I have a SW surfacing question for the SW gurus
It seems the continuous option SW offers for the various surface types is not really continuous or perhaps there is a problem with the porcupine curvature display?
I attached a simple surface model to show this.
I created a simple lofted surface with compound surface. I cut square hole thru this surface. I created surfaces to fill the hole using each surface tool SW offers for doing such things .....fillled surface, boundry surface, and lofted surface. I created an intersection curve thru the center of these filling surfaces and turned on the curvature display for each. The curvature display indicates that the surfaces are not curvature continuous.
Is this really the case or I am I missing something?
Cheers
sw 2008 sp5
It seems the continuous option SW offers for the various surface types is not really continuous or perhaps there is a problem with the porcupine curvature display?
I attached a simple surface model to show this.
I created a simple lofted surface with compound surface. I cut square hole thru this surface. I created surfaces to fill the hole using each surface tool SW offers for doing such things .....fillled surface, boundry surface, and lofted surface. I created an intersection curve thru the center of these filling surfaces and turned on the curvature display for each. The curvature display indicates that the surfaces are not curvature continuous.
Is this really the case or I am I missing something?
Cheers
sw 2008 sp5
Great question. To measure continuity, I don't think we have great tools. The Deviation Analysis helps you measure tangency, and I think your continuity test has to use deviation analysis, because its possible that surfaces could have the same curvature value at a shared edge, but be tangent to different directions.
One problem with your test. I'm not completely sure that two different splines are going to use the same curvature scale. I'm not sure it won't either. Another tool that you could use to test this is to make the splines individually, and click on the last point of the spline and look at the propertymgr values. It should show you numerically what the curvature or radius is. You'll have to create the splines independently to avoid sharing that point.
Where you place the line might have something to do with it too. I've done the same test, and surfaces tend to fail in the corners. This is why I recommend making patches like that with spline loops, no sharp corners.
Another test you could use would be to knit the test face into the rest of the body and turn on the Curvature display (View, Display, Curvature). If the color does not change abruptly over the edge, you're good.
If you zip the SW part you will be able to upload it. Very interesting that on a SW forum you cannot upload SW parts directly.