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<?xml version="1.0" encoding="UTF-8" ?>
<class name="BitMap" inherits="Resource" category="Core" version="3.2">
<brief_description>
Boolean matrix.
</brief_description>
<description>
A two-dimensional array of boolean values, can be used to efficiently store a binary matrix (every matrix element takes only one bit) and query the values using natural cartesian coordinates.
</description>
<tutorials>
</tutorials>
<demos>
</demos>
<methods>
<method name="create">
<return type="void">
</return>
<argument index="0" name="size" type="Vector2">
</argument>
<description>
Creates a bitmap with the specified size, filled with false.
</description>
</method>
<method name="create_from_image_alpha">
<return type="void">
</return>
<argument index="0" name="image" type="Image">
</argument>
<argument index="1" name="threshold" type="float" default="0.1">
</argument>
<description>
Creates a bitmap that matches the given image dimensions, every element of the bitmap is set to false if the alpha value of the image at that position is equal to [code]threshold[/code] or less, and true in other case.
</description>
</method>
<method name="get_bit" qualifiers="const">
<return type="bool">
</return>
<argument index="0" name="position" type="Vector2">
</argument>
<description>
Returns bitmap's value at the specified position.
</description>
</method>
<method name="get_size" qualifiers="const">
<return type="Vector2">
</return>
<description>
Returns bitmap's dimensions.
</description>
</method>
<method name="get_true_bit_count" qualifiers="const">
<return type="int">
</return>
<description>
Returns the amount of bitmap elements that are set to true.
</description>
</method>
<method name="grow_mask">
<return type="void">
</return>
<argument index="0" name="pixels" type="int">
</argument>
<argument index="1" name="rect" type="Rect2">
</argument>
<description>
</description>
</method>
<method name="opaque_to_polygons" qualifiers="const">
<return type="Array">
</return>
<argument index="0" name="rect" type="Rect2">
</argument>
<argument index="1" name="epsilon" type="float" default="2.0">
</argument>
<description>
</description>
</method>
<method name="set_bit">
<return type="void">
</return>
<argument index="0" name="position" type="Vector2">
</argument>
<argument index="1" name="bit" type="bool">
</argument>
<description>
Sets the bitmap's element at the specified position, to the specified value.
</description>
</method>
<method name="set_bit_rect">
<return type="void">
</return>
<argument index="0" name="rect" type="Rect2">
</argument>
<argument index="1" name="bit" type="bool">
</argument>
<description>
Sets a rectangular portion of the bitmap to the specified value.
</description>
</method>
</methods>
<constants>
</constants>
</class>
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