TriRep class -

Triangulation representation

Description

TriRep provides topological and geometric queries for triangulations in 2-D and 3-D space. For example, for triangular meshes you can query triangles attached to a vertex, triangles that share an edge, neighbor information, circumcenters, or other features. You can create a TriRep directly using existing triangulation data. Alternatively, you can create a Delaunay triangulation, via DelaunayTri, which provides access to the TriRep functionality.

Construction

Methods

Properties

Copy Semantics

Value. To learn how this affects your use of the class, see Comparing Handle and Value Classes in the MATLAB Object-Oriented Programming documentation.

Indexing

TriRep objects support indexing into the triangulation using parentheses (). The syntax is the same as for arrays.

Examples

Load a 2-D triangulation and use the TriRep constructor to build an array of the free boundary edges:

 load trimesh2d

This loads triangulation tri and vertex coordinates x, y:

trep = TriRep(tri, x,y);
fe = freeBoundary(trep)';
triplot(trep);

You can add the free edges fe to the plot:

hold on;
plot(x(fe), y(fe), 'r','LineWidth',2);
hold off;
axis([-50 350 -50 350]);
axis equal;

See Also

DelaunayTri | TriScatteredInterp

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