flag ST_3DIntersects as overloaded sfcgal function

git-svn-id: http://svn.osgeo.org/postgis/trunk@13183 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/doc/reference_measure.xml b/doc/reference_measure.xml
index fa5081a6703d1b04507f111f900e993c972199b7..4a9b5387f15adcc631d57de4610ba3f9994338c4 100644 (file)
--- a/doc/reference_measure.xml
+++ b/doc/reference_measure.xml
@@ -127,7 +127,7 @@ SELECT ST_AsEWKT(ST_3DClosestPoint(line,pt)) AS cp3d_line_pt,
                <!-- Optionally mention supports Polyhedral Surface  -->
                <para>&P_support;</para>
                <para>&sqlmm_compliant; SQL-MM ?</para>
-                <para>&sfcgal_enhanced;</para>
+        <para>&sfcgal_enhanced;</para>
 
                <para>Availability: 2.0.0</para>
          </refsection>
@@ -313,7 +313,7 @@ ST_DWithin(
                        <refname>ST_3DIntersects</refname>
 
                        <refpurpose>Returns TRUE if the Geometries "spatially
-                       intersect" in 3d - only for points and linestrings
+                       intersect" in 3d - only for points, linestrings, polygons, polyhedral surface (area).  With SFCGAL backend enabled also supports TINS and Polyhedral Surfaces (including solids) in addition.
                        </refpurpose>
                </refnamediv>
                <refsynopsisdiv>
@@ -345,9 +345,13 @@ ST_DWithin(
                          comparison that will make use of any indexes that are available on the
                          geometries.</para>
                        </note>
+                       
+                       <note><para>In order to take advantage of support for TINS and extended support for PolyHedralSurfaces, you need to enable the SFCGAL backend.  This can be done at session time with: <code>set postgis.backend = sfcgal;</code> or at the database or system level.  Database level can be done with <code>ALTER DATABASE gisdb SET postgis.backend = sfcgal;</code>.</para></note>
                        <para>&Z_support;</para>
                        <!-- Optionally mention supports Polyhedral Surface  -->
                        <para>&P_support;</para>
+                       <para>&T_support;</para>
+                       <para>&sfcgal_enhanced;</para>
                        <para>&sqlmm_compliant; SQL-MM 3: ?</para>
                </refsection>
                <refsection>
@@ -361,6 +365,14 @@ ST_DWithin(
 (1 row)
                </programlisting>
                </refsection>
+               
+               <refsection><title>TIN Examples</title>
+                   <programlisting>set postgis.backend = sfcgal;
+SELECT ST_3DIntersects('TIN(((0 0,1 0,0 1,0 0)))'::geometry, 'POINT(.1 .1)'::geometry);
+ st_3dintersects 
+-----------------
+ t</programlisting></refsection>
+               
                <refsection>
                        <title>See Also</title>
                        <para><xref linkend="ST_Intersects"/></para>