Posted by Vishwa on Mar 05, 2015; 6:42am
URL: https://forum.librecad.org/addapting-LibreCAD-to-Mark-DXF-in-2D-Patterning-machine-tp5711131.html

Dear Devs,

I started on working developing some software for 2D patterning machine. We are going to support .DXF file import fabricate using our machine. Out machine has already developed SDK for drawing basic shapes like arc, lines, polygon, circle etc. I did a search on what are the currently available open source implementations.  LibreCad is the best thing I found. I built it for Ubuntu and get debug messages as well.

I thought to prune the GUI prats from the LibreCad and build as a DLL by extracting relevant parts from the LibreCad source in windows.

Firstly I built the  dxfrw project. It seems I could extract shape details from functions in RS_FilterDXFRW source file. But I could not see information like inner filled or not for geometric shapes.
      Q1. Is the details in these functions are enough to DXF drawings into a graphic canvas (I felt it is not enough)?

Then I thought to make use of more source files. I added source files in librecad\src\lib. And to extract geometric shapes in  rs_painterqt.cpp. But it seems too difficult to understand for me to work it out.

Bellow I put the debug messges I received while I'm running the code.

I could receive the bebug messgae as follows.

QC_MDIWindow::slotFileOpen
RS_EntityContainer::RS_EntityContainer: owner: 45669824
RS_Document::RS_Document()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()
RS_Graphic::newDoc
RS_LayerList::addLayer()
RS_LayerList::activate notify: 45669920 begin
RS_LayerList::activate end
RS_Graphic::open(°└ö♠è)
RS_Graphic::newDoc
RS_LayerList::addLayer()
Trying to import file '°└ö♠è'...
RS_FilterDXFRW::RS_FilterDXFRW()
RS_FilterDXFRW::RS_FilterDXFRW(): OK

The original debug messages for the same file as follows.

QC_MDIWindow::slotFileOpen
RS_Graphic::newDoc
RS_LayerList::addLayer()
QG_LayerWidget::update() begin
QG_LayerWidget::update() reactivating current layer
QG_LayerWidget::activateLayer() begin
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
QG_LayerWidget::activateLayer() end
QG_LayerWidget::update() end
QG_LayerWidget::activateLayer() begin
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
QG_LayerWidget::activateLayer() end
RS_Graphic::open(/home/vishwas/LibreCad/LibreCAD/unix/resources/patterns/square.dxf)
RS_Graphic::newDoc
RS_LayerList::addLayer()
QG_LayerWidget::update() begin
QG_LayerWidget::update() reactivating current layer
QG_LayerWidget::activateLayer() begin
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
QG_LayerWidget::activateLayer() end
QG_LayerWidget::update() end
QG_LayerWidget::activateLayer() begin
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
RS_LayerList::activate notify: 0 begin
RS_LayerList::activate end
QG_LayerWidget::activateLayer() end
Trying to import file '/home/vishwas/LibreCad/LibreCAD/unix/resources/patterns/square.dxf'...
Setting up LFF filter...
RS_FilterDXFRW::RS_FilterDXFRW()
RS_FilterDXFRW::RS_FilterDXFRW(): OK
RS_FilterDXFRW::fileImport
DXFRW Filter: importing file '/home/vishwas/LibreCad/LibreCAD/unix/resources/patterns/square.dxf'...
RS_EntityContainer::RS_EntityContainer: owner: 1
RS_VariableDict::addVariable()
RS_FilterDXFRW::fileImport: reading file
RS_VariableDict::addVariable()
RS_VariableDict::addVariable()

     Q2. Can you provide me some guidance to proceed with this?

     Q3. What is the easiest way to achieve my goal (The Q1 method or Q2 method)

Today I found some other thing as well. https://netdxf.codeplex.com/SourceControl/latest. But it seems this is something similar I got from "RS_FilterDXFRW".


Thank you.

Regards,
     Vishwa Shanika