Plotting data against a combination array

I have created a combination array of two vectors ranging from -60 to +60 with increments of 1. I am assigning the first column of the combination matrix to X and the second column to Y. I am then looping through every combination of this array, and using the X and Y values to output my Z value, so for every unique combination of X and Y, I have a unique value for Z. I have tried doing a 3D plot, but am running into issues with the X and Y parameters because they are not linear. Any help is greatly appreciated!

alpha = 0; 
L = 0.002;
W = 0.002; 
x = 0; 
y = 0;
h = 0.001;

thetaX_loop = -60:1:60;
thetaY_loop = -60:1:60;
combo = table2array(combinations(thetaX_loop,thetaY_loop));
Z = zeros(length(combo),4);

for i = 1:length(combo)
    X = combo(i,1);
    Y = combo(i,2);
    deltaX = tand(thetaX)*cosd(alpha)*h;
    deltaY = tand(thetaY)*cosd(alpha)*h;

    A1 = (W-x-deltaX)*(L-y-deltaY); 
    A2 = (W+x+deltaX)*(L-y-deltaY); 
    A3 = (W-x-deltaX)*(L+y+deltaY); 
    A4 = (W+x+deltaX)*(L+y+deltaY); 

    Em = cosd(thetaX)*cosd(thetaY);

    Z1 = A1*Em;
    Z2 = A2*Em;
    Z3 = A3*Em;
    Z4 = A4*Em;
    Z_tot = [Z1,Z2,Z3,Z4];
    Z(i,:) = Z_tot;

end

Answer 1

[Walter Roberson]

alpha = 0; 
L = 0.002;
W = 0.002; 
x = 0; 
y = 0;
h = 0.001;

thetaX_loop = -60:1:60;
thetaY_loop = -60:1:60;
[thetaX, thetaY] = ndgrid(thetaX_loop,thetaY_loop);

deltaX = tand(thetaX).*cosd(alpha)*h;
deltaY = tand(thetaY).*cosd(alpha)*h;

A1 = (W-x-deltaX).*(L-y-deltaY); 
A2 = (W+x+deltaX).*(L-y-deltaY); 
A3 = (W-x-deltaX).*(L+y+deltaY); 
A4 = -(W+x+deltaX).*(L+y+deltaY); 

Em = cosd(thetaX).*cosd(thetaY);

Z1 = A1.*Em;
Z2 = A2.*Em;
Z3 = A3.*Em;
Z4 = A4.*Em;
tiledlayout('flow');

nexttile(); surf(thetaX, thetaY, Z1, 'edgecolor', 'none'); colorbar(); title('Z1'); xlabel('{\theta}X'); ylabel('{\theta}Y');
nexttile(); surf(thetaX, thetaY, Z2, 'edgecolor', 'none'); colorbar(); title('Z2'); xlabel('{\theta}X'); ylabel('{\theta}Y');
nexttile(); surf(thetaX, thetaY, Z3, 'edgecolor', 'none'); colorbar(); title('Z3'); xlabel('{\theta}X'); ylabel('{\theta}Y');
nexttile(); surf(thetaX, thetaY, Z4, 'edgecolor', 'none'); colorbar(); title('Z4'); xlabel('{\theta}X'); ylabel('{\theta}Y');

[Raymond Elliott]

Thank you so much this is exactly what I was looking for! :)