function defaultlighting
% illuminate with default lighting
% After rotating plot with the mouse you need to use "defaultlighting" again
% to rotate the lights to the new camera position
%
% use "lighting none" for mode without simulated lights

hl = findobj(gca,'Type','light');
delete(hl);                        % delete all existing lights
camlight(30,30,'local');           % add two lights
camlight(-30,70,'infinite');
material([.3 .65 .7 14 1])
lighting phong

