Adding links to VTK Examples and the textbook

Common/Color/vtkColorSeries.h

@@ -25,7 +25,7 @@
  *
  * For a web page showcasing the default palettes, see:
  * <a
- * href="https://htmlpreview.github.io/?https://github.com/Kitware/vtk-examples/blob/gh-pages/VTKColorSeriesPatches.html">VTKColorSeriesPatches</a>,
+ * href="https://htmlpreview.github.io/?https://github.com/Kitware/vtk-examples/blob/gh-pages/VTKColorSeriesPatches.html">VTKColorSeriesPatches</a>;
  * <a
  * href="https://kitware.github.io/vtk-examples/site/Python/Visualization/ColorSeriesPatches/">ColorSeriesPatches</a>
  * was used to generate this table.

Common/Color/vtkNamedColors.h

@@ -18,8 +18,8 @@
  *
  * For a web page showcasing VTK Named Colors and their RGB values, see:
  * <a
- * href="https://htmlpreview.github.io/?https://github.com/Kitware/vtk-examples/blob/gh-pages/VTKNamedColorPatches.html">VTKNamedColorPatches</a>,
- *.<a
+ * href="https://htmlpreview.github.io/?https://github.com/Kitware/vtk-examples/blob/gh-pages/VTKNamedColorPatches.html">VTKNamedColorPatches</a>;
+ * <a
  * href="https://kitware.github.io/vtk-examples/site/Python/Visualization/NamedColorPatches/">NamedColorPatches</a>
  * was used to generate this table.
  *

README.md

@@ -34,6 +34,9 @@ Learning Resources
 * Doxygen-generated nightly reference documentation is
   available [online][vtk-doxygen].
 
+* There is now a large collection of [VTK Examples][vtk-examples] that
+  showcase VTK features and provide a useful learning resource.
+
 Reporting Bugs
 ==============
 
@@ -85,5 +88,6 @@ See [Copyright.txt][vtk-copyright] for details.
 [vtk-copyright]: Copyright.txt
 [vtk-discourse]: https://discourse.vtk.org/
 [vtk-doxygen]: https://www.vtk.org/doc/nightly/html
+[vtk-examples]: https://kitware.github.io/vtk-examples/site/
 [vtk-homepage]: https://www.vtk.org/
 [vtk-issues]: https://gitlab.kitware.com/vtk/vtk/-/issues

Utilities/Doxygen/doc_version.pl

@@ -170,12 +170,18 @@ print DEST_FILE
   "   1-930934-07-6). VTK has grown (since its initial release in 1994) to a \n",
   "   world-wide user base in the commercial, academic, and research \n",
   "   communities. \n",
+  "   A more recent PDF version of the textbook is available from the link below.\n",
+  "   \@par \n",
+  "   There is now a large collection of VTK Examples that showcase VTK features.\n",
+  "   This is also a useful learning resource. See the link below.\n",
   "  \@par Useful links:\n",
   "  \@li VTK Home: https://vtk.org/\n",
   "  \@li VTK Source: https://gitlab.kitware.com/vtk/vtk\n",
   "  \@li VTK Discourse Forum: https://discourse.vtk.org\n",
-  "  \@li VTK FAQ: http://www.vtk.org/Wiki/VTK_FAQ\n",
-  "  \@li VTK Wiki: http://www.vtk.org/Wiki/\n",
+  "  \@li VTK FAQ: https://www.vtk.org/Wiki/VTK_FAQ\n",
+  "  \@li VTK Wiki: https://www.vtk.org/Wiki/\n",
+  "  \@li VTK Textbook: https://gitlab.kitware.com/vtk/textbook/raw/master/VTKBook/VTKTextBook.pdf\n",
+  "  \@li VTK Examples: https://kitware.github.io/vtk-examples/site/\n",
   "  \@li VTK Dashboard: https://open.cdash.org/index.php?project=VTK\n",
   "  \@li Commercial <a href=\"https://www.kitware.com/products/support.html\">support</a> ",
   "  and <a href=\"http://www.kitware.com/products/protraining.php\">training</a> ",