From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.user Subject: project: translate guile-tutorial.texi to use guile-cairo Date: Thu, 28 Apr 2011 11:41:31 +0200 Message-ID: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1303993043 17559 80.91.229.12 (28 Apr 2011 12:17:23 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 28 Apr 2011 12:17:23 +0000 (UTC) Cc: Daniel Kraft To: guile-devel Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Thu Apr 28 14:17:19 2011 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QFQ9n-0005RV-62 for guile-user@m.gmane.org; Thu, 28 Apr 2011 14:17:19 +0200 Original-Received: from localhost ([::1]:43192 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFQ9m-0000Y2-Gz for guile-user@m.gmane.org; Thu, 28 Apr 2011 08:17:18 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:52024) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFQ9i-0000Sr-UZ for guile-user@gnu.org; Thu, 28 Apr 2011 08:17:15 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QFQ9h-000555-Uz for guile-user@gnu.org; Thu, 28 Apr 2011 08:17:14 -0400 Original-Received: from a-pb-sasl-sd.pobox.com ([64.74.157.62]:40688 helo=sasl.smtp.pobox.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFQ9h-0004aC-Qc for guile-user@gnu.org; Thu, 28 Apr 2011 08:17:13 -0400 Original-Received: from sasl.smtp.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTP id D8090445B; Thu, 28 Apr 2011 08:17:35 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from:to:cc :subject:date:message-id:mime-version:content-type; s=sasl; bh=z uZiFDIv3cqS48FuQMaoyCyeM8o=; b=intJrJPFZ61ta7OHqSZ7sC3378Wzh1Zlr 7ubjPTuqE/1CfQHsaO4POLmtuBjWvIEIVxCDA2MlqxbK2tCOVpLpfkhjtmRHMqR0 jsauLxHQd9VxHC27hjbnj797eSH8SK7jbwqNUuwjm0Wht7aQVTCk0/P6MzCXMj/t sfCKrC8t+Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=from:to:cc :subject:date:message-id:mime-version:content-type; q=dns; s= sasl; b=xNdz2hutRA+QRTKxihpyVcQ5aLfVI0pYkUNNfot1C2aRRi4euLtg14Sr izPWxzugbWb2xQ6E0xyWTpH2ZaNjebHaOMHcfiMSdbwGxMKIIWZ6EPjivmftdlmB u3vG4F7K+r2LEF73FRocI1U9OegC8gba26nNsAPIKyZbeM9053c= Original-Received: from a-pb-sasl-sd.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTP id AEBA6445A; Thu, 28 Apr 2011 08:17:33 -0400 (EDT) Original-Received: from unquote.localdomain (unknown [90.164.198.39]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a-pb-sasl-sd.pobox.com (Postfix) with ESMTPSA id 1E13C4458; Thu, 28 Apr 2011 08:17:31 -0400 (EDT) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) X-Pobox-Relay-ID: 7F04A010-7191-11E0-9313-E8AB60295C12-02397024!a-pb-sasl-sd.pobox.com X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-Received-From: 64.74.157.62 X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:8604 Archived-At: Hi, Guile has a tutorial written by Daniel Kraft, which uses Scheme to extend a C drawing process. It uses Gnuplot for the drawing, which is not GNU, and AFAIK not even free software. It would be better to use some other drawing library; for example, Cairo (http://cairographics.org/). The output would be to a png file instead of to the screen. Then we can also show a final stage of switching to use guile-cairo, and having no C program; and possibly even using a GTK+ surface instead of a PNG surface, which would allow the same program to show data to the screen instead of to a file. What do people think? Is anyone interested in taking up this task? Andy -- http://wingolog.org/