How can I rotate a body inside mesh?

Hi all, I have the following case where I am interested to rotate a particular section(See attached image for detailed view) in a mesh either clockwise or anticlockwise direction. I want it to rotate in a cell by cell manner. Thank you all for your time.

Please view below code:

clear all
clc
X=linspace(0,1,200);
Y=linspace(0,1,200);
u=zeros(1,200,200);
u(:,95:100,70:150)=NaN;
surf(X,Y,squeeze(u));
grid off
view(90,90);
axis square