[postgis-tickets] r15340 - ST_IsPolygonCW doc clarifications
Daniel Baston
dbaston at gmail.com
Mon Mar 20 06:24:07 PDT 2017
Author: dbaston
Date: 2017-03-20 06:24:07 -0700 (Mon, 20 Mar 2017)
New Revision: 15340
Modified:
trunk/doc/reference_accessor.xml
Log:
ST_IsPolygonCW doc clarifications
Modified: trunk/doc/reference_accessor.xml
===================================================================
--- trunk/doc/reference_accessor.xml 2017-03-18 11:59:23 UTC (rev 15339)
+++ trunk/doc/reference_accessor.xml 2017-03-20 13:24:07 UTC (rev 15340)
@@ -901,13 +901,13 @@
<title>Description</title>
<para>
- Returns true for (Multi)Polygons that use a counter-clockwise
+ Returns true if all polygonal components of the input geometry use a counter-clockwise
orientation for their exterior ring, and a clockwise direction
for all interior rings.
</para>
<para>
- Returns true for all non-polygonal geometries.
+ Returns true if the geometry has no polygonal components.
</para>
<note>
@@ -919,6 +919,13 @@
</para>
</note>
+ <note>
+ <para>
+ This function does not consider closed linestrings as polygons,
+ and does not check their orientation.
+ </para>
+ </note>
+
<para>&Z_support;</para>
<para>&M_support;</para>
@@ -963,13 +970,13 @@
<title>Description</title>
<para>
- Returns true for (Multi)Polygons that use a clockwise
+ Returns true if all polygonal components of the input geometry use a clockwise
orientation for their exterior ring, and a counter-clockwise direction
for all interior rings.
</para>
<para>
- Returns true for all non-polygonal geometries.
+ Returns true if the geometry has no polygonal components.
</para>
<note>
@@ -981,6 +988,13 @@
</para>
</note>
+ <note>
+ <para>
+ This function does not consider closed linestrings as polygons,
+ and does not check their orientation.
+ </para>
+ </note>
+
<para>&Z_support;</para>
<para>&M_support;</para>
</refsection>
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