Thu, 07/07/2005 - 20:42
Forums:
Hello to all,
how to generate a Bezier Surface ?
I have a BSPline_Surface and want to better use a BezierSPline form the data. Shall I use GeomConvert to turn the BSplineSurface into a Bezier one, or is there a straightforward way of doing it - like the createion of BSplineSurface via Interpolation etc ?
Best regards
Marc
Fri, 07/08/2005 - 14:53
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.
Pavitra Mukherjee
Fri, 07/08/2005 - 15:15
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.
Marc
Fri, 07/08/2005 - 15:15
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.
Marc
Mon, 07/11/2005 - 11:54
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
Pavitra
Mon, 07/11/2005 - 12:12
Try to use the constrcutor in Geom_BezierSurface class.
- pg