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分享classdef topo < handle
% topo is a subclass of handle
properties
FigHandle % Store figure handle
FofXY % function handle
Lm = [-2*pi 2*pi]; % Initial limits
end % properties
properties (Dependent, SetAccess = private)
Data
end % properties Dependent = true, SetAccess = private
methods
function obj = topo(fnc,limits)
% Constructor assigns property values
obj.FofXY = fnc;
obj.Lm = limits;
end % topo
function set.Lm(obj,lim)
% Lm property set function
if ~(lim(1) < lim(2))
error('Limits must be monotonically increasing')
else
obj.Lm = lim;
end
end % set.Lm
function data = get.Data(obj)
% get function calculates Data
% Use class name to call static method
[x,y] = topo.grid(obj.Lm);
matrix = obj.FofXY(x,y);
data.X = x;
data.Y = y;
data.Matrix = matrix;% Return value of property
end % get.Data
function surflight(obj)
% Graph function as surface
obj.FigHandle = figure;
surfc(obj.Data.X,obj.Data.Y,obj.Data.Matrix,...
'FaceColor',[.8 .8 0],'EdgeColor',[0 .2 0],...
'FaceLighting','phong');
camlight left; material shiny; grid off
colormap copper
end % surflight method
function delete(obj)
% Delete the figure
h = obj.FigHandle;
if ishandle(h)
delete(h);
else
return
end
end % delete
end % methods
methods (Static = true) % Define static method
function [x,y] = grid(lim)
inc = (lim(2)-lim(1))/35;
[x,y] = meshgrid(lim(1):inc:lim(2));
end % grid
end % methods Static = true
end % topo class