Merge branch 'upstream'

demo/all.dem

@@ -546,6 +546,7 @@ load "pm3d_lighting.dem"
 
 print "********************** file polygons.dem *********************"
 load "polygons.dem"
+load "polygon_border.dem"
 
 print "********************** file named_palettes.dem *********************"
 load "named_palettes.dem"

demo/animation.dem

@@ -6,7 +6,7 @@
 # Example of intended use:
 #     set term webp animate delay 100 size 300,300
 #     set output 'world.webp'
-#     load 'animate2.dem'
+#     load 'animation.dem'
 #     unset output
 
 unset title

demo/polygon_border.dem

@@ -0,0 +1,45 @@
+# Illustrate the difference, if any, between plot styles
+# "with filledcurves closed" and "with polygons".
+
+$VERTICES << EOD
+ -5.9608  0.9392
+  1.7326  1.0500
+  4.7459  0.5927
+  3.6880  0.2498
+  7.3104 -0.2681
+  2.4378 -0.4646
+ -0.4792 -0.1360
+ -3.9092 -0.0109
+ -6.7623  0.2676
+ -4.8709  0.5070
+
+ -1.9730  1.7596
+  3.2406  1.8143
+  4.9785  1.6039
+  3.9915  1.2840
+  6.2444  0.9399
+  4.5279  0.7578
+  2.6827  0.8862
+ -0.9003  0.9494
+ -2.5738  1.2051
+EOD
+
+set style fill transparent solid 0.2 border
+unset key
+unset tics
+unset border
+set tmargin 4
+
+set multiplot layout 1,2 title "Compare closure of perimeter"
+
+set title "with filledcurves" right
+plot $VERTICES using 1:2:(column(-1)+3) with filledcurves lc var lw 4, \
+            '' using 1:2:0 with labels offset .5,.5
+
+set title "with polygons" right
+plot $VERTICES using 1:2:(column(-1)+3) with polygons lc var lw 4, \
+            '' using 1:2:0 with labels offset .5,.5
+
+unset multiplot
+pause -1 "<cr> to continue"
+reset