How to set the shadow in the trimesh figure?

I am trying to display surface mesh of the brain in Matlab. I used the delaunayTriangulation object and trimesh function. I need to show the 3D effect with some shadow on the mesh. So I could get some specific point coordinates on it. How to set the shadows?

I want to get the effect like below, which is from Meshlab. It doesn't plot the edges.

My matlab codes and figure is as below.

trimesh(TR,'FaceColor',ones(3,1)*0.9,'LineStyle','none');
set(gca, 'color', 'k');

I don't have the shadow on the surface to show the 3D effect.

Thank you for any suggestions.

----------------------Edited 1st time-------------------

I test some codes with lighting. Even though I don't know how to give an uniform light from every direction. I made some progress. How many camlight could make an all-sided view with shadow.

trimesh(TR,'FaceColor',ones(3,1)*0.9,'LineStyle','none');
set(gca, 'color', 'k');
lighting gouraud;
a1 = camlight('right');
a2 = camlight('left');
a3 = camlight('headlight');