Merge pull request matplotlib#21312 from QuLogic/fix-agg-link

Update link to Agg website

Author: story645

doc/users/history.rst

@@ -75,7 +75,7 @@ backends: PS creates `PostScript®
 <https://www.adobe.com/products/postscript.html>`_ hardcopy, SVG
 creates `Scalable Vector Graphics <https://www.w3.org/Graphics/SVG/>`_
 hardcopy, Agg creates PNG output using the high quality `Anti-Grain
-Geometry <http://antigrain.com/>`_
+Geometry <http://agg.sourceforge.net/antigrain.com/>`_
 library that ships with Matplotlib, GTK embeds Matplotlib in a
 `Gtk+ <https://www.gtk.org/>`_
 application, GTKAgg uses the Anti-Grain renderer to create a figure

examples/misc/demo_agg_filter.py

@@ -7,7 +7,7 @@
 rendering. You can modify the rendering of Artists by applying a filter via
 `.Artist.set_agg_filter`.
 
-.. _Anti-Grain Geometry (AGG): http://antigrain.com
+.. _Anti-Grain Geometry (AGG): http://agg.sourceforge.net/antigrain.com
 """
 
 import matplotlib.cm as cm

lib/matplotlib/backends/backend_agg.py

@@ -1,5 +1,5 @@
 """
-An `Anti-Grain Geometry <http://antigrain.com>`_ (AGG) backend.
+An `Anti-Grain Geometry`_ (AGG) backend.
 
 Features that are implemented:
 
@@ -17,6 +17,8 @@
 Still TODO:
 
 * integrate screen dpi w/ ppi and text
+
+.. _Anti-Grain Geometry: http://agg.sourceforge.net/antigrain.com
 """
 
 try:

src/ft2font.cpp

@@ -20,7 +20,7 @@
  To improve the hinting of the fonts, this code uses a hack
  presented here:
 
- http://antigrain.com/research/font_rasterization/index.html
+ http://agg.sourceforge.net/antigrain.com/research/font_rasterization/index.html
 
  The idea is to limit the effect of hinting in the x-direction, while
  preserving hinting in the y-direction.  Since freetype does not

tutorials/introductory/usage.py

@@ -444,7 +444,7 @@ def my_plotter(ax, data1, data2, param_dict):
 #    The names of builtin backends case-insensitive; e.g., 'QtAgg' and
 #    'qtagg' are equivalent.
 #
-# .. _`Anti-Grain Geometry`: http://antigrain.com/
+# .. _`Anti-Grain Geometry`: http://agg.sourceforge.net/antigrain.com/
 # .. _`Portable Document Format`: https://en.wikipedia.org/wiki/Portable_Document_Format
 # .. _Postscript: https://en.wikipedia.org/wiki/PostScript
 # .. _`Scalable Vector Graphics`: https://en.wikipedia.org/wiki/Scalable_Vector_Graphics