[Sidefx-houdini-list] "Parameter" VOP : "Use Input Value If Parameter Not Bound"

guillaume laforge guillaume.laforge.3d at gmail.com
Sat Nov 17 04:19:37 EST 2007


If your operator get a geometry attribute with the same name than one of its
parameters, this parameter is 'bound' or 'overriden' by the geometry
attribute value.
In a vop sop, "use input val if param not bound" just give you an input in
the parameter in order to replace its slider(s) or color value by the input
one. Nothing more.

If your parameter use an input or not, it will always be bound if there is a
geometry attribute with the same name.
You can control "what to do" if a parameter is bound with the  "Is Parameter
Bound" blue output on your parameter node (to control an "if then block" or
a "switch" for example).

Hope this help,

Guillaume Laforge | La Maison

On Nov 17, 2007 12:10 AM, Oodini <svdbg at free.fr> wrote:

> Hello,
> How does this parameter work ?
> I thought from the doc that according this checkbox, the value was
> coming from the one set with the Colop SOP/POP, or else the one set in
> the VOP.
> But it seems that when it is unchecked, the values are multiplied.
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Guillaume Laforge

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