SVG2规范中英对照（前言）

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svg规范关于transform属性的说明在将svg图形格式转化为其它格式图形的工作中，坐标变换是首当其冲的一件工作，下面我们结合svg规范看看svg是如何处理坐标变换的，理解了这些，再将其转化成你想要的图形格式的变换方式也就不困难了。1.svg采用的初始坐标系统是视图坐标系，即屏幕左上角为左边原点，y轴正方向朝下，x轴正方向朝右2.The value of the transform attribute is a , which i 阅读详情

Scalable Vector Graphics (SVG) 2 【可缩放矢量图形】

W3C Candidate Recommendation 04 October 2018 【W3C 候选推荐 2018/10/4】

当前版本：

https://www.w3.org/TR/2018/CR-SVG2-20181004/

Abstract 概要

This specification defines the features and syntax for Scalable Vector Graphics (SVG) Version 2. SVG is a language based on XML for describing two-dimensional vector and mixed vector/raster graphics. SVG content is stylable, scalable to different display resolutions, and can be viewed stand-alone, mixed with HTML content, or embedded using XML namespaces within other XML languages. SVG also supports dynamic changes; script can be used to create interactive documents, and animations can be performed using declarative animation features or by using script.

此文档定义了可缩放矢量图形（SVG2）的特性和语法。SVG基于XML描叙二维矢量和矢量与栅格混合的图形。SVG内容是风格可定义，适应不同显示分辨率，并且能够独立显示，可以与HTML内容混合，或者被嵌入到使用XML名字空间的其他XML语言中。SVG也支持动态变化；支持脚本生成可交互的文件，并且使用动画特性或者通过脚本执行动画。

Status of This Document 本文状态

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at https://www.w3.org/TR/.

本章节描述发布状态时此文的状态。此文有可能被其它文档取代。当前W3C发布列表和最新版本的技术报告能够在W3C技术索引中找到（https://www.w3.org/TR/）。

This document is the 04 October 2018 Candidate Recommendation of SVG 2. This version of SVG builds upon SVG 1.1 Second Edition by improving the usability and precision of the language. The Changes appendix lists all of the changes that have been made since SVG 1.1 Second Edition.

本文是2018年10月4日候选推荐的SVG2版本。此SVG版本基于SVG1.1第二版基础上，提升了可使用性和语言精确的描述。自SVG1.1第二版的修改列表已经完成。

Publication as a Candidate Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

候选推荐的版本不一定被W3C成员所支持，这是一个草案并且在任何时候有可能被更新，取代或者被废弃。在工作中引用此文档是不合适的。

This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 04 December 2018.

不早于2018/10/4，这个候选推荐期望推进到建议推进阶段。

There is no preliminary implementation report at this time. The SVG Working Group is working on a test suite for SVG2 and expects to produce an implementation report based on those tests.

此时，没有早期执行的报告。SVG工作组正在开发SVG2测试套件，并且基于那些测试结果生成执行报告。

Comments on this Candidate Recommendation are welcome. Comments can be raised as GitHub issues (preferred), or alternatively be sent to www-svg@w3.org, the public email list for issues related to vector graphics on the Web. This list is archived and senders must agree to have their message publicly archived from their first posting. To subscribe send an email to www-svg-request@w3.org with the word subscribe in the subject line.

欢迎向候选推荐提出建议。建议可以在GitHubGitHub issues（推荐），或者发送到www-svg@w3.org，此网页公开了有关矢量图形相关问题的邮箱。问题列表会被存档，并且发送者必须同意在他们首次提出时信息可以被公开。通过邮件主题（subscribe）向www-svg-request@w3.org发送邮件，同意此约定。

The specification includes a number of annotations that the Working Group is using to record links to meeting minutes and resolutions where specific decisions about SVG features have been made. Different coloring is also used to mark the maturity of different sections of the specification:

此文包括一定数量的注脚，该注脚记录了工作组的分析和决定SVG特性的信息。不同颜色也标识出不同章节的成熟度。

a red background indicates a section that is either unchanged since SVG 1.1 (and which therefore still requires review and possible rewriting for SVG 2), or a section that is new but still requires substantial work
红色背景表明该章节自从SVG1.1后没有被修改（并且仍然需要评审和可能重写），或者改章节是新的但是需要大量工作。
a yellow background indicates a section from SVG 1.1 that has been reviewed and rewritten if necessary, or a new section that is complete and ready for the rest of the Working Group to review
黄色背景表明该章节从SVG1.1后，已经被评审和在必要时被重写过，或者一个新的章节已经完成并且准备交付工作组评审。
a white background indicates a section, either from SVG 1.1 or new for SVG 2, that has been reviewed by the Working Group and which is ready for wider review
白色背景表明该章节或者来自SVG1.1，或者是SVG2的新部分，它已经被工作组评审过，并且准备更大范围的评审。

This document has been produced by the W3C SVG Working Group as part of the Graphics Activity within the W3C Interaction Domain. The goals of the W3C SVG Working Group are discussed in the W3C SVG Charter. The W3C SVG Working Group maintains a public Web page, https://www.w3.org/Graphics/SVG/, that contains further background information. The authors of this document are the SVG Working Group participants.

此文有W3C SVG工作组生成，作为W3C交互领域的图形交互的一部分。W3C SVG工作组的目标在W3C SVG Charter里有讨论。W3C SVG工作组维护一个官网，https://www.w3.org/Graphics/SVG/,它给出了更深背景信息。文档的作者是SVG工作组的参与者。

This document was produced by a group operating under the W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

此文在W3C专利下，有一个组织编制生成的。W3C维护专利公开的清单（public list of any patent disclosures ），它连接不同组织形成共通的标准。此清单也包括指导说明。确实了解该专利的个人，且该个人已经声明过，则必须按照章节6，W3C专利政策（section 6 of the W3C Patent Policy），公开相关信息。

A list of current W3C Recommendations and other technical documents can be found at https://www.w3.org/TR/. W3C publications may be updated, replaced, or obsoleted by other documents at any time.

当前W3C推荐列表和其它技术文档，在https://www.w3.org/TR/都可以找到。在任何时候，W3C初版物都有可能被其它文档更新、取代或者废弃。

This document is governed by the 1 February 2018 W3C Process Document.

此文已经在2018年一月纳入W3C过程文档管控。

All features in this specification depend upon implementation in browsers or authoring tools. If a feature is not certain to be implemented, we define that feature as "at risk". At-risk features will be removed from the current specification, and may be included in future versions of the specification. If an at-risk feature is particularly important to authors of SVG, those authors are encouraged to give feedback to implementers regarding its priority. The following features are at risk, and may be dropped during the CR period:

在文档的所有特性依赖与浏览器或者授权工具的执行。如果一个特性不能被稳定执行，我们定义该特性存在风险。存在风险的特性将会从现有的规格中移除，并且有可能在将来的规格中被包含进来。如果一个存在风险的特性对于SVG作者来说有某种重要性，则鼓励作者给出开发该特性优先级的反馈意见。下面特性存在CR阶段被丢弃的风险。

More than one ‘title’ or ‘desc’ to provide localisation
多个标题或者描述以支持本土化
‘zoomAndPan’
缩放和面板
Nested links
嵌套连接
‘unknown’ elements and the SVGUnknownElement interface.
未知元素和SVG未知元素接口
vector-effect options other than non-scaling-stroke
矢量影响选项而不是非量度划线

Table of Contents 内容列表（略）

Acknowledgments 感谢（略）

The SVG Working Group would like to thank the following people for contributing to this specification with patches or by participating in discussions that resulted in changes to the document: David Dailey, Eric Eastwood, Jarek Foksa, Daniel Holbert, Paul LeBeau, Robert Longson, Henri Manson, Ms2ger, Kari Pihkala, Philip Rogers, David Zbarsky.

In addition, the SVG Working Group would like to acknowledge the contributions of the editors and authors of the previous versions of SVG – as much of the text in this document derives from these earlier specifications – including:

Patrick Dengler, Microsoft Corporation (Version 1.1 Second Edition)
Jon Ferraiolo, ex Adobe Systems (Versions 1.0 and 1.1 First Edition; until 10 May 2006)
Anthony Grasso, ex Canon Inc. (Version 1.1 Second Edition)
Dean Jackson, ex W3C (Version 1.1 First Edition; until February 2007)
藤沢淳 (FUJISAWA Jun), Canon Inc. (Version 1.1 First Edition)

Finally, the SVG Working Group would like to acknowledge the great many people outside of the SVG Working Group who help with the process of developing the SVG specifications. These people are too numerous to list individually. They include but are not limited to the early implementers of the SVG 1.0 and 1.1 languages (including viewers, authoring tools, and server-side transcoders), developers of SVG content, people who have contributed on the www-svg@w3.org and svg-developers@yahoogroups.com email lists, other Working Groups at the W3C, and the W3C Team. SVG 1.1 is truly a cooperative effort between the SVG Working Group, the rest of the W3C, and the public and benefits greatly from the pioneering work of early implementers and content developers, feedback from the public, and help from the W3C team.

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