Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

►Nmumufit
CMinimizerResult	Result of minimization round
CParameter	A fittable parameter with value, error, step, and limits
CParameters	A collection of fit parameters
CAlphaScan	Scan type with inclination angles as coordinate values and a unique wavelength. Features footprint correction
CAttLimits	Attributes and limits of a fit parameter, and coupling between these properties
CBarGauss	The form factor of an elongated bar, with Gaussian profile in elongation direction
CBarLorentz	The form factor of an elongated, with Lorentz form factor in elongation direction
CBasicLattice2D	A two-dimensional Bravais lattice with no special symmetry
CBeam	An incident neutron or x-ray beam
CBin1D
CBipyramid4	A truncated bifrustum with quadratic base
CBox	A rectangular prism (parallelepiped)
CCantellatedCube	A cube, with truncation of all edges and corners, as in Croset (2017) Fig 7
CChiSquaredModule	Calculation of chi2 between two data sets
CCone	A conical frustum (cone truncated parallel to the base) with circular base
CConstantBackground	Constant background, to be added to simulated scattering
CConstKBinAxis	Axis with fixed bin size in sin(angle) space
CCosineRippleBox	The form factor for a cosine ripple, with box profile in elongation direction
CCosineRippleGauss	The form factor for a cosine ripple, with Gaussian profile in elongation direction
CCosineRippleLorentz	The form factor for a cosine ripple, with Lorentz form factor in elongation direction
CCrystal	A crystal structure, defined by a Bravais lattice, a basis, and a position variance
CCustomBinAxis	Axis with fixed bin size in sin(angle) space used for numerical comparison with IsGisaxs. The main feature of the axis is that it produces zero bin sizes
CCylinder	A circular cylinder
CDatafield	Stores radiation power per bin
CDepthProbeSimulation	Simulation of radiation depth profile
CDetectorMask	Collection of detector masks
CDirection	A direction in three-dimensional space
CDistributionCosine	Cosine distribution
CDistributionGate	Uniform distribution function with half width hwhm
CDistributionGaussian	Gaussian distribution with standard deviation std_dev
CDistributionLogNormal	Log-normal distribution
CDistributionLorentz	Lorentz distribution with half width hwhm
CDistributionTrapezoid	Trapezoidal distribution
CDodecahedron	A regular dodecahedron
CEllipse	An ellipse, for use in detector masks
CEllipsoidalCylinder	A cylinder with elliptical base
CFixedBinAxis	Axis with fixed bin size
CFootprintGauss	Gaussian beam footprint
CFootprintSquare	Rectangular beam footprint
CFrame	Holds one or two axes
CFuzzySphere	A sphere with gaussian radius distribution
CGaussSphere	The form factor of a Gaussian sphere
CHemiEllipsoid	An hemi ellipsoid, obtained by truncating a full ellipsoid in the middle plane spanned by two principal axes
CHexagonalLattice2D	A two-dimensional Bravais lattice with hexagonal symmetry
CHollowSphere	Integrated full sphere form factor over a uniform distribution of radii
CHorizontalCylinder	A circular cylinder
CHorizontalLine	An infinite horizontal line
CIBackground	Abstract base class for background noise, to be added to simulated scattering
CIChiSquaredModule	Interface residual calculations
CIcosahedron	A regular icosahedron
CIdentityRotation	The identity rotation, which leaves everything in place
CIDetector	Abstract detector interface
CIDetectorResolution	Interface for detector resolution algorithms
CIFootprintFactor	Abstract base for classes that calculate the beam footprint factor
CIIntensityFunction	Interface for applying arbitrary function to the measured intensity
CIInterference	Abstract base class of interference functions
CIMinimizer	Abstract base class for all kind minimizers
CIntensityFunctionLog	Algorithm for applying log function to the measured intensity
CIntensityFunctionSqrt	Algorithm for applying sqrt function to the measured intensity
CInterference1DLattice	Interference function of a 1D lattice
CInterference2DLattice	Interference function of a 2D lattice
CInterference2DParaCrystal	Interference function of a 2D paracrystal
CInterference2DSuperLattice	Interference function of a 2D superlattice with a configurable interference function for each lattice site
CInterference3DLattice	Interference function of a 3D lattice
CInterferenceFinite2DLattice	Interference function of a finite 2D lattice
CInterferenceFinite3DLattice	Interference function of a finite 3D lattice
CInterferenceHardDisk	Percus-Yevick hard disk interference function
CInterferenceNone	Default interference function (i.e. absence of any interference)
CInterferenceRadialParaCrystal	Interference function of radial paracrystal
CInterferenceTwin	Interference function for two particles at a mean distance and given standard deviation from each other in a given direction. TODO: RENAME (has nothing to do with crystallographic twin)
CIOFactory	Provides users with possibility to read and write IntensityData from/to files in different format. Type of the file will be deduced from file name. .txt - ASCII file with 2D array [nrow][ncol], layout as in numpy. .int - BornAgain internal ASCII format. .tif - 32-bits tiff file. If file name ends with ".gz" or "*.bz2" the file will be zipped on the fly using appropriate algorithm
CIResolutionFunction2D	Interface providing two-dimensional resolution function
CISelectionRule	Abstract base class for selection rules
CIShape2D	Basic class for all shapes in 2D
CISimulation	Abstract base class, holds the infrastructure to run a simulation
CISimulation2D	Abstract base class of simulations that generate 2D patterns
CIterationInfo	Stores fit iteration info to track fit flow from various observers. Used in context of FitObjective
►CLattice2D	A two-dimensional Bravais lattice
CReciprocalBases
CLattice3D	A Bravais lattice, characterized by three basis vectors, and optionally an ISelectionRule
CLayer	A layer in a MultiLayer sample
CLayerRoughness	A roughness of interface between two layers
CLine	A line segment, for use in detector masks
CLongBoxGauss	The form factor for a long rectangular box
CLongBoxLorentz	The form factor for a long rectangular box
CMaskPattern
CMaterial	A wrapper for underlying material implementation
CMesoCrystal	A particle with a crystalline inner structure, made of smaller particles, and an outer shape described by a particle form factor
CMultiLayer	Our sample model: a stack of layers one below the other
COffspecSimulation	Off-specular scattering simulation
CParameterDistribution	A parametric distribution function, for use with any model parameter
CParameterSample	A parameter value with a weight, as obtained when sampling from a distribution
CParticle	A particle with a form factor and refractive index
CParticleComposition	A composition of particles at fixed positions
CParticleCoreShell	A particle with a core/shell geometry
CParticleLayout	Decorator class that adds particles to ISampleNode objects
CPlatonicOctahedron	A truncated bifrustum with quadratic base
CPlatonicTetrahedron	A frustum with equilateral trigonal base
CPoissonBackground	Poisson distributed noise, to be added to simulated scattering
CPolygon	A polygon, for use in detector masks
CPrism3	A prism based on an equilateral triangle
CPrism6	A prism based on a regular hexagonal
CProfile1DCauchy	Exponential IProfile1D exp(-\|omega*x\|); its Fourier transform standardizedFT(q) is a Cauchy-Lorentzian starting at standardizedFT(0)=1
CProfile1DCosine	IProfile1D consisting of one cosine wave [1+cos(pi*x/omega) if \|x\|<omega, and 0 otherwise]; its Fourier transform standardizedFT(q) starts at standardizedFT(0)=1
CProfile1DGate	Square gate IProfile1D; its Fourier transform standardizedFT(q) is a sinc function starting at standardizedFT(0)=1
CProfile1DGauss	Gaussian IProfile1D; its Fourier transform standardizedFT(q) is a Gaussian starting at standardizedFT(0)=1
CProfile1DTriangle	Triangle IProfile1D [1-\|x\|/omega if \|x\|<omega, and 0 otherwise]; its Fourier transform standardizedFT(q) is a squared sinc function starting at standardizedFT(0)=1
CProfile1DVoigt	IProfile1D that provides a Fourier transform standardizedFT(q) in form of a pseudo-Voigt decay function etaGauss + (1-eta)Cauchy, with both components starting at 1 for q=0
CProfile2DCauchy	Two-dimensional Cauchy distribution in Fourier space; corresponds to a normalized exp(-r) in real space, with $r=\sqrt{(\frac{x}{\omega_x})^2 + (\frac{y}{\omega_y})^2}$
CProfile2DCone	Two-dimensional cone distribution in Fourier space; corresponds to 1-r if r<1 (and 0 otherwise) in real space with $r=\sqrt{(\frac{x}{\omega_x})^2 + (\frac{y}{\omega_y})^2}$
CProfile2DGate	Two-dimensional gate distribution in Fourier space; corresponds to normalized constant if r<1 (and 0 otherwise) in real space, with $r=\sqrt{(\frac{x}{\omega_x})^2 + (\frac{y}{\omega_y})^2}$
CProfile2DGauss	Two-dimensional Gauss distribution in Fourier space; corresponds to normalized exp(-r^2/2) in real space with $r=\sqrt{(\frac{x}{\omega_x})^2 + (\frac{y}{\omega_y})^2}$
CProfile2DVoigt	Two-dimensional Voigt distribution in Fourier space; corresponds to etaGauss + (1-eta)Cauchy
CPyBuilderCallback	Builds simulation object using a Python callable. Base class to wrap Python callable and pass it to C++. Used in swig interface file, intended to be overloaded from Python
CPyObserverCallback	Observer for FitObjective based on Python callable. Base class to wrap Python callable and pass it to C++. Used in swig interface file, intended to be overloaded from Python
CPyramid2	A frustum (truncated pyramid) with rectangular base
CPyramid3	A frustum with equilateral trigonal base
CPyramid4	A frustum with a quadratic base
CPyramid6	A frustum (truncated pyramid) with regular hexagonal base
CQzScan	Scan type with z-components of scattering vector as coordinate values. Wavelength and incident angles are not accessible separately
CRangedDistributionCosine	Cosine distribution
CRangedDistributionGate	Uniform distribution function
CRangedDistributionGaussian	Gaussian distribution with standard deviation std_dev
CRangedDistributionLogNormal	Log-normal distribution
CRangedDistributionLorentz	Lorentz distribution with median and hwhm
CRealLimits	Limits for a real fit parameter
CRectangle	A rectangle, for use in detector masks
CRectangularDetector	A flat rectangular detector with axes and resolution function
CResolutionFunction2DGaussian	Simple gaussian two-dimensional resolution function
CRotationEuler	A sequence of rotations about the z-x'-z'' axes
CRotationX	A rotation about the x axis
CRotationY	A rotation about the y axis
CRotationZ	A rotation about the z axis
CRotMatrix	Rotation matrix in three dimensions. Represents group SO(3). Internal parameterization based on quaternions
CRoughnessModelWrap
CSawtoothRippleBox	The form factor for a cosine ripple, with box profile in elongation direction
CSawtoothRippleGauss	The form factor for a cosine ripple, with Gaussian profile in elongation direction
CSawtoothRippleLorentz	The form factor for a cosine ripple, with Lorentz form factor in elongation direction
CScanResolution	Container for reflectivity resolution data
CScatteringSimulation	GISAS simulation
CSimpleSelectionRule	Selection rule (v*q)modulus!=0, defined by vector v(a,b,c) and modulus
CSimulationResult	Wrapper around Datafield that also provides unit conversions
CSpecularSimulation	Specular reflectometry simulation
CSphere	A full sphere
CSphericalDetector	A detector with coordinate axes along angles phi and alpha
CSpheroid	A full spheroid (an ellipsoid with two equal axes, hence with circular cross section)
CSpinMatrix
CSpinor
CSquareLattice2D	A two-dimensional Bravais lattice with square unit cell
CThreadInfo	Information to run simulation with dedicated number of threads
CTruncatedCube	A cube, with tetrahedral truncation of all corners
CTruncatedSphere	A truncated Sphere
CTruncatedSpheroid	A truncated spheroid. An ellipsoid with two equal axis, truncated by a plane perpendicular to the third axis
CVariableBinAxis	Axis with variable bin size
CVarianceConstantFunction	Returns 1.0 as variance value
CVarianceSimFunction	Returns max(sim, epsilon)
CVec3	Three-dimensional vector class, templated on base type
CVerticalLine	An infinite vertical line