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| | * Set up the development environment such as OS. | | * Set up the development environment such as OS. |
| | * Start to look at the different potential libraries code base. | | * Start to look at the different potential libraries code base. |
| − | * Discuss with mentors which external library to choose.
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| − |
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| − | ==May 16th==
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| − | *Start to check the checklist.
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| − | **Agreement sent.
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| − | **Dev log created.
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| − | **My Profile created.
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| | | | |
| | ==May 17th== | | ==May 17th== |
| | * Had four of my wisdom teeth extracted. The progress for the following week may be slow due to teeth extraction. | | * Had four of my wisdom teeth extracted. The progress for the following week may be slow due to teeth extraction. |
| | + | |
| | + | ==May 18th== |
| | + | * Rest. |
| | | | |
| | ==May 19th== | | ==May 19th== |
| | * Looking at [https://bitbucket.org/Coin3D/dime/src/default/ Coin3D/Dime] code base, a possible library for DXF import/export. | | * Looking at [https://bitbucket.org/Coin3D/dime/src/default/ Coin3D/Dime] code base, a possible library for DXF import/export. |
| | ** It has no external dependency. | | ** It has no external dependency. |
| − | ** It supports all past and should support the future version of DXF format. | + | ** It supports all past and should support future version of DXF format. |
| | ** It compiles on Windows, Linux, MacOS, etc. | | ** It compiles on Windows, Linux, MacOS, etc. |
| | ** But it only loads DXF files into Dime object hierarchies and saves Dime object hierarchies as files conforming to DXF format. | | ** But it only loads DXF files into Dime object hierarchies and saves Dime object hierarchies as files conforming to DXF format. |
| − | ** Seems only support 3D.
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| | | | |
| | ==May 20th== | | ==May 20th== |
| − | *Looking at [https://sourceforge.net/p/brlcad/code/HEAD/tree/brlcad/trunk/src/conv/dxf/ BRL-CAD] DXF import/export code. Trying to understand how it works and see if it is suitable for OpenSCAD. | + | *Looking at BRL-CAD DXF import/export code. Trying to test if it is suitable for OpenSCAD. |
| − | **It converts DXF format to .g and .g to DXF which is a BRL-CAD format.
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| − | **It seems that BRL-CAD does not support the entire format, only the part that is relative to solid-model.
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| − | | |
| − | ==May 21st==
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| − | *Looking at [https://qcad.org/en/90-dxflib dxflib] which is used by QCAD and works fine, but it only supports 2D which is not ideal since OpenSCAD is already supporting 2D.
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| − | **Maybe we can add the 3D part. But not sure how hard it is to add that.
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| − | | |
| − | ==May 22nd==
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| − | *Searching for a library that supports both 3D and 2D DXF import/export.
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| − | **Libraries above are for either 2D or 3D.
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| − | **Found some libraries support both but they are written in python instead of C++.
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| − | | |
| − | ==May 23rd==
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| − | *Continue on searching for the potential library.
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| − | | |
| − | ==May 24th==
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| − | *Looking at and Compile [https://github.com/LibreCAD/libdxfrw libdxfrw] code base which is used by LibreCAD.
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| − | *Will be out of town for the next two days.
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| | | | |
| | =Coding Period= | | =Coding Period= |
| − | ==May==
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| − | ===May 27th===
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| − | *Looking at both libdxfrw(libdxfrw.h, dxfreader.cpp) and OpenSCAD(dxfdata.cc, dxfdim.cc, import.cc) relative code.
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| − | **Comparing the differences between these two on how they handle DXF data.
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| − | **Trying to form a connection between these two.
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| − | **dxfdata.cc seems a bit complicated. Need some time to digest.
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| − | **The way that libdxfrw reads DXF file is kind of mixing with DRW code.
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| − | **libdxfrw encounters problems when dealing with elevated arcs(no response yet).[https://sourceforge.net/p/librecad/bugs/596/]
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| − | *Looking at dxflib code base as well.
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| − | **dxflib does not store any entities, only pass supported entities.
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| − | **A useful link for understanding dxflib data structure.[https://qcad.org/doc/dxflib/2.5/classref/class_d_l___dxf.html]
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| − | ===May 28th===
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| − | *Move on to reading dxflib code for now
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| − | **Continue reading the link about the data structure of dxflib above.
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| − | **Trying to understand form the connection between dxflib and OpenSCAD code base.
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| − | *Continue reading dxfdata.cc
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| − | ===May 29th===
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| − | *Found another one existing integration with dxflib that I can use it as reference.[https://github.com/CauldronDevelopmentLLC/CAMotics/tree/master/src CAMotics]
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| − | *Continue on reading dxflib and import.cc, dxfdata.cc.
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| − | **Keep trying to write some code that may help understanding how to integrate the library.
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| − | *Fill out the comparison [https://github.com/openscad/openscad/wiki/DXF-Library-overview wiki page]
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| − |
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| − | ===May 30th===
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| − | *Had to go the dentist this morning, will catch up the afternoon and at night.
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| − | *Keep browsing for more information for those four libraries.
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| − | *Reading [https://images.autodesk.com/adsk/files/autocad_2012_pdf_dxf-reference_enu.pdf DXF standard] to learn how DXF format works
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| − |
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| − | ===May 31th===
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| − | *Searching more information for potential libraries.
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| − | **Add more information that found to the comparison page.
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| − | *Learning how to integrate the library from the [https://ribbonsoft.com/doc/dxflib/2.5/reference/contents.html instruction] written by QCAD.
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| − |
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| − | ==June==
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| − |
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| − | ===June 3rd===
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| − | *We stick with using BRL-CAD's code for now.
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| − | *Try to implement the circle entity.
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| − | **Add a callback function on [https://github.com/leonplust/brlcadDXF/commit/1abc40cbe24793fbd9f94001b1a8d30e28602780#diff-3db848059130b96c98744620379df21a dxf-g.c] to pass the data back to openSCAD.
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| − | **Add processentitiyecircle() to [https://github.com/leonplust/openscad/blob/dxflibrary/src/dxfdata.cc dxfdata.cc] and some other changes to enable that function.
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| − | **Having some issue with ADDLINE. Will dig into that later.
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| − |
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| − | ===June 4th===
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| − | *Push few commits on [https://github.com/leonplust/openscad/tree/dxf-import import_dxf branch].
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| − | **Basically create a new import_dxf() function that replace the old dxfdata.cc
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| − | **Implement a simple geometry to test out the function
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| − |
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| − | ===June 5th===
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| − | *Modify the code committed yesterday to output a simple circle.
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| − | *Trying to understand layer, block.
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| − |
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| − | ===June 6th===
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| − | *Created a new branch [https://github.com/leonplust/brlcadDXF/tree/prototype prototype] on brlcadDXF repo.
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| − | **Trying to clean up the code so that it could compile independently.
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| − |
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| − | ===June 7th===
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| − | *Switch some functions and datatype and continue on cleaning up the code.
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| − | *Spend most of my day studying the exam tonight. Will make up the time tomorrow.
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| − |
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| − | ===June 8th===
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| − | *Walked through the whole file line by line and cleaned up as much as I can so far. There are still many details that I need to learn to clean up the rest.
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| − |
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| − | ===June 10th===
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| − | *Made changes to dxf-g.c according to the answer from brlcad.
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| − |
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| − | ===June 11th===
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| − | *fix bu_list with std::list and related functions, etc.
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| − |
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| − | ===June 12th===
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| − | *Add functions for circle eclipse from vmath.h, color.h.
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| − |
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| − | ===June 13th===
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| − | *Added more functions from dependencies.
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| − | *uploaded a file that records to-do list, question, notes, etc.
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| − | ===June 14th===
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| − | *few fixes on dxf-g.cc.
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| − | *Study for the midterm tonight for the most of the day will make up the hours tomorrow.
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| − |
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| − | ===June 15th===
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| − | *Finished converting all bu_list data structure to std::list except in one function drawmtext().
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| − | **drawmtext() may be removed later.
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| − | ===June 17th===
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| − | *Finished fixing all bu_vert_tree structure.
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| − | *Started on fixing vls a bit.
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| − | ===June 18th===
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| − | *Finished fixing all vls except those in the main().
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| − | ===June 19th===
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| − | *Finished most of the parts of dxf-g.c.
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| − | ** Create a new branch [https://github.com/leonplust/brlcadDXF/tree/test test] for testing and commented out some less necessary functions to test.
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| − | ** Upload test files from openSCAD testdata/dxf
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| − | ** Need to fix the segmentation fault.
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| − |
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| − | ===June 20th===
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| − | *Fixed numbers of segmentation faults mainly caused by malloc.
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| − |
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| − | ===June 21st===
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| − | *Fix strncmp function error
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| − | *Tested with circle, ellipse, failed at block section.
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| − | *Tried to reconstruct block_list, block_head data structure.
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| − |
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| − | ===June 24th===
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| − | * Fix block_list data structure
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| − | * Now dxf-g.cc can go through the whole dxf file and spit out data to file output
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| − | * Done basic testing with circle, ellipse, polygons, lwpolyline. files from openscad testdata/dxf.
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| − | ** Found the correct geometry.
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| − | ** coordinates of the vertices are correct.
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| − |
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| − | ===June 25th===
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| − | * Randomly picking files from openscad/testdata/dxf to check geometry and coordinates.
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| − | * Trying to figure out if the data structure is actually storing the correct data.
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| − |
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| − | ===June 26th===
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| − | * Trying to extract data from the data structure to test if it's reading correct data.
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| − | ** For circle, extract cirlce_pts.
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| − | ** For line, extract line_pts.
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| − | ** For lwpolyline, extract polyline_vertice.
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| − | ** For elllipse, center and majorAxis
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| − | ** For point, pt.
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| − |
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| − | ===June 27th===
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| − | * More data extracting continue from yesterday.
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| − | * Try to start integrating openscad and dxf-g.cc just for circle entities.
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| − |
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| − | ===June 28th===
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| − | * Run openscad together with dxf-g.cc.
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| − | * Implemented circle entities using dxf-g.cc called a openscad function.
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| − | ** Later the day discussion concluded that this is not the preferred way. deprecated.
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| − |
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| − | ==July==
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| − | ===July 1st===
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| − | * Added structs for each geometry for storing the data.
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| − | * Some minor fixes for original data type point_t.
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| − | ===July 2nd===
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| − | * storing all the data parsed to the respect vectors.
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| − | ** Except polyline is a bit tricky, not done yet.
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| − |
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| − | ===July 3rd===
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| − | * Added polyline struct and the storing part.
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| − | * Added code for passing circle entity information to openscad and openscad draw it.
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| − | ** Having trouble with compilation.
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| − |
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| − | ===July 4th===
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| − | * Added arc, line, points, lwpolyline.
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| − | ** Still have some problems with lwpolyline.
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| − | ===July 5th===
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| − | * fix lwpolyline.
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| − | * Added ellipse.
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| − | * Found problem with mesh.
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| − |
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| − | ===July 8th===
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| − | * Trying to fix mesh
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| − |
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| − | ===July 9th===
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| − | * Change the structure of the entire code to use the code of dxfdata to fix the mesh problem
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| − | * The code still not able to produce the correct polygon yet.
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| − | ===July 10th===
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| − | * Fix the mesh problem and now the code can properly import a single dxf file.
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| − | ** For some reason, the data is store and fill in the next polygon if the second dxf is imported.
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| − |
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| − | ===July 11th===
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| − | * Fix the data leakage between document.
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| − | * Now the code is passing all the test file except nothing decimal comma and transform insert.
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| − | ** the reader has an issue with insert entity
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| − |
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| − | ===July 12th===
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| − | * Trying to figure out how to fix the insert.
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| − | * Learning the insert spec from dxf manual
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| − |
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| − | ===July 14th===
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| − | * Fix the block list and curr_block is not storing value properly
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| − | * There is an infinite loop caused by the file offset in the process_enitites_unknown
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| − | ** It jumps to the previous line but does not jump back
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| − | * Continue on fixing insert
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| − |
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| − | ===July 15th===
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| − | * Clean up most of the commented code in dxf.cc and dxf.h
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| − | * fix the curr_block memory issue by using a global variable indx that indicate the position of the block in block_list
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| − | * Continue on fixing insert
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| − |
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| − | ===July 16th===
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| − | * Adding back_file_offset to state_data to have the program jump back
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| − | ** Still getting the wrong result, the geometries are scattered but shapes are the same.
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| − | * Continue on fixing insert
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| − |
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| − | ===July 17th===
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| − | * replace all memory allocation function related to insert with new and delete
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| − | ** valgrind now output no error or warning
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| − | * Continue on fixing insert
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| − |
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| − | ===July 18th===
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| − | * Download and build brlcad to test out what's the difference and if it can output the correct result
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| − | ** There is no problem with the curr_state->file_offset
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| − | * Continue on fixing insert
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| − |
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| − | ===July 19th===
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| − | * Found that the brlcad xform is different than my version.
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| − | ** Can't figure out why it's different
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| − | * Continue on fixing insert
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| − |
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| − | ===July 20th===
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| − | * Found the BU_LIST_POP actually assign curr_state to the last element of the list
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| − | ** This fix the infinity loop and remove back_file_offset.
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| − | * Continue on fixing insert
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| − |
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| − | ===July 21st===
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| − | *By switching the push_back and new_state = curr_state this fix the xform problem.
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| − | ** Insert is fixed but it looks there is an issue with different compiler
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| − |
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| − | ===July 22nd===
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| − | *Cleaning up dxf.cc, import-dxf.cc, dxf.h.
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| − |
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| − | ===July 23rd===
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| − | *Finished cleaning up dxf.cc, import-dxf.cc, dxf.h.
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| − | * Make [https://github.com/openscad/openscad/pull/3005 #pr3005] to test in various platform.
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| − |
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| − | ===July 24th===
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| − | *Fix scale, xyorigin, layername problem.
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| − | *Test result [https://github.com/openscad/openscad/pull/3006]
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| − |
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| − | ===July 25th===
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| − | * Starting working on spline entity.
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| − | * Reading spline related code on QCAD.
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| − | * Learning dxf spline entity spec.
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| − |
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| − | ===July 26th===
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| − | * QCAD is using an external library opennurbs to deal with the spline.
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| − | * Reading spline related code on BRL-CAD.
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| − | ** BRL-CAD code can be implemented on openscad.
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| − |
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| − | ===July 29th===
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| − | * Replicate and integrate brlcad spline code to openscad.
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| − |
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| − | ===July 30th===
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| − | * Continue integrating blrcad spline code to openscad.
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| − |
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| − | ===July 31st===
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| − | * Testing brlcad code with openscad, comparing with brlcad and qcad.
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| − | ** Creating test cases using AutoCAD.
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| − | ** Both brlcad and qcad seems to not supporting the spline created by autocad properly due to dxf version problem.
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| − | ** brlcad encounter segmentation fault with one of the spline test cases.
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| − |
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| − | ==August==
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| − |
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| − | ===August 1st===
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| − | * Switch to reading LibreCAD spline related code.
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| − | ** LibreCAD 2.x version is using their own code.
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| − | * Also reading openscad bezier curve related code.
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| − |
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| − | ===August 2nd===
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| − | * LibreCAD can handle the spline created by autocad unlike brlcad and qcad.
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| − | * OpenSCAD code can handle degree 2, 3 normal spline(Beizer curve) properly.
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| − | ** Starting adding openscad code to import_dxf.
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| − |
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| − | ===August 3rd===
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| − | * Modified openscad code and integrated it to import_dxf.
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| − |
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| − | ===August 4th===
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| − | * Testing the spline import of openscad
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| − | ** Able to import 3 control points for degree 2 spline and 4 for degree 3 spline.
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| − | ** Fail to generate continuous bezier curve.
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| − |
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| − | ===August 5th===
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| − | * Trying to figure an algorithm or a way to generate continuous bezier curve like this [https://www.algosome.com/articles/continuous-bezier-curve-line.html article].
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| − |
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| − | ===August 6th===
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| − | * OpenSCAD is now able to import degree 1-3 spline with certain numbers of control points.
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| − | ** spline knots, weights, fit points are ignored.
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| − |
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| − | ===August 7th - 14th===
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| − | * Family trip.
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| − | * Originally from 7th-12th, due to the riots in Hong Kong airport and the typhoon in Osaka, flight got cancelled and delayed. ** Due to the typhoon, updated flight time is 16th.
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| − |
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| − | ===August 15th===
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| − | * Starting working on polyline entity.
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| − |
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| − | ===August 16th===
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| − | * Rearrange code and fix error in storing polyline vertex in the importer.
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| − | * On the flight home
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| − |
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| − | ===August 17th===
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| − | * Integrate 2D polyline entity to openscad ignoring 3D polyline features and curve-fit.
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| − |
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| − | ===August 18th===
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| − | * Improve polyline with the spline-fit flag, can generate by both spline vertex and control points.
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| − | * Test polyline.
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| − | * Add test cases to the test suite.
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