From e236005d72e80a42f20ab8c2904156e6c4237ad3 Mon Sep 17 00:00:00 2001
From: Simon Christ <SimonChrist@gmx.de>
Date: Sat, 17 Oct 2020 21:40:11 +0200
Subject: [PATCH] add mesh3d support (#3076)

* add mesh3d support

* correct example string
---
 src/backends.jl           |  1 +
 src/backends/pgfplotsx.jl | 11 +++++++++++
 src/examples.jl           |  7 ++-----
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/backends.jl b/src/backends.jl
index 90e5df3c..bd280f0f 100644
--- a/src/backends.jl
+++ b/src/backends.jl
@@ -818,6 +818,7 @@ const _pgfplotsx_seriestype = [
     :surface,
     :wireframe,
     :heatmap,
+    :mesh3d,
     :contour,
     :contour3d,
     :quiver,
diff --git a/src/backends/pgfplotsx.jl b/src/backends/pgfplotsx.jl
index 0f991d48..d5caf807 100644
--- a/src/backends/pgfplotsx.jl
+++ b/src/backends/pgfplotsx.jl
@@ -527,6 +527,17 @@ function pgfx_add_series!(::Val{:heatmap}, axis, series_opt, series, series_func
     pgfx_add_legend!(axis, series, opt)
 end
 
+function pgfx_add_series!(::Val{:mesh3d}, axis, series_opt, series, series_func, opt)
+    ptable = join([ string(i, " ", j, " ", k, "\\\\") for (i, j, k) in zip(opt[:connections]...) ], "\n        ")
+    push!(
+        series_opt,
+        "patch" => nothing,
+        "table/row sep" => "\\\\",
+        "patch table" => ptable
+    )
+    pgfx_add_series!(axis, series_opt, series, series_func, opt)
+end
+
 function pgfx_add_series!(::Val{:contour}, axis, series_opt, series, series_func, opt)
     push!(axis.options, "view" => "{0}{90}")
     if isfilledcontour(series)
diff --git a/src/examples.jl b/src/examples.jl
index 3273b93b..c5efc2fc 100644
--- a/src/examples.jl
+++ b/src/examples.jl
@@ -1000,8 +1000,8 @@ const _examples = PlotExample[
 	"Mesh3d",
 	"""
 	Allows to plot arbitrary 3d meshes. If only x,y,z are given the mesh is generated automatically.
-	You can also specify the connections using the connections keyword. This is only supported on the Plotly backend.
-	The connections are specified using a tuple of vectors. Each vector contains the 0-based indices of one point of a triangle,
+	You can also specify the connections using the connections keyword.
+    The connections are specified using a tuple of vectors. Each vector contains the 0-based indices of one point of a triangle,
 	such that elements at the same position of these vectors form a triangle.
 	""",
 	[
@@ -1076,16 +1076,13 @@ _backend_skips = Dict(
     :pyplot => [2, 25, 30, 31, 47, 49],
     :plotlyjs => [2, 21, 24, 25, 30, 31, 49],
     :plotly => [2, 21, 24, 25, 30, 31, 49],
-    :pgfplots => [2, 5, 6, 10, 16, 20, 22, 23, 25, 28, 30, 31, 34, 37, 38, 39, 47],
     :pgfplotsx => [
         2, # animation
         6, # images
         16, # pgfplots thinks the upper panel is too small
-        25, # @df
         30, # @df
         31, # animation
         32, # spy
-        47, # mesh3
         49, # polar heatmap
     ],
 )