[Sidefx-houdini-list] Material prefixes on parameter namesquestion

Víctor M. Muriel riotnews at gmail.com
Mon Dec 15 16:54:27 EST 2008


Hey Phil, forget my answer, your question is only for material parameters
names, ok, my fault.



On Mon, Dec 15, 2008 at 7:12 PM, Phil Spicer <PSpicer at bournemouth.ac.uk>wrote:

> Hi Robert,
>
> Yes, this is a difference that occurred between H9 and H9.5
>
> Kind regards,
>
> Phil.
>
>
>
>
>
> -----Original Message-----
> From: sidefx-houdini-list-bounces at sidefx.com [mailto:
> sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Robert Magee
> Sent: 15 December 2008 14:54
> To: sidefx-houdini-list at sidefx.com
> Subject: Re: [Sidefx-houdini-list] Material prefixes on parameter names
> question
>
> Since the parameters at the material level are referencing channels inside
> the material then the parameters can have any name you want and it will work
> fine. The parameters could have been called tipColor and everything would be
> fine since hair_tipColor is simply referencing a tipColor parameter on the
> shader inside the material.
>
> If you turn a SHOP into a material by putting it into a subnet then
> RMB-click on the material and choose Promote Material parameters then the
> names will not have prefixes. For the hair material, someone probably used
> the edit parameter interface to give them more flexibility organizing the
> look of the material's ui and ended up adding the prefixes.
>
> Robert
>
>
> On 15-Dec-08, at 6:08 AM, Phil Spicer wrote:
>
> > Hi,
> >
> > Why do material parameter names have a material prefix assigned to
> > them?
> >
> > For example, if I wanted to modify a hair material Tip Color parameter
> > on a per hair basis, I have to create a attribute called tipColor (the
> > internal shader parameter name) using and Attribute Create SOP; yet
> > when I hold the mouse over the hair material parameter listing, the
> > internal name is returned as hair_tipColor, which doesn't work as a
> > parameter override name.
> >
> > Isn't this incongruous to how the rest of Houdini works, and an
> > additional layer of complexity for new users?
> >
> >
> > Kind regards,
> >
> > Phil.
> >
> >
> >
> > The UK's no. 1 new university
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> ----
> Robert Magee
> Product Marketing Manager
> Side Effects Software Inc.
> www.sidefx.com
>
> 416 504-9876 x327
>
>
>
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>
>
> The UK's no. 1 new university
> The Guardian University Guide 2009
>
> This email is intended only for the person to whom it is addressed and may
> contain confidential information. If you have received this email in error,
> please notify the sender and delete this email, which must not be copied,
> distributed or disclosed to any other person.
> Any views or opinions presented are solely those of the author and do not
> necessarily represent those of Bournemouth University or its subsidiary
> companies. Nor can any contract be formed on behalf of the University or its
> subsidiary companies via email.
>
>
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-- 
-------------------------------------
Víctor M. Muriel
http://vito.lucuslegion.com


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