Support for soft masks

[amigalemming]

Please also support blending with soft masks.

[byorgey]

Hi @amigalemming , thanks for the idea. Do you happen to know which backends support this? (For example, do Cairo or SVG support blending with soft masks? Or do you happen to know if https://hackage.haskell.org/package/Rasterific supports it?) Ultimately the kinds of features diagrams offers are somewhat constrained by what features are available in backends.

[amigalemming]

On Mon, 11 Sep 2023, Brent Yorgey wrote: Hi @amigalemming , thanks for the idea. Do you happen to know which backends support this? (For example, do Cairo or SVG support blending with soft masks? Or do you happen to know if https://hackage.haskell.org/package/Rasterific supports it?) Ultimately the kinds of features diagrams offers are somewhat constrained by what features are available in backends.

PostScript does not support transparency. Cairo supports it. See the Mask example at: https://www.cairographics.org/tutorial/ SVG should support it, since Inkscape supports it and it uses SVG. PDF supports it since version 1.4. https://github.com/thielema/hpdf/tree/expression