How to plot implicit function with 3 variables?

Hello, I want to plot function 'cos(x)+cos(y)+cos(z) + sin(x) + sin(y) + sin(z) -10 = 0' ; range of x,y,z=[-10,10]. How to plot this in Matlab? I tried surf command but it says that this command needs matrix. Please help me. Thanks.

Answer 1

[Thorsten]

 http://www.mathworks.com/matlabcentral/fileexchange/23623-ezimplot3-implicit-3d-functions-plotter