the properties of
the strands by either the point ID or the strandposition ID.
From what I can see there is not equivalent workflow that I can find,
at least not out of the box. I can make polywires with ID's and
manipulate this, but I'm still a little confused about the ID vs
strandID context equivalent and how to manipulate each of them. Any
advice would be appreciated.
Cheers,
Tim
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