From 127b520899930ca11bb613aa06194bff649a1e05 Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Mon, 29 Mar 2021 21:00:50 +0200
Subject: [PATCH] Updated doc.

---
 src/lay/lay/doc/about/drc_ref_layer.xml | 69 ++-----------------------
 1 file changed, 3 insertions(+), 66 deletions(-)

diff --git a/src/lay/lay/doc/about/drc_ref_layer.xml b/src/lay/lay/doc/about/drc_ref_layer.xml
index e42e3b24a..062617f54 100644
--- a/src/lay/lay/doc/about/drc_ref_layer.xml
+++ b/src/lay/lay/doc/about/drc_ref_layer.xml
@@ -1027,74 +1027,11 @@ The following images show the effect of the extents method:
 <keyword name="fill"/>
 <p>Usage:</p>
 <ul>
-<li><tt>layer.fill([ options ])</tt></li>
+<li><tt>layer.fill_with_left([ options ])</tt></li>
 </ul>
 <p>
-This method will attempt to fill the polygons of the layer with a regular pattern
-of shapes.
-</p><p>
-The fill function currently is not available in deep mode.
-</p><p>
-Options are:
-<ul>
-<li><b>hstep(x) </b>or <b>hstep(x, y) </b>: specifies the horizontal step pitch of the pattern. x must be 
-a positive value. A vertical displacement component can be specified too, which results in a skewed pattern. </li>
-<li><b>vstep(y) </b>or <b>vstep(x, y) </b>: specifies the vertical step pitch of the pattern. y must be 
-a positive value. A horizontal displacement component can be specified too, which results in a skewed pattern. </li>
-<li><b>origin(x, y) </b>: specifies a fixed point to align the pattern with. This point specifies the location
-of the reference point for one pattern cell. </li>
-<li><b>auto_origin </b>: lets the algorithm choose the origin. This may result is a slightly better fill coverage
-as the algorithm is able to determine a pattern origin per fill island. </li>
-<li><b>fill_pattern(..) </b>: specifies the fill pattern. </li>
-</ul>
-</p><p>
-"fill_pattern" generates a fill pattern object. This object is used for configuring the fill pattern
-content. Fill pattern need to be named. The name will be used for generating the fill cell.
-</p><p>
-To provide a fill pattern, create a fill pattern object and add shapes to it. The following example creates
-a fill pattern named "FILL_CELL" and adds a 1x1 micron box on layer 1/0:
-</p><p>
-<pre>
-p = fill_pattern("FILL_CELL")
-p.shape(1, 0, box(0.0, 0.0, 1.0, 1.0))
-</pre>
-</p><p>
-See <a href="/about/drc_ref_global.xml#box">box</a> for details about the box specification. You can also add paths or polygons with <a href="/about/drc_ref_global.xml#path">path</a> or <a href="/about/drc_ref_global.xml#polygon">polygon</a>.
-</p><p>
-A more compact way of writing this is:
-</p><p>
-<pre>
-p = fill_pattern("FILL_CELL").shape(1, 0, box(0.0, 0.0, 1.0, 1.0))
-</pre>
-</p><p>
-The fill pattern can be given a reference point which is used for placing the pattern. The reference point
-is the one which is aligned with the pattern origin. The following code will assign (-0.5, -0.5) as the reference
-point for the 1x1 micron rectangle. Hence the reference point is a little below and left of the rectangle which 
-in turn shifts the rectangle fill pattern to the right and up:
-</p><p>
-<pre>
-p = fill_pattern("FILL_CELL")
-p.shape(1, 0, box(0.0, 0.0, 1.0, 1.0))
-p.origin(-0.5, -0.5)
-</pre>
-</p><p>
-Without a reference point given, the lower left corner of the fill pattern's bounding box will be used
-as the reference point.
-</p><p>
-With these ingredients will can use the fill function. The first example fills the polygons
-of "to_fill" with an orthogonal pattern of 1x1 micron rectangles with a pitch of 2 microns:
-</p><p>
-<pre>
-pattern = fill_pattern("FILL_CELL").shape(1, 0, box(0.0, 0.0, 1.0, 1.0)).origin(-0.5, -0.5)
-to_fill.fill(pattern, hstep(2.0), vstep(2.0))
-</pre>
-</p><p>
-This second example will create a skewed fill pattern in auto-origin mode:
-</p><p>
-<pre>
-pattern = fill_pattern("FILL_CELL").shape(1, 0, box(0.0, 0.0, 1.0, 1.0)).origin(-0.5, -0.5)
-to_fill.fill(pattern, hstep(2.0, 1.0), vstep(-1.0, 2.0), auto_origin)
-</pre>
+This method has the same call syntax and functionality than <a href="#fill">fill</a>. Other than this method
+it will return the area not covered by fill cells as a DRC layer.
 </p>
 <a name="first_edges"/><h2>"first_edges" - Returns the first edges of an edge pair collection</h2>
 <keyword name="first_edges"/>