A 2D Paint Polygon Node for use with [PaintProject]s.
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A Polygon2D is defined by a set of points. Each point is connected to the next, with the final point being connected to the first, resulting in a closed polygon. Polygon2Ds can be filled with color (solid or gradient) or filled with a given texture.
The polygon's fill color. If [code]texture[/code] is defined, it will be multiplied by this color. It will also be the default color for vertices not set in [code]vertex_colors[/code].
The list of polygons, in case more than one is being represented. Every individual polygon is stored as a [PoolIntArray] where each [int] is an index to a point in [member polygon]. If empty, this property will be ignored, and the resulting single polygon will be composed of all points in [member polygon], using the order they are stored in.
Amount to offset the polygon's [code]texture[/code]. If [code](0, 0)[/code] the texture's origin (its top-left corner) will be placed at the polygon's [code]position[/code].
Texture coordinates for each vertex of the polygon. There should be one [code]uv[/code] per polygon vertex. If there are fewer, undefined vertices will use [code](0, 0)[/code].
Color for each vertex. Colors are interpolated between vertices, resulting in smooth gradients. There should be one per polygon vertex. If there are fewer, undefined vertices will use [code]color[/code].