问如何在MATLAB中识别多个相交多边形？

EN

% Set up empty vector to hold the different shapes
polyvec = [];

% Loop all shapes and combine into polyshape vector
for ii = 1 : size(shapes, 1)

    poly = polyshape(shapes{ii,2}(:,1), shapes{ii,2}(:,2));

    % When you combine polyshape objects together the you get 
    % a vector that is of the polyshape object type
    polyvec = [polyvec, poly];

end

% Use the overlap function to compute a symmetric binary matrix 
% of which polygons in the polygon vector overlap. 
interMatSym = overlaps(polyvec);

% I only need the upper triangle of the symmetric interaction 
% matrix and all polygons overlap with themselves so use 'triu'
interMat = triu(overlaps(polyvec), 1);

% Find the coordinates of the overlap in the interaction matrix
[x, y] = find(interMat);

% Save the result
result = [shapes(x,1), shapes(y,1)];

result =
  2×2 cell array
    {'poly1'}    {'poly2'}
    {'poly2'}    {'poly4'}