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-rw-r--r--doc/classes/BitMap.xml6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/classes/BitMap.xml b/doc/classes/BitMap.xml
index 27ead07e6f..83e598d2ba 100644
--- a/doc/classes/BitMap.xml
+++ b/doc/classes/BitMap.xml
@@ -71,6 +71,12 @@
<argument index="1" name="epsilon" type="float" default="2.0">
</argument>
<description>
+ Creates an [Array] of polygons covering a rectangular portion of the bitmap. It uses a marching squares algorithm, followed by Ramer-Douglas-Peucker (RDP) reduction of the number of vertices. Each polygon is described as a [PackedVector2Array] of its vertices.
+ To get polygons covering the whole bitmap, pass:
+ [codeblock]
+ Rect2(Vector2(), get_size())
+ [/codeblock]
+ [code]epsilon[/code] is passed to RDP to control how accurately the polygons cover the bitmap: a lower [code]epsilon[/code] corresponds to more points in the polygons.
</description>
</method>
<method name="set_bit">