Pregnancy avoidance
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There's some strange feature (personally I'd call it a bug)- moving the arc\curve endpoint in Z direction distorts the plan view (alters the radius value).
Is some some tool or ruby that would make the curves keep original plan view.
On the picture:
1 The Original geometry- red AB arc
2 Movin B to B1 causes blue\green pregnancy (depends on arc\curve)
3 The Yellow one is what really I need.
Thank you in advance
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i think the easiest thing to do would be to use Fred06's tools on surface plugin to draw the yellow line on then clean up the remaining geometry.
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Yes I know. But it's too complicated to build additional surfaces and then clean it.
All I want is to move vertex in distortion free mode .- Fredos plugin is not always work smooth to me:
http://screencast.com/t/M2Q1NTMzZWUt
- Fredos plugin is not always work smooth to me:
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Well i think your best option is to do it manually, it'll probably be easier than you think...
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Try exploding the arc (right click on it and choose explode arc) before moving its vertices. That might help,
Chris
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@chris fullmer said:
Try exploding the arc (right click on it an dchoose explode arc) before moving its vertices. That might help,
Chris
The blue one is the explode+weld inheritor.
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Yeah, SketchUp is just not going to do it how you want. Its not a bug, its just the way SU works.
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rv1974,
Like Chris I don't see this as a bug. The arc remains an arc, all its segments coplanar. What you are after is probably the helix by moving a single vertex.
That will not happen. The helix does not have coplanar segments. You need to do this manually.Wo3Dan
Edit: the yellow curve is either the 3D helix mentioned above or a coplanar curve created by intersection with a simple face. No arc involved.
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rv1974
You are trying to 'morph" an arc into a 1/4 section of elipse. A intersection of cylinder and plane with the plane perpendicular to the axis of cylinder is a circle, non perpendicular will be a ellipse and arc will not fit that very well. If you draw a triangle using the cylinder center(base) and the two desired end points gives you a plane ref which a section plane can be algned to and intersected with the cylinder to get what you want. You will have to first use the section tool option to make the slice a group to get the intersection. -
Just thinking aloud.. The original SU product placement is urban design\architecture. Historically
the plan (plan view) is the 'alpha and omega' of the design process. I really can't see any benefit\use in curve bulbing. It appears there's a good niche for some ruby geek- the 'Interpolated_vertex_move.rb'.. or something like that
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I would use ...zorro!
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@rv1974 said:
@notareal said:
I would use ...zorro!
for Seppuku?
I don't think that so drastic method is in need
Zorro 2 http://forums.sketchucation.com/viewtopic.php?f=323&t=16038
Tip for use http://forums.sketchucation.com/viewtopic.php?p=216509#p216509 -
Take the arc's end and drag it upward. Take a look at the twisted result in the top view. Zorro.rb is a totally diffrent story- the cylinder in the example picture is just a visual aid.
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you would have to rotate it to keep the original radius, what your doing by moving one end is changing the radius.
you could also draw your arc from A to B1 and set whatever radius you need or snap the radius to existing geometry. -
Take a look at this skp file. Hope it'd explain the problematics better then my broken english does.
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like wo3dan said, that's probably helix that you're after.. when you move the vertex of the curve, it stays proportionally correct...
[edit] oh, just saw your latest example.. a little different i guess.
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i haven't tried it but you might want to check out slope edges in the 1001bit suite
http://www.1001bit.com/products/slopeedges.shtml -
@rv1974 said:
Take a look at this skp file. Hope it'd explain the problematics better then my broken english does.
This explains the need much better... nothing that zorro can do.
But if the issue where like you originally posted, then it's a different story. -
Hi mates! As I can see the disscussion went in the wrong direction (mea culpa).
I have no problem to build this damn ramp and the things like that (with at least 2 difftent ways:
1.extrude plan outline->surface tools->loft (more correct)
2.followmeandkeep.rb->interset with extruded plan (less correct))
Both ways take time and efforts. The aim of this thread was to catch some ruby maker's eye to
the neat (IMHO) idea- to move curve's vertexes in a kinda 'interpolation mode' and without plan distortion, or maybe to find
the already existing script.
Sorry for the lack of clarity
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