Linear interpolation inside triangles

This method uses the triangulation of Delone, calculated by reference points. At a stage of filling a matrix the value of a matrix element is defined by linear interpolation by three points of a triangle, into which this element has got.

So as over the limit of points location it is impossible to define value of the characteristic, the area of constructing a matrix is limited to a convex polygon that is contoured the area of points location.

Advantages of the method:

- fast processing;

- there is no need of customizing the parameters of points selection for construction of a local surface.

Disadvantages of the method:

- additional expenses of memory for storage of triangles file;

- breaks of surface on edges of triangles.