finer mesh implicit in draw3d?



El vie, 27-05-2011 a las 10:19 -0400, Sheldon Newhouse escribi?:
> Hello,
>   How can one decrease the mesh size in the implicit function for draw3d?
> 
> For instance, the expression
> 
>   draw3d(implicit(x^2 + y^2-1,x,-2,2,y,-2,2,z,-2,2))$
> 
> produces a vertical cylinder with a certain number of triangles in its 
> boundary.  I would like to make the triangles smaller; i.e. increase the 
> number of triangles.


Hello,

See info for x_voxel, y_voxel and z_voxel.

You can find an example here:

http://riotorto.users.sourceforge.net/gnuplot/implic


By the way, this is one of the graphic objects ported to the VTK
renderer:

http://riotorto.users.sourceforge.net/vtk/implicit

--
Mario