ó ±éRc@sTddlmZddljZddljZddlZdefd„ƒYZ dS(iÿÿÿÿ(tprint_functionNt TriangulationcBsweZdZd d d„Zd„Zed„ƒZd„Zd„Z e d„ƒZ d„Z ed„ƒZ d „ZRS( sd An unstructured triangular grid consisting of npoints points and ntri triangles. The triangles can either be specified by the user or automatically generated using a Delaunay triangulation. Read-only attributes: *x*: array of shape (npoints). x-coordinates of grid points. *y*: array of shape (npoints). y-coordinates of grid points. *triangles*: integer array of shape (ntri,3). For each triangle, the indices of the three points that make up the triangle, ordered in an anticlockwise manner. *mask*: optional boolean array of shape (ntri). Which triangles are masked out. *edges*: integer array of shape (?,2). All edges of non-masked triangles. Each edge is the start point index and end point index. Each edge (start,end and end,start) appears only once. *neighbors*: integer array of shape (ntri,3). For each triangle, the indices of the three triangles that share the same edges, or -1 if there is no such neighboring triangle. neighbors[i,j] is the triangle that is the neighbor to the edge from point index triangles[i,j] to point index triangles[i,(j+1)%3]. For a Triangulation to be valid it must not have duplicate points, triangles formed from colinear points, or overlapping triangles. cCsttj|dtjƒ|_tj|dtjƒ|_|jj|jjksft|jjƒdkrutdƒ‚nd|_ d|_ d|_ |dkrJt j |j|jƒ}tj|j|jƒdtjƒ|_|dkrítj|j|jƒdtjƒ|_ tj|jdtjƒ}tj|dddƒ|_ qín£tj|dtjƒ|_|jjdks|jjddkrœtdƒ‚n|jjƒt|jƒkrÉtdƒ‚n|jjƒd krítd ƒ‚n|dk r^tj|dtjƒ|_ t|j jƒdksL|j jd |jjd kr^td ƒ‚q^nd|_d|_dS( Ntdtypeis'x and y must be equal-length 1-D arraystaxisiistriangles must be a (?,3) arrays&triangles max element is out of boundsis&triangles min element is out of boundss3mask array must have same length as triangles array(tnptasarraytfloat64txtytshapetlent ValueErrortNonetmaskt_edgest _neighborstdelaunayRtto_client_point_indicesttriangle_nodestint32t trianglestedge_dbttriangle_neighborstrolltarraytndimtmaxtmintboolt_cpp_triangulationt _trifinder(tselfRRRR tdtt neighbors((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyt__init__+s@0     !(   cCs|jƒj|ƒS(sb Calculate plane equation coefficients for all unmasked triangles from the point (x,y) coordinates and specified z-array of shape (npoints). Returned array has shape (npoints,3) and allows z-value at (x,y) position in triangle tri to be calculated using z = array[tri,0]*x + array[tri,1]*y + array[tri,2]. (tget_cpp_triangulationtcalculate_plane_coefficients(Rtz((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyR$[scCs.|jdkr'|jƒjƒ|_n|jS(N(RR R#t get_edges(R((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pytedgesescCsL|jdkrEtj|j|j|j|j|j|j ƒ|_n|jS(N( RR t_triRRRRR RR(R((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyR#ks cCs7|jdk r,|jjd|jddƒS|jSdS(sC Return an array of triangles that are not masked. iRiN(R R Rtcompress(R((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pytget_masked_trianglestscOs`t|dtƒr*|d}|d}n)|d}|d}|d}|jddƒ}t}|dkr‘t|ƒdkr‘|d}t}n|dk rÖytj|dtj ƒ}WqÖt k rÒd}qÖXn|dk r |j dks|j ddkr d}n|dk r,|r,|d}n|jddƒ}t||||ƒ}|||fS( sÎ Return a Triangulation object from the args and kwargs, and the remaining args and kwargs with the consumed values removed. There are two alternatives: either the first argument is a Triangulation object, in which case it is returned, or the args and kwargs are sufficient to create a new Triangulation to return. In the latter case, see Triangulation.__init__ for the possible args and kwargs. iiiRRiR N( t isinstanceRtpopR tFalseR tTrueRRRR RR (targstkwargst triangulationRRRt from_argsR ((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pytget_from_args_and_kwargs}s0             cCs8|jdkr1ddlm}||ƒ|_n|jS(sà Return the default :class:`matplotlib.tri.TriFinder` of this triangulation, creating it if necessary. This allows the same TriFinder object to be easily shared. iÿÿÿÿ(tTrapezoidMapTriFinderN(RR tmatplotlib.tri.trifinderR4(RR4((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyt get_trifinder«scCs.|jdkr'|jƒjƒ|_n|jS(N(RR R#t get_neighbors(R((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyR!·scCsÔ|dkrd|_nbtj|dtjƒ|_t|jjƒdksk|jjd|jjdkrztdƒ‚n|j dk rŸ|j j |jƒnd|_ d|_ |j dk rÐ|j jƒndS(sp Set or clear the mask array. This is either None, or a boolean array of shape (ntri). Riis3mask array must have same length as triangles arrayN(R R RRRR R RR Rtset_maskRRRt _initialize(RR ((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyR8½s     N(t__name__t __module__t__doc__R R"R$tpropertyR'R#R*t staticmethodR3R6R!R8(((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyRs#0  . ( t __future__Rtmatplotlib.delaunayRtmatplotlib._triR(tnumpyRtobjectR(((sV/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/tri/triangulation.pyts