MATLAB: Intersection of two triangles

intersectionMapping Toolboxpolygon

Hi,
I have 2 triangles and I would like to know if they are inside each others or they intersect. Like the picture How I can do that ? I read about polyxpoly but to be honest I don't understand how to use it in this scenario.

Best Answer

    % this define the vertexes (x,y) of first triangle
      trian1x =[ 0 0.5 1 0]; 
      trian1y =[ 0 1 0 0]; 
    % this define the vertexes (x,y) of second triangle  
      trian2x =[ 0 0.25 0.5 0]; 
      trian2y =[ 0 0.5 0 0]; 
    % (xi,yi) are the intersection points  
      [xi,yi] = polyxpoly(trian1x,trian1y,trian2x,trian2y,'unique');
      figure, 
      plot(trian1x,trian1y,'b')
      hold on 
      plot(trian2x,trian2y,'r')
      hold on 
      plot(xi,yi,'*g')
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