metaclay
July 13, 2006 04:10:08
1. in shop level ( i'm previewing shader on viewer), i can preview both surface and displacement shader simultaneously.
but if i created the shop network inside sop level, i cannot do something like this. how to fix this?
2. in a node parameter (example : group node) i try to ‘save as permanent default’. but it always give me an error :
couldn't sae presets “new preset” to $HOME/houdini8.0/presets/Sop/group.idx
check file permissions,
i'm sure i've checked this path over and over….and it's there correctly with the right read/write permission. still i cannot write to this file. why?
anyone can help?
pbowmar
July 13, 2006 08:49:35
1. Is a bug I reported in Houdini 7 (
2. Very strange.. is that Windows?
moreguns
July 16, 2006 05:14:13
Can a displacement map be used to change the actual geometry of a model? Please advise.
JColdrick
July 16, 2006 07:28:25
Inasmuch as it physically displaces the points of the data, yes. Do you mean in another way?
Cheers,
J.C.
moreguns
July 16, 2006 14:22:23
I'm new to any other “deformation/displacement” possibilities (just getting started) but if there are other alternatives please let me know what they are and how they would work (via Houdini or anything else).
My goal is to quickly change a model's form into the shape of something else (similar not too drastic), like a “pugg” nose into a straight nose or vice versa. Or a small ear to a slightly bigger ear (to reiterate) and afterwards have the actual geometry change to fit the new displaced data.
(Sorry for the redundancy).
So again, yes, it sounds like this would work according to your answer. But how is this achieved within Houdini? Can a container be used that does this for me (compare the model to be changed (displaced) to the “displacer” model (style used))?
thanks again
JColdrick
July 16, 2006 17:31:55
There's never any absolutes, but I probably wouldn't use disp maps to change a long nose to a pug nose - I'd build the two models from the same basic shapes and blend between them using the blend SOP. It's just that a nose is fairly complicated and twists around in space what with nostrils and such - it's not just an extruded grid.
That aside, you could write a shader in VOPs that blends between two image map inputs and use that as a displacement, should you want to do that.
Cheers,
J.C.
moreguns
July 19, 2006 03:00:14
So in Houdini it seems I don't have to worry about the fact that the 2 objects don't have the same geometry. Houdini will handle the deformations with ease, correct?
JColdrick
July 19, 2006 19:41:05
No, it's essentially blending between positions - you need to have the same data(surface type, number of points, etc.).
Cheers,
J.C.