HOOPS Exchange 2026.1.0

Technology Updates

Format Updates

DGN Reader Official Release

Beginning with HOOPS Exchange release 2026.1.0, the DGN reader is officially supported. For more information, see DGN Reader.

See File Formats for the list of all supported formats.

New Features

Creo Simplified Representation

HOOPS Exchange now provides a way to extract simplified representations as views independent of combined states while importing Creo files. A new option called m_bReadSimplifiedRepresentationAsView has been introduced.

API Changes

Several API changes have been made in this release, to remove deprecated functions and structures, and to make their naming more consistent. To help with all the renaming you can use the he_2026_1_api_update.py located in the tools folder of the HOOPS Exchange installation.

  • Renamed types:
    • A3DAsmAttachmentsInfosSLW is renamed to A3DAsmAttachmentInfoSLW
    • A3DAsmLayerEntity is renamed to A3DAsmLayer.
    • A3DAsmLayerEntityData is renamed to A3DAsmLayerData.
    • A3DAsmProductOccurrenceDataProe is renamed to A3DAsmProductOccurrenceDataCreo.
    • A3DAsmProductOccurrenceDataUg is renamed to A3DAsmProductOccurrenceDataNX.
    • A3DElementsByRefsetUg is renamed to A3DElementsByRefsetNX.
    • A3DPromotedBodyUg is renamed to A3DPromotedBodyNX.
    • A3DRiComputeMeshDataParameters is renamed to A3DRiComputeMeshParametersData.
    • A3DRWParamsProEData is renamed to A3DRWParamsCreoData.
    • A3DRWParamsUnigraphicsData is renamed to A3DRWParamsNXData.
  • Renamed functions:
    • A3DAsmGetFilesPathFromModelFile() is renamed to A3DAsmComputeFilePathsFromModelFile().
    • A3DAsmLayerEntityGet() is renamed to A3DAsmLayerGet().
    • A3DAsmProductOccurrenceGetProe() is renamed to A3DAsmProductOccurrenceGetCreo().
    • A3DAsmProductOccurrenceGetUg() is renamed to A3DAsmProductOccurrenceGetNX().
  • Renamed members:
    • In A3DEMDDimensionSymbolType, KEA3DDimensionSymbolTypeUNKNOW is renamed to kA3DDimensionSymbolTypeUNKNOWN.
    • In A3DEEntityType, kA3DTypeAsmLayerEntity is renamed to kA3DTypeAsmLayer.
    • In A3DAsmProductOccurrenceDataSLW, m_uiAttachementsSize is renamed to m_uiAttachmentsSize.
    • In A3DAsmProductOccurrenceDataSLW, m_psAttachements is renamed to m_psAttachments.
    • In A3DRWParamsSpecificLoadData, m_sUnigraphics and m_sProE are renamed to m_sNX and m_sCreo.
    • In A3DAsmProductOccurrenceDataCreo, m_iProEMemberType and m_iProEMemberId are renamed to m_iCreoMemberType and m_iCreoMemberId.
    • The enumeration names have been made more consistent:
      • Names starting with EA3D now start with A3DE, for example: EA3DMDLineWeldingType becomes A3EDMDLineWeldingType.
      • Names starting with A3D now start with A3DE, for example: A3DMDGDTValueType becomes A3DEMDGDTValueType.
      • Names starting with A3DProE now start with A3DECreo, for example: A3DProESessionColorType becomes A3DECreoSessionColorType.
      • Value names starting with A3DProE now start with kA3DCreo, for example: A3DProEReadConstructEntities_AsDatum becomes kA3DCreoReadConstructEntities_AsDatum.
      • Value names starting with KEA3D and KA3D have been renamed to kA3D, for example: KEA3DDimensionSymbolTypePROJTOLZONE becomes kA3DDimensionSymbolTypePROJTOLZONE.
      • Value names starting with kA3DE_ have been renamed to kA3D_, for example: kA3DE_JT81 becomes kA3D_JT81.
  • Added enum values in A3DEEntityType:
    • kA3DTypeMiscAttributeUnit
    • kA3DTypeDrawingCurve3D
  • Removed functions:
    • deprecated_A3DDrawGetBoundingBox(). Use A3DMiscComputeBoundingBox() with the parameter A3DMiscComputeBoundingBoxOptions having m_bIncludePMI set to true instead.
    • deprecated_A3DGetCurveAsAnalytic(). Use A3DSimplifyCurveWithAnalytics() instead.
    • deprecated_A3DGetCurveAsAnalyticFromCoEdge(). Use A3DSimplifyCurveWithAnalyticsFromCoEdge() instead.
    • deprecated_A3DGetSurfaceAsAnalytic(). Use A3DSimplifySurfaceWithAnalytics() instead.
    • deprecated_A3DProjectPointCloud2(). Use A3DProjectPointCloud3() instead.
    • deprecated_A3DComputeOrthoHLROnModelFile(). Use A3DComputeOrthoHLROnModelFile3() instead.
    • deprecated_A3DComputeOrthoHLROnModelFile2(). Use A3DComputeOrthoHLROnModelFile3() instead.
    • deprecated_A3DDisableHandleSIGSEGV().
    • deprecated_A3DEnableHandleSIGSEGV().
    • deprecated_A3DAsmPartDefinitionFeatureTreesGet().
    • deprecated_A3DSurfBaseGetAsNurbs(). Use A3DSurfBaseWithDomainGetAsNurbs() instead.
    • deprecated_A3DMkpRTFInit(). Use A3DMkpRTFFieldCreate() instead.
    • deprecated_A3DMkpRTFGetField(). Use A3DMkpRTFFieldGet() instead.
    • deprecated_A3DMkpRTFDelete(). Use A3DMkpRTFFieldDelete() instead.
    • deprecated_A3DAsmProductOccurrenceUnload(). Use A3DAsmModelFileUnloadParts() instead.
    • deprecated_A3DSimplifyModelFileCurveAndSurfaceAsAnalytic(). Use A3DSimplifyModelFileWithAnalytics() instead.
    • deprecated_A3DPDFInitializePDFLib(). Use A3DPDFInitializePDFLibAndResourceDirectory() instead.
    • deprecated_A3DPDFDocumentCreateUniquePage(). Use A3DPDFDocumentAppendNewPage2() instead.
    • deprecated_A3DPDFDocumentAppendNewPage(). Use A3DPDFDocumentAppendNewPage2() instead.
    • deprecated_A3DPDFDocumentAppendPageFromPDFFile(). Use A3DPDFDocumentAppendPageFromPDFFileAndSuffixFields() instead.
    • deprecated_A3DPDFDocumentCreateUniquePage2(). Use A3DPDFDocumentAppendNewPage2() instead.
    • deprecated_A3DPDFDocumentGetUniquePage(). Use A3DPDFDocumentGetPage() instead.
    • deprecated_A3DPDFDocumentSetPassword(). Use A3DPDFDocumentSetPasswordSecurity() instead.
    • deprecated_A3DPDFDocumentSetDocumentPermissions(). Use A3DPDFDocumentSetPasswordSecurity() instead.
    • deprecated_A3DPDFDocumentSave(). Use A3DPDFDocumentSaveEx() instead.
    • deprecated_A3DPDFImageCreate(). Use A3DPDFImageCreateFromFile() or A3DPDFImageCreateFromStream() instead.
    • deprecated_A3DPDFPageInsertImage(). Use A3DPDFPageInsertImage2() instead.
    • deprecated_A3DPDFDefineViewCarousel().
    • deprecated_A3DPDF3DArtworkCreate(). Use A3DPDF3DArtworkCreate2() instead.
    • deprecated_A3DPDFAnimMotionCreate(). Use A3DPDFAnimMotionCreate2() instead.
    • deprecated_A3DPDFDocumentAddImageAsIcon(). Use A3DPDFDocumentAddImageAsIcon2() instead.
    • deprecated_A3DPDFTableCreate().
    • deprecated_A3DPDFDefineSlideTable().
    • deprecated_A3DPDFDefineSlideTable2().
    • deprecated_A3DPDFSlideTableLinkTo3DNodes().
    • The A3DAsmProductOccurrenceGetLayerList() function is removed. Please use instead the A3DAsmLayer entities in A3DAsmProductOccurrence.
    • All the other functions from the draw module have also been removed.
  • Removed types:
    • deprecated_A3DRTFFieldData. Use A3DMkpRTFFieldData instead.
    • deprecated_A3DPDFPageData. Use A3DPDFPageData2 instead.
    • deprecated_A3DPDFImageData.
    • deprecated_A3DPDF3DArtworkData. Use A3DPDF3DArtworkData2 instead.
    • deprecated_A3DPDFAnimMotionData. Use A3DPDFAnimMotionData2 instead.
    • deprecated_A3DPDFTableData.
    • The deprecated A3DAsmLayer structure is removed.
  • Removed members:
    • In A3DStatus, A3DPDF_CANNOT_LOAD_TABLETOPDF_DLL, A3DPDF_HTML_TABLE_ERROR, A3DPDF_HTML_STYLE_ERROR have been removed.
    • In A3DETessellationLevelOfDetail, deprecated_kA3DTessLODControlledPrecision has been removed.
    • In A3DEStepFormat, deprecated_kA3DStepAP242 has been removed.
    • In A3DRWParamsGeneralData, deprecated_m_iNbMultiProcess.
    • In A3DRWParamsTessellationData, deprecated_m_dMinimalTriangleAngleDeg.
    • In A3DRWParamsIGESData, deprecated_m_bSewBrepModels.
    • In A3DAsmProductOccurrenceDataJT, deprecated_m_usValidDisplayFields.
    • The kA3DFontStreched macro constant has been removed, please use kA3DFontStretched instead.

Documentation Changes

Expanded File Formats Information

The File Formats section of Getting Started now contains expanded information on format-specific features supported by HOOPS Exchange readers and writers. Simply click the format titles in the Import and Export tables for more detailed information.

Deprecations

These symbols are deprecated. They will enter the opt-in stage in 2027.1.0, and then be removed completely in the 2028.1.0 release:
  • A3DAsmProductOccurrenceData::m_ucBehaviour
  • A3DAsmModelFileDelete()
  • A3DDllActivateXMLTrace()
  • A3DFaceUVPointInsideManagerDelete()
  • A3DGraphicsDelete()
  • A3DMiscCascadedAttributesDelete()
  • A3DMkpRTFFieldDelete()
  • A3DProjectPointCloudManagerDelete()
  • A3DXmlParsing()
  • A3DPDFCheckBoxSetForFitSelectedMode()
  • A3DPDF3DAnnotGetJavascriptHighlightManagerName()

Fixed Bugs

Issue Description
SDHE-23123 Fixed unexpected behavior when importing corrupted iges file.
SDHE-23044 Fixed an access violation to an uninitialized TfMarkupTessData when all markup symbol entities contain only Note
SDHE-23033 Fixed unexpected behavior when importing corrupted iges file.
SDHE-23031 Fixed unexpected behavior when importing corrupted iges file.
SDHE-23030 Fixed unexpected behavior when importing corrupted iges file.
SDHE-22779 Resolved a security issue (CVE) in the U3D reader
SDHE-22722 Handle IGES export of root product-occurrence placements and general transformations with uniform scale
SDHE-22645 Added type kA3DTypeDrawingCurve3D to the API.
SDHE-22521 Flatten Contours and Rosette are now also linked to correct feature node (CATCoFlattenBodyFeatName).
SDHE-22235 Improve the Parasolid reader and file format check to reliably process files larger than 2 GB