Forums Technical Discussion Copy SOP geo orientation problem

Copy SOP geo orientation problem

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Takeshi
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Hi, I want to instance a square to points of a curve in a way that the square align/orient their axis along the curve, but the box skewed in a weird way, the doc mentioned the orient attribute but I am not clear how to use it, hope someone can give me some helps.

Thanks in advanced

Attachments:
copyTest.hip (50.9 KB)
copyPic.JPG (114.3 KB)

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Bernard
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Hello Takeshi,


I got one solution and that is making your circle geometry XZ plane-based….





bern

Attachments:
copytest_2.hipnc (57.4 KB)

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Takeshi
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Hi, Bernard, thanks for the solution! It works fine, much appreciated.

Though I am still keen to know why it doesn't work in my original case, or more generally, how to control the orientation of the copied geo. I have feeling the problem will come back to haunt me in the future…
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Phenom
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I remember Jason Iverson had nice piece of visual explanation of orientation and motion blur as it realated to instancing geometry, maybe he would be kind enough to point you in the right direction.

-3db
“Don't just look for what you think you will find”

-That CSI guy
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symek
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http://www.sidefx.com/components/com_forum/files/instancing_273.jpg [sidefx.com]
http://odforce.net/wiki/index.php/MantraInstancing [odforce.net]

I think this was Wolfwood (or Edward?)


cheers,
sy.
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Phenom
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ohh my bad, maybe I found it on a link Jason posted and just thought it was his….either way thanks, cuz I was looking for that 2!
“Don't just look for what you think you will find”

-That CSI guy
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MichaelC
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Create some normals and up vectors on the geometry you are copying to.

Attachments:
alignment.hipnc (58.8 KB)

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MichaelC
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Here's another

Attachments:
alignment2.hipnc (53.2 KB)

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Takeshi
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Thanks guy for all the helps. Things are much clear now.

@Michael: Thanks for taking the time preparing the files, they are very helpful. Actually, I think they should be added to the upvector/copy sop helpcard.
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