ó m[c@`sŒdZddlmZmZmZmZddlZddlZddl m Z ddl Z de fd„ƒYZdefd„ƒYZdS( u' Mesh refinement for triangular grids. i(tabsolute_importtdivisiontprint_functiontunicode_literalsN(t Triangulationt TriRefinercB`seZdZd„ZRS(uó Abstract base class for classes implementing mesh refinement. A TriRefiner encapsulates a Triangulation object and provides tools for mesh refinement and interpolation. Derived classes must implements: - ``refine_triangulation(return_tri_index=False, **kwargs)`` , where the optional keyword arguments *kwargs* are defined in each TriRefiner concrete implementation, and which returns : - a refined triangulation - optionally (depending on *return_tri_index*), for each point of the refined triangulation: the index of the initial triangulation triangle to which it belongs. - ``refine_field(z, triinterpolator=None, **kwargs)`` , where: - *z* array of field values (to refine) defined at the base triangulation nodes - *triinterpolator* is a :class:`~matplotlib.tri.TriInterpolator` (optional) - the other optional keyword arguments *kwargs* are defined in each TriRefiner concrete implementation and which returns (as a tuple) a refined triangular mesh and the interpolated values of the field at the refined triangulation nodes. cC`s+t|tƒstdƒ‚n||_dS(NuExpected a Triangulation object(t isinstanceRt ValueErrort_triangulation(tselft triangulation((s7lib/python2.7/site-packages/matplotlib/tri/trirefine.pyt__init__-s(t__name__t __module__t__doc__R (((s7lib/python2.7/site-packages/matplotlib/tri/trirefine.pyRstUniformTriRefinercB`sGeZdZd„Zedd„Zddd„Zedd„ƒZ RS(uÚ Uniform mesh refinement by recursive subdivisions. Parameters ---------- triangulation : :class:`~matplotlib.tri.Triangulation` The encapsulated triangulation (to be refined) cC`stj||ƒdS(N(RR (R R ((s7lib/python2.7/site-packages/matplotlib/tri/trirefine.pyR Asic C`s_|j}|jjd}tj|dtjƒ}x,t|ƒD]}|j||ƒ\}}q>W|jjd}|j}|rWtj |dtjƒ } |jj } | dkrÕtj |dƒj ddƒ| |s"   %