This page is a diary dedicated to the work I have been honored to do with LibreCAD this Google Summer of Code 2015 period.

• Celebrated my acceptance into Google Summer of Code 2015 with my friends at the Limbe Semme beach

• Getting to know other students in Buea selected for GSoC.

• Updated my repository on github.

• Filled Student Foreign Certification Tax Form

• Discussed with my mentors the possibility of a wire transfer for work during the bonding period. No channels were open apart from Paypal.

• Updated my repository on github

• Looked at the lc_splinepoints code in librecad/src/lib/engine/lc_splinepoints.*

• Worked feverishly and biased my efforts on my final year Management project ( meetings with supervisor, Writing Theoretical and Literature review, conceiving and administering questionnaires, etc ) which ate up the next fortnight.

• The intention was to go furthest as possible with Final year School Project so that when GSoC coding begins, I can concentrate more on my LibreCAD project.

• Discovered a Paypal account at the end of the Community bonding period.

• Had a meeting with Women Techmakers Arm of GDG Buea organizing upcoming Google I/0 Extended 2015 at my University.

• Reading Documentation on Conics Sections in LibreCAD given to me by my mentor Dongxu Li.

• Hurray! My Google Summer of Code finally package arrived my University today and I was called to come and collect it.

• Had a meeting with the Mentor for Google Developer Groups in Cameroon. He cautioned me on the importance of communication and daily coding on my project.

• Almost done with my Final year Research Project.Was working on corrections given by my supervisor the whole day.

• Updated my github repository today.

• Synced my github repository with LibreCAD's.

• Installed and ran LibreCAD from source.

• Studying RS_Ellipse::getTangentPoint() and LC_SplinePoints::getTangentPoint() to help create RS_Hyperbola::getTangentPoint().

• Hyperbolas are unbounded and disconnected too. Investigating how finding the tangential points of splines can help the case of hyperbolas.

• Read articles by www.qcad.org on splines. Each branch or arm of a hyperbola can be seen as an open quadratic spline.

• Discussed with my mentor in IRC today and he gave me wiki link for LibreCAD.

• Re-established contact with my co-mentor Ries.

• Discussed with mentor dli_ on #librecad.

• Understood what class RS_VectorSolutions is.

• Working on math algorithm for finding tangential points from a given point outside a hyperbola.

• Awaiting mentors' response to my question on IRC channel on math algorithm.

• Using calculus to solve the above math problem. It's quite cumbersome and I'm having a hard time.

• Continued work on cumbersome algebra and calculus on tangential points to the hyperbola. I'm excited that my thinking was the same as this except that my hyperbola is centered at (xo,yo) rather than (0,0).

• Succeeded to have a general formula to obtain the intersection point (h,k) of the tangent line and the hyperbola. That was quite tedious.

• My mentor asks for Proof of concept code on a daily basis.

• Next task is implementing the math algorithm which I developed.

• Discussed my math algorithm with my mentor dli on #librecad.

• Started doing some minor changes to my LibreCAD repository today.

• Today I had my final year project defense in school.Thus, I couldn't do any work on GSoC LibreCAD project today.

• Studying lc_splinepoints code to finish writing the getTangentPoint of a hyperbola

• Developed a heuristic to solve the getTangentPoint() of a hyperbola.

• Emailed the paste to my mentors for review.

• Awaiting my mentors review of the heuristic before proceeding.

• Attended the Silicon Mountain Conference today.

• Adjusting the getTangentialPoints() algorithm for a unit hyperbola based on my mentor's corrections.

• Sent adjustments to getTangentpoint() member function algorithm over to my mentor for review.

• Been having discussions with my mentor on code snippets like this. Hustling towards a working prototype.

• Showed my mentor some code snippets that compile today.

• My mentor gave feedback and corrections to the code snippet I tunrned in yesterday.

• Have done some corrections to the code snippet.

• My mentor proposed a much more concise and maintainable algorithm which I'm incorporating into the Hyperbola code.

• LibreCAD Build is broken. Downloading Qt5 to run LibreCAD with while Lead developers fix this issue.

• Upgraded to qmake-qt5, updated my LibreCAD repository and build it.

• Awaiting review from my mentor for the improved the code snippet.

• Did not do any work today due to housekeeping.

• More critique on code from my mentor.

• Improved code based on corrections discussed on IRC.

• Chatted a little with brlcad on #brlcad and ries on #librecad today.

• Today was a lazy day for me. Did not code.

• After a deeper look at my logic of getTangentPoint(), I overhauled my code to have this.

• My mentor has confirmed that my logic is a step int the right direction and has suggested that I use github and email more including IM/IRC.

• Starting to design unit tests for this getTangentPoint() function.

• Filled Student evaluation form today.

• Working on unit test for getTangentPoint() member function.

• Some work in progress available here

• Sick day:I have not been able to do any work because of the symptoms of malaria I've been experiencing since morning.

• I've developed the unit tests for the getTangentPoint() in librecad/src/main.cpp and LibreCAD builds well.

• Next step is running the code to see the results from the function.

I was rather off to a slow start for GSoC 2015 coding due to my final year management project. However, I've written the getTangentPoint() member function for the LC_Hyperbola and I am currently designing appropriate test cases to ascertain the effectiveness of getTangentPoint() function. When I've perfected these test cases, anyone will be able to run these tests after compiling LibreCAD by ./lc on the command line in the unix/ directory.

• Sick day: Have not done any work today. Currently on medications.

• Managed to post my pre midterm evaluation summary to my development logs, BRL-CAD mailing list and cc'ing my mentors in LibreCAD and BRL-CAD.

• Updated my LibreCAD repositories too.

• Sick day: Haven't been able to do any work due to illness.