Ok. using a Mac computer and 4r8p1 and can not get any elevation with the Modeller brush when closing OR bridging holes.
Moving up and down gives more resolution to the bridge but…
Moving horizontal gives no resulting curvature.
I am using the default settings for the Modeller brush.
Bridge>TwoHoles>Spline>interactive curvature>Interactiveresolution>Polygroup columns>Pivot on hole center>Auto align edges.
Any ideas why guys?
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This appears to be the normal behavior of the tool, though I can’t offer specific explanation.
Correct me if I’m wrong, but in that pic it looks as if you have evenly split two sides of a polysphere, and moved them apart so that they are perfectly aligned on either side? In that situation there’s no real curve to draw. If you were to move one of the sphere halves up or down, or to the side so that it wasn’t perfectly facing the other hole, you would get curvature when using the tool with those settings.
Likewise, you could just select two smaller, unaligned holes on the surface of the object at random, and you would see the curve functionality when bridging two holes in edge mode.
I created the center portion with the bridge command.
imagine two upright tubes and you wanted to create an arc
connecting the Two.
this is the functionality i want to use.
its been clearly demonstrated by J Drust.
ZModeler Edge Actions - Edge Close
these pictures below are from Josephs videos demonstrating the vertical AND horizontal motion that creates the rings AND the looping or ballooning.
Horizontal motion gives me no result at all and i can not achieve ballooning or curvature.
Yes, it’s always important to follow a tutorial exactly to replicate results. As I tried to explain, the two hemispheres have holes that are almost perfectly aligned and facing each other. The plane of the holes must pass a certain threshold of angle variation in order to generate a curve. This is simply the way the tool works.
In the case of the convex hole, when replicating the geometry Joseph is working there, it works fine. It worked fine on any number of other shapes I tested. But there is something problematic for that operation with the configuration of that particular hemisphere. I too ran into the same problem with a similar polyshphere, but when I generated a different polysphere with less geometry, it worked fine.
I can offer no explanation for the latter issue.
My best guess about the Close Hole issue is that it has to do with polycount. Too many vertices lining the edge of the hole in that particular configuration (open circular geometry), and the elevation function fails to work.
I can swallow the principle of too small an angle. I can also try a different half sphere.
but why would the two cylinders not produce an arch?
I don’t know. I have no problem executing that scenario:
How are you generating the geometry you’re using?
Yes.
Less polys does the trick.
Thank you. we have the answer.
i appreciate your help. i´ll be able to sleep tonight.
Geo is from the new gizmo.
Oh NO.
just saw your last piccy.
Rats. Now i have to try that one.
I think i have more.
You have to pull FAR ENOUGH to the right to get the elevation.
But as you mentioned, lower res helped and they might also be some issues due to how the geo was made.
sometimes it worked and other times just NO WAY.
but i am happy with this exploration and again thank you. very much.
You are part of what makes this community great.
Well, it’s important to keep in mind that all of these problems were different issues. It’s not necessarily a one problem issue. The first two issues were reasonably explained, but you shouldn’t be having trouble executing the two cylinder bridge scenario.
Do you have the same problem with mouse and tablet pen?
Have you scaled your interface buttons extremely small or large (at the limit in either direction?)
Is your monitor resolution running any smaller than 1920 x 1080?
As far as I can tell it has something to do with standard zbrush circular cap shapes (I imagine a perfect sphere cut in half makes an identical hole). I have issues making it work on cylinder caps frequently. However, if I clip the side of the cylinder even just affecting at least 3 consecutive points of that calculated circle or nudge even one point of the opening a bit it works again. For some reason it just seems to have issues with “SOME” circular holes. Never seem to have an issue if I make the circular hole using split point though. I can’t make sense of it myself, but if that information helps somehow, awesome.
I tried scaling to make an oval hole out of a cylinder end, but for whatever reason it doesn’t seem to like working on perfect ovals either (correction, it will work on narrow enough ovals). The close convex curvature feature does work on q-cylinders with up to 24 sides with a cap removed. (i.e. X Res, Y Res, Z Res all set to 6). An Oval Q Cylinder with 26 sides will also work, but if you set them all to 7 and end up with 28 sides it stops working unless you modify the shape of the opening enough.
So, after a lot of experimentation I believe the erroneous behavior actually occurs when all angles between line segments along the edge of the hole you are trying to close are below a certain angle threshold. This would explain why nudging one point out of alignment enough causes the function to operate as expected again. Also explains why a narrow perfect oval will work, but not a slight oval.
Just for further information: Functionality of curvature on close convex holes breaks on generated Cylinder 3D caps with an HDivide exceeding 18.