def __init__(self, inputDir, outputDir, batchSize):
self.outputDir = outputDir
self.batchSize = batchSize
self.parser = FargoParser(inputDir, batchSize)
secondaryOrbit = np.loadtxt(inputDir + "/planet0.dat")
secondaryX = secondaryOrbit[:, 1]
secondaryY = secondaryOrbit[:, 2]
self.secondaryRadius = np.sqrt(np.add(np.square(secondaryX), np.square(secondaryY)))
self.secondaryTheta = np.arctan2(secondaryY, secondaryX)
params = self.parser.getParams()
self.params = params
self.outputDir = outputDir
