TDSTRI(3) Add triangles defining a simple surface to the triangles in a triangle

## SYNOPSIS

CALL TDSTRI (U, NU, V, NV, W, LW1D, RTRI, MTRI, NTRI, IRST)

## C-BINDING SYNOPSIS

#include <ncarg/ncargC.h>

void c_tdstri(float *u, int nu, float *v, int nv, float *w, int lw1d, float *rtri, int mtri, int *ntri, int irst)

## DESCRIPTION

The arguments of TDSTRI are as follows:
U
(an input array, of type REAL, dimensioned NU) - values of an independent variable "u". It must be the case that U(1) < U(2) < ... U(NU-1) < U(NU).
NU
(an input expression of type INTEGER) - the dimension of U.
V
(an input array, of type REAL, dimensioned NV) - values of an independent variable "v". It must be the case that V(1) < V(2) < ... V(NV-1) < V(NV).
NV
(an input expression of type INTEGER) - the dimension of V.
W
(an input array, of type REAL, dimensioned NU x NV and having FORTRAN first dimension LW1D) - values of a dependent variable "w(u,v)". The points (((U(I),V(J),W(I,J)),I=1,NU),J=1,NV) define a surface that one wishes to draw.
LW1D
(an input expression of type INTEGER) - the FORTRAN first dimension of the array W. It must be the case that LW1D is greater than or equal to NU.
RTRI
(an input array, of type REAL, dimensioned 10 x MTRI) - a list of triangles, probably created by means of calls to TDSTRI, TDITRI, and/or TDMTRI, and sorted, probably by means of a call to TDOTRI.
MTRI
(an input expression of type INTEGER) - the second dimension of RTRI and thus the maximum number of triangles the triangle list will hold.
NTRI
(an input/output variable of type INTEGER) - keeps track of the number of triangles currently in the list. It is the user's responsibility to zero this initially and its value is increased by each call to a triangle-generating routine like TDSTRI. If NTRI becomes equal to MTRI, TDSTRI does not take an error exit; instead, it just stops generating triangles. Therefore, it's a good idea, after calling TDSTRI, to check the value of NTRI against the dimension MTRI; if they're equal, it probably means that the triangle list filled up and that the rendered surface will be incomplete.
IRST
(an input expression of type INTEGER) - specifies the index of the rendering style to to be used for the triangles added to the triangle list by this call.

## C-BINDING DESCRIPTION

The C-binding argument descriptions are the same as the FORTRAN argument descriptions.

## ACCESS

To use TDSTRI or c_tdstri, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.