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LibreCAD是一款开源免费的2D CAD制图软件,原名为 CADuntu .它是基于社区版本 QCad 构建,并操纵 Qt4 举行了重构,原生支持 Mac OSX, Windows 和 Linux .它供应了基于 GPL 协议的读取/改正/成立 CAD 文件 (.dxf ) 筹划.

LibreCAD一款2D CAD画图工具已经更新到1.0版比一年前的版本拥有更多功效.LibreCAD,从前称为CADuntu,可以工作在Mac OSX,Windows和Linux版本上,成立在QCad社区版的底子上.

比起QCad社区版,LibreCAD的改变是:最新基于Qt4的用户界面（QCad社区版利用QT3）,插件系统,自动保存和更好的DXF文件读取.此外,QCad社区版正式仅可用于Linux（QCad本身是跨平台的,但不是免费的）,而LibreCAD是跨平台、免费的.
在这个版本中,LibreCAD是安定的,但仍旧需求改良,所以不要期望与专业利用程序相比,如AutoCAD.别的,LibreCAD不拿出文件 - 它最初包含QCad中的文档,但它已被删除,因为它不是在GPL协议下公布.

此外,利用程序不支持DWG文件.有一些这方面的工作,但因为与LibreDWG一些牌照问题还没有实施.

该软件的发展正在举行. LibreCAD V2分支已经开始,它包含很多新的功效,如:

系统新捕捉
等距网格
trisecting一个角度
画图刻圆和椭圆
绘制两个椭圆形的共同切线
更好的国际支持,包含中日韩字体
实行抵消支持
更好的性能 

2.0.7 更新日记

fixed menu item: offset

unicode.lff: typo

bug#492, dimension extension fixes

disabled command widget event filter

fixed a rvalue reference compiling issue

bug#491, update leader arrow size by drawing options

fixed a qt4 building error by papersize

custom paper size: troubleshooting

fixed a typo in KST32B fonts

issue#469, fixed regression on shortcuts

key events: avoid filtering of Enter/Escape

issue#464, switch tab-/sub-window mode with single document

fixed a compiler warning

bug#454, commit e1db360d was lost

splinepoints: restore painter pen

fixed a filled arrow brush bug

bug#485, allow snap to center within an image

unicode: fix by Petr

README: fixed a typo

opengost: added blank line at file end

opengost fonts: fixed encoding

fixed opengost fonts: license, encoding

muparser: c++11 compiler warnings

fixed broken HTML tag in doc/index.html

fixed warning in qg_dlgoptionsgeneral.ui

fixed Splash Screen GroupBox size in Application Preferences, was malformed on Windows

divide: file cleanup

tangent circles: GUI cleanup

tan2/radius: file cleanup

bug#482, misaligned arc option widget on windows

bug#481, disappearing offset line when zooming

fixed enter command, select toolbar regression

trim: cleanup

file cleanup

Appollonius: fixed algorithm to get all possible solutions

Appollonius: fixed a regress, show candidate centers

tan1_2p: code correctness

bug#481, fixed nearest point on line

bug#480, fixed crash due to new spline addition

circle: tan2_1p, fixed a crash by right clicking

selectWindow: no need to set pen for preview

Minor enhancements:

added printpreview to file toolbar

Use Qt arch paper sizes

win32: updated to Qt-5.4.0

Added CAD toolbar to main menu View

Updated KST32B Japanese fonts

updated opengost fonts by stranger573

allow Enter/Return for command Continue

command: added cli calculator by cal/calculate

export pdf: append .pdf file extension by default

ascii: allow reading in raw 2D data without point number column

lineType: added tiny line types

removed c++0x from CFLAGS

command: more short command cleanup

commands: avoid short command ambiguity

added offset to Modify menu

line pattern: use static constants

line patterns: cleanup

applied patch #460, i18n for desktop file by glixx

opengost fonts by stranger573

polyline: added icons for arc direction

added c++11 to CONFIG

actionPolyline: show options according to mode

Updated translations from pootle server

updated help item

add GUI actions by new helper functions Squashed commit of the following:

Czech fonts in unicode.lff, by Petr

unified getDistanceToPoint(): experimental

commands: added divide and fillet

ignore certain compound entities when catching

tan1_2p: improved geometrical algorithm

build-win-setup.bat: allow setting custom NSIS file to match local Qt version

improvement of Windows build scripts, pass SCMREVISION to NSIS installer

.gitignore clean up, ignore all custom. files

updated Qt version to 5.3.2 for Windows build in README.md

trim: polyline not by ::trim()

circle tan1_2p: avoid duplicated centers

osx use bz2 compressed DMG

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