Embossed Ribbon Edge Color MATLAB

Question

In a streamribbon graphic, how do you draw the edges of the tape itself, as opposed to the edges of each face?

For instance:

figure
load wind
[sx sy sz] = meshgrid(80,20:10:50,0:5:15);
h = streamribbon(x,y,z,u,v,w,sx,sy,sz);
axis tight
shading interp;
view(3);
camlight
lighting gouraud

It produces:

If I add set(h,'edgecolor','k')

I get:

While what I'm looking for is something like this (the top and left sides of the image were edited with gimp to understand what I'm chasing):

Answer 1

As stated in the commentary, there is no easy way to illuminate some edges of the tape surfaces, not others.

, , ( ), . , .

, handles , , , plot3. , :

, , ( h), :

hs = StreamEdges( h , 'k','Linewidth',1 ) ;

:

, :

set(hs,'LineWidth',1,'Color','c')
%// or
set(hs,'LineWidth',2,'Color','r','Marker','none')

---

StreamEdges.m:

function hs = StreamEdges(hribbon,varargin)

wasOnHold = ishold ;            %// save hold state
hold on

hs = zeros( size(hribbon) ) ;   %// initialize output handle array
for ih=1:numel( hribbon ) ;
    %// retrieve X, Y, and Z data of each surface
    hsurf = handle( hribbon(ih)) ;  %// for pre-HG2 (2014a) versions
    xx = hsurf.XData ;
    yy = hsurf.YData ;
    zz = hsurf.ZData ;

    %// reoder coordinates to linearise surface profile (edge)
    xx = [xx(:,1) ; flipud(xx(:,2)) ; xx(1)] ;
    yy = [yy(:,1) ; flipud(yy(:,2)) ; yy(1)] ;
    zz = [zz(:,1) ; flipud(zz(:,2)) ; zz(1)] ;

    %// return double to stay compatible with pre-HG2
    hs(ih) = double( plot3(xx(:),yy(:),zz(:), varargin{:} ) ) ;
end

if ~wasOnHold ; hold off ; end      %// restore hold state
hs = handle(hs) ;                   %// convert "double" handle back to HG2 handles

---

pre-HG2 (= pre 2014b) post-HG2. , , HG2 (= , double). pre-HG2. , (, , hs = double(hs))

---

axes

hold, , axes (gca) , .
, axes , :

hs = StreamEdges( h , 'Parent','target_axes_handle' , 'Color','k','Linewidth',1) ;