Infill type
Infill type for a given brush. IceSL is packed
with several options listed bellow. It is possible
to add a custom infill by writing its specifi-
cation (see 'README.md' file in 'icesl-infillers'
folder):

-Automatic: Advised for the majority of situations.
Depending on the infill parameters, it adapts in the
best way possible that is automatic.

-Progressive: Adapts changes to infill percentage to
produce smooth variations on the output. If painting
the infill percentage, it is recommended to blur out
the field.

-Cubic: Infill percentage variations produce no
smoothing between different values.

-Polyfoam: Sponge-like structure infill. Best used
with flexible materials. See other settings below
for more control of the output.

-Phasor: Procedural phasor noise infill for producing
highly deformable structure. See other settings below
for more control of the output.

-Optizor: Orientable cyclic infill for anisotropic
appearance. Infill orientation can be either painted
or specified through an external image (.png and .jpg).

-Variable-width contouring: Variable width deposition
for maximizing the shape precision. A fallback infill
can be used if the contours do not cover the fill
geometry.
