OCC 6.2 New Feature : Surfaces from Scattered points

jbn
Sun, 04/01/2007 - 13:07

Forums:

I tried to read about this new feature but I could not understand or find much information that explain what has been added here. So I have a number of question:
1- could anyone explain what has been added.
2- Is there any sample that explain this new feature.
3- As I know, there is a limitation in OCC regarding that and we can not interpolate among points to create surface but rather we can approximate. Is it now possible to interpolate between data points. Please highlight the methods.

Thanks in advance

Forum supervisor
Mon, 04/02/2007 - 11:26

Hello,

The Surface from Scattered Points is not a new feature of OCCT 6.2 but an advanced software component that is provided on a commercial basis. Please learn more about this component at http://www.opencascade.org/support/products/ssp/.

Best regards,
Forum supervisor

Francois Lauzon
Mon, 04/02/2007 - 20:31

Hello,
in reverse order, here are some answers ( I hope):

3 - There is 2 components that can interpolate unorganised points with a NURBS surface, GeomPlate (which is free) and SSP (which is not free). If you have below 2000-3000 points, GeomPlate could work for you, otherwise SSP could be use, it's faster and more powerfull and give better result. We use GeomPlate for a couple of years until we decided to switch to SSP.

2 - There is a sample for GeomPlate that come with OCC, for SSP, you have to ask Open Cascade.

1 - I haven't had the time to look at the new feature, but SSP as had some new features.

Good Luck,
Francois.

jbn
Mon, 04/02/2007 - 22:47

Thanks François for the answer. Also, regarding the free one, can I do he following:
1- interpolate (useing least square method is prefered) among points meaning that to force the surface to go through the data point becuase the sample use the approximation method only.

Thanks very much

Francois Lauzon
Tue, 04/03/2007 - 22:36

With the GeomPlate you can build a surface that go through the data points, but I don't know which algorithm is used (have a look at the source code in the Plate package).

Francois.

jbn
Wed, 04/04/2007 - 10:20

Thanks so much François. if anyone else know that please highlight the method can be used.