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Houdini Indie and Apprentice » Rigid Body Particles using UI ?
- blackpixel
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There is an example file with the Emit RBDs feature in the Houdini Help when you search for the RBD Bullet Solver geometry node.
Technical Discussion » How can I crate a Group based on an attribute..?
- blackpixel
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I'm not sure if I understood your last part of the question about “fill it with”, but if you want one group based on certain attributes, then you can add those in the Base Group parameter in the Group Create SOP:
@name=P0,P1,P2,P3,P4,P5,P6,P7,P8
If you want one group for each primitive with the same attribute and a matching group name, then you can do that in a one liner in a wrangle:
setprimgroup(0, s@name, @primnum, 1);
@name=P0,P1,P2,P3,P4,P5,P6,P7,P8
If you want one group for each primitive with the same attribute and a matching group name, then you can do that in a one liner in a wrangle:
setprimgroup(0, s@name, @primnum, 1);
Edited by blackpixel - Feb. 24, 2020 07:37:02
Solaris and Karma » Black pixel artifacts in Karma (Random Walk SSS)
- blackpixel
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Houdini Lounge » HUG for Stuttgart
- blackpixel
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Hi everyone,
we're trying to get an HUG for Stuttgart off the ground!
We already had a unofficial meetup last month and we have a fixed date for the next one:
When: Thursday 30.08.2018, 8pm
Where: Flora & Fauna, Am Schwanenplatz 10
So far we have people involved from Mackevision, RiseFX, Pixomondo, Unexpected and the Filmakademie.
We still have not decided how we want to structure and schedule these meetups, but everyone pretty much agreed on having a mix between casual bar nights and tech talks / presentations / events.
If anyone is interested in joining, drop a reply or pm me
Cheers
Mariusz
we're trying to get an HUG for Stuttgart off the ground!
We already had a unofficial meetup last month and we have a fixed date for the next one:
When: Thursday 30.08.2018, 8pm
Where: Flora & Fauna, Am Schwanenplatz 10
So far we have people involved from Mackevision, RiseFX, Pixomondo, Unexpected and the Filmakademie.
We still have not decided how we want to structure and schedule these meetups, but everyone pretty much agreed on having a mix between casual bar nights and tech talks / presentations / events.
If anyone is interested in joining, drop a reply or pm me
Cheers
Mariusz
Technical Discussion » In FEM, how could I get rid of edginess shapes...?
- blackpixel
- 182 posts
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It looks like it's subdivided and displaced in the shader.
Try Convert Tets SOP -> Tridivide SOP / Subdivide SOP, or render directly as subdivision after the convert.
Try Convert Tets SOP -> Tridivide SOP / Subdivide SOP, or render directly as subdivision after the convert.
Houdini Indie and Apprentice » Pay via Purchase Order and Bank Transfer?
- blackpixel
- 182 posts
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Houdini Lounge » Thoughts on mantra
- blackpixel
- 182 posts
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BradThompson
Most other integrated renderers seem to be able to create their version of an IFD, per-frame, on-the-fly on each render node.
I like having the option of IFD pre-generation, but it feels like an unnecessary impediment when I want to quickly throw a test in the render queue. I feel like there must be a better way to separate what you would need a Houdini Engine license for, and what you would need a mantra license for. Just my $.02.
Yes, but all of the “other integrated renderers” require a seperate license to render or eat a host app license. Mantra tokens are free.
This makes Houdini / Mantra very affordable considering you could either quickly create IFDs from your workstation or have a handfull of Engine lincenses do the work for you. Houdini Engine can also be used for simulations and batch tasks that are not related to FX work, so they are in no way a wasted investment.
Technical Discussion » Particles renders differently vs IPR
- blackpixel
- 182 posts
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Ha! You just rubber duck debugged your problem
Sounds like the camera is scaled or is parented to something that has scaling.
Scaling cameras or lights can result in wrong lighting and shading.
I have not tried it yet, but there is a new feature in 16.5 that ignores camera scaling by default.
If you want to stay in 16.0 you can use a workaround:
- add a Fetch Object to /obj
- pick camera from inside alembic archive
- enable “Use parent transform”
- add a Blend Object and parent it to the Fetch
- disable SX SY SZ
- copy / paste the camera from the alembic and parent it to the Blend
Sounds like the camera is scaled or is parented to something that has scaling.
Scaling cameras or lights can result in wrong lighting and shading.
I have not tried it yet, but there is a new feature in 16.5 that ignores camera scaling by default.
If you want to stay in 16.0 you can use a workaround:
- add a Fetch Object to /obj
- pick camera from inside alembic archive
- enable “Use parent transform”
- add a Blend Object and parent it to the Fetch
- disable SX SY SZ
- copy / paste the camera from the alembic and parent it to the Blend
Technical Discussion » Particles renders differently vs IPR
- blackpixel
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Houdini Indie and Apprentice » Error code?
- blackpixel
- 182 posts
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Stumbled upon the same thing today and it's not related to any external renderer in my case.
Seems like Houdini has a problem with (spare) parameters with the name “open”.
Creating a spare parm with that name produces the same warning and the parameter pane for that node stops updating correctly ( when creating keys, deleting channels etc ).
Seems like Houdini has a problem with (spare) parameters with the name “open”.
Creating a spare parm with that name produces the same warning and the parameter pane for that node stops updating correctly ( when creating keys, deleting channels etc ).
Edited by blackpixel - Oct. 6, 2017 09:11:34
Technical Discussion » Any way to scale faces locally?
- blackpixel
- 182 posts
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You can use the primitive sop for that. The transformations are applied locally per primitive.
Edited by blackpixel - June 27, 2017 15:05:40
Houdini Learning Materials » What is the fastest way to instance a large set of 'File' nodes manually many thousands of times?
- blackpixel
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Is this some kind of quest to find out which software can display the most cubes in the viewport ?
http://forums.cgsociety.org/showthread.php?f=2&t=1438973&page=1&pp=15 [forums.cgsociety.org]
http://forum.isotropix.com/viewtopic.php?f=5&t=2920&view=unread#p11839 [forum.isotropix.com]
And I wholeheartedly agree with edward. This make no sense whatsoever in a production environment.
To solve a complex problem you divide it into smaller problems until you can solve them efficiently.
That's why you build HDAs or setups that help you place these millions of instances. Still want more control? Have more granular rules / attributes that drive the placement or have some parts placed manually.
Hand-placing 400k objects though sounds pretty crazy.
It is still unclear what you are trying to do in the sense of the big picture. What is your project goal ?
Is it just a benchmark ? If so, for what purpose ?
http://forums.cgsociety.org/showthread.php?f=2&t=1438973&page=1&pp=15 [forums.cgsociety.org]
http://forum.isotropix.com/viewtopic.php?f=5&t=2920&view=unread#p11839 [forum.isotropix.com]
And I wholeheartedly agree with edward. This make no sense whatsoever in a production environment.
To solve a complex problem you divide it into smaller problems until you can solve them efficiently.
That's why you build HDAs or setups that help you place these millions of instances. Still want more control? Have more granular rules / attributes that drive the placement or have some parts placed manually.
Hand-placing 400k objects though sounds pretty crazy.
It is still unclear what you are trying to do in the sense of the big picture. What is your project goal ?
Is it just a benchmark ? If so, for what purpose ?
Edited by blackpixel - April 25, 2017 14:50:04
Houdini Indie and Apprentice » Move pivot to geo/geo to pivot or worl center
- blackpixel
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To center it to world you simply need to transform along the reversed pivot location.
To make things easier you can reuse the Center Pivot shelf tool and add 2 lines to it.
Create a new shelf tool:
I only added this:
Now when you click the tool it centers the pivot like before, but when you CTRL click it it also moves the object to the center of the world.
To make things easier you can reuse the Center Pivot shelf tool and add 2 lines to it.
Create a new shelf tool:
import toolutils scene_viewer = None activepane = toolutils.activePane(kwargs) parent = activepane.pwd() if activepane.type() != hou.paneTabType.SceneViewer: # Use the last selected object if parent.childTypeCategory() != hou.objNodeTypeCategory(): raise hou.Error("This tool cannot be executed in this context") selected = [child for child in parent.children() if child.isSelected()] else: scene_viewer = toolutils.sceneViewer() selected = scene_viewer.selectObjects( prompt = toolutils.selectionPrompt(hou.objNodeTypeCategory()), allow_multisel = True, allowed_types = ("geo",)) if len(selected) == 0: raise hou.Error("Nothing was selected") for center_obj in selected: display = center_obj.displayNode() if display is None: pivot = hou.Vector3(0, 0, 0) # Use 0,0,0 by convention else: geo = display.geometry() pivot = geo.boundingBox().center() center_obj.parmTuple("p").set(pivot) if kwargs['ctrlclick']: center_obj.parmTuple("t").set(-pivot) if scene_viewer is not None: scene_viewer.setCurrentState("objxform")
I only added this:
if kwargs['ctrlclick']:
center_obj.parmTuple("t").set(-pivot)
Now when you click the tool it centers the pivot like before, but when you CTRL click it it also moves the object to the center of the world.
Edited by blackpixel - April 25, 2017 04:20:43
Houdini Indie and Apprentice » Move pivot to geo/geo to pivot or worl center
- blackpixel
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Houdini Indie and Apprentice » cut and pasted a node, node from a different file popped up?
- blackpixel
- 182 posts
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It's not a super secret houdini cache
Houdini stores node clipboards in the temp folder of your system as .cpio files for each context.
SOP_copy.cpio; OBJ_copy.cpio ; VOP_copy.cpio ; FUSE_copy.cpio ; ROP_copy.cpio ; SHOP_copy.cpio ; CHOP_copy.cpio ; COP2_copy.cpio ; DOP_copy.cpio
This allows you to copy from one Houdini session to another or keep the clipboard during restarts like in your case.
With this in mind you can build some nice tools around that and “share” your clipboards with other artists in the company for example.
Houdini stores node clipboards in the temp folder of your system as .cpio files for each context.
SOP_copy.cpio; OBJ_copy.cpio ; VOP_copy.cpio ; FUSE_copy.cpio ; ROP_copy.cpio ; SHOP_copy.cpio ; CHOP_copy.cpio ; COP2_copy.cpio ; DOP_copy.cpio
This allows you to copy from one Houdini session to another or keep the clipboard during restarts like in your case.
With this in mind you can build some nice tools around that and “share” your clipboards with other artists in the company for example.
Technical Discussion » Boolean curves ?
- blackpixel
- 182 posts
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Technical Discussion » Control Cluster of Points with Dot
- blackpixel
- 182 posts
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I don't think anyone can help you with just a vague question and a screenshot.
Can you upload a hip file and describe what you are trying to achieve ?
Can you upload a hip file and describe what you are trying to achieve ?
Houdini Learning Materials » How to show simple PySide window in Houdini Apprentice?
- blackpixel
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This should work:
import hou from PySide2 import QtCore, QtUiTools, QtWidgets class MyWidget(QtWidgets.QWidget): def __init__(self, *args, **kwargs): super(MyWidget,self).__init__(*args, **kwargs) ui_file = '/path/to/file.ui' self.ui = QtUiTools.QUiLoader().load(ui_file, parentWidget=self) self.setParent(hou.ui.mainQtWindow(), QtCore.Qt.Window) foo = MyWidget() foo.show()
Edited by blackpixel - April 15, 2017 10:58:08
Houdini Indie and Apprentice » Why does Houdini 16 Indie come to a crawl when I try to import an OBJ file?
- blackpixel
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You can check how the obj “looks like” in a text editor and search for anything weird. I know that zbrush likes to save a lot of comment data for polypaint colors per face.
If it's always happening with that one OBJ and it's opening fine in other apps, then I'd send it to support and file a bug.
If it's always happening with that one OBJ and it's opening fine in other apps, then I'd send it to support and file a bug.
Edited by blackpixel - April 12, 2017 08:29:53
Houdini Lounge » FMX 2.-5. May 2017 Stuttgart germany
- blackpixel
- 182 posts
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