Select and wrap boundary method?
Select and wrap boundary method?
I have done this steps (image1):
1. Clone a mesh like Houdini CopyOp.
2. Cutoff for this clone.
3. Weld points to obtain single boundary.
At this point I would like 'procedurallize' some actions that I need to do (handly done in image2)
4. Select boundary.
5. Duplicate edge boundary.
6. Apply a Shrink wrap o construct similar procedure to obtain 'extrapolate' edge boundary to shape.
Image1
Image2
1. Clone a mesh like Houdini CopyOp.
2. Cutoff for this clone.
3. Weld points to obtain single boundary.
At this point I would like 'procedurallize' some actions that I need to do (handly done in image2)
4. Select boundary.
5. Duplicate edge boundary.
6. Apply a Shrink wrap o construct similar procedure to obtain 'extrapolate' edge boundary to shape.
Image1
Image2
Re: Select and wrap boundary method?
I found this article and compund, and as note says, from SI 2012 it have own methods to get boundaries from components. However I don't see any ice attribute like 'EdgeBoundary'.
Then there are some attribute to get boundary edges?
Then there are some attribute to get boundary edges?
Re: Select and wrap boundary method?
I have found this approach but from get VertexIsBorder I obtain all share edges for points that condition is true. How I could get only 'EdgeIsBorder' from these border points?
Re: Select and wrap boundary method?
Hi,
I like the intention but since you mentionned houdini a simple question : why spending days to find how to do that in soft while in another package this nearly is a 3 clic operation ???
I like the intention but since you mentionned houdini a simple question : why spending days to find how to do that in soft while in another package this nearly is a 3 clic operation ???
Re: Select and wrap boundary method?
Well, this have a easy answer. I'm not a math brain profile, and procedural thinking is hard for me, so don"t matters the software in this question.
However, eventually I have to model some stuff that it looks propertly using procedural methods, so I try.
I'm a Softimage user from XSI 3, and have been use this package daily, so where I don't be enough by procedural it's very easy for me do it by hand modelling.
In other side I messing arround with Houdini from version 8, but I never it used seriously. Also at current day I keep seeing Houdini as not user friendly for traditional modelling methods.
Despite this and come back to the topic, I tried build the same in Houdini. I have to say that you have reason in your affirmation. However I have should asked in Houdini forum how to build a cutoff for CopyOp, and now I'm locked that the group sop gets only connected points/poly islands.
However, eventually I have to model some stuff that it looks propertly using procedural methods, so I try.
I'm a Softimage user from XSI 3, and have been use this package daily, so where I don't be enough by procedural it's very easy for me do it by hand modelling.
In other side I messing arround with Houdini from version 8, but I never it used seriously. Also at current day I keep seeing Houdini as not user friendly for traditional modelling methods.
Despite this and come back to the topic, I tried build the same in Houdini. I have to say that you have reason in your affirmation. However I have should asked in Houdini forum how to build a cutoff for CopyOp, and now I'm locked that the group sop gets only connected points/poly islands.
Re: Select and wrap boundary method?
You can try using EdgeToNodes for this. It outputs an array of nodes (samples) per edge.
If the array size is 2 it should be a border edge(?) No idea if this works.
--------------
edit .. turns out the size of the array is always 4. But if the edge is on the border, you'll find -1 entries in the array. That's how you could identify them
If the array size is 2 it should be a border edge(?) No idea if this works.
--------------
edit .. turns out the size of the array is always 4. But if the edge is on the border, you'll find -1 entries in the array. That's how you could identify them
softimage resources section updated Jan 5th 2024
Re: Select and wrap boundary method?
Thank you for your reply rray. Finally I used the compound isBoundary above linked. However I will try your method.
Last edited by Unaided on 09 Nov 2016, 07:02, edited 1 time in total.
Re: Select and wrap boundary method?
Now I'm locked into step 4 and 5.
By one side IsBoundary return an array with index edges
In the other side I have a get self.PointPosition to ClosestLocation of target geometry acting as deformer like ShrinkWarp.
I would like filter this self.PointPosition with Points of the edges from isBoundary. I do not found how to get this data.
Essentialy I would need get each point of the each edge of which I know its index (data from IsBoundary).
By one side IsBoundary return an array with index edges
In the other side I have a get self.PointPosition to ClosestLocation of target geometry acting as deformer like ShrinkWarp.
I would like filter this self.PointPosition with Points of the edges from isBoundary. I do not found how to get this data.
Essentialy I would need get each point of the each edge of which I know its index (data from IsBoundary).
Re: Select and wrap boundary method?
I have seen VertexIsBorder attribute that is useful for me.
So I don't need find the way to get points from edge index returned by isBoundary compound.
So I don't need find the way to get points from edge index returned by isBoundary compound.
Re: Select and wrap boundary method?
Finally I have completed this personal excercise, and I wish to share here a videotutorial that I have been done. Thanks so much the people for its help.
Copies with cutoff in Softimage
Too I wanted try to do the same excercise in Houdini, and I have been a great experience.
CopySOP with cutoff in Houdini
PS. My apologizes for my bad english.
Copies with cutoff in Softimage
Too I wanted try to do the same excercise in Houdini, and I have been a great experience.
CopySOP with cutoff in Houdini
PS. My apologizes for my bad english.
Re: Select and wrap boundary method?
Very nice. Do you think it is possible to have a progressive or stepped reducing in size to fill more area?
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