From: Regina Obe <lr@pcorp.us>
Date: Sat, 12 Sep 2009 03:43:15 +0000 (+0000)
Subject: Add  more line crossings.  change tab to 4 spaces
X-Git-Tag: 1.5.0b1~516
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=224987ed74c6d63aea545a8693c5caafbb2a59c1;p=postgis

Add  more line crossings.  change tab to 4 spaces

git-svn-id: http://svn.osgeo.org/postgis/trunk@4492 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/doc/html/image_src/Makefile.in b/doc/html/image_src/Makefile.in
index 80cb4d440..dcd052fa5 100644
--- a/doc/html/image_src/Makefile.in
+++ b/doc/html/image_src/Makefile.in
@@ -60,6 +60,8 @@ IMAGES= \
 	../images/st_isvalid08.png \
 	../images/st_linecrossingdirection01.png \
 	../images/st_linecrossingdirection02.png \
+	../images/st_linecrossingdirection03.png \
+	../images/st_linecrossingdirection04.png \
 	../images/st_line_interpolate_point01.png \
 	../images/st_line_substring01.png \
 	../images/st_minimumboundingcircle01.png \
diff --git a/doc/html/image_src/st_linecrossingdirection03.wkt b/doc/html/image_src/st_linecrossingdirection03.wkt
new file mode 100644
index 000000000..f6437bdef
--- /dev/null
+++ b/doc/html/image_src/st_linecrossingdirection03.wkt
@@ -0,0 +1,2 @@
+Style2-mediumline;GEOMETRYCOLLECTION(LINESTRING(25 169,89 114,40 70,86 43), POINT(25 169),POLYGON((78.26 40.98,83.98 50.74,86 43,78.26 40.98)) )
+Style1-mediumline;GEOMETRYCOLLECTION(LINESTRING (20 140, 71 74, 161 53), POLYGON ((153.15 48.12, 156.12 60.85, 161 53, 153.15 48.12)))
diff --git a/doc/html/image_src/st_linecrossingdirection04.wkt b/doc/html/image_src/st_linecrossingdirection04.wkt
new file mode 100644
index 000000000..bedf03fc3
--- /dev/null
+++ b/doc/html/image_src/st_linecrossingdirection04.wkt
@@ -0,0 +1,2 @@
+Style2-mediumline;GEOMETRYCOLLECTION(LINESTRING(25 169,89 114,40 70,86 43), POINT(25 169), POLYGON((80.84 41.66,84.66 48.16,86 43,80.84 41.66)) )
+Style1-mediumline;GEOMETRYCOLLECTION(LINESTRING(2.99 90.16,71 74,20 140,171 154),POINT(2.99 90.16),POLYGON((159.33 163.69,171 154,161.31 142.33,159.33 163.69)) )
diff --git a/doc/reference.xml b/doc/reference.xml
index 8852434c3..b5186452d 100644
--- a/doc/reference.xml
+++ b/doc/reference.xml
@@ -9730,6 +9730,55 @@ FROM (SELECT
 			</para>
 		</entry>
 	  </row>
+	  <row>
+				<entry><para><informalfigure>
+					<mediaobject>
+					  <imageobject>
+						<imagedata fileref="images/st_linecrossingdirection03.png" />
+					  </imageobject>
+					  <caption><para>Line 1 (green), Line 2 ball is start point,
+					triangle are end points. Query below. </para></caption>
+					</mediaobject>
+				  </informalfigure>
+				  <programlisting>
+SELECT
+	ST_LineCrossingDirection(foo.line1, foo.line2) As l1_cross_l2 ,
+	ST_LineCrossingDirection(foo.line2, foo.line1) As l2_cross_l1
+FROM (SELECT ST_GeomFromText('LINESTRING(25 169,89 114,40 70,86 43)') As line1,
+ST_GeomFromText('LINESTRING (20 140, 71 74, 161 53)') As line2) As foo;
+
+ l1_cross_l2 | l2_cross_l1
+-------------+-------------
+		  -1 |          1
+				</programlisting>
+			</para>
+		</entry>
+
+		<entry>
+			<para><informalfigure>
+				<mediaobject>
+				  <imageobject>
+					<imagedata fileref="images/st_linecrossingdirection04.png" />
+				  </imageobject>
+				  <caption><para>Line 1 (green), Line 2 ball is start point,
+						triangle are end points. Query below.</para></caption>
+				</mediaobject>
+			  </informalfigure>
+			  <programlisting>
+SELECT ST_LineCrossingDirection(foo.line1, foo.line2) As l1_cross_l2 ,
+	  ST_LineCrossingDirection(foo.line2, foo.line1) As l2_cross_l1
+FROM (SELECT
+	ST_GeomFromText('LINESTRING(25 169,89 114,40 70,86 43)') As line1,
+	ST_GeomFromText('LINESTRING(2.99 90.16,71 74,20 140,171 154)') As line2
+	) As foo;
+
+ l1_cross_l2 | l2_cross_l1
+-------------+-------------
+		  -2 |          0
+				</programlisting>
+			</para>
+		</entry>
+	  </row>
 	  </tbody>
 	</tgroup>
 </informaltable>