# HG changeset patch
# User Daniel J Sebald <daniel.sebald@ieee.org>
# Date 1463208480 18000
# Node ID e6fcaea7d43380a2f696d385e37fb80e0e8122d1
# Parent  21fdab18f85726684b1dcfbf529fc60508412839
Properly handle 'flat' face color for gnuplot graphics toolkit (bug #47911).

* __gnuplot_draw_axes__.m: Get color from obj.cdata in case of 'flat' facecolor
  in addition to 'none' or [1 1 1].  Remove gnuplot style qualifier 'linecolor
  rgb variable' in the case of 'flat' facecolor.

diff -r 21fdab18f857 -r e6fcaea7d433 scripts/plot/util/private/__gnuplot_draw_axes__.m
--- a/scripts/plot/util/private/__gnuplot_draw_axes__.m	Fri May 13 18:59:29 2016 -0500
+++ b/scripts/plot/util/private/__gnuplot_draw_axes__.m	Sat May 14 01:48:00 2016 -0500
@@ -1174,14 +1174,13 @@
               zz(:,kk)   = xdat(:,k);
               zz(:,kk+1) = ydat(:,k);
               zz(:,kk+2) = zdat(:,k);
-              zz(:,kk+3) = cdat(:,k);
-              if (facecolor_none_or_white)
+              if (flat_interp_face || facecolor_none_or_white)
                 zz(:,kk+3) = cdat(:,k);
               else
                 ## Convert color to 24-bit RGB
                 zz(:,kk+3) = hex2dec (sprintf ("%02x%02x%02x",
                                                round (255*obj.facecolor)));
-               endif
+              endif
               k += 1;
             endfor
             data{data_idx} = zz.';
@@ -1229,7 +1228,12 @@
             endif
           else
             hidden_removal = true;
-            withclause{data_idx} = sprintf ("with pm3d linecolor rgb variable");
+            if (flat_interp_face)
+              color_source = "";
+            else
+              color_source = " linecolor rgb variable";
+            endif
+            withclause{data_idx} = sprintf ("with pm3d%s", color_source);
 
             if (doing_interp_color)
               ## "depthorder" interferes with interpolation of colors.