Share Tweet Facebook. It has holes.I understand! This process does not remove anything in the underlying four sided surface definition, what it does it introduce curves onto the surface that Rhino then understands to be trim curves and it knows to show you only the part of the surface that…
Hi Adam- NURBS surfaces are always 4 sided, topologically, making some sort of rectangle, albeit often a distorted one.
In that case you will have to manually create a single (untrimmed) surface in Rhino that approximates your shape and desired UV arrangement (since Isotrim is following the UVs when it cuts. So starting from 3 curves, is there a way to create an untrimmed surface?IF there are holes then no.
Think of trimmed surfaces as using an underlying NURBS surface and closed curves to cut a specific shape of that surface. See Rhino Level 2 Training manual for more details). If you bake something like this and then turn on the points, you’ll see all of the control points even for the areas of the surface that aren’t visible. When textures are applied to surfaces, the textures map to the underlying untrimmed surface. I think the UV arrangement is the problem.Thanks Ethan!
Permalink Reply by Luigi Giovannini on November 19, 2013 at 3:05am. But instead of the trimmed hexagon surface (green in screen shot), “isotrim” applies to a 4-egde surface (red in screen shot) which is bigger. Hi, is it possible with Maya to import CAD files containing trimmed NURBS surfaces and convert them to untrimmed Bezier patches? If I can reconstruct the surface within a specific tolerance using the borders and perhaps some intersection lines (against perpendicular planes/surfaces) to capture the inner structure, I then recreate the surface using loft or Sweep2 or some other tools based on these curves. time ago I did it but now I don’t remember how I did is not there a way to do it? convert trimmed surface to untrimmed surface without changing its shape. Is it possible to convert trimmed surface to untrimmed surface without changing its shape? RSS. Those trimming curves exist on the underlying surface. Replies to This Discussion Permalink Reply by Pascal Golay on November 30, 2012 at 8:35am.
Tip: Turn on the Show Edge Deviations and Show Surface Deviations options to attach deviation locators to the resulting surface to see how much the new surface differs from the original.
Usually remodeling as a single srf can be faster than this though. In most cases, an exact match will be impossible.
Trimmed Versus Untrimmed Surfaces.
The trim curves do not define a surface -- they only mark which part of the surface is to be considered trimmed away.If you have a trim curve that runs diagonally across a surface, the trim curve itself doesn't have any real relationship to the You can remove the trim curves and get back to the underlying surface using the When you have a trimmed surface whose underlying surface is much larger than the outside trimming boundary, you can use the The Untrim command removes trim curves and surfaces joined at trim curves from a surface.Determines whether or not the original trimming objects and joined geometry are separated and retained or deleted.Removes all trimming curves on the edge of a trimmed surface, or if a hole edge is selected, all holes on the same face will be deleted.The RemoveEdge command retrims the selected trimmed surface edge with a line, extensions of the adjacent edges, or a curve.Determines whether or not the original trimming objects are retained.Replace the edge with a line between the edge end points.The edges must meet within surface boundary to give successful results.Edges will be replaced using the selected curve to retrim.The UntrimAll command untrims all trimming curves on an object, both edges and holes in one operation.The UntrimBorder command untrims the exterior border leaving holes trimmed.The UntrimHoles command untrims selected interior holes leaving exterior borders trimmed.The RemoveAllNakedMicroEdges command removes very small single naked edges; that is, edges that fold or loop back on themselves and have no matching edge to which they can be joined.Rhino for Mac © 2010-2017 Robert McNeel & Associates. Hi Adam- NURBS surfaces are always 4 sided, topologically, making some sort of … Can someone please tell me how to trim the surface again (or maybe in another way to divide the hexagon surface)?The reason this is happening is that when you “trim” a surface, the rest of it isn’t really gone exactly, it’s just disappeared.
Replies to This Discussion Permalink Reply by Hannes Löschke on June 8, 2012 at 10:40am.
I want to divide a curved hexagon surface into 5 by 5 pieces.
NURBS surfaces can be trimmed or untrimmed.
Do you know if there’s a plug-in to get the triangular construction lines?
Hi all, can someone help me to transform a trimmed surface into an untrimmed surface? Unfortunately, you can’t. Posted by Adam Bennett on November 30, 2012 at 5:07am in Support; View Discussions ; What is the difference and why should I worry about this?
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