Forums Houdini Indie and Apprentice Constrain straighten to view plane, How ?

Constrain straighten to view plane, How ?

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julca
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Hello,

I try to align edges but only on Y axis, I try the “Constrain straighten to view plane” but without success.
Can you tell me what I miss please ?

Thank you
Edited by julca - Feb. 12, 2020 03:31:08

Attachments:
straighten_Edge.gif (474.8 KB)
constraint_straighten.hiplc (130.0 KB)

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Werner Ziemerink
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You can try to use scale.

1. Select the points and press e to scale
2. Switch on point snapping
3. disconnect the pivot by using the ‘ hotkey.
4. Snap the scale handle to any of the point positions to scale from.
5. hit ’ again to accept the pivot position
6. Scale on y

Attachments:
scale_snap.mp4 (2.7 MB)

Werner Ziemerink
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julca
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@Werner Thank you for your response.
In my case (you can look at hip file in first post), there a Y slope between first and last edge so I can't just scaling to 0 in y.

I would like to know how to well use the “Constrain straighten to view plane” option to quick acheive what I want (if it's possible).

Attachments:
whatIWant.jpg (41.8 KB)

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vusta
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is this what you want ? Note you still have an odd point on the far right, I'll leave that to your mods.

Attachments:
vu_constraint_straighten.hiplc (129.1 KB)

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julca
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@vusta, thank you for your response.
No, I want the slope but I want to keep my “road” curvature.
That's why I ask for the "“Constrain straighten to view plane” to only straighten Y value without move in X,Y.
But I don't know how to use it.
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DmitriiP
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Something like This?


If yes: change View to “Right viewport” before “Constrain straighten to view plane”

Image Not Found
Edited by DmitriiP - Feb. 12, 2020 18:48:26

Attachments:
constraint_straighten1.hiplc (128.9 KB)
sshot_811.jpg (83.9 KB)

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vusta
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julca
@vusta, thank you for your response.
No, I want the slope but I want to keep my “road” curvature.
That's why I ask for the "“Constrain straighten to view plane” to only straighten Y value without move in X,Y.
But I don't know how to use it.
then isn't it just scale Y to 0 in the edit ?
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julca
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@vusta it's not a simple scale to 0 because I want a progressive slope in Y between first and last edge points.

@DmitriiP, Yes !! I have not test on this side, (only on front).
It give a good result, thank you !
There still a offset on x and z when it's done (which I want not) but I think we can't do better with this method.
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Werner Ziemerink
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Oh, I thought you wanted to flatten all on y.

How about this. Same process as before, but align the handle with ; hotkey to the last point.

Attachments:
scale_align.mp4 (3.5 MB)

Werner Ziemerink
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julca
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Hello @Werner,

Thanks very much for this tip (and video record), I never use alignement tool with this pointing target function !
It's the better I can do (still a bit of offset on x and z when it's done :/ )
Edited by julca - Feb. 13, 2020 07:30:37
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DmitriiP
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Edge Straighten + small filter
Edited by DmitriiP - Feb. 13, 2020 14:43:00

Attachments:
straighten_edge.hiplc (136.3 KB)
sshot_812.jpg (53.6 KB)

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julca
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@DmitriiP, simply PERFECT !
Thank you !
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