# HG changeset patch
# User Ben Abbott  <bpabbott@mac.com>
# Date 1324568442 18000
# Node ID 595ee644fa6fa99181a58405045af62453d408e2
# Parent  050bc580cb60ededa338d86de5f88763687db1ca
Fix trisurf for gnuplot, bug # 35144.

* __go_draw_axes__.m: For 3D triangular patches, when isempty(cdata) use zdata.

diff -r 050bc580cb60 -r 595ee644fa6f scripts/plot/private/__go_draw_axes__.m
--- a/scripts/plot/private/__go_draw_axes__.m	Wed Dec 21 19:46:57 2011 -0800
+++ b/scripts/plot/private/__go_draw_axes__.m	Thu Dec 22 10:40:42 2011 -0500
@@ -694,11 +694,25 @@
                    else
                      ccol = cdat;
                    endif
+                   if (strncmp (obj.facecolor, "interp", 6) && nd == 3
+                       && numel (xcol) == 3 && isempty (ccol))
+                     ## FIXME - Use isonormals to render interpolated
+                     ##         triangular patches.
+                     obj.facecolor = "flat";
+                   endif
                    if (strncmp (obj.facecolor, "flat", 4))
-                     if (numel(ccol) == 3)
+                     if (numel (ccol) == 3)
                        color = ccol;
                      elseif (nd == 3 && numel (xcol) == 3)
-                       ccdat = ccol * ones (3,1);
+                       if (isempty (ccol))
+                         z = mean (zcol);
+                         nr = size (cmap, 1);
+                         r = interp1 (linspace (clim(1), clim(2), nr),
+                                      (1:nr), z, "nearest", "extrap");
+                         color = cmap (r, :);
+                       else
+                         ccdat = ccol * ones (3,1);
+                       endif
                      else
                        if (cdatadirect)
                          r = round (ccol);