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Solaris and Karma » How to edit Point Instancer prim with Sop Modify?


jerry7: 665 posts; Offline

2020年4月20日 02:42:54

mtucker
Try the Modify Point Instances LOP.

Even if that LOP doesn't give you exactly what you want, it is an HDA so you can look at how it is built and customize it to your liking.

It seemed some problem with modify point instance lop.

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Houdini Lounge » How to set help window NOT always on top?


jerry7: 665 posts; Offline

2020年4月19日 21:41:07

Hi,

How to set help window Not always on top? It seemed not work in RMB menu “Always On Top”.

Thanks!

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Solaris and Karma » How to edit Point Instancer prim with Sop Modify?


jerry7: 665 posts; Offline

2020年4月15日 10:37:44

Hi,

I download a .usd file with Point Instancer inside it. I want to import the instancer points prim (not prototype) to sop for editing (edit point's position, count, size… ), and import back to lop network. I test many options, but all those can't keep PointInstancer.
How to import back to lop with keeping the PointInstancer prim type?

Thanks for any tips!

Edited by jerry7 - 2020年4月15日 10:38:01

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Solaris and Karma » Specializes composition arc question ?


jerry7: 665 posts; Offline

2020年4月13日 22:38:22

Thanks a lot!

I will study these concepts more.

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Solaris and Karma » Specializes composition arc question ?


jerry7: 665 posts; Offline

2020年4月13日 05:05:00

Hi,

I test the Specializes composition arc. I reference the box inline code to stage.
I expect the size will keep 1.0, but the result is 4.0 ( same as inherits arc ).
Where did I make a wrong?

Thanks for any tips!

box inline:

#usda 1.0
class Cube "_class_box" {
    double size = 1.0 
}

def Xform "box"
{
    def "box_special" ( specializes = </_class_box>)
    { 
        
    }
}

stage inline:

#usda 1.0

class "_class_box" {
    double size = 4.0
    color3f[] primvars:displayColor = [(1, 0, 0)]
}

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Solaris and Karma » Why so many placeholder layers?


jerry7: 665 posts; Offline

2020年4月13日 04:51:19

jason_iversen
They are useful beyond “mess”, yes.

Adding new sublayers is expensive (sometimes taking several seconds to create), so Solaris maintains a “buffer” of placeholder layers that can be repurposed as and when new layers are created while you're working. This way, the number of times you incur the new layer overhead is reduced substantially. This speeds up general fluidity during scene building.

Thank you for reply!
It should be better for hiding these cache layers.

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Solaris and Karma » Why so many placeholder layers?


jerry7: 665 posts; Offline

2020年4月13日 04:20:41

Hi,

Why are there 3 placeholder layers? Are they useful except for mess?

Thanks!

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Technical Discussion » Bevel in .411


jerry7: 665 posts; Offline

2020年3月20日 20:34:39

No problem in my 411

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Technical Discussion » Set raw value with python


jerry7: 665 posts; Offline

2020年3月20日 19:19:15

If you want set parameter, just set it.

hou.parm('/out/mantra1/vm_picture').set("$HIP/$F4.jpg")

If you want get raw value of parameter,

print hou.parm('/out/mantra1/vm_picture').rawValue()

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Technical Discussion » How to avoid a big mess with OTLS and SCRIPTS?


jerry7: 665 posts; Offline

2020年3月20日 18:55:23

I think you could keep local home folder for you, and use $SITE for others.
If you worry about others altering, make them read only or sync hda file every startup.

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Technical Discussion » How to draw text in the viewport regardless of viewer state?


jerry7: 665 posts; Offline

2020年3月16日 18:41:00

Hi,

You can add The OGL Viewport Comment (vcomment) property to camera from render properties section of spare parameter editor.

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Houdini Lounge » How to avoid Edit Sop lost when change tool ?


jerry7: 665 posts; Offline

2020年3月12日 23:42:57

Hi,

The Edit SOP will lost when you select a component(don't move actually) and switch from move tool to select.
I know it is because the edit sop has no effect for result. I'm making a tool working with the Edit SOP. But it often lost by some click. How to avoid this lost?

Thanks for any tips!

Edited by jerry7 - 2020年3月12日 23:43:19

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Houdini Lounge » What's meaning about the pink border of a node?


jerry7: 665 posts; Offline

2020年3月12日 07:24:57

Hi,

What's meaning about the pink border of a node?

Thanks!

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Houdini Lounge » Can lock node selection?


jerry7: 665 posts; Offline

2020年3月12日 07:18:19

mandrake0
Hope this helps:
https://youtu.be/J8hwiYkBnQc [youtu.be]

Hi mandrake0,

Thanks for reply.
I tested exposing handle, but it seemed that not worked with edit handle.

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Houdini Lounge » Can lock node selection?


jerry7: 665 posts; Offline

2020年3月11日 21:21:32

Hi,

I make a tool that work with Edit Sop and it must be current node. I want to avoid user selecting other nodes. Are there anyway to implement?

Thanks for any tips!

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Houdini Indie and Apprentice » How to break Merge Sop's all input Connections with python?


jerry7: 665 posts; Offline

2020年3月3日 18:11:45

tamte
if you are deleting from left the inputs always shift, so you want to always delete input 0
for input in merge.inputs():
    merge.setInput(0, None)
deleting from the right should work with i

It worked! Thank you very much!

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Houdini Indie and Apprentice » How to break Merge Sop's all input Connections with python?


jerry7: 665 posts; Offline

2020年3月3日 04:42:32

Hi,

How to break Merge Sop's all input Connections with python?
I use merge.setInput(i,None) in a loop but it doesn't remove ALL connections. How to do it ?

Thanks for any tip!

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Houdini Lounge » How to easein easeout for eqlinear() ?


jerry7: 665 posts; Offline

2020年2月24日 01:24:30

Hi,

How to ease in, ease out for qlinear() interpolation animation?

Thanks!

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Houdini Indie and Apprentice » How to Rollback fail operation in python panel?


jerry7: 665 posts; Offline

2020年2月19日 17:45:41

Hi,

The Self tool can rollback fail operation when some exceptions occurs. How to implement this feature in python panel button callback?

I tested the performUndo,but I can not pre-known if there are some operations need to be undone. If I perform undo directly on failure, the previous operation may be undone sometimes.

Thanks for any tips!

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Technical Discussion » How to invoke a tool from a shelf via Python scripting


jerry7: 665 posts; Offline

2020年2月16日 06:47:29

hou.SceneViewer.runShelfTool(tool_name) can also do it.

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