contour plot of a 3D Solid Object

I imported the .stl file like this

fv = stlread('EXAMPLE.stl');                        
patch(fv,'FaceColor',       [0.8 0.8 1.0], ...
         'EdgeColor',       'none',        ...
         'FaceLighting',    'gouraud',     ...
         'AmbientStrength', 0.15);
grid off  
hold on 
axis equal

But I can't create the outline of the solid object. Anyone know how I can do?

For example the sphere in the figure

Answer 1

[Shadaab Siddiqie]

You can create outlines only on the edges not on a curved surface. For more information refer STL File Import.

[Alberto Acri]

The surface is characterized by a triangular mesh. Is it possible to see it in the figure?

[Shadaab Siddiqie]

Not form my understanding.