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This makes it easier to spot syntax errors when editing the class reference. The schema is referenced locally so validation can still work offline. Each class XML's schema conformance is also checked on GitHub Actions.
98 lines
4.2 KiB
XML
98 lines
4.2 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="BitMap" inherits="Resource" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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Boolean matrix.
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</brief_description>
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<description>
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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.
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="convert_to_image" qualifiers="const">
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<return type="Image" />
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<description>
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Returns an image of the same size as the bitmap and with a [enum Image.Format] of type [code]FORMAT_L8[/code]. [code]true[/code] bits of the bitmap are being converted into white pixels, and [code]false[/code] bits into black.
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</description>
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</method>
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<method name="create">
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<return type="void" />
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<argument index="0" name="size" type="Vector2" />
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<description>
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Creates a bitmap with the specified size, filled with [code]false[/code].
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</description>
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</method>
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<method name="create_from_image_alpha">
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<return type="void" />
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<argument index="0" name="image" type="Image" />
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<argument index="1" name="threshold" type="float" default="0.1" />
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<description>
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Creates a bitmap that matches the given image dimensions, every element of the bitmap is set to [code]false[/code] if the alpha value of the image at that position is equal to [code]threshold[/code] or less, and [code]true[/code] in other case.
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</description>
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</method>
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<method name="get_bit" qualifiers="const">
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<return type="bool" />
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<argument index="0" name="position" type="Vector2" />
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<description>
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Returns bitmap's value at the specified position.
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</description>
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</method>
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<method name="get_size" qualifiers="const">
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<return type="Vector2" />
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<description>
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Returns bitmap's dimensions.
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</description>
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</method>
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<method name="get_true_bit_count" qualifiers="const">
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<return type="int" />
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<description>
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Returns the amount of bitmap elements that are set to [code]true[/code].
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</description>
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</method>
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<method name="grow_mask">
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<return type="void" />
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<argument index="0" name="pixels" type="int" />
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<argument index="1" name="rect" type="Rect2" />
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<description>
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Applies morphological dilation or erosion to the bitmap. If [code]pixels[/code] is positive, dilation is applied to the bitmap. If [code]pixels[/code] is negative, erosion is applied to the bitmap. [code]rect[/code] defines the area where the morphological operation is applied. Pixels located outside the [code]rect[/code] are unaffected by [method grow_mask].
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</description>
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</method>
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<method name="opaque_to_polygons" qualifiers="const">
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<return type="Array" />
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<argument index="0" name="rect" type="Rect2" />
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<argument index="1" name="epsilon" type="float" default="2.0" />
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<description>
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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.
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To get polygons covering the whole bitmap, pass:
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[codeblock]
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Rect2(Vector2(), get_size())
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[/codeblock]
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[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.
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</description>
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</method>
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<method name="resize">
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<return type="void" />
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<argument index="0" name="new_size" type="Vector2" />
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<description>
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Resizes the image to [code]new_size[/code].
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</description>
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</method>
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<method name="set_bit">
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<return type="void" />
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<argument index="0" name="position" type="Vector2" />
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<argument index="1" name="bit" type="bool" />
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<description>
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Sets the bitmap's element at the specified position, to the specified value.
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</description>
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</method>
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<method name="set_bit_rect">
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<return type="void" />
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<argument index="0" name="rect" type="Rect2" />
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<argument index="1" name="bit" type="bool" />
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<description>
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Sets a rectangular portion of the bitmap to the specified value.
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</description>
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</method>
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</methods>
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</class>
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