From: Henning Hraban Ramm <texml@fiee.net>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: drop shadows with metapost/ metafun
Date: Sat, 2 Jan 2021 11:38:14 +0100 [thread overview]
Message-ID: <8C9ED233-3DEA-4DAF-90C3-1936F1026C5F@fiee.net> (raw)
In-Reply-To: <CFAD7E2B-C80E-4412-8412-20BCD98282A9@azules.eu>
> Am 29.12.2020 um 22:56 schrieb Garulfo <garulfo@azules.eu>:
>
> Which process would you advice to add « drop shadows » to any kind of metafun / metapost figures like:
> picture p;
> p := textext("MetaPost is fun!") shifted (10cm,10cm);
>
>
> My current understanding of the required steps :
>
>
> 1- fill p with the shadow color
>
> 2- write it to an external metapost file (with savebuffer ?) ready for png export (outputformat := "png »;)
>
> 3- with lua, os.execute, and imagemagick prepare the shadow
> - extent the png file with a transparent background, to have room for blurring
> - blur it
>
> 4- import this png in context / Metapost (externalfigure), and center it with p figure
>
> 5- shift it according to the desired shadows distance and angle
>
> 6- apply the initial bounding box of p to the shadow, draw the shadow, draw the p picture
>
>
> Actually, all this seems long and tedious, and contrasts with the already existing links between MetaPost / MetaFun and cairo + libpng.
I don’t know if that helps, but I’m using a stack of transparent objects to simulate drop shadows:
https://wiki.contextgarden.net/Drop_shadows
No pixel images required. But I’d like to have a real text shadow instead of that box shadow.
Happy New Year!
Hraban
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prev parent reply other threads:[~2021-01-02 10:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-29 21:56 Garulfo
2021-01-01 7:09 ` Aditya Mahajan
2021-01-01 7:15 ` Aditya Mahajan
2021-01-02 10:38 ` Henning Hraban Ramm [this message]
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