Bezier Surface

Hello Marc,

It's not clear in your question that you are having problem in surface convertion or surface creation.

If it's of convertion(BSpl.->Bez. Surf.):-
Better use the GeomConvert_BSplineSurfaceToBezierSurface(....), as it's straight forward.

But if it's of Creation:-
Use "GeomAPI_PointsToBSplineSurface".{As per ur requirement}

Just play with knot values,mulptiplicity....to have desired result.

If still your problem sustains,Pls. refer to Tech. Documentation.

Thanx.
Commenter-1 Mukherjee

Hello and thank you very much for your help:
The problem is the surface creation !

Any hints ?
Can I use the standard GeomAPI_PointsToBSplineSurface to create a Bezier Surface ?
How ? I do not want to play with knots etc.
I just want to receive a bezir surface just like creating a BSplineSurface.

Thank you.

Commenter-2

Hello and thank you very much for your help:
The problem is the surface creation !

Any hints ?
Can I use the standard GeomAPI_PointsToBSplineSurface to create a Bezier Surface ?
How ? I do not want to play with knots etc.
I just want to receive a bezir surface just like creating a BSplineSurface.

Thank you.

Commenter-2

Hi marc,

I'm giving u the simplest code of Bezier Surface creation. Here you just specify the pole points(similar to the way in PointsTOBSpline...) and get a Bezier Surface. And this time u don't need to play with anything :-)

Code :
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//include related headers
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TColgp_Arry2OfPnt poles(1,2,1,2);

poles(1,1).setCoord(x,y,z);//it's on you how would you like to populate x,y & z.
poles(1,2).setCoord(x,y,z);
poles(2,1).setCoord(x,y,z);
poles(2,2).setCoord(x,y,z);

Handle(Geom_BezierSurface) BEZ = new Geom_BezierSurface(poles);

//Now you have a Bezier Surf. in straight forward way.

If you still have problm. Pls. go through the Documentation.

Thankyou
Commenter-1

Try to use the constrcutor in Geom_BezierSurface class.

- pg