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DATAKIT API
V2025.4
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DATAKIT API
V2025.4
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| Header Field | DATAKIT Class | Remarks |
|---|---|---|
FILE_SCHEMA.name | FileVersion of Dtk_Component + Dtk_MetaData, title "Header : Schema" | See remark (1) |
| FILE_DESCRIPTION.description | Dtk_MetaData on Dtk_Component, title "Header : Description" | |
| FILE_NAME.author | Dtk_MetaData on Dtk_Component, title "Header : Author" | |
| FILE_NAME.organization | Dtk_MetaData on Dtk_Component, title "Header : Organization" | |
| FILE_NAME.preprocessor_version | Dtk_MetaData on Dtk_Component, title "Header : Preprocessor Version" | |
| FILE_NAME.originating_system | Dtk_MetaData on Dtk_Component, title "Header : Originating System" | |
| FILE_NAME.authorization | Dtk_MetaData on Dtk_Component, title "Header : Authorization" | |
| FILE_NAME.time_stamp | Dtk_MetaData on Dtk_Component, title "Header : Time Stamp" | |
| FILE_NAME.name | Dtk_MetaData on Dtk_Component, title "Header : File Name" | |
| FILE_NAME.implementation_level | Dtk_MetaData on Dtk_Component, title "Header : Implementation Level" |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| shape_definition_representation | Dtk_Component , type Prototype | |
| shape_representation with item(s): axis_placement | Dtk_Node | Root node of the Dtk_Component |
| shape_representation , other cases of item(s) | one Dtk_Node per item not an axis_placement | |
| shape_representation_relationship | gathers several shape_representation's | |
| property_definition_representation + shape_representation_with_parameters | Dtk_Component , type Prototype | no geometry, only parameters (Dtk_MetaData) |
| product_definition_shape | see below its product_definition | |
| product , field ID or name | Name information of the Dtk_Component | ID is prior, if not defined name is used |
| other product data | detailed in Properties and Metadata | |
| next_assembly_usage_occurence (NAUO) | Dtk_Component , type Instance | |
| product_definition as field 1 of NAUO | the father (assembly) | |
| product_definition as field 2 of NAUO | the child (sub-component) | |
| context_dependent_shape_representation | gathers informations on instance position | |
| shape_representation_relationship_ with_transformation | relative instance position | |
| item_defined_transformation | Dtk_transfo | position (matrix) |
| cartesian_transformation_operator | Dtk_transfo | position (matrix) |
| applied_document_reference + document | Dtk_Component | external reference to another file |
| product_definition_relationship + product_definition_with_associated_documents + document_file | Dtk_Component , type Instance | an alternate way with external reference, origin Smaragd (PDM) |
| additive_manufacturing_setup | Dtk_Component , type Prototype + entity type in Dtk_Info (parameter DtkStep_PRODUCT_TYPE) | AP242E2 : Additive Manufacturing (sub-type of product) |
| additive_manufacturing_setup_relationship : sub-types | Dtk_Component , type Instance + entity type in Dtk_Info (parameter DtkStep_INSTANCE_TYPE) | AP242E2 : Additive Manufacturing (sub-type of NAUO) |
| is the model split in several STEP files ? | Document:RootComponent:GetInfos: Attribute "Step_ExternalReferences" | values : "MONOLITHIC" , "BASIC_REFERENCES" , "NESTED_REFERENCES" |
| case of several roots or of missing product ? | Document:RootComponent:GetInfos: Attribute "Step_AddedItem" | values : "ORPHAN_GEOMETRIES" , "SEVERAL_ROOTS" - otherwise this attribute is absent |
| each geometry/topology, case of missing product ? | its Dtk_Node:GetInfos: Attribute "Step_AddedItem" | values : "ORPHAN_GEOMETRY" - otherwise this attribute is absent |
Notice : STEP files describe separately, so in parallel, relative locations and assembly hierarchy.
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| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| manifold_solid_brep | Dtk_Body, 1 Dtk_Volume, 1 Dtk_Shell (closed) | See its closed_shell |
| brep_with_void | Dtk_Body, 1 Dtk_Volume, list of Dtk_Shell (closed) | one per closed_shell : outer and inner(s) |
| shell_based_surface_model | Dtk_Body, Dtk_Shell(s) (open or closed) | See open_shell or closed_shell |
| face_based_surface_model | Dtk_Body, 1 Dtk_Shell per face (open) | (faces are not connected) |
| geometric_set | Dtk_Body, content see each type of item | (faces are not connected) |
| closed_shell | Dtk_Shell (closed) | |
| oriented_closed_shell | Dtk_Shell (closed) | |
| open_shell | Dtk_Shell (open) | |
| connected_face_set | Dtk_Shell |
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| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| face_surface | Dtk_Face | |
| advanced_face | Dtk_Face | |
| face_bound | Dtk_Loop | (inner or outer) |
| face_outer_bound | Dtk_Loop | (outer) |
| edge_loop | the list of edges of a face(_outer)_bound | |
| oriented_edge | Dtk_Coedge | |
| edge_curve | Dtk_Edge | |
| surface_curve | Dtk_Coedge | (with only pcurve, no 3D curve) |
| seam_edge | Dtk_Edge + 2 Dtk_Coedge | (both coedges on a same face) |
| curve_bounded_surface | Dtk_Face | (no connectivity is coded) |
| composite_curve | Dtk_Loop | |
| composite_curve_on_surface | Dtk_Loop | |
| composite_curve_segment | Dtk_Edge + Dtk_Coedge |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| b_spline_surface and sub-types | Dtk_NurbsSurface | sub-types : rational or not, with or without knots, uniform |
| bezier_surface | Dtk_NurbsSurface | |
| conical_surface | Dtk_Conical_Surface | |
| cylindrical_surface | Dtk_CylindricalSurface | |
| offset_surface | Dtk_OffsetSurface | |
| plane | Dtk_PlaneSurface | |
| spherical_surface | Dtk_SphericalSurface | |
| surface_of_revolution | Dtk_StandardRevolutionSurface or Dtk_RevolutionSurface | according to Dtk_API::IsReversedRevolutionActivated |
| surface_of_linear_extrusion | Dtk_LinearExtrusionSurface | |
| toroidal_surface | Dtk_ToroidalSurface | |
| rectangular_trimmed_surface | same as its basis surface | trimming added |
| surface_replica | same as its basis_surface | moved after conversion |
| rectangular_composite_surface | <font color="red">Not processed</font> |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| line | Dtk_Line | |
| circle | Dtk_Ellipse | as a circle (one radius) |
| ellipse | Dtk_Ellipse | |
| hyperbola | Dtk_Hyperbola | |
| parabola | Dtk_Parabola | |
| offset_curve_3d | Dtk_NurbsCurve | |
| b_spline_curve and sub-types | Dtk_NurbsCurve | sub-types : rational or not, with or without knots, uniform |
| bezier_curve | Dtk_NurbsCurve | |
| trimmed_curve on a line | Dtk_Line with start-end point | (trimming added) |
| trimmed_curve (other than line) | same as its basis curve | (trimming added) |
| curve_replica | same as its basis curve | moved after conversion |
| pcurve | curve (see above) in a Dtk_Coedge | specifies a curve as UV on a Face |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| geometric_set , geometric_curve_set | Dtk_Body, one lump per item (see below) | set of curves or points |
shape_definition_representation + property_definition named "CATIA Geometric Set" & shape_aspect
| Dtk_Body, one lump per item (see below) | from STEP written by Catia ("geometric set" of Catia) |
| cartesian_point | Dtk_Point | |
| composite_curve | Dtk_Shell , open containing a Wire | the Wire contains one Dtk_Curve per segment |
| composite_curve_segment | subtype of Dtk_Curve | according to the type of curve |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| faceted_brep_model | Dtk_mesh | AP203, AP214 |
| face_surface : case of a triangle | a triangle in a Dtk_MeshFace | one Dtk_MeshFace gathers all triangles of same color |
| face_surface (not a triangle) | Dtk_MeshFace with one mockup | if not a triangle |
| face_bound + polyline | a polygon in the mockup of the Dtk_MeshFace | |
| cartesian_point | a vertex in the Dtk_mesh | |
| tessellated_shape_representation | Dtk_mesh | AP242 |
| tessellated_shape_representation_with_accuracy_parameters | Dtk_mesh + in its Dtk_Info : tessellation parameters | AP242E2 |
| tessellated_geometric_set | fills the Dtk_mesh (general case) | AP242 |
| coordinates_list | the vertices of a Dtk_mesh | AP242 |
| tessellated_solid or tessellated_shell | fills the Dtk_mesh (surfacic) | AP242 |
| tessellated_solid or tessellated_shell containing cubic_bezier_triangulated_face | fills the Dtk_mesh (surfacic) + in Dtk_Info : parameter DtkMesh_BZ3 | AP242E2 |
| triangulated_face , triangulated_surface_set | Dtk_MeshFace (surfacic : triangles only) | AP242 |
| complex_triangulated_face , complex_triangulated_surface_set | Dtk_MeshFace (surfacic : triangles, fans, strips) | AP242 |
| cubic_bezier_triangulated_face | Dtk_MeshFace (triangles) + in Dtk_Info : 10 points of Bezier patch DtkMesh_BZ_i | AP242E2 |
| tessellated_edge , tessellated_connecting_edge | Dtk_MeshFace : boundary polylines on a face | AP242 |
| tessellated_wire | fills the Dtk_mesh (wireframe) | AP242 |
| tessellated_curve_set | Dtk_MeshFace : Polyline | AP242 |
| tessellated_point_set , tessellated_vertex | fills the Dtk_mesh (points) | AP242 |
| + repositioned_tessellated_item | moves the Dtk_mesh to a position | AP242 |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| styled_item + presentation_style_assignment | attachment of graphical attribute to a Dtk_entity (in its Dtk_Info) | |
| surface_style_usage | in Dtk_Info : color | style data on face or shell or solid |
| draughting_pre_defined_color | predefined color value | (in: black white red green blue yellow magenta cyan) |
| colour_rgb | Dtk_RGB | color defined as R,G,B values |
| pre_defined_curve_font | in Dtk_Info : CurveLineType | (in: continuous, chain, chain double dash, dashed, dotted) |
| curve_style | in Dtk_Info : color, line type, thickness | gathers style data on free curve |
| pre_defined_marker or marker_type | in Dtk_Info : PointSymbolType | (in: asterisk circle dot plus square triangle x) |
| point_style | in Dtk_Info : color, marker type, marker size | gathers style data on free point |
| presentation_layer_assignment | Layer data in the Dtk_Info of the Dtk_entity | general case : defined with a number |
| presentation_layer_assignment | Layer data in DTk_Info + information in LayerInfoSet | Named layer |
| invisibility | Visibility data in the Dtk_Info of the Dtk_entity | |
| surface_style_transparent , surface_style_rendering_with_properties | Transparency data in the Dtk_Info of the Dtk_entity | recorded as A = 1-T |
| context_dependent_over_riding_styled_item with only one level of instance | graphical attribute (color, invisibility ..) on a Dtk_Component of type Instance | If Override Mode INACTIVE (more than 1 level : not supported) |
| context_dependent_over_riding_styled_item (no level limitation) | on the root component : Dtk_OverrideSet "default" + Dtk_OverrideInfo "step_CDORSI" with Instance Path and color, invisibility | If Override Mode ACTIVE |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| v5_uuid_attribute | Dtk_Info::GetPersistentName() | From AP242E4 Available for Dtk_Component, Dtk_Body, Dtk_Face, Dtk_Edge, Dtk_Vertex, Dtk_Fdt |
| STEP Entities | DATAKIT Class | Remarks |
|---|---|---|
| product , field name | MetaData on Dtk_Component, title "Nomenclature" | |
| product , field description | MetaData on Dtk_Component, title "Description" | |
| product_definition , field definition | MetaData on Dtk_Component, title "Definition" |
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| product_definition_with_associated_documents , field definition | 4 MetaData on Dtk_Component, titles : "DtkStep_PRODUCT_DEF_DOCUMENT_ID" , "DtkStep_PRODUCT_DEF_DOCUMENT_NAME" , "DtkStep_PRODUCT_DEF_DOCUMENT_DESCRIPTION" , "DtkStep_PRODUCT_DEF_DOCUMENT_TYPE" | sub-type of product_definition |
| product_definition_formation , field revision | MetaData on Dtk_Component, title "Revision" | |
| product_definition_formation_with_specified_source , field source | MetaData on Dtk_Component, title "Source", value "made" or "bought" | sub-type of product_definition_formation |
| product_definition_context , field life_cycle_stage | MetaData on Dtk_Component, title "LifeCycleStage" | |
| global_unit_assigned_context : length_unit | ConceptionUnitScale of Dtk_Component | |
| global_unit_assigned_context : plane_angle_unit | in the Dtk_Info of Dtk_Component : parameter Dtk_ConceptionAngleUnit (in radian) | |
| global_uncertainty_assigned_context , uncertainty_measure_with_unit (length) | MetaData on Dtk_Component, title "Uncertainty" , value : real (in MM) |
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| property_definition_representation + property_definition pointing on product_definition_shape | Dtk_Val in the Dtk_Info of the entity (any type of entity) | title is "PDR.name : PDR.representation.name : item.name" value : see below |
| descriptive_representation_item | Dtk_Val of type TEXT | |
| boolean_representation_item | Dtk_Val of type BOOLEAN | AP203E2 and later |
| integer_representation_item | Dtk_Val of type INTEGER | AP203E2 and later |
| real_representation_item | Dtk_Val of type REAL | AP203E2 and later |
| value_representation_item (count_measure or numeric_measure) | Dtk_Val of type INTEGER or REAL | |
| measure_representation_item and sub-types | Dtk_Val, form "real unit", e.g. "1000 mm3" | unit : mm kg s, other ignored |
| one cartesian_point | Dtk_Val of type POINT | |
| one direction | Dtk_Val of type DIR | |
| coordinates_list | several Dtk_Val of type POINT | (names with " : 1" , " : 2" , etc |
| make_from_usage_option | a Dtk_Node Virtual with Dtk_Metadata (for id and name) - alone : attached to the Dtk_Component - with a shape_definition_representation (designating a body) : attached to a Dtk_Node Body | |
| Controlled by configuration setting : if /c stepr_SetModeProperty(2) has been set : | ||
| property_definition_representation + property_definition applied on a product | MetaData on Dtk_Component | By default, title is "PDR.name : PDR.representation.name : item.name" If only PDR.name is defined : title is "PDR.Name" |
| property_definition_representation + property_definition associated to a shape_aspect associated to an item mapped to a Dtk_Body | MetaData on Dtk_Body | By default, title is "PDR.name : PDR.representation.name : item.name" |