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Sun, 30 Jan 2022 14:56:21 +0100 (CET) Received: from cauchy.polynum.local (89.121.198.77.rev.sfr.net [77.198.121.89]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by msfrf2615.sfr.fr (SMTP Server) with ESMTPS for <9fans@9fans.net>; Sun, 30 Jan 2022 14:56:21 +0100 (CET) Received: from cauchy.polynum.local (localhost [127.0.0.1]) by cauchy.polynum.local (8.15.2/8.15.2) with ESMTPS id 20UDuJEq000793 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for <9fans@9fans.net>; Sun, 30 Jan 2022 14:56:20 +0100 (CET) Received: (from tlaronde@localhost) by cauchy.polynum.local (8.15.2/8.14.9/Submit) id 20UDuJ6r000837 for 9fans@9fans.net; Sun, 30 Jan 2022 14:56:19 +0100 (CET) X-Authentication-Warning: cauchy.polynum.local: tlaronde set sender to thierry.laronde@sfr.fr using -f Date: Sun, 30 Jan 2022 14:56:19 +0100 From: tlaronde@polynum.com To: 9fans <9fans@9fans.net> Subject: Re: [9fans] licence question Message-ID: References: <16434842210.Ac93ca.881080@composer.9fans.topicbox.com> <16435502450.AdbA0FB.623132@composer.9fans.topicbox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <16435502450.AdbA0FB.623132@composer.9fans.topicbox.com> Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 6cdd797a-81d4-11ec-97ff-cf49d57f59a8 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UM2UwN2JmZGYyNjNhODNjOC1NOWNkNjQ4MjYzNDJmNmI5MWY0OTFm?= =?UTF-8?B?NjVmPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M9cd64826342f6b91f491f65f:1:n7v5A7G7CsQIf9lOOHEm_BmuaWap_CeW-nn-qjx8DHs Le Sun, Jan 30, 2022 at 08:44:05AM -0500, ibrahim via 9fans a =C3=A9crit : > On Sunday, 30 January 2022, at 8:55 AM, tlaronde wrote: > > The lacking piece is the end: converting DVI to something else than PS > and extending DVI to include drawing primitives so that there is a > "MetaPost" generating DVI (Metadraw). The other points are already > addressed. >=20 > Perhaps xdvi is a good start point to understand how to convert dvi to ra= w images. dvi isn't a ready to display format you have to prepare the missi= ng glyphs (fonts). Knuth has provided a converter to make dvi files human r= eadable and you task is to interpret this output. If you take a viewer as a= start point you could store the fineshed rendering in a file instead of sa= ving that. Like ps dvi is also a virtual machine code but much simpler. There is nothing difficult in the task per se. But when adding a new block of DVI commands, it has to be done with some care. METAFONT is also a rasterizer, so the fundamental bits are already there to obtain a rasterized image. But there are, too, converters to develop to translate the glyphes shapes of alien fonts in something METAFONT can understand---TeX only uses the metrics informations, it doesn't care about what is drawn in the boxes, this is why one can use easily PS fonts with TeX; rendering, when what has to be drawn is involved, is another story... And xdvi is the perfect example of the problem: it has a myriad of dependencies. --=20 Thierry Laronde http://www.kergis.com/ http://kertex.kergis.com/ http://www.sbfa.fr/ Key fingerprint =3D 0FF7 E906 FBAF FE95 FD89 250D 52B1 AE95 6006 F40C ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T3e07bfdf263a83c8-M9cd64= 826342f6b91f491f65f Delivery options: https://9fans.topicbox.com/groups/9fans/subscription