TiGL 2.1.6

TiGL 2.1.6 was released on 15/07/2015. This is a bugfix release.

• TiGL Viewer:
  • Fixed critical crash on Windows 64 bit systems that occured sporadically on some systems

TiGL 2.1.5

TiGL 2.1.5 was released on 01/07/2015

• Changed API:
  • Added an output argument in the function tiglWingComponentSegmentPointGetSegmentEtaXsi that returns the error of the computation.
  • The function tiglWingComponentSegmentGetSegmentIntersection uses a new algorithm that should ensure straight
    flap leading edges and straight spars. Also, a new parameter hasWarning was added, to inform the user, that the
    returned segment xsi value is not in the valid range [0,1]. This might be the case, if a spar is partially located outside the wing.
  • Removed macros TIGL_VERSION and TIGL_VERSION_MAJOR from tigl.h. Please use tigl_version.h instead.
• General changes:
  • External geometries can be included into the CPACS file using a link to a STEP file. The allows e.g. the use
    of engines and nacelles. (Note: this is not yet included in the CPACS standard)
  • Improved computation of half model fuselage profiles. Now, fuselages are c2 continuous at the symmetry plane.
  • Improved computation speed of tiglWingComponentSegmentGetPoint by a factor of 30 to 600 (depending on the geometry).
  • Reduced execution time of tiglOpenCPACSConfiguration.
  • All TiXI messages (errors/warnings) are now printed to the TiGL log.
  • Ported to OpenCASCADE 6.8.0.
• New API functions:
  • tiglExportFusedBREP to export the fused configuration to the BRep file format.
• Fixes:
  • Fixed bug, where guide curves on half model fuselages were not touching the symmetry plane.
  • Fixed a TIGL_MATH_ERROR bug in tiglWingComponentSegmentGetSegmentIntersection.
• TiGL Viewer:
  • Ported to Qt 5.
  • OpenGL accelerated rubber band selection. This fixes the slow rubber band selection on Linux and
    the invisible rubber band selection on Mac.
  • Fixed bug when loading a CPACS file with multiple models (thanks Jonas!).
  • Removed support for legacy VRML and CSDFB files.

TiGL 2.1.4

TiGL 2.1.4 was released on 06/02/2015

• Changed API:
  • Added an output argument in the functions tiglWingGetUpperPointAtDirection and tiglWingGetLowerPointAtDirection that returns the error of the computation
• New API functions:
  • tiglFuselageGetIndex and tiglFuselageGetSegmentIndex to retrieve the index of a fuselage and fuselage segment given a CPACS UID
• Fixes:
  • Fixed some warnings using CMake 3
• TiGL Viewer:
  • Fixed a crash in case of a missing model UID
  • Fixed a bug, where debugging BREP files where always created on Linux
  • Improved scripting interface for wingGetLower/UpperPointAtDirection to return the error
• Language bindings:
  • Completed the new Java bindings for TiGL
  • Removed Fortran bindings since nobody is using them

TiGL-2.1.3

TiGL 2.1.3 was released on 08/12/2014. Merry Christmas!

• Changed API:
  • Changed functions tiglWingGetSegmentSurfaceArea to exclude side faces and trailing edges
  • Removed functions tiglWingGetUpperPointAtAngle and tiglWingGetLowerPointAtAngle. These functions were replaced by tiglWingGetUpperPointAtDirection and tiglWingGetLowerPointAtDirection.
• General changes:
  • Support for global transformation (translation refType="absGlobal"). Notice: some (incorrect) CPACS models will now look differently.
  • Accurate B-Spline approximation of CST curves using Chebychev approximation.
  • Implemented recursive fusing trimming for the use of e.g. bellyfairings. Added small cpacs example how to model a bellyfairing.
  • Implemented trimming of intersection curves with parent bodies and far fields
  • Improved computation of fuselage positionings. This should improve loading times of configurations with large number of sections, since the algorithmic complexity is reduced.
  • IGES + STEP export: All wing faces are now classified as Top-Wing, Bottom-Wing, or Trailing-Edge.
  • IGES export: Changed units to mm.
  • IGES export: Implemented layers/levels .
  • The OCAF framework is no longer required to build TiGL.
  • The build system now uses the cmake config-style TiXI and OCE search mechanisms.
• New API functions:
  • Added functions to get the B-Spline paramterization of fuselage and wing profiles:
    • tiglProfileGetBSplineCount, returns the of B-Splines a profile is built of.
    • tiglProfileGetBSplineDataSizes, returns the size of the knot vector and the number of control points of one profile B-Spline.
    • tiglProfileGetBSplineData, returns the knot vector and the control points.
  • Added functions tiglWingGetSectionCount and tiglFuselageGetSectionCount
  • Added functions tiglWingGetSegmentUpperSurfaceAreaTrimmed and tiglWingGetSegmentLowerSurfaceAreaTrimmed to e.g. compute the surface area of a control device.
  • Added functions tiglWingGetChordPoint and tiglWingGetChordNormal to query points on the wing chord surface.
  • Added functions tiglWingGetUpperPointAtDirection and tiglWingGetLowerPointAtDirection.
• Fixes:
  • Fixed tiglWingComponentSegmentGetPoint in case of global wing transformations.
  • Fixed tiglWingComponentSegmentGetPoint bug, returning eta values > 1 (issue 107).
  • Fixed numerical inaccuracy of tiglWingGetPointDirection
  • Fixed incorrect CST curves at for N2 < 1.
  • Fixed null pointer bug in IGES export.
• TiGLViewer:
  • Highly improved scripting console:
    • Script file can be given as command line argument (using option --script)
    • Added function to export all objects to file
    • The main application objects can be scripted (i.e. app, app.viewer, app.scene)
    • Draw shapes, points and vectors from script
    • Make screenshots by command
    • Context menu for copy-paste actions
    • History with recent commands
    • Mouse support
    • More wrapped tigl functions
    • Improved stability
    • Exception handling
    • TiXI errors and warnings are printed on the console now
  • Added dialog to draw points and vectors.
  • Added dialog for screenshot settings, including option for white background.
  • JPEG and PNG support for background images.
  • Collada export for the complete configuration (i.e. support for multiple objects).
  • Cleanup of menu entries.
  • Fixed multiple opened CPACS documents in TiGLViewer.
  • Fixed 3D view flickering on Mac OS X with Qt 4.8.6.
  • Language bindings:
    • Added python 3 support of tiglwrapper.py
    • Improved TiGL library loading error messages in python wrapper
    • New Java bindings. Hand-written high level API not yet complete (not all TiGL functions wrapped). Low level API (autogenerated) can be used instead for unimplemented functions.
    • Added Java example (see share/doc/tigl/examples/JavaDemo.java)
  • Documentation:
    • Added chapter for TiGL Viewer and the TiGL Viewer scripting console.

TiGL-2.1.2

This TiGL Release was published on 17/04/2014.

• Changed API:
  • The returned UID strings of the following functions must not be freed by the user anymore:
    • tiglWingGetOuterSectionAndElementIndex
    • tiglWingGetInnerSectionAndElementUID
    • tiglFuselageGetStartSectionAndElementUID
    • tiglFuselageGetEndSectionAndElementUID
    • tiglWingComponentSegmentPointGetSegmentEtaXsi
    • tiglWingComponentSegmentFindSegment
  • Changed behavior of tiglWingComponentSegmentFindSegment. In case the specified point does not lie within 1 cm of any segment, TIGL_NOT_FOUND is returned.
  • Changed behavior of tiglWingComponentSegmentPointGetSegmentEtaXsi. If the specified point lies outside any segment so that the transformation can not be executed, TIGL_MATH_ERROR is returned.
  • The following API functions tiglComponentIntersectionPoint, tiglComponentIntersectionPoints and tiglComponentIntersectionLineCount are deprecated and will be removed in future releases. These functions are replaced by new intersection routines.
  • Removed functions tiglExportStructuredIGES and tiglExportStructuredSTEP
• General changes:
  • Completely reworked boolean operations with the following effects:
    • Fusing the whole plane is faster in many cases and more reliable
    • We keep track of the origins of each trimmed face which helps for the IGES and STEP exports
    • The boolean operations can be debugged now by setting the environment variable TIGL_DEBUG_BOP
  • Completely rewritten STEP and IGES exports:
    • Each face has now an identifier name
    • Inclusion of intersection curves
    • Inclusion of far fields into exports
    • IGES export in non-BREP mode since it is not supported by CATIA
  • Added new demos for C, Python and MATLAB. Please look into the documentation how to run them.
  • Added function for the intersection computation of a geometrical shape with a plane
  • Experimental implementation of wing and fuselage guide curves
  • The mathematical orientation of wing profiles is checked for correctness
  • TiGL requires now at least OpenCASCADE 6.6.0
  • Ported to OpenCASCADE 6.7.0
• New API functions:
  • Added new API functions for shape/shape and shape/plane intersections:
    • tiglIntersectComponents
    • tiglIntersectWithPlane
    • tiglIntersectGetLineCount
    • tiglIntersectGetPoint
• Fixes:
  • Fixed a bug in tiglWingComponentSegmentFindSegment
  • Fixed numerical inaccuracy in the projection of points to a wing segment
  • Fixed crash in case of too long UIDs
  • Fixed some memory leaks
• TiGLViewer:
  • Improved IGES import:
    • Multiple shapes are now imported as separate shapes from IGES files.
    • Fixed wrong scaling when importing IGES files.
  • Improved STEP export:
    • Files are now exported in units of meters instead of millimeters.
  • Improved BREP export and import: compound objects are now decomposed to separate objects.
  • Added method to export fused aircraft to BREP
  • Added method to export wing and fuselage profiles and guide curves to BREP
  • Fixed incorrect units in IGES and STEP export from save-as dialog.
  • General save-as dialog: All visible objects are saved to the file, if no shape is selected. Otherwise, only the selected objects are exported.
  • Added debugging parameters to settings dialog. This includes:
    • Adapting number of displayed iso lines per face
    • Display face numbers
    • Debug boolean operations (if enabled, debugging shapes in BRep format are stored to the current working directory)
  • Added new dialog for shape/shape and shape/plane intersections.
  • Added drag and drop support to TiGLViewer. Files (CPACS, IGES, STEP, BREP) are opened when they are dragged into TiGLViewer.
  • TiGLViewer displays far field after calculating the trimmed aircraft
  • Iso U/V lines are no longer displayed by default. This can be changed in the settings dialog.
  • The fused/trimmed aircraft geometry is displayed using a different color for each component.
  • Added visualization of wing and fuselage guide curves.
  • Fix: Only the first intersection curve was displayed. This is fixed now.
  • New icons

TiGL 2.1.1

TiGL 2.1.1 was released on 28/01/2014. Please scroll down to download the binary packages.

• Changed API:
  • In previous TiGL version, some strings had to be freed manually after calling some functions. These strings must not be freed anymore. Following functions are affected:
    • tiglWingGetOuterSectionAndElementIndex
    • tiglWingGetInnerSectionAndElementUID
    • tiglFuselageGetStartSectionAndElementUID
    • tiglFuselageGetEndSectionAndElementUID
    • tiglWingComponentSegmentPointGetSegmentEtaXsi
    • tiglWingComponentSegmentFindSegment
  • Changed return value of tiglWingComponentSegmentFindSegment: In case the given point is located more than 1 cm away from any segment, TIGL_NOT_FOUND is returned.
  • Changed return value of tiglWingComponentSegmentPointGetSegmentEtaXsi: If the given point lies outside any segment so that the transformation can not be executed, TIGL_MATH_ERROR is returned.
• General changes:
  • Changed console logging to include errors and warnings by default
  • Wing profiles are automatically trimmed at their trailing edge to ensure, that the trailing edge is always perpendicular to the chord line. This is required by the wingGetUpperPoint and wingGetLowerPoint functions.
• Fixes:
  • Fixed a bug in tiglWingGetUpperPoint and tiglWingGetLowerPoint in which some points could not be calculated
  • Fixed two memory leaks

2.1.0

Released: 17/01/2014

• Changed API:
  • Added argument for tiglWingGetReferenceArea to define the projection plane for reference area calculations
• General Changes:
  • Support for parametric CST wing profiles
  • Logging improvements. The console verbosity can now be set independent of file logging.
• New API functions:
  • tiglWingGetMAC, computes the mead aerodynamic chord length and position (thanks to Arda!)
• Fixes:
  • Fixed crash in case of missing wing and fuselage profiles
  • Fixed accuracy errors in tiglWingSegmentPointGetComponentSegmentEtaXsi and tiglWingComponentSegmentPointGetSegmentEtaXsi
  • Fixed a warning when including tigl.h
  • Fixed numerical bug tiglWingComponentSegmentGetSegmentIntersection
• TiGLViewer:
  • Improved dialog for displaying wing component segment points
  • Added BRep export
  • Fixed crash on some Linux systems with strange LANG settings
  • Added dialog showing log history in case of an error

2.0.7

Released: 21/11/2013

• Changed API:
  • replaced tiglWingComponentSegmentGetMaterialUIDs with tiglWingComponentSegmentGetMaterialUID and tiglWingComponentSegmentGetMaterialCount
• General Changes:
  • Implementation of far fields
  • More work on STEP and IGES export. The geometry is now exported as faces instead of solids in the STEP export.
  • Verification of airfoils during CPACS loading, this fixes twisted wing segments for some CPACS files
  • Improved modelling of leading and trailing edge
  • New Logging Framework
• New API functions:
  • tiglWingGetSegmentEtaXsi, to transform global x,y,z coordinates into wing segment coordinates
  • tiglExportFusedSTEP, exports the trimmed/fused geometry as a step file
  • tiglWingComponentSegmentGetMaterialUID, to get the material UID at a point of the component segment
  • tiglWingComponentSegmentGetMaterialThickness, to get the material thickness at a point of the component segment
  • tiglWingComponentSegmentGetMaterialCount, to get the number of materials defined at a point of the component segment
  • tiglLogSetFileEnding, tiglLogSetTimeInFilenameEnabled, tiglLogToFileDisabled, tiglLogToFileEnabled, tiglLogToFileStreamEnabled, to modify logging settings
• Fixes:
  • fixed a bug in tiglWingComponentSegmentGetSegmentIntersection
• TiGLViewer:
  • Loading of HOTSOSE mesh files
  • Auto-reload of non-CPACS files
  • Improved display of airfoils
  • Improved error dialogs

2.0.6

Released: 27/08/2013

• General Changes:
  • Improved loading times
  • Improved speed of intersection calculations by caching and reusing results
  • Switched to faces instead of solids in STEP Export
  • Switched to const char ** API
  • Prepared TiGL for Android (currently working but still experimental)
• New API functions:
  • tiglExportMeshedWingSTLByUID and tiglExportMeshedFuselageSTLByUID for STL export (Hello 3D printing!)
  • tiglWingComponentSegmentGetSegmentIntersection
• Fixes:
  • Fixed tiglFuselageGetPointAngle and tiglFuselageGetPointAngleTranslated giving wrong results (issues 89 and 92)
  • TiGL required positionings for all fuselage segments, this is now fixed (issue 57)
  • Fixed error when opening CPACS files with composite materials
  • Fixed wrong units in iges export (issue 78)
  • Silenced Error messages that weren't errors
  • Fixed different errors in tiglWingComponentSegmentPointGetSegmentEtaXsi
  • Fixed duplicate log files

2.0.5

Released: 11/06/2013

• Changed API:
  • Switched to const char ** strings
  • tiglWingGetSegmentIndex returns now also the wing index instead of asking for it
  • Removed TiGL wire algorithms switching functions. Now a Bspline wire is used for each profile.
• General Changes:
  • Symmetry modeling
  • Explicit modeling of the wing leading edge to improve tesselated output (no more leading edge bumps)
  • Explicit modeling of the wing upper and lower shape
  • The fuselage lofting now creates a smooth surface without hard edges (due to fixed OpenCASCADE bug)
  • Completely rewritten VTK export:
    • Full body export including wing segment metadata
    • Fixed lots of errors.
    • Large improvement of calculation times.
    • Provides wing segment metadata in a proper VTK-way, to allow visualization of these data in VTK viewers. Calculation and export of the proper normal vectors.
  • IGES and STEP export with CPACS metadata
  • Collada export for use in 3D rendering programs like Blender
  • MATLAB bindings for TiGL!
  • Completeley rewritten python bindings (e.g. better support for arrays)
  • Added logging framework to write outputs into log files (google-glog)
  • Ported to OpenCASCADE 6.6.0
• New API functions:
  • tiglWingComponentSegmentGetMaterialUIDs, to query materials on component segment
  • tiglWingComponentSegmentGetPoint, to query cartesian point on the wing component segment (on chord surface)
  • tiglWingSegmentPointGetComponentSegmentEtaXsi, to compute segment to component segment coordinates
  • tiglWingComponentSegmentGetSegmentUID, queries the uids of the ith segment of the component segment
  • tiglWingComponentSegmentGetNumberOfSegments, queries the number of segments belonging to a component segment
  • tiglExportFuselageColladaByUID
  • tiglExportWingColladaByUID
  • tiglExportStructuredIGES
  • tiglExportStructuredSTEP
  • tiglConfigurationGetLength, returns the length of the airplane
  • tiglWingGetSpan, returns the wing span
  • tiglComponentIntersectionPoints (convenience function, vectorizes tiglComponentIntersectionPoint to improve speed)
  • tiglExportMeshedGeometryVTKSimple and tiglExportMeshedGeometryVTKSimple (replaced dummy implementation)
• Fixes:
  • Intersection calculation used by tiglComponentIntersectionPoint
  • Fixed incorrectly placed fuselage positionings
  • Fixed tiglWingComponentSegmentFindSegment returning segments that don't belong to the component segment
  • Workaround to buggy OpenCASCADE boolean fuse algorithms (which seems to be non-commutative). As a result, the fusing of the whole plane can be slower than before.
  • Removed warning about missing component segments
• TiGLViewer:
  • Display user defined component segment point
  • Improved speed of intersection calculation
  • Improved speed of shape triangulation
  • Display upper and lower shape of the wing
  • Display of the full model incorporating the symmetry properties of the CPACS components
  • Fixed detection, if CPACS file is changed while displayed in TiGLViewer
  • An optional control file can steer some basic settings like tesselation/triangulation accuracy (e.g. to tune speed of cpacs file opening)
  • STEP export
  • Settings Dialog (tesslation accuracy settings, background...)
  • New icon and color scheme