Function calculate_monochromatic_reflection_geometry 

pub fn calculate_monochromatic_reflection_geometry(
    cell: UnitCell,
    hkl: &[[i32; 3]],
    instrument: ConstantWavelengthInstrument,
    position_correction: MonochromaticPositionCorrection,
) -> Result<MonochromaticReflectionGeometry, StructuralPatternError>

Calculate corrected monochromatic reflection positions without profiles.

Errors

Returns StructuralPatternError for invalid cell, wavelength, position correction, or inaccessible reflections.