displaydata.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
 
 
 
# This example demonstrates showing user-defined things using DisplayData
 
import basf2 as b2
 
from ROOT import Belle2
from ROOT import TVector3
import ROOT
 
 
class DisplayDataTest(b2.Module):
    """Test DisplayData"""
 
    def initialize(self):
        """reimplementation of Module::initialize()."""
 
        Belle2.PyStoreObj("DisplayData").registerInDataStore()
 
    def event(self):
        """reimplementation of Module::event()."""
 
        displayData = Belle2.PyStoreObj("DisplayData")
        displayData.create()
 
        # you can put a label at arbitrary points
        displayData.obj().addLabel("Origin", TVector3(0, 0, 0))
 
        # or simple points (grouped into sets)
        for i in range(10):
            displayData.obj().addPoint("set 1", TVector3(15, 15, 10 * i))
        for i in range(10):
            displayData.obj().addPoint("set 2", TVector3(10 * i, 0, 50))
 
        # you can add arrows
        pos = TVector3(0, 0, 100)
        displayData.obj().addArrow("x", pos, pos + TVector3(50, 0, 0))
        displayData.obj().addArrow("y", pos, pos + TVector3(0, 50, 0))
        displayData.obj().addArrow("z", pos, pos + TVector3(0, 0, 50))
 
        displayData.obj().addArrow("z=-2m", TVector3(100, 100, -200), TVector3(0, 0, -200), ROOT.kGray)
 
        # highlight the first MCParticle
        mcparticles = Belle2.PyStoreArray('MCParticles')
        part = mcparticles[0]
        if part is not None:
            displayData.obj().select(part)
 
 
# register necessary modules
eventinfosetter = b2.register_module('EventInfoSetter')
eventinfosetter.param('evtNumList', [500])
 
 
# create geometry
gearbox = b2.register_module('Gearbox')
geometry = b2.register_module('Geometry')
geometry.param('components', ['CDC', 'MagneticField'])
 
particlegun = b2.register_module('ParticleGun')
particlegun.param('nTracks', 4)
 
 
# simulation
g4sim = b2.register_module('FullSim')
# make the simulation less noisy
g4sim.logging.log_level = b2.LogLevel.ERROR
 
# create paths
main = b2.create_path()
 
# add modules to paths
main.add_module(eventinfosetter)
 
main.add_module(gearbox)
main.add_module(geometry)
main.add_module(particlegun)
# main.add_module(g4sim)
 
main.add_module(DisplayDataTest())
 
# default parameters
display = b2.register_module('Display')
display.param('showAllPrimaries', True)
main.add_module(display)
 
b2.process(main)
print(b2.statistics)