Curves workbench
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Re: Curves workbench
...the airfoil2hull-blend works, if you only draw halfprofiles.
If the wireframe is twistet, one of the profiles (bsplines) must be drawn from the trailingedge first.
I was confronted with some "sensibilities" in drawing clockwise or counterclockwise ....
Edit: meanwhile I have found in "Blend_Surface" -Data-tab a line "Untwist"
Is that the riddles clue?
If the wireframe is twistet, one of the profiles (bsplines) must be drawn from the trailingedge first.
I was confronted with some "sensibilities" in drawing clockwise or counterclockwise ....
Edit: meanwhile I have found in "Blend_Surface" -Data-tab a line "Untwist"
Is that the riddles clue?
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- Airfoilblend.FCStd
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Re: Curves workbench
Indeed, it works better on half profiles.
So I switched to workarounds.
The use of a Ruled_surface as input for the sweep2Rails tool is a way to be sure to get the rails correctly oriented.
IMHO, in OpenCascade, edge orientation is quite a pain to deal with ...
So I switched to workarounds.
The use of a Ruled_surface as input for the sweep2Rails tool is a way to be sure to get the rails correctly oriented.
This "untwist" property is another way to deal with the problem ...
Re: Curves workbench
Hi Chris,
i just found out by accident that found out by accident that the Comb tool works on Surfaces, not just curves. this is really awesome! i have a little problem though. With curve, i can match the scales and the combs will 'click' together when the curve is G2. with the surfaces, even setting the scales equal doesn't line them up patch to patch. Would you consider making the scale absolute instead of relative to object size? (just a guess)
the fact that the surfaces return the curvature in the surface normal plane makes those combs much more informative for surface diagnostic, and the U/V multi iso is just...wow! can we get U+V as an option too?
curves matching when the scale matches surfaces cannot be made to match (in a simple way)
i just found out by accident that found out by accident that the Comb tool works on Surfaces, not just curves. this is really awesome! i have a little problem though. With curve, i can match the scales and the combs will 'click' together when the curve is G2. with the surfaces, even setting the scales equal doesn't line them up patch to patch. Would you consider making the scale absolute instead of relative to object size? (just a guess)
the fact that the surfaces return the curvature in the surface normal plane makes those combs much more informative for surface diagnostic, and the U/V multi iso is just...wow! can we get U+V as an option too?
curves matching when the scale matches surfaces cannot be made to match (in a simple way)
Re: Curves workbench
And thanks again for the Zebra! that thing is sick. and dangerously hypnotic.
Sure enough, Zebra finds the flaws. Getting close though.
Sure enough, Zebra finds the flaws. Getting close though.
Re: Curves workbench
muhahahahahaha! 100 combs per surface! full curvature mapping! so...much...power
Re: Curves workbench
last post i swear...but i really love these tools.
double combs for UV overlay and manual scale mapping to connect the combs patch to patch.
double combs for UV overlay and manual scale mapping to connect the combs patch to patch.
- microelly2
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Re: Curves workbench
Hi Edward,emills2 wrote: ↑Thu Jul 27, 2017 6:02 am Hi Chris,
i just found out by accident that found out by accident that the Comb tool works on Surfaces, not just curves. this is really awesome! i have a little problem though. With curve, i can match the scales and the combs will 'click' together when the curve is G2. with the surfaces, even setting the scales equal doesn't line them up patch to patch. Would you consider making the scale absolute instead of relative to object size? (just a guess)
the fact that the surfaces return the curvature in the surface normal plane makes those combs much more informative for surface diagnostic, and the U/V multi iso is just...wow! can we get U+V as an option too?
The comb plot tool DOESN'T WORK on surfaces for now.
I tried to implement this, but didn't finished the job.
The curvature values that are computed for surfaces are probably wrong, they are the curvatures of the iso-curves, not the surface curvatures.
Maybe I'll try to rework this, but I am not sure to understand all these curvature things ( principal, mean, gaussian, geodesic, etc ... I get confused ).
Re: Curves workbench
damn! are you sure? they look like curvatures of the iso along the surface normal. a curve comb would dance up and down wildly like my first picture above.
i guess i have to take your word for it....but i'm still going to use them anyway! they look meaningful to me and they react the way i expected them to. except the scale part.
i guess i have to take your word for it....but i'm still going to use them anyway! they look meaningful to me and they react the way i expected them to. except the scale part.