1TDGTRS(3NCARG) NCAR GRAPHICS TDGTRS(3NCARG)
2
6 TDGTRS - Get the values defining a selected rendering style, which
7 affects the appearance of triangles drawn by a call to the routine
8 TDDTRI.
9
11 CALL TDGTRS (IRST, IFC1, IFC2, IFC3, IFC4, ILC1, ILC2, ILTD, USTP,
12 VSTP, WSTP)
13
15 #include <ncarg/ncargC.h>
16 void c_tdgtrs(int irst, int *ifc1, int *ifc2, int *ifc3, int *ifc4, int
18 *ilc1, int *ilc2, int *iltd, float *ustp, float *vstp, float *wstp)
19
21 The arguments of TDGTRS are as follows:
22 IRST (an input expression of type INTEGER) - the index of the
24 particular rendering style which is to be retrieved.
25 IFC1 and IFC2
27 (input expressions of type INTEGER) - color indices specifying
28 a range of colors to be used for the "bottom" side of a surface
29 (where function values are less than the value on the surface).
30 If IFC1 is negative, filling of triangles seen from the
31 "bottom" is turned off. If IFC1 is zero or greater, but IFC2 is
32 less than or equal to it, the color with index IFC1 is used. If
33 IFC1 is zero or greater and IFC2 is greater than IFC1, then a
34 range of color indices is specified; colors near the beginning
35 of that range are used for triangles that are nearly
36 perpendicular to the line of sight, while colors near the end
37 of that range are used for triangles more nearly parallel to
38 the line of sight. (Normally, one should make triangles
39 perpendicular to the line of sight lighter than those parallel
40 to the line of sight.)
41 IFC3 and IFC4
43 (input expressions of type INTEGER) - color indices specifying
44 a range of colors to be used for the "top" side of a surface
45 (where function values are greater than the value on the
46 surface). If IFC3 is negative, filling of triangles seen from
47 the "top" is turned off. If IFC3 is zero or greater, but IFC4
48 is less than or equal to it, the color with index IFC3 is used.
49 If IFC3 is zero or greater and IFC4 is greater than IFC3, then
50 a range of color indices is specified; colors near the
51 beginning of that range are used for triangles that are nearly
52 perpendicular to the line of sight, while colors near the end
53 of that range are used for triangles more nearly parallel to
54 the line of sight. (Normally, one should make triangles
55 perpendicular to the line of sight lighter than those parallel
56 to the line of sight.)
57 ILC1 (an input expression of type INTEGER) - the color index
59 specifying a color to be used for lines drawn on the "bottom"
60 side of a surface. If ILC1 is negative, the drawing of these
61 lines is turned off.
62 ILC2 (an input expression of type INTEGER) - the color index
64 specifying a color to be used for lines drawn on the "top" side
65 of a surface. If ILC2 is negative, the drawing of these lines
66 is turned off.
67 ILTD (an input expression of type INTEGER) - a flag, which, if set
69 non-zero, turns on the drawing of the edges of the individual
70 triangles into which surfaces have been decomposed.
71 USTP, VSTP, and WSTP
73 (input expressions of type REAL) - the distances between slices
74 in the U, V, and W directions, respectively. If a given value
75 is zero, the associated slice lines are not drawn.
76
78 The C-binding argument descriptions are the same as the FORTRAN
79 argument descriptions.
80
82 To use TDGTRS or c_tdgtrs, load the NCAR Graphics libraries ncarg,
83 ncarg_gks, and ncarg_c, preferably in that order.
84
86 Online: tdclrs, tdctri, tddtri, tdgeti, tdgetr, tdgrds, tdgrid, tdinit,
87 tditri, tdlbla, tdlbls, tdline, tdlnpa, tdmtri, tdotri, tdpack,
88 tdpack_params, tdpara, tdplch, tdprpa, tdprpi, tdprpt, tdseti, tdsetr,
89 tdsort, tdstri, tdstrs
90
92 Copyright (C) 1987-2007
93 University Corporation for Atmospheric Research
94 This documentation is free software; you can redistribute it and/or
96 modify it under the terms of the GNU General Public License as
97 published by the Free Software Foundation; either version 2 of the
98 License, or (at your option) any later version.
99 This software is distributed in the hope that it will be useful, but
101 WITHOUT ANY WARRANTY; without even the implied warranty of
102 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
103 General Public License for more details.
104 You should have received a copy of the GNU General Public License along
106 with this software; if not, write to the Free Software Foundation,
107 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
108UNIX July 1997 TDGTRS(3NCARG)