Add support for new experimental boolean operation for vector images

[JonasMht]

The new experimental live path effect called boolean operation is not supported for vector images in the GodotEngine.

As an example i use an image with a boolean operation of two overlayed triangles resulting in the following image :

In the GodotEngine the boolean operation is not applied and we can see both triangles:

For more informations about these path functions:
https://wiki.inkscape.org/wiki/index.php/Release_notes/1.0#Boolean_Operation_LPE

Wouldn't it be great if this feature could be added to the svg importer ?

[Calinou]

Godot 3.x uses the NanoSVG library, which only supports a subset of the SVG 1.0 specification. Godot 4.0.alpha uses ThorVG, which is more capable and robust, but still aims to support SVG 1.0 only.

Most importantly, neither NanoSVG nor ThorVG support any Inkscape-specific functionality including Live Path Effects. To get your SVG to render correctly in Godot, you will have to find a way to "bake" your SVG to use standard SVG 1.0 features only. Alternatively, you can export the SVG to a PNG image to be imported by Godot.

[JonasMht]

Very interesting to know. Thank you for your answer!