Things are starting to move

we are getting more comfortable with "new" software engineering technologies

• Continuous Integration (CI)
• Git Pull Requests (PR)
• CMake
• Boost Test
• Google Benchmark
• Modern C++

Still kind of slowly though

New rules to learn ...

New rules to discuss ;-)

(Pieces of) Reconstruction

1st versions in AliceO2 repo

• mch preclustering
• mch mapping (segmentation) PR 866
• mid clustering PR soon

(Pieces of) Simulation

• mch geometry porting : work started

Still a long way to go

... if we compare to the work plan

A sample of work "done" :

MCH mapping redux

Self-contained Mapping

No more OCDB (or ASCII) files to be loaded.

You load the library, you get the mapping.

int detElemId{100}; bool isBendingPlane{true};

o2::mch::mapping::Segmentation seg{detElemId, isBendingPlane};

double x{1.5}; double y{18.6};

int paduid = seg.findPadByPosition(x, y);

if (seg.isValid(paduid)) {
  std::cout << "There is a pad at position " << x << "," << y << "\n"
            << " which belongs to dualSampa " << seg.padDualSampaId(paduid)
            << " and has a x-size of " << seg.padSizeX(paduid) << " cm\n";
}

assert(paduid == seg.findPadByFEE(76, 9));

Collateral Improvements

• Debugging the mapping requires some sort of visualisation
• Used a web techno : SVGs
• A first step toward mchview-in-a-browser

> mch-mapping-svg-segmentation3 --help
Generic options:
  --help                produce help message
  --hidepads            hide pad outlines
  --hidedualsampas      hide dualsampa outlines
  --hidedes             hide detection element outline
  --hidepadchannels     hide pad channel numbering
  --de arg              which detection element to consider
  --prefix arg (=seg)   prefix used for outfile filename(s)
  --point arg           points to show
  --all                 use all detection elements
> mch-mapping-svg-segmentation3 --hidepadchannels --hidepads --de 501
> open seg-501-B.html

• A SVG is a web document.
• Can be styled using CSS.
• Rendered by the browser. No rendering code to write !

<g class="dualsampas">
<polygon points="40,-4 40,-20 45,-20 45,-4 40,-4 "/>
<polygon points="45,-4 45,-20 50,-20 50,-4 45,-4 "/>
<polygon points="50,-4 50,-20 55,-20 55,-4 50,-4 "/>
...

.detectionelements { fill: none; stroke: yellow; stroke-width: 0.5; } 
.dualsampas { fill: black; stroke: gray; stroke-width: 0.25; opacity: 0.2; }

or