The CAx Implementor Forum (CAx-IF) is a group of software developers and vendors working on STEP ISO 10303. ITI Transcandata is an active CAD-IF participant since 1999.
Each participant translates a reference set of CAD models into STEP Part 21 file format. The STEP file is checked to ensure that it is syntactically, structurally, and semantically, correct. The other CAx-IF participants download each STEP file and translate it into their native system and run various diagnostics to check the semantic validity and quality of the information exchanged.
CADfix capabilities regarding STEP support with last in production release are available on the following table
| Recommended Practices Functionality for CADfix | AP203 E2 Import | AP203 E2 Export | AP214 IS (2001) Import | AP214 IS (2001) Export | AP214 E3 (2010) Import | AP214 E3 (2010) Export | AP242 Import | AP242 Export |
|---|---|---|---|---|---|---|---|---|
| Geometry | ||||||||
| Wireframe | X | X | X | X | X | X | X | X |
| Geom. Bounded Surface Model | X | X | X | X | X | X | X | X |
| BREP Solid | X | X | X | X | X | X | X | X |
| 3D Tessellated | X | |||||||
| Assembly Structure | ||||||||
| Assembly Structure | X | X | X | X | X | X | X | X |
| Mapped_Item | X | X | X | X | ||||
| Composite Material | ||||||||
| Model Styling | ||||||||
| Solid Color | X | X | X | X | X | X | X | X |
| Face Color | X | X | X | X | X | X | X | X |
| Overriding Face Color | X | X | X | X | X | X | X | X |
| Edge / Curve Color | X | X | X | X | X | X | X | X |
| Overriding Edge Color | X | X | X | X | X | X | X | X |
| Point Styling | X | X | X | X | X | X | X | X |
| Invisibility | ||||||||
| Curve Style | X | X | X | X | X | X | X | X |
| Layer | X | X | X | X | X | X | X | X |
| Assembly Instance Styling | ||||||||
| Material Identification and Density | ||||||||
| Material as Property | ||||||||
| Density as Material Property | ||||||||
| External References | ||||||||
| Simple External References | X | X | X | X | ||||
| Nested External References | ||||||||
| External Element References | ||||||||
| L1: From one file to one other file | ||||||||
| Document as Product Approach | ||||||||
| AP242 BO Model XML Assembly Structure | ||||||||
| Geometric Validation Properties | ||||||||
| Original GVP (Volume, Area, Centroid) | ||||||||
| Independent Curve Length | ||||||||
| Independent Curve Centroid | ||||||||
| Bounding Box / Model Size | ||||||||
| GVP at Geometry Level | ||||||||
| Assembly Validation Properties | ||||||||
| Number of Children | ||||||||
| Notional Solids Centroid Position | ||||||||
| STEP File Compression | ||||||||
| Import | ||||||||
| Export | ||||||||
| Supplemental Geometry | ||||||||
| Bound Geometry Elements | ||||||||
| Unbound Geometry Elements | ||||||||
| Points and Axis Placements | ||||||||
| Planes | ||||||||
| User Defined Attributes | ||||||||
| Attributes at Part/Product Level | ||||||||
| Attributes at Geometry Level | ||||||||
| Attributes at Assembly Component Instances | ||||||||
| Descriptive / String Attributes | ||||||||
| Value Attributes (no unit, e.g. count, ratio, boolean) | ||||||||
| Measure Attributes (with unit) | ||||||||
| UDA Validation Properties | ||||||||
| Character-based Presentation | ||||||||
| 3D Text (Text Strings) | ||||||||
| Associative Text | ||||||||
| PMI Polyline Presentation | ||||||||
| Basic Polylines | ||||||||
| Filled Polylines | X | X | X | |||||
| Polyline Styling | X | X | X | |||||
| Tessellated Polyline Presentation | ||||||||
| Annotation Planes | ||||||||
| Cross-Highlighting (Linking Annotations with Geometry) | X | X | X | |||||
| Basic Saved View | X | X | X | |||||
| Simple Section View (one cutting plane) | ||||||||
| Linking PMI Presentation to Representation | X | |||||||
| PMI Presentation Validation Properties | ||||||||
| Model level: | ||||||||
| Total Annotations per Model | ||||||||
| Total Number of Views per Model | ||||||||
| View level: | ||||||||
| Number of Annotations per View | ||||||||
| Annotation Level: | ||||||||
| Polyline Curve Length | ||||||||
| Polyline Centroid | ||||||||
| Tessellated Length / Area | ||||||||
| Tessellated Centroids | ||||||||
| PMI Representation | ||||||||
| Dimensions | X | |||||||
| Tolerances | X | |||||||
| Datums | X | |||||||
| Datum Targets | X | |||||||
| Labels / Notes | X | |||||||
| Tolerance Zone | X | |||||||
| Limits and Fits | X | |||||||
| Tolerance Modifiers | X | |||||||
| Composite Tolerances | X | |||||||
