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开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

尊重作者，支持原创，如需转载，请附上原地址：

https://blog.csdn.net/libaineu2004/article/details/89053246

先来看看B站的视频

https://www.bilibili.com/video/BV1Bt4y1y74P

CRC/CNC

Cutter Radius Compensation for Milling machines.

cutter radius compensation

cutter comp

https://github.com/shooter64738/CRC

https://github.com/grbl -- rs274/ngc parser,不支持G40/G41/G42

https://github.com/synthetos/g2

https://github.com/modmaker/BeBoPr

http://gerbv.geda-project.org/

https://github.com/eduard-x/cnc-qt

https://github.com/vlachoudis/bCNC

https://github.com/Smoothieware/Smoothieware ++ http://smoothieware.org/

https://github.com/OpenBuilds

https://github.com/winder/Universal-G-Code-Sender

https://github.com/arkypita/LaserGRBL

https://github.com/svenhb/GRBL-Plotter

https://github.com/cncjs/cncjs

LinuxCNC

http://www.linuxcnc.org/ -- Supports rigid tapping, cutter compensation, and many other advanced control features.

https://github.com/LinuxCNC/linuxcnc

https://github.com/LinuxCNC/linuxcnc/tree/master/src/emc

https://github.com/LinuxCNC/linuxcnc/blob/master/src/emc/rs274ngc/interp_convert.cc -- 刀具补偿

https://github.com/LinuxCNC/simple-gcode-generators

http://linuxcnc.org/dists/lucid/emc2.4/ linuxcnc老版本名称叫EMC2，Enhanced Machine Controller (EMC2) 

Open CASCADE Technology（简称OCCT）

opengl是基础图形库，open cascade是一个高级的CAD开发库，OCC基础就是OpenGL。

https://www.opencascade.com/ 官网

https://www.opencascade.com/content/download-center 下载中心

https://www.opencascade.com/content/latest-release  最新版本下载，只提供x64版本的库，不提供x86

https://www.opencascade.com/content/previous-releases  历史版本下载

https://www.opencascade.com/content/3rd-party-components 第三方依赖库，其中Freetype和Tcl/Tk是必须的

https://dev.opencascade.org/ 开发者平台

https://dev.opencascade.org/doc/overview/html/index.html 开发文档

https://dev.opencascade.org/doc/overview/html/occt_dev_guides__building.html 环境搭建

https://github.com/topics/opencascade github相关

重量级应用：

1、FreeCAD是一个基于OpenCASCADE的开源CAD/CAE工具。 OpenCASCADE是一套开源的CAD/CAM/CAE几何模型核心，来自法国Matra Datavision公司，是著名的CAD软件EUCLID的开发平台。

https://github.com/FreeCAD/FreeCAD

https://github.com/FreeCAD/FreeCAD/blob/master/src/Mod/Import/App/ImpExpDxf.cpp Dxf文件解析

https://www.freecadweb.org/

https://www.freecadweb.org/wiki/CompileOnWindows 源码编译说明

https://github.com/FreeCAD/FreeCAD-ports-cache/releases 依赖库官方发布

https://github.com/apeltauer/FreeCAD/releases 依赖库非官方纯私人发布，版本比较新

https://github.com/FreeCAD/FreeCAD_Conda 依赖库新方式

2、heekscad

HeekCAD是一个免费，开源CAD应用程序，作者是Dan Heeks，[email protected]

https://www.opencascade.com/content/heekscad

https://github.com/Heeks/heekscad

https://github.com/Heeks/heekscad/blob/master/src/HDxf.cpp Dxf文件解析

https://github.com/Heeks/heekscnc

https://github.com/danheeks/dxfconv dxf文件读写

https://github.com/danheeks/HeeksCAM

https://github.com/danheeks/PyCAD

https://github.com/danheeks/PyCAM

https://code.google.com/archive/p/heekscad/downloads

https://code.google.com/archive/p/heekscnc/downloads

https://sites.google.com/site/heekscad/

3、PythonOCC

Python wrapper for Open CASCADE Technology.

http://www.pythonocc.org/

4、cadquery

CadQuery2.0是pythonocc的高级封装库，使用了Qt语言作为界面语言，是一款正在起步的命令行建模软件，由于pythonocc的使命在于封装opencascade而非关注界面，那么对于有界面需求的开发人员，便可以好好关注一下cadquery。

https://github.com/CadQuery/cadquery

5、OpenShapefactory

OpenShapefactory is a Qt-based Geometry Factory that provides a single-point of entry to the most of OCCT geometrical operations.It is a Middle-Man between you, OpenCascade and QT, it serves as a Geometry Factory wrapping OpenCascade, and providing a single-point of entry to the creation of most geometrical operations.

http://code.google.com/p/openshapefactory

6、declaracad

https://github.com/codelv/declaracad

7、mayo

https://github.com/fougue/mayo -- 3D viewer based on OpenCascade，Support of STEP/IGES assemblies (colors and tree structure)

https://github.com/cbernardo/libIGES -- IGES解析

编译源码之前，需要在mayo源工程的opencascade.pri文件手动添加OpenCascade路径：

# Declare pure QMake variables out of OCC envvars

COMMON_PATH = "D:/My Resources/OpenCASCADE-7.5.0-vc14-64/opencascade-7.5.0"#注意斜杆的方向;引号;
CASCADE_INC_DIR = $${COMMON_PATH}/inc
CASCADE_LIB_DIR = $${COMMON_PATH}/win64/vc14/lib
CASCADE_BIN_DIR = $${COMMON_PATH}/win64/vc14/bin
CASCADE_SRC_DIR = $${COMMON_PATH}/src
开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

8、eryar

https://github.com/eryar/occQt Qt demo

http://www.cppblog.com/eryar/ OCCT精品博客，[email protected]

https://www.cnblogs.com/opencascade/ 同上

x、其他相关的博客和轻量级应用：

https://github.com/miho/OCC-CSG -- Simple but powerful CSG tool based on OpenCascade

https://github.com/lvk88/OccTutorial

https://github.com/tpaviot/oce OCE，在OCC基础上扩展

https://github.com/tianxiao/occsamplemfc MFC demo

http://www.zyh1690.org/cadcg/ 博客

https://blog.csdn.net/augusdi/article/category/695059 博客

CAD

1、QCAD

https://www.qcad.org/en/

https://github.com/qcad/qcad

https://qcad.org/en/90-dxflib -- dxflib主页，配套开源库

https://github.com/mcneel/opennurbs -- 配套开源库

https://www.ribbonsoft.com/doc/qcad/latest/developer/

https://www.ribbonsoft.com/doc/qcad/2.2/reference/zh_CN/

最早的版本v2.0.5：https://sourceforge.net/projects/qcadbin-win/

QCAD v2.2.2.1 最后一个v2.x系列的版本

QCAD v3.0.9.0 从v3.x开始使用ECMA Script interface

qcad的dxf读取在\src\io\dxf\RDxfImporter.cpp
void RDxfImporter::endEntity()
{
    QSharedPointer<RSplineEntity> entity(new RSplineEntity(document, RSplineData(spline)));
    importEntity(entity);
}

qcad的样条曲线的绘图在/src/core/RPainterPath.cpp
void RPainterPath::addSpline(const RSpline& spline) {
    int degree = spline.getDegree();
    if (degree<=3) {
        moveTo(spline.getStartPoint());
    }

    QList<RSpline> list = spline.getBezierSegments();

    for (int i=0; i<list.count(); i++) {
        QList<RVector> cps = list[i].getControlPoints();
        // very rare splines of degree >= 4:
        if ((cps.size()>=5 && degree==cps.size()-1)) {
            QList<QSharedPointer<RShape> > segments = spline.getExploded(16);
            for (int k=0; k<segments.length(); k++) {
                QSharedPointer<RLine> l = segments[k].dynamicCast<RLine>();
                if (k==0) {
                    moveTo(l->getStartPoint());
                }
                lineTo(l->getEndPoint());
            }
        }
        else if (cps.size()==4 && degree==3) {
            cubicTo(cps[1], cps[2], cps[3]);
        }
        else if (cps.size()==3 && degree==2) {
            quadTo(cps[1], cps[2]);
        }
        else if (cps.size()==2 && degree==1) {
            lineTo(cps[1]);
        }
        else {
            qWarning() << "RPainterPath::addSpline: invalid bezier segment: " << list[i];
            continue;
        }
    }
}

//\src\core\RPainterPath.h
void quadTo(qreal ctrlPtx, qreal ctrlPty, qreal endPtx, qreal endPty) {
    QPainterPath::quadTo(ctrlPtx, ctrlPty, endPtx, endPty);
}

void cubicTo(qreal ctrlPt1x, qreal ctrlPt1y, qreal ctrlPt2x, qreal ctrlPt2y, qreal endPtx, qreal endPty) {
    QPainterPath::cubicTo(ctrlPt1x, ctrlPt1y, ctrlPt2x, ctrlPt2y, endPtx, endPty);
}

//QPainterPath源码来自Qt官方\Qt\Qt5.12.7\5.12.7\Src\qtbase\src\gui\painting

//cubicTo和quadTo都是用来实现贝塞尔曲线的，那有什么不一样呢？
官方是这么说的：
Same as cubicTo, but the coordinates are considered relative to the current point on this contour.
说白了，就是多了一个控制点而已。
//https://doc.qt.io/qt-5/qpainterpath.html
//https://qtdebug.com/qt-smooth-curve/

2、LibreCAD

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，并利用 Qt4 进行了重构，原生支持 Mac OSX, Windows 和 Linux 。它提供了基于 GPL 协议的读取/修改/创建 CAD 文件 (.dxf ) 方案。

LibreCAD最早源自QCad的老版本，v2.0.5，using mingw-5.1.4 and qt-3.3.x-p8.

https://librecad.org/

https://github.com/LibreCAD

https://sourceforge.net/projects/librecad/

LibreCAD v1.0.4 最后一个v1.x系列的版本

LibreCAD v2.0.0alpha2 开始使用c++ boost库

3、KiCAD EDA

A Cross Platform and Open Source Electronics Design Automation Suite

https://www.kicad-pcb.org/

https://gitlab.com/kicad/code/kicad ++ https://www.wxwidgets.org/ 界面不是用Qt写的，而是wxWidgets

https://github.com/KiCad/kicad-source-mirror

https://gitlab.com/kicad/code/kicad/-/tree/master/thirdparty/tinyspline_lib 改版的tinyspline，可以和QCAD的dxflib配套

https://github.com/msteinbeck/tinyspline 原版的tinyspline

https://gitlab.com/kicad/code/kicad/-/tree/master/thirdparty/dxflib_qcad 改版的dxflib

https://qcad.org/en/90-dxflib 原版的dxflib

请重点关注https://gitlab.com/kicad/code/kicad/-/blob/master/pcbnew/import_gfx/dxf_import_plugin.cpp，它用dxflib库解析dxf文件

\pcbnew\import_gfx\dxf_import_plugin.cpp
#include "tinyspline_lib/tinysplinecpp.h"

void DXF_IMPORT_PLUGIN::insertSpline( int aWidth )
{
    unsigned imax = m_curr_entity.m_SplineControlPointList.size();
    if( imax < 2 )  // malformed spline
        return;

    // Use bezier curves, supported by pcbnew, to approximate the spline
	tinyspline::BSpline dxfspline( m_curr_entity.m_SplineControlPointList.size(),
                                   /* coord dim */ 2, m_curr_entity.m_SplineDegree );
    std::vector<double> ctrlp;

    for( unsigned ii = 0; ii < imax; ++ii )
    {
        ctrlp.push_back( m_curr_entity.m_SplineControlPointList[ii].m_x );
        ctrlp.push_back( m_curr_entity.m_SplineControlPointList[ii].m_y );
    }

	dxfspline.setCtrlp( ctrlp );
	dxfspline.setKnots( m_curr_entity.m_SplineKnotsList );
	tinyspline::BSpline beziers( dxfspline.toBeziers() );

    std::vector<double> coords = beziers.ctrlp();

    // Each Bezier curve uses 4 vertices (a start point, 2 control points and a end point).
    // So we can have more than one Bezier curve ( there are one curve each four vertices)
    for( unsigned ii = 0; ii < coords.size(); ii += 8 )
    {
        VECTOR2D start( mapX( coords[ii] ), mapY( coords[ii+1] ) );
        VECTOR2D bezierControl1( mapX( coords[ii+2] ), mapY( coords[ii+3] ) );
        VECTOR2D bezierControl2( mapX( coords[ii+4] ), mapY( coords[ii+5] ) );
        VECTOR2D end( mapX( coords[ii+6] ), mapY( coords[ii+7] ) );
        m_internalImporter.AddSpline( start, bezierControl1, bezierControl2, end , aWidth );
    }
}

\pcbnew\import_gfx\graphics_importer_buffer.h
void ImportTo( GRAPHICS_IMPORTER& aImporter ) const override
{
    aImporter.AddSpline( m_start, m_bezierControl1, m_bezierControl2, m_end, m_width );
}

\pcbnew\import_gfx\graphics_importer_pcbnew.cpp
void GRAPHICS_IMPORTER_PCBNEW::AddSpline( const VECTOR2D& aStart, const VECTOR2D& BezierControl1,
                const VECTOR2D& BezierControl2, const VECTOR2D& aEnd, double aWidth )
{
    unique_ptr<DRAWSEGMENT> spline( createDrawing() );
    spline->SetShape( S_CURVE );
    spline->SetLayer( GetLayer() );
    spline->SetWidth( MapLineWidth( aWidth ) );
    spline->SetStart( MapCoordinate( aStart ) );
    spline->SetBezControl1( MapCoordinate( BezierControl1 ) );
    spline->SetBezControl2( MapCoordinate( BezierControl2 ) );
    spline->SetEnd( MapCoordinate( aEnd ) );
    spline->RebuildBezierToSegmentsPointsList( aWidth );

    if( spline->Type() == PCB_MODULE_EDGE_T )
        static_cast<EDGE_MODULE*>( spline.get() )->SetLocalCoord();

    addItem( std::move( spline ) );
}

\pcbnew\class_drawsegment.cpp
void DRAWSEGMENT::RebuildBezierToSegmentsPointsList( int aMinSegLen )
{
    // Has meaning only for S_CURVE DRAW_SEGMENT shape
    if( m_Shape != S_CURVE )
    {
        m_BezierPoints.clear();
        return;
    }
    // Rebuild the m_BezierPoints vertex list that approximate the Bezier curve
    std::vector<wxPoint> ctrlPoints = { m_Start, m_BezierC1, m_BezierC2, m_End };
    BEZIER_POLY converter( ctrlPoints );
    converter.GetPoly( m_BezierPoints, aMinSegLen );
}

\common\bezier_curves.cpp
void BEZIER_POLY::GetPoly( std::vector<wxPoint>& aOutput, int aMinSegLen )
{
}

4、BRL-CAD

 BRL-CAD 是一个构造实体几何(CSG) 实体模型计算机辅助设计(CAD) 系统。

https://sourceforge.net/projects/brlcad/

https://brlcad.org

5、openscad

https://github.com/openscad/openscad

http://www.openscad.org/ OpenSCAD是一个创建立体3D CAD物体的得力软件

6、RapCAD

https://github.com/GilesBathgate/RapCAD

7、AnyCAD 国产软件

http://www.anycad.net/

https://github.com/anycad

8、Vero WorkNC

CNC刀路设计软件。WorkNC是vero worknc系列软件的新版本，软件具有多种自动刀具路径类型，可以满足用户的各种需求，包括粗加工、精加工、优化加工、清根加工、外形轮廓加工、曲线加工及钻孔等，可以实现全局粗加工刀具路径通过允许微小刀柄近似来访问更难的区域。

9、Coin3D

https://bitbucket.org/Coin3D/coin/wiki/Home

10、某位大牛的作品

https://www.cnblogs.com/ucancad/

11、NaroCAD

NaroCAD is a fully fledged and extensible 3D parametric modeling CAD application. It is based on OpenCascade.

http://narocad.com/

https://github.com/mikowiec/rhiocad

12、JCAE

JAVA based environment for CAE applications.

http://jcae.sourceforge.net/

13、gCAD3D

http://www.gcad3d.org/

14、boardcad

http://www.boardcad.com/

15、solvespace

http://solvespace.com/index.pl

16、DraftSight 不开源

https://www.3ds.com/products-services/draftsight-cad-software/

17、CAD from a parallel universe

https://github.com/mkeeter/antimony

x、大全集合

https://github.com/mrkaban/Lpro/wiki/%D0%A1%D0%90%D0%9F%D0%A0

http://www.anderswallin.net/open-source-software/

https://sourceforge.net/directory/science-engineering/mechcivileng/caddcam/os:windows/ 可以搜索到很多开源项目

CAM

CNC Master

https://sourceforge.net/projects/cncmaster/

Techne (R) CAD/CAM

https://sourceforge.net/projects/technecadcam/ 2.5D CAD CAM emphasis on CAM and toolpaths

https://camotics.org/ ++ https://github.com/CauldronDevelopmentLLC/CAMotics

https://github.com/aewallin

https://github.com/aewallin/openvoronoi OpenVoronoi for 2D toolpaths

https://github.com/aewallin/opencamlib OpenCAMLib for 3D toolpaths

http://www.anderswallin.net/CAM/ 文章

http://www.anderswallin.net/open-source-software/ 文章

https://github.com/OpenBuilds/OpenBuilds-CAM  Online CNC CAM System,JavaScript

Monocam

DXF2GCODE

dxf2gcode is a tool for converting 2D (dxf, pdf, ps) drawings to CNC machine compatible GCode.

https://sourceforge.net/projects/dxf2gcode/ 与EMC2集成/G0通过路径优化减少移动/通过Line and Arc's改进了样条线导入的精度

https://github.com/pcb2gcode pcb2gcode最短路径

https://sourceforge.net/projects/dxf2gcode/ dxf2gcode: converting 2D dxf drawings to CNC machine compatible G-Code

注册表 HKEY_CURRENT_USER\Software\dxf2gcode

配置文件 C:\Users\<用户名>\.config\dxf2gcode

开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

PyCharm python3.7+PyQt5.0学习开源代码dxf2gcode

PCB Milling/CAM

嘉立创EDA

https://lceda.cn/

https://lceda.cn/editor

PCBMilling

https://wiki.base48.cz/PCBMilling

https://reprap.org/wiki/PCB_Milling

http://solvespace.com/index.pl CRC

https://github.com/solvespace/solvespace Solvespace is open source and claims to export tool paths as gcode with cutter radius compensation

https://github.com/malichao/GerberCAM

https://github.com/SmartMachines/OpenCAM -- Qt

FlatCAM

是免费和开源的 PCB CAM，采用 Python + PyQt编写，在大多数平台上稳定运行。FlatCAM 是一种为在数控雕刻机上制造 pcb 的数控工作的程序。它将您的 PCB 工程项目生成的 Gerber 文件，转换成数控雕刻机通用的 G-Code 代码。

http://flatcam.org/ -- 2D Computer-Aided PCB Manufacturing

https://bitbucket.org/jpcgt/flatcam

http://flatcam.org/manual/objectreference.html#paint-area 刀补算法使用的是shapely，它是计算几何库GEOS的Python包。

https://bitbucket.org/jpcgt/flatcam/src/master/ 稳定版源码下载

https://bitbucket.org/jpcgt/flatcam/src/Beta/ 最新版beta源码下载

https://bitbucket.org/jpcgt/flatcam/downloads/ 安装程序下载

开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

Clipper计算机图形库，刀补

https://libaineu2004.blog.csdn.net/article/details/103525859

https://github.com/LibrePCB/LibrePCB

Candle 蜡烛

https://github.com/Denvi/Candle -- GRBL controller application with G-Code visualizer written in Qt

Candle的文件解析GcodeParser.cpp来源自Will Winder编写的“ Universal GcodeSender”开源项目。此文件最初是从“ GcodeViewParse.java”类移植的。而Universal-G-Code-Sender又是基于grbl的java版本。

grbl：使用优化的C语言编写的开源，嵌入式，高性能g代码解析器和CNC铣削控制器，将在直接的Arduino上运行。

https://github.com/gnea/grbl

https://github.com/grbl/grbl/wiki

http://bengler.no/grbl

Universal-G-Code-Sender：A Java based GRBL compatible cross-platform G-Code sender.

https://github.com/winder/Universal-G-Code-Sender

https://github.com/winder/Universal-G-Code-Sender/tree/master/test_files 提供了测试用的*.nc文件

https://github.com/synthetos/TinyG

https://github.com/synthetos/g2

http://smoothieware.org/ ++ https://github.com/Smoothieware/Smoothieware

开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

Cura

https://github.com/Ultimaker/Cura -- 3D printer / slicing GUI built on top of the Uranium framework

https://github.com/Ultimaker/CuraEngine

开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

开源的仿真软件HOPSAN

Hopsan是一个免费的开源多域系统仿真工具，由林平大学流体与机电系统系开发。

https://github.com/Hopsan/hopsan

开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

SoftPLC, IEC 61131-3

按照工业控制领域常用的IEC61131-3标准来看，工业控制领域程序语言被分为了两大类五种语言，两大类是指图形化编程和代码编程，图形化编程中有Ladder（梯形图），FBD（Function Block Diagram，功能块图）和SFC（Sequential Function Chart，序列功能表），而代码编程有IL（Instruction List，指令集）和ST（Structured Text，结构化文本）。

几个著名的开源项目：

  • PLCEdit：完全按照IEC61131标准开发，所有五种语言均支持，使用Python开发，故可以做到跨平台。
  • Beremiz：一套完整的开源PLC解决方案，不过放在这里主要是因为它不但使用了上面说的PLCEdit，同时还对其进行了增强，使得其增加了重要的在线调试功能。推荐！！！
  • SoapBox Snap：使用C#+WPF开发的，仅支持梯形图一种语言，不过却已经支持了在线调试功能，含模拟器。
  • LDmicro: Ladder Logic for PIC and AVR  http://cq.cx/ladder.pl && https://github.com/LDmicro/LDmicro
  • 国人：https://blog.csdn.net/yunhaiC/article/details/74518176
开源项目推荐：CNC+CRC/SoftPLC/OpenCASCADE/CAD/CAM

官网链接：

http://www.plcedit.org/

https://beremiz.org/index.html.en

https://bitbucket.org/skvorl/beremiz/src/default/

https://sourceforge.net/p/beremiz/beremiz/ci/default/tree/

https://github.com/nucleron/beremiz

http://soapboxautomation.com/

https://www.openplcproject.com/plcopen-editor openplc

https://github.com/thiagoralves/OpenPLC-Ladder-Editor

https://github.com/thiagoralves/OpenPLC_v2

https://github.com/starsight/RobotStudio

https://github.com/starsight/iec-compiler

开源项目推荐 CAD/CAM 刀具补偿 SoftPLC cad cam openCasCade
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