Hey. The reason why the two polyshape objects pi and p are not considered equal when using the isequal function is because the isequal function checks for exact equality, including the internal representation of the objects. Even though the vertex data and other non-hidden properties may appear the same, the internal representation of the polyshape objects may differ.
When you intersect a polyshape with itself using the intersect function, it creates a new polyshape object that represents the intersection. In this case, the intersection of p with itself results in a new polyshape object that is considered equal to pi when using the isequal function.
The internal representation of polyshape objects includes additional information such as the connectivity of the vertices, which may differ even if the vertex data is the same.
If you want to check if two polyshape objects have the same shape, you can use the isvalid function to check if they are valid polyshapes, and then compare their vertex data using the isequal function.
isEqualVertices = isequal(pi.Vertices, p.Vertices);
