adding doctest

Mathics3 · Jan 19, 2024 · 15bc589 · 15bc589
1 parent 5c1f1f8
commit 15bc589
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diff --git a/mathics/builtin/drawing/graphics3d.py b/mathics/builtin/drawing/graphics3d.py
@@ -77,6 +77,10 @@ class Graphics3D(Graphics):
         >> Graphics3D[Polygon[{{0,0,0}, {0,1,1}, {1,0,0}}]]
          = -Graphics3D-
 
+        The 'Background' option allows to set the color of the background:
+        >> Graphics3D[Sphere[], Background->RGBColor[.6, .7, 1.]]:
+         = -Graphics-
+
         In 'TeXForm', 'Graphics3D' creates Asymptote figures:
         >> Graphics3D[Sphere[]] // TeXForm
          = #<--#

diff --git a/mathics/builtin/graphics.py b/mathics/builtin/graphics.py
@@ -268,6 +268,10 @@ class Graphics(Builtin):
     >> Graphics[Rectangle[]] // ToBoxes // Head
      = GraphicsBox
 
+    The 'Background' option allows to set the color of the background:
+    >> Graphics[{Green, Disk[]}, Background->RGBColor[.6, .7, 1.]]
+     = -Graphics-
+
     In 'TeXForm', 'Graphics' produces Asymptote figures:
     >> Graphics[Circle[]] // TeXForm
      = #<--#