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Houdini Indie and Apprentice » No icons trouble
- kahuna031
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This is still an issue under H12 (windows). I was running a clueless virus hunt until I saw this so thx a bunch.
Technical Discussion » displacement shader not working
- kahuna031
- 897 posts
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Technical Discussion » displacement shader not working
- kahuna031
- 897 posts
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My displace shader is not doing anything. Looking at the vex code generated by the material shader builder VOP I only see the surface shaders code being generated. Attaching a seperate displace shader in the displace slot displaces the geo as I expect.
Technical Discussion » Gluecluster attributes
- kahuna031
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The gluecluster/gluenetworkconstraint uses a ‘name’ string type attribute to find the target of the constraint but how does it find the source?
After changing the topology of my voronoi fractured geo the gluenetworkconstraint changes it's guide geometries points locations on second frame of the simulation. Seems like it's doing something clever and hidden to set up the constraints?
After changing the topology of my voronoi fractured geo the gluenetworkconstraint changes it's guide geometries points locations on second frame of the simulation. Seems like it's doing something clever and hidden to set up the constraints?
Technical Discussion » Is H12.0 SPH fluid solver slower than H11.1?
- kahuna031
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second this. Getting explosions in particle fluid simulations. They started just after I switched from h11 to h12 but at least I believe I had a working simulation for a while in h12 too. Now running 12.0.683.
Problem goes away when turning off the Enable Pressure Force.
See playblast for further hints.
Problem goes away when turning off the Enable Pressure Force.
See playblast for further hints.
Technical Discussion » global function from an otl
- kahuna031
- 897 posts
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Technical Discussion » global function from an otl
- kahuna031
- 897 posts
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I'm defining a function at startup through the ‘456.py’ file. I can use this on parameters and through the python shell but not in the otl modules. Any way to solve this?
Thanks!
Thanks!
Technical Discussion » Mask woth particle attribute
- kahuna031
- 897 posts
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Got a flip fluid setup where I need to slow down smaller chunks of liquid. I've built a scalar field that describes where I want a drag field to act. Basically I want this field to drive a mask for a drag field. But the drag gives no effect.
I wonder if maby the grids gets calculated in the wrong order? What would be the proper way to plug this chain together? Currently I got the scalar field calculations plugged into the flipsolvers post solve plug and the scalar field create node chained to the mask node.
Cheers!
I wonder if maby the grids gets calculated in the wrong order? What would be the proper way to plug this chain together? Currently I got the scalar field calculations plugged into the flipsolvers post solve plug and the scalar field create node chained to the mask node.
Cheers!
Technical Discussion » How does the "Gas Target Force" find it's source?
- kahuna031
- 897 posts
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But this only creates an object with a “density” and “sdf” field, when are these applied on the fluid?
Technical Discussion » How does the "Gas Target Force" find it's source?
- kahuna031
- 897 posts
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Through the shelf tool “Attract Fluid” I've got my simulation driven from an object. It all works smooth.
But when I try to change the setup I can't find how the “Gas Target Force” actually access the target geometry? I can see that it creates “goal” fields and calculate the force from them but I can't see how any of that lookups the source geo. Where's the magic connection?
But when I try to change the setup I can't find how the “Gas Target Force” actually access the target geometry? I can see that it creates “goal” fields and calculate the force from them but I can't see how any of that lookups the source geo. Where's the magic connection?
Technical Discussion » calculating octree for object not included in raytracing?
- kahuna031
- 897 posts
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I've got an object that shouldn't be included in any raytracing, yet mantra builds an octree for it. It's a pain as it's octree calculation seem to take infinite time on a certain frame. Other octrees goes fine but on this the render stays, with RAM usage frozen and one processor on full speed.
It's name doesn't match the shaders raytracing “Object scope” and I've unchecked “enable raytracing” render parameter on the object. I've changed KD settings and switched ray-tracing accelerator but no luck. I DID get it to go through once when I moved the camera but not when I moved the object itself. Understandably, the camera need to be in place so that's not a solution.
Any ideas on how to skip this octree calculation or pushing it through would be appreciated.
It's name doesn't match the shaders raytracing “Object scope” and I've unchecked “enable raytracing” render parameter on the object. I've changed KD settings and switched ray-tracing accelerator but no luck. I DID get it to go through once when I moved the camera but not when I moved the object itself. Understandably, the camera need to be in place so that's not a solution.
Any ideas on how to skip this octree calculation or pushing it through would be appreciated.
Work in Progress » People rising for social justice
- kahuna031
- 897 posts
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very nice. Good initiative, we need more good looking movements out there.
The cube itself works well. Some love need to be given to the background. I would also like to see a new element to help tie together the footage and its abstraction (the cube), this would help the “story telling”.
The cube itself works well. Some love need to be given to the background. I would also like to see a new element to help tie together the footage and its abstraction (the cube), this would help the “story telling”.
Technical Discussion » transform in rib archive export
- kahuna031
- 897 posts
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yeah I'm using the rib archive
I'm on build 10.0.554. I'll check with our tech guys then and see if I can get the fix….
thanks mate!
I'm on build 10.0.554. I'll check with our tech guys then and see if I can get the fix….
thanks mate!
Technical Discussion » transform in rib archive export
- kahuna031
- 897 posts
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the rib exporter puts the houdini object transform at the start as can be seen in the example below. Can this be removed? It overrides any pre-transforms I've given the archive. Maby using the concatenateTransform instead would solve it.
AttributeBegin # {
# Geometry object /obj/myGeo
Transform
Attribute “identifier” “string name” \
…
AttributeBegin # {
# Geometry object /obj/myGeo
Transform
Attribute “identifier” “string name” \
…
Technical Discussion » python expressions semi time dependent
- kahuna031
- 897 posts
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Never mind. Solved by extracting all expandString() and only using evalParm() in non time dependent functions.
Technical Discussion » python expressions semi time dependent
- kahuna031
- 897 posts
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I think it might be the hou.expandString() that causes my issue. This expression would become time dependent:
`pythonexprs(“hou.expandString('geo.0010.bgeo')”)`
while this wouldn't
`pythonexprs(“'geo.0010.bgeo'”)`
can I expand the string so that houdini can recognize it's time dependence?
`pythonexprs(“hou.expandString('geo.0010.bgeo')”)`
while this wouldn't
`pythonexprs(“'geo.0010.bgeo'”)`
can I expand the string so that houdini can recognize it's time dependence?
Technical Discussion » python expressions semi time dependent
- kahuna031
- 897 posts
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I got an pythonexprs() that generate a path, sometimes this path is time dependent sometimes it isn't but the node consistently gets time dependent. How do I control that the node doesn't get frame dependent if the expression isn't?
thanks a bunch!
thanks a bunch!
Technical Discussion » hdaModule calls from other nodes
- kahuna031
- 897 posts
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I think I found the solution in an old post here, don't use relative paths, pass a node path to the function instead.
(just a note, it might be a good idea for all of the examples to stop using relative paths if they're a bad approach)
(just a note, it might be a good idea for all of the examples to stop using relative paths if they're a bad approach)
Technical Discussion » hdaModule calls from other nodes
- kahuna031
- 897 posts
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say this is the python code on a hdaModule:
def outTest():
thisNode = hou.pwd()
myParm = thisNode.parm('aParm')
return myParm
calling this from a string parameter on the node by
`pythonexprs(“hou.node('.').hdaModule().outTest()”)`
gives me the expected output:
<hou.Parm ele in /out/myHDA>
but when calling it from another nodes attribute or hdaModule in another directory I get “none”
If I want to output the value of “thisNode” it behaves as expected.
How do I fix this?
My guess is that thisNode is a relative path and can't find “myHDA” when it's under another parent but I haven't found a way to test this.
def outTest():
thisNode = hou.pwd()
myParm = thisNode.parm('aParm')
return myParm
calling this from a string parameter on the node by
`pythonexprs(“hou.node('.').hdaModule().outTest()”)`
gives me the expected output:
<hou.Parm ele in /out/myHDA>
but when calling it from another nodes attribute or hdaModule in another directory I get “none”
If I want to output the value of “thisNode” it behaves as expected.
How do I fix this?
My guess is that thisNode is a relative path and can't find “myHDA” when it's under another parent but I haven't found a way to test this.
Houdini Lounge » Edge Grouping?
- kahuna031
- 897 posts
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Ive always felt that modeling will stay virtualy useless until some semi procedural interface is developed. Switching between different tools such as brushes and softmodification needs to run seemlessly to be able to model in a artistic mindset. UI is far more urgent then adding more mesh functions.
That said, there's already linear modeling packages but only one real procedural modeler so Im not sure it would be worth it. Maby support the I/O for geo instead and keep ruling the procedual kingdom.
But please make it possible to edit groups of curve points at the same time on the curve node
That said, there's already linear modeling packages but only one real procedural modeler so Im not sure it would be worth it. Maby support the I/O for geo instead and keep ruling the procedual kingdom.
But please make it possible to edit groups of curve points at the same time on the curve node
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