Single Span Surfaces

[The Rain Knight]

well, actually the construction process is not the same, so result is not the same.
in ast the boundary condition (position or curvature) are taken into account when building the surface
in rhino by using match after the construction, you modify the surface for one edge at a time - maybe depending on the order of matching, you won't necessarely get the same thing...hmmm

can you share your files (in native wire and 3dm format) ?

thx

[uranium]

Sure, i will share the files... I will enclose 3dm, wire and obj files in the Rar file...

[uranium]

It should also be noted that the curves were drawn completely in rhino...i exported the curves from rhino to AST through OBJ format. I have enclosed all the files. Please let me know if it doesnt work...

[oxydo]

I am geting this result with zebra ...look wery the same ? or I dont see good

I am noticed that in Rhino your seting in file in render mesh quality wose on :
Jagged & faster maybe bicoz of that your zebra showed wrong analyze ?

[The Rain Knight]

well i didn't think of that mesh quality issu...true that rhino one is often low by default compared to defaut AST one....

uranium, can you check on your side ? (i didn't opened the file yet cos i'm @work )

[uranium]

No. Its not a mesh issue. @Oxydo : i get the same result too...

The Zebra which i posted previously was of the surfaces created by Network surface Command.

The model which i shared with u has surfaces done using Edge surface Command.

Even though the edge surface command produces a much more desirable Zebra map, we can still see the bumps on the surfaces....(hope i am right ?)

[uranium]

Anyone checked it ? i am still trying to figure it out...:banghead:

[The Rain Knight]

uranium, surfaces are fine for me both in ast and Rhino.

so the problem is that network and edge command doesn't give the same result right ? then use edge command at all times.

[petter]

@uranium
well, i'm really glad that i pushed your feelings about nurbs with my gtr thread even if i'm myself a begginer in the "art" of AST.
Glad that you got the point of single span surfaces but always remember, good curves give good surfaces so pay attention to that. You'll get the point while practicing and practicing. I did surfaces of dozen times, it's becoming verry pissing off but in the end you get the much expected satisfaction

And as many others i have some problems with some surface creation. Maybe some of the elders in the art of AST may help me somehow:

Link to the problem:
http://www.cg-cars.com/forum/showthr...9557#post99557

[uranium]

Thanks to everyone for your constant motivation and quick response to my queries...


In rhino when using match surface, how to prevent the already matched edge of the surface from moving while matching the adjacent edge with another surface ?

For Eg, look at the attachment below...there are 4 surfaces ( diff. colours) and the curves (white Lines ). The curves are all continuous and the surfaces were created using edge surf command. now, i want the surfaces to be curvature continuous with each other, like the curves. so how to match them now ?

[oxydo]

I did not try that last one but abaot your GTR try to make ather surfaces with one spane like this example on pic

[uranium]

@ oxydo : I am trying my best to keep the surfaces single span...