%% %% This is file `README.txt', %% generated with the docstrip utility. %% %% The original source files were: %% %% curve2e.dtx (with options: `readme') %% %% Copyright (C) 2005--2020 Claudio Beccari all rights reserved. %% License information appended %% File README.txt for package curve2e [2020-01-18 v.2.2.0 Extension package for pict2e] The package bundle curve2e is composed of the following files curve2e.dtx curve2e.pdf README.txt curve2e-manual.tex curve2e-manual.pdf curve2e.dtx is the documented TeX source file of file curve2e.sty; you get curve2e.sty, curve2e.pdf, and curve2e-v161.sty by running pdflatex on curve2e.dtx. The curve2e-manual files contain the user manual; in this way the long preliminary descriptive part has been transferred to a shorter dedicated file, and the ^^e2^^80^^9cnormal^^e2^^80^^9d user should have enough information to use the package. Th curve2e.pdf file, extracted from the .dtx one, contains the code documentation and is intended for the developers, or for the curious advanced users. README.txt, this file, contains general information. This bundle contains also package curve2e-v161.sty that is a previous version of this package; see below why the older version might become necessary to the end user. Curve2e.sty is an extension of the package pict2e.sty which extends the standard picture LaTeX environment according to what Leslie Lamport specified in the second edition of his LaTeX manual (1994). This further extension curve2e.sty allows to draw lines and vectors with any non integer slope parameters, to draw dashed lines of any slope, to draw arcs and curved vectors, to draw curves where just the interpolating nodes are specified together with the slopes at such nodes; closed paths of any shape can be filled with color; all coordinates are treated as ordered pairs, i.e. 'complex numbers'; coordinates may be expressed also in polar form. Coordinates may be specified with macros, so that editing any drawing is rendered much simpler: any point specified with a macro is modified only once in its macro definition. Some of these features have been incorporated in the 2011 version of pict2e; therefore this package avoids any modification to the original pict2e commands. Curve2e now accepts polar coordinates in addition to the usual cartesian ones; several macros have been upgraded; a new macro for tracing cubic Bezier splines with their control nodes specified in polar form is available. The same applies to quadratic Bezier splines. The multiput command has been completely modified in a backwards compatible way; the new version allows to manipulate the increment components in a configurable way. A new xmultiput command has been defined that is more configurable than the original one; both \multiput and \xmultiput are backwards compatible with the original picture environment definition. This version solves a conflict with package eso-pic. This version of curve2e is almost fully compatible with pict2e dated 2014/01/12 version 0.2z and later. If you specify \usepackage[]{curve2e} the package pict2e is automatically invoked with the specified options. The -almost fully compatible- phrase is necessary to explain that this version of curve2e uses some `functions' of the LaTeX3 language that were made available to the LaTeX developers by mid October 2018. Should the user have an older or a basic/incomplete installation of the TeX system, such L3 functions might not be available. This is why this package checks the presence of the developer interface; in case such interface is not available it rolls back to the previous version renamed curve2e-v161.sty, which is part of this bundle; this other package name must not be modified in any way. The compatibility mentioned above implies that the user macros remain the same, but their implementation requires the L3 interface. Some macros and environments rely totally on the xfp package functionalities, but legacy documents source files should compile correctly. The package has the LPPL status of maintained. According to the LPPL licence, you are entitled to modify this package, as long as you fulfil the few conditions set forth by the Licence. Nevertheless this package is an extension to the standard LaTeX pict2e (2014) package. Therefore any change must be controlled on the parent package pict2e, so as to avoid redefining or interfering with what is already contained in the official package. If you prefer sending me your modifications, as long as I will maintain this package, I will possibly include every (documented) suggestion or modification into this package and, of course, I will acknowledge your contribution. Claudio Beccari claudio dot beccari at gmail dot com %% %% Distributable under the LaTeX Project Public License, %% version 1.3c or higher (your choice). The latest version of %% this license is at: http://www.latex-project.org/lppl.txt %% %% This work is "maintained" %% %% This work consists of file curve2e.dtx, and the derived files %% curve2e.sty and curve2e.pdf, plus the auxiliary derived files %% README.txt and curve2e-v161.sty. %% %% %% End of file `README.txt'.