Detect shape superposition ?

Hello, Is there a way to detect shape superposition in matlab ? I succeed drawing the shapes with "patch" and now i was wondering if there is any way to get the superposition shape as an output. Many thanks Kevin

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

Answer 1

[Walter Roberson]

inpolygon() might help.

Or from the FEX, http://www.mathworks.com/matlabcentral/fileexchange/18173-polygonintersection

There is polyxpolyy from the mapping toolbox.