The problem is that when you do
cat(3, allObjects.getPoints)
%or
{allObjects.getPoints}
you're only asking for one output. So, only the first cell of varargout is going to be used.
You could work around this, by assigning the output of your getPoints function to a cell array of the right size, like so:
c = cell(1, numel(allObjects));
[c{:}] = allObjects.GetPoints;
cat(3, c{:})
The other option is to change GetPoints to always have a single output:
function points = GetPoints(self)
%points is a cell array if self is an array, a matrix otherwise
if numel(self)
points = arrayfun(@(s) s.GetPoints, self, 'UniformOutput', false);
%or use your loop
else
%computation
end
end
In which case, the code on the receiving side is simply:
points = allObjects.GetPoints;
cat(3, points{:})
