CAx Implementor Forum (CAx-IF) est un groupe de développeurs de logiciels et d'éditeurs travaillant sur la norme STEP ISO 10303. ITI TranscenData est membre actif de CAx-IF depuis 1999.
Chaque participant traduit un ensemble de modèles CAO de référence au format STEP Partie 21. Le fichier STEP est vérifié pour s'assurer qu'il est syntaxiquement, structurellement, et sémantiquement, correcte. Les autres participants CAx-IF téléchargent chaque fichier STEP et le traduisent à leur tour dans leur système puis lancent divers diagnostics pour vérifier la validité sémantique et la qualité des informations échangées.
Les capacités de CADfix par rapport à la dernière version de la norme STEP sont disponibles dans le tableau suivant:
| 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 | |||||||
