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| | [[File:rhc_brep_bottom_v1.png|300px]] | | [[File:rhc_brep_bottom_v1.png|300px]] |
| | [[File:rhc_brep_bottom_v1_rt.png|300px]] | | [[File:rhc_brep_bottom_v1_rt.png|300px]] |
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| | for picture 1, the left obj is rhc primitive, the right is rhc_brep | | for picture 1, the left obj is rhc primitive, the right is rhc_brep |
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| − | ==Monday, August 15, 2022==
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| − | * Sleuthing on the math about Casteljau algorithm and nurbs of source code.
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| − | for Casteljau algorithm: https://pages.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/de-casteljau.html
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| − | for nurbs of order 2 with weight,the answer is correct if we multiply the original coordinates of control point 2 by the factor 1/w2.
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| − | * Debug rhc bottom drawing by changing the weight of second control point.
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| − | ==Tuesday, August 16, 2022==
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| − | Begin debugging epa primitive brep converting.
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| − | * Test to convert epa into brep format in different position and rotation, find the upper part stay still at the origin point.
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| − | * Look into math expression and algorithm of nurbs surface.
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| − | ==Wednesday, August 17, 2022==
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| − | * Try to pan all the control points according to epa primitive position, the nurbs surface git into chaos.
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| − | * Guess the reason is similar to the nurbs curve, look into math expression and drawing algorithm of nurbs surface.
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| − | ==Thursday, August 18, 2022==
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| − | * Look into rotating NURBS surfaces by transforming controls points.
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| − | * Try to write a transform function of NURBS surface.
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| − | ==Friday, August 19, 2022==
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| − | * Read nurbs surface source codes, find the function already done in OpenNURBS.
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| − | * Fix pan transform by caculating a pan matrix of 4x4.
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| − | * Study usage and caculation of transform matrix according to [https://sites.cs.ucsb.edu/~lingqi/teaching/resources/GAMES101_Lecture_03.pdf ppt1] and [https://sites.cs.ucsb.edu/~lingqi/teaching/resources/GAMES101_Lecture_04.pdf ppt2].
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| − | ==Saturday, August 20, 2022==
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| − | * Try to caculate the rotation matrix by rotate axis and degree according to page 10 of [https://sites.cs.ucsb.edu/~lingqi/teaching/resources/GAMES101_Lecture_04.pdf ppt2], failed.
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| − | * Find the transform can be divided into one pan and two rotation(the 1st is axis rotation, the 2rd is rotation around axis). Sleuth math expression and code. Result failed.
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| − | ==Sunday, August 21, 2022==
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| − | * Find the transform is related to coordinate systems transform, study it according to [https://stackoverflow.com/questions/34391968/how-to-find-the-rotation-matrix-between-two-coordinate-systems forum]
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| − | * Caculate and combine rotation matrix. origin shift rotation matix and pan vector, solve the epa brep converting problem.
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| − | ==Tuesday, August 23, 2022==
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| − | * sleuth the formula about hyperbola according to [https://pages.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/NURBS/RB-conics.html Rational Bézier Curves]
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| − | * sleuth the formula of drawing rhc primitive codes.(rhc.c rt_rhc_plot())
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| − | * sleuth the formula of caculating control points and weights of NURBS of hyperbola.(rhc_brep.cpp rt_rhc_brep)
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| − | ==Wednesday, August 24, 2022==
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| − | * Caculate control points and weights of hyperbola, debug hyperbola curve.[https://www.desmos.com/calculator/adbpzvkbjf reference link]
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| − | * Fix and test drawing bottom face of rhc by modify control points and weights of NURBS.
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| − | ==Thursday, August 25, 2022==
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| − | * write a shell script to test rhc primitive brep converting.
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| − | * test rhc primitive brep converting.
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| − | ==Monday, August 29, 2022==
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| − | * add a rotation for every primitive in sh/brep_primitive.sh and check whether the brep result are correct or not. --correct
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| − | * Sleuthing on the math about getting points of hyperbola.(src/librt/primitives/rhc/rhc.c rt_mk_hyperbola())
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| − |
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| − | ==Tuesday, August 30, 2022==
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| − | * reorganize brep_arbintersection function.
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| − | * add a function creating sph boolean and brep matrix.
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| − | ==Wednesday, August 31, 2022==
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| − | * solve pull request conflicts with main.
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| − | * add a function creating rcc boolean and brep matrix.
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| − | * sort out my develop branches to create pull requests. [https://github.com/BRL-CAD/brlcad/pull/56 PR56][https://github.com/BRL-CAD/brlcad/pull/57 PR57]
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| − | ==Thursday, September 1, 2022==
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| − | * add command line argument to specific primitive.
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| − | * reread ''bool_eval_development'' document.
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| − | ==Friday, September 2, 2022==
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| − | * optimize ON_Brep function (ON:Begin and ON:End) call positions.
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| − | * run dplot, brep, overlay cmds to test which commands are still available and how to debug boolean function.
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| − | ==Monday, September 5, 2022==
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| − | * locating boolean error codes. --get_face_intersection_curves function return empty while testing, it's irregular.
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| − | * config ''docbook'' to compile ''bool_eval_development''.
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| − | ==Tuesday, September 13, 2022==
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| − | * Look into and debug dplot.c.
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| − | * read ''bool_eval_development'' about dplot usage.
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| − | ==Wednesday, September 14, 2022==
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| − | * Look into and track calling stack of every sub cmd of dplot cmd.
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| − | * Use overlay function to plot boolean files, some files can't be plotted. Current version of the code can't introduce trim event.
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| − | ==Thursday, September 15, 2022==
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| − | * fix ''dplot_overlay'' function in dplot.c about passing parameters and calling overlay cmd.
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| − | ==Friday, September 16, 2022==
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| − | * erase all faces plot in the end of ''dplot * faces''.
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| − | * test overlay cmd to plot faces of one cube. Overlay can't display multiple faces of one cube at the same time.
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| − | ==September 19 to September 23==
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| − | * leave for school things and COVID-19 policy
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| − | ==Monday, September 26, 2022==
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| − | * switch the origin commit to a previous version, make sure the brep cmd will introduce face trim operation to help debug dplot cmd.
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| − | * display bool*_brep*_surface*.plot3 files instead of curves in dplot * faces
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| − | ==Tuesday, September 27, 2022==
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| − | * fix overlay all faces in ''dplot * ssx'' by using globbing.
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| − | * dplot ssx event using bool*_highlight_brep*_surface*.plot3 files instead of ssx_event*.plot3, because some ssx_event*.plot3 and clipped_curve can't be plotted using overlay cmd.
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| − | ==Wednesday, September 28, 2022==
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| − | * test to overlay bool* files created by different cases and different commits.
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| − | ==Thursday, September 29, 2022==
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| − | * Configure the docbook compilation environment on windows.
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| − | * update ''NURBS Boolean Evaluation Development Guide'' about dplot usage.
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| − | ==Friday, September 30, 2022==
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| − | * optimize files to be overlayed in dplot command.
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| − | * plot faces and bool*_ssx*_event*.plot3 using "dplot * ssx *"
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| − | ==Monday, October 3, 2022==
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| − | * Read codes about how to get trimmed face before *8a508c8f* commit.
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| − | * find why plot files can't be plotted using the overlay command. Reading codes creating and plotting them.
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