Review Request 119621: Support for Geogebra's intersections and constrained points in kig ( GSoC 14 )

Aniket Anvit seeanvit at gmail.com
Sat Aug 9 13:44:21 UTC 2014


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https://git.reviewboard.kde.org/r/119621/
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(Updated Aug. 9, 2014, 7:14 p.m.)


Review request for KDE Edu and David Narváez.


Changes
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Added support for Loci. Currently the behaviour is not perfect. Some Loci open fine while some are leading to crash. Those Loci which are opening are not having cent percent correct dependencies. I am onto fixing this. 


Repository: kig


Description
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Line-Line intersection is perfect and simple to implement with the existing model. Other Intersections are a bit challenging since they output more than one object (point) unlike the other commands ( which output just one object).
LineConic, Circle-Circle intersections seem fine to me but I have some trouble in understanding whether my approach is correctly assigning the output-label to the obtained intersection points ( while filling the m_objectMap). Please check whether the IntImp parameter I am passing to the IntersectionTypes is correct or not. ConicConic Intersections produce 4-points sometimes and they have been implemented as Line-Conic intersections in Kig. So, we have to find the Radical-Lines of the conics first before finding the intersection-points. Currently , there is an issue that the Radical-lines are also added to the document ( while they should not be ), but this should be simple to take care (If you give the go-ahead to this approach). 

Constrained points are must for Locus. I have implemented them , but the extra-handling required is making things a little ugly.
Locus is under progress...


Diffs (updated)
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  geogebra/geogebra.xsl 4150e90 
  geogebra/geogebratransformer.h 5f36827 
  geogebra/geogebratransformer.cpp aee8669 

Diff: https://git.reviewboard.kde.org/r/119621/diff/


Testing
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I ran some basic tests for all the intersection cases which have been implemented. Seem ok. Only issue is with the conic-conic intersection case where we get the additional ConicRadical Lines which should be visible in Kig. However, this should be easy to take care of if this implementation survives.


Thanks,

Aniket Anvit

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