From: Regina Obe <lr@pcorp.us>
Date: Tue, 3 Jul 2012 15:45:01 +0000 (+0000)
Subject: some examples of delaunay triangles
X-Git-Tag: 2.1.0beta2~841
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=93f47853273f76cced7affc715806aebf8a7ec91;p=postgis

some examples of delaunay triangles

git-svn-id: http://svn.osgeo.org/postgis/trunk@10010 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/doc/html/image_src/Makefile.in b/doc/html/image_src/Makefile.in
index 606b03355..b4f7cef5a 100644
--- a/doc/html/image_src/Makefile.in
+++ b/doc/html/image_src/Makefile.in
@@ -56,6 +56,8 @@ IMAGES= \
 	../images/st_crosses02.png \
 	../images/st_crosses03.png \
 	../images/st_crosses04.png \
+	../images/st_delaunaytriangles02.png \
+	../images/st_delaunaytriangles03.png \
 	../images/st_difference01.png \
 	../images/st_dumppoints01.png \
 	../images/st_issimple01.png \
diff --git a/doc/reference_processing.xml b/doc/reference_processing.xml
index eb7fdced9..a89446cc4 100644
--- a/doc/reference_processing.xml
+++ b/doc/reference_processing.xml
@@ -905,6 +905,54 @@ togheter.
 			<para>Availability: 2.1.0 - requires GEOS &gt;= 3.4.0.</para>
 
 		</refsection>
+			  <refsection>
+		<title>Examples</title>
+			<informaltable>
+				  <tgroup cols="2">
+					<tbody>
+					  <row>
+						<entry><para><informalfigure>
+							<mediaobject>
+							  <imageobject>
+								<imagedata fileref="images/st_delaunaytriangles03.png" />
+							  </imageobject>
+							  <caption><para>ST_DelaunayTriangles of 2 polygons overlaid with delaunay triangle polygons</para></caption>
+							</mediaobject>
+						  </informalfigure>
+				<programlisting>
+-- geometries overlaid multilinestring triangles
+SELECT 
+	ST_DelaunayTriangles(
+		ST_Union(ST_GeomFromText('POLYGON((175 150, 20 40, 
+			50 60, 125 100, 175 150))'),
+		ST_Buffer(ST_GeomFromText('POINT(110 170)'), 20)
+		)) 
+	 As  dtriag;
+				</programlisting>
+						  </para></entry>
+						<entry><para><informalfigure>
+							<mediaobject>
+							  <imageobject>
+								<imagedata fileref="images/st_delaunaytriangles02.png" />
+							  </imageobject>
+							  <caption><para>-- geometries overlaid with multilinestring representation of delaunay triangles</para></caption>
+							</mediaobject>
+						  </informalfigure>
+				<programlisting>
+SELECT 
+	ST_DelaunayTriangles(
+		ST_Union(ST_GeomFromText('POLYGON((175 150, 20 40, 
+			50 60, 125 100, 175 150))'),
+		ST_Buffer(ST_GeomFromText('POINT(110 170)'), 20)
+		),0.001,1) 
+	 As  dtriag;
+				</programlisting>
+						</para></entry>
+					  </row>
+		</tbody>
+	</tgroup>
+</informaltable>
+	  </refsection>
 
 		<refsection>
 			<title>See Also</title>