Latest revision |
Your text |
Line 391: |
Line 391: |
| | | |
| * A picture for the rt_hrt_export5 test on archer interface can be viewed [http://brlcad.org/~Izak/Export_test.png here]. | | * A picture for the rt_hrt_export5 test on archer interface can be viewed [http://brlcad.org/~Izak/Export_test.png here]. |
− |
| |
− | August 8
| |
− |
| |
− | * Have been granted commit access. :)
| |
− |
| |
− | * Learned how to use svn commit, svn revert, etc.
| |
− |
| |
− | * Ensured consistent bu_log("rt_hrt_xxx: not implemented yet!\n"); in calllbacks functions for hrt.c and committed to [http://sourceforge.net/p/brlcad/code/56694/ r56694].
| |
− |
| |
− | =August 12th to August 17th=
| |
− |
| |
− | August 12th
| |
− |
| |
− | * Added hrt_invsq vector and hrt_invRSSR matrix to the heart structure in [https://sourceforge.net/p/brlcad/code/56745/ r56745].
| |
− |
| |
− | * Added rt_hrt_print() routine and removed rt_hrt_??port4() routines pertaining to version 4 of database in [https://sourceforge.net/p/brlcad/code/56746/ r56745].
| |
− |
| |
− | * Added rt_hrt_import5() routine to import the database format to the internal format in [https://sourceforge.net/p/brlcad/code/56747/ r56747].
| |
− |
| |
− | * Added rt_hrt_export5() routine to export from internal format to database format in [https://sourceforge.net/p/brlcad/code/56751/ r56751]
| |
− |
| |
− | August 13th
| |
− |
| |
− | * Went to the Cameroon GCE Board office to apply for duplicate certificate for my younger sister.
| |
− |
| |
− | * Wrote rt_hrt_describe() routine to present the heart solid in human-readable format and committed changes to [http://sourceforge.net/p/brlcad/code/56791/ r56791].
| |
− |
| |
− | * Pictures to demonstrate the working rt_hrt_describe() function using the l command in the mged and archer interfaces can be viewed [http://brlcad.org/~Izak/rt_hrt_describe_mged.png here] and [http://brlcad.org/~Izak/rt_hrt_describe_archer.png here] respectively.
| |
− |
| |
− | August 14th
| |
− |
| |
− | * Working on rt_hrt_prep() routine but electric blackouts in my area halted work.
| |
− |
| |
− | August 15th
| |
− |
| |
− | * Compiled hrt.c after writing rt_hrt_prep(). This routine calls rt_hrt_bbox() routine (which I am still to work on ) and some testing using the rt command. Will commit [http://paste.kde.org/p20fbe4c6/ rt_hrt_prep()] later.
| |
− |
| |
− | * Worked on rt_hrt_ifree() to free the storage associated with the rt_db_internal version of this solid and commited to [https://sourceforge.net/p/brlcad/code/56876/ r56876].
| |
− |
| |
− | August 16th
| |
− |
| |
− | * Working on rt_hrt_bbox() routine which needs some testing before I commit.
| |
− |
| |
− | August 17th
| |
− |
| |
− | * Finished working on rt_hrt_bbox() routine today. Used the bb command to test this code in the [http://brlcad.org/~Izak/rt_hrt_bbox_mged_test.png mged] and [http://brlcad.org/~Izak/rt_hrt_bbox_archer_test.png archer].
| |
− |
| |
− | * Committed changes in rt_hrt_bbox() and rt_hrt_prep() routines to [http://sourceforge.net/p/brlcad/code/56917/ r56917].Will do more work on rt_hrt_prep() function eventually.
| |
− |
| |
− | =August 19th to August 24th=
| |
− |
| |
− | August 19th
| |
− |
| |
− | * Corrected spelling of polynomial in bn_poly_synthetic_div.c in [http://sourceforge.net/p/brlcad/code/56944 r56944].
| |
− |
| |
− | * Wrote the rt_hrt_free() and rt_hrt_params() functions in [http://sourceforge.net/p/brlcad/code/56947/ r56947].
| |
− |
| |
− | * Still working on rt_hrt_prep().
| |
− |
| |
− | August 20th
| |
− |
| |
− | * Modified rt_hrt_prep() function and commited it to [https://sourceforge.net/p/brlcad/code/57004/ r57004].
| |
− |
| |
− | August 21st
| |
− |
| |
− | * Working on rt_hrt_shot(). Still to commit.
| |
− |
| |
− | * Modified comment to add new constant in rt_hrt_prep() in [http://sourceforge.net/p/brlcad/code/57023/ r57023] and [http://sourceforge.net/p/brlcad/code/57035/ r57035].
| |
− |
| |
− | August 22nd
| |
− |
| |
− | * Modifying a comment by punctuating the word primitive in super ellipsoid primitive and commited to [http://sourceforge.net/p/brlcad/code/57058/ r57058].
| |
− |
| |
− | * Understanding how to write the rt_???_shot() function for primitives.
| |
− |
| |
− | * Adding rt_hrt_shot to intersect a ray with the heart in [http://sourceforge.net/p/brlcad/code/57068/ r57068].
| |
− |
| |
− | * Tests in the mged using the 'rt' command givers this [http://brlcad.org/~Izak/rt_shot_test.png result].
| |
− |
| |
− | August 23rd
| |
− |
| |
− | * Removed unused variable polycurve and fixed function declarations in pc header
| |
− | and committed to [http://sourceforge.net/p/brlcad/code/57097/ r57097].
| |
− |
| |
− | * Added rt_hrt_norm() function which Computes the normal to the heart given a point on the heart in [http://sourceforge.net/p/brlcad/code/57100/ r57100].
| |
− |
| |
− | =August 26th to August 31st=
| |
− |
| |
− | August 26th
| |
− |
| |
− | * Experiencing an infection in my left eye so could not work throughout the weekend until today.Couldn't work with one eye.
| |
− |
| |
− | August 27th
| |
− |
| |
− | * Researching on solving sextic equations. Found an interesting paper by Titus Piezas III.
| |
− |
| |
− | * Correcting sextic equation in comment preceeding rt_hrt_shot() implementation in [http://sourceforge.net/p/brlcad/code/57180/ r57180].
| |
− |
| |
− | August 28th
| |
− |
| |
− | * Reading papers by Piezas and Thomas Hagerdon to come out with algorithm to write bn_poly_sextic_roots.c.
| |
− |
| |
− | August 29th - 30th
| |
− |
| |
− | * Consulting mathematician Titius Piezas for advice on how to solve the sextic equation for rt_hrt_shot() to do ray tracing. Piezas says the equation is solvable using numerical solutions with arbitrary accuracy but is not solvable with respect to radicals in Galois theory.
| |
− |
| |
− | August 31st
| |
− |
| |
− | * Researching on root-finding algorithms which can be used to write bn_poly_sextic_roots.c
| |
− |
| |
− | * Working on rt_hrt_plot to plot the heart.
| |
− |
| |
− | =September 2nd to September 7th=
| |
− |
| |
− | September 5th
| |
− |
| |
− | * Working on roots_example.c to incorporate test for sextic equation.
| |
− |
| |
− |
| |
− | September 6th
| |
− |
| |
− | * Changed 4 to BN_MAX_POLY_DEGREE in roots_example.c to avoid any further confusions in [http://sourceforge.net/p/brlcad/code/57469 r57469]. roots_example.c actually solves a sextic equation now.
| |
− |
| |
− | * Solved the implicit heart equation with x=y=z in order to substitute into the rt_hrt_shot sextic equation and use in roots_example.c
| |
− |
| |
− | * Running rt command on a hrt object. Picture can be viewed [http://brlcad.org/~Izak/heart.png here].
| |
− |
| |
− | September 7th
| |
− |
| |
− | * Produced a [http://brlcad.org/~Izak/Movie.odp slideshow] from images produced after running the 'rt' command on a heart object.
| |
− |
| |
− | =September 9th to September 14th=
| |
− |
| |
− | September 9th
| |
− |
| |
− | * Getting my feet wet with plotting in the mged/archer interface :)
| |
− |
| |
− | September 10th
| |
− |
| |
− | * Fixed the orientation of the heart and invalid implicit equation in rt_hrt_shot() in [http://sourceforge.net/p/brlcad/code/57533/ r57533].
| |
− |
| |
− | * Getting better results from rt_hrt_shot in this [http://brlcad.org/~Izak/Heart.mpg Heart movie].
| |
− |
| |
− | * Observing the rt_ell_plot() functions to see how the rt_hrt_plot() can be written.
| |
− |
| |
− | September 14th
| |
− |
| |
− | * Corrected rt_hrt_bbox() by Stretching the xdir vector to accommodate the heart and rt_hrt_norm() by Correcting Z component of the normal vector (partials of sextic equation) in [http://sourceforge.net/p/brlcad/code/57653/ r57553].
| |
− |
| |
− | =September 16th to September 21st=
| |
− |
| |
− | September 16th
| |
− |
| |
− | * Had an entretien with my University's Vice- Chancellor and dean of Faculty of Engineering today talking about Summer of Code and approaching Doc Camp .
| |
− |
| |
− | * Wrote a private helper function rt_hrt_24pts() for rt_hrt_plot(). Have written code to get 2 iso-contours. Still working on some bugs in archer.
| |
− |
| |
− | September 17th
| |
− |
| |
− | * Following the stack trace which Sean opened my eyes to on IRC.
| |
− |
| |
− | September 18th
| |
− |
| |
− | * Fixed the bumpy areas on the heart by correcting some code in rt_hrt_norm() in [http://sourceforge.net/p/brlcad/code/57728/ r57728].
| |
− |
| |
− | September 20th
| |
− |
| |
− | * Corrected the rt_hrt_norm() function so that the default trace shouldn't be doing from high specular to dark shadows in [http://sourceforge.net/p/brlcad/code/57780/ r57780].
| |
− |
| |
− |
| |
− | =GSoC 2013 summary=
| |
− |
| |
− | For the past quarter, I've been implementing a heart primitive for the BRL-CAD package. This project focused on writing and testing callback functions in the ray tracing library for the aforementioned primitive.You are invited to read my diary on http://brlcad.org/wiki/User:Izak/GSOC_2013_logs.
| |
− |
| |
− | Despite the challenges I encountered such as the lack of Internet connectivity for over 5 weeks before the mid-term evaluation period, I hooked the heart primitive into the BRL-CAD source by adding a magic number for the heart in include/magic.h and src/libbu/magic.c, stubbing an empty heart in include/db5.h, include/rtgeom.h, include/raytrace.h,src/librt/db5_types.c,src/librt/primitives/table.c and src/librt/primitives/hrt/hrt.c as well as adding typing support for the heart in the mged interface in include/wdb.h,src/libwdb/wdb.c and src/libged/typein.c.
| |
− |
| |
− | After the mid-term evaluations,I implemented ray tracing callback functions for serialization (rt_hrt_??port), textual description (rt_hrt_describe, rt_hrt_print) and ray tracing (rt_hrt_prep, rt_hrt_shot and rt_hrt_norm).I also wrote a test to ensure that BRL-CAD's root solver is stable for sextic equations and after consulting some mathematicians, I learned that the heart's sextic equation cannot be solved in radicals -- A pointer to which method does not work :). Feel free to download a heart animation from http://brlcad.org/~Izak/HeartImages/Heart.mpg. You can also look at images of the heart from 360 different angles using http://brlcad.org/~Izak/HeartImages/
| |
− |
| |
− | As GSoC 2013 comes to an end, my passion to continuously contribute to the open source community grows. I intend to finish the callbacks functions for the heart primitive and hook the heart to the mged and archer interfaces so the heart gets into the next BRL-CAD release :)
| |
− |
| |
− | Feeling Great! :)
| |