## "Fossies" - the Fresh Open Source Software Archive

### Member "dx-4.4.4/help/dxall215" (5 Feb 2002, 2187 Bytes) of package /linux/misc/old/dx-4.4.4.tar.gz:

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1 #!F-adobe-helvetica-medium-r-normal--18*
2 #!N
3 #!N #!Rtall215 Neighbors Component #!N #!N
4 #!N The "neighbors" component represents information about the neighbors of each
5 connection element. The number of items in this component must match
6 the number of items in the "connections" component. The number of
7 entries in each item must match the number of faces (for
8 3-D) or edges (for 2-D) in the connection element. For example,
9 each item in the "neighbors" component for triangle connections has three
10 entries, while each item in the "neighbors" component for tetrahedral connections
11 has four entries. #!N #!N For simplexes in #!F-adobe-times-medium-i-normal--18* n #!EF
12 dimensions (for example, triangles and tetrahedra), each item of the neighbors
13 Array consists of #!F-adobe-times-medium-i-normal--18* n+1 #!EF integer indices into the connections
14 Array identifying the #!F-adobe-times-medium-i-normal--18* n+1 #!EF neighbors of the simplex; the
15 #!F-adobe-times-medium-i-normal--18* i #!EF th of the #!F-adobe-times-medium-i-normal--18* n+1 #!EF indices corresponds
16 to the face opposite the #!F-adobe-times-medium-i-normal--18* i #!EF th vertex of
17 the simplex. For quads, cubes, and so on, each item of
18 the neighbors Array contains 2 #!F-adobe-times-medium-i-normal--18* n #!EF integer indices into
19 the connections Array identifying the 2 #!F-adobe-times-medium-i-normal--18* n #!EF neighbors of
20 the polyhedron. The pointers are in the order #!F-adobe-times-medium-i-normal--18* -x[1]+x[1]-x[2]+x[2] ...
21 -x[n]+x[n] #!EF , meaning that the first index points to the
22 neighbor in the #!F-adobe-times-medium-i-normal--18* -x[1] #!EF direction, the second to the
23 neighbor in the #!F-adobe-times-medium-i-normal--18* +x[1] #!EF direction, and so on, where
24 the #!F-adobe-times-medium-i-normal--18* x[n] #!EF dimension varies fastest in the representation of
25 the point indices in the interpolation element. Faces without neighbors are
26 indicated by an index of -1. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next
27 Topic #!EF #!N #!N #!Ltall217,dxall217 h Box Component #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N