c4d_base/description/Fcadimport.hParameters are accessed with cinema::C4DAtom::GetParameter() and cinema::C4DAtom::SetParameter(). See Parameters.
Parameter: Original Units
CADIMPORT_ORIGINAL_UNITSParameter: Geometry
CADIMPORT_GEOMETRYParameter: Normals
CADIMPORT_NORMALSCADIMPORT_NORMALS_NONECADIMPORT_NORMALS_NORMALTAGCADIMPORT_NORMALS_PHONGTAGParameter: UVs
CADIMPORT_UVSParameter: Splines
CADIMPORT_SPLINESParameter: Instances
CADIMPORT_INSTANCESCADIMPORT_INSTANCES_NONECADIMPORT_INSTANCES_INSTANCECADIMPORT_INSTANCES_RENDERINSTANCEParameter: Materials
CADIMPORT_MATERIALSCADIMPORT_MATERIALS_NONECADIMPORT_MATERIALS_ORIGINALCADIMPORT_MATERIALS_DISPLAY_COLORSCADIMPORT_MATERIALS_RANDOMParameter: Display Colors
CADIMPORT_DISPLAY_COLORSCADIMPORT_DISPLAY_COLORS_NONECADIMPORT_DISPLAY_COLORS_ORIGINALCADIMPORT_DISPLAY_COLORS_RANDOMParameter: Layers
CADIMPORT_LAYERSCADIMPORT_LAYERS_NONECADIMPORT_LAYERS_ORIGINALCADIMPORT_LAYERS_SBTParameter: Visibility
CADIMPORT_VISIBILITYParameter: Helper
CADIMPORT_HELPERParameter: Hidden Objects
CADIMPORT_LOAD_HIDDENParameter: Source Mesh
CADIMPORT_SOURCE_MESHParameter: LOD
CADIMPORT_LODParameter: Scale Based Tessellation
CADIMPORT_SCALEBASEDTESSELATIONParameter: Scale Range
CADIMPORT_SCALEBASEDTESSELATION_RANGEParameter: Linear Interpolation
CADIMPORT_SCALEBASEDTESSELATION_INTERPOLATIONParameter: Sag . S
CADIMPORT_LOW_MAX_SAGParameter: Angle . S
CADIMPORT_LOW_MAX_ANGLEParameter: Length . S
CADIMPORT_LOW_MAX_LENGTHParameter: Sag . M
CADIMPORT_MEDIUM_MAX_SAGParameter: Angle . M
CADIMPORT_MEDIUM_MAX_ANGLEParameter: Length . M
CADIMPORT_MEDIUM_MAX_LENGTHParameter: Sag . L
CADIMPORT_HIGH_MAX_SAGParameter: Angle . L
CADIMPORT_HIGH_MAX_ANGLEParameter: Length . L
CADIMPORT_HIGH_MAX_LENGTHParameter: Detailing
CADIMPORT_DETAILINGCADIMPORT_DETAILING_ORIGINALCADIMPORT_DETAILING_CUSTOMCADIMPORT_DETAILING_HIGHCADIMPORT_DETAILING_MEDIUMCADIMPORT_DETAILING_LOWParameter: Max Sag (mm)
CADIMPORT_MAX_SAGParameter: Max Angle
CADIMPORT_MAX_ANGLEParameter: Max Length (mm)
CADIMPORT_MAX_LENGTHParameter: Combine
CADIMPORT_SEWCADIMPORT_SEW_NONECADIMPORT_SEW_KEEP_ORIGINAL_BODIESCADIMPORT_SEW_CREATE_BODIES_BY_TOPOLOGYCADIMPORT_SEW_CREATE_BODIES_BY_COLORCADIMPORT_SEW_CREATE_BODIES_BY_LAYERParameter: Swap Y and Z Axes
CADIMPORT_SWAP_YZAXISParameter: Heal
CADIMPORT_HEALParameter: Stitch
CADIMPORT_STITCH_COUNTParameter: Optimize Hierarchy
CADIMPORT_OPTIMIZE_HIERARCHY