asymptote: smoothcontour3
8.38 'smoothcontour3'
=====================
This module, written by Charles Staats, draws implicitly defined
surfaces with smooth appearance. The purpose of this module is similar
to that of 'contour3': given a real-valued function f(x,y,z), construct
the surface described by the equation f(x,y,z) = 0. The
'smoothcontour3' module generally produces nicer results than
'contour3', but takes longer to compile. Additionally, the algorithm
assumes that the function and the surface are both smooth; if they are
not, then 'contour3' may be a better choice.
To construct the null surface of a function 'f(triple)' or
'ff(real,real,real)' over 'box(a,b)', use the routine
surface implicitsurface(real f(triple)=null,
real ff(real,real,real)=null,
triple a,
triple b,
int n=nmesh,
bool keyword overlapedges=false,
int keyword nx=n,
int keyword ny=n,
int keyword nz=n,
int keyword maxdepth=8,
bool usetriangles=true);
The optional parameter 'overlapedges' attempts to compensate for an
artifact that can cause the renderer to "see through" the boundary
between patches. Although it defaults to 'false', it should usually be
set to 'true'. The example 'genustwo.asy' illustrates the use of this
function. Additional examples, together with a more in-depth
explanation of the module's usage and pitfalls, are available at
<https://github.com/charlesstaats/smoothcontour3>.
Info Catalog
asymptote: contour3
asymptote: Base modules
asymptote: slopefield