DLR-SC/tigl v3.0.0

TiGL 3.0.0

on GitHub

General Changes:

• CPACS 3 compatibility, including the new component-segment coordinate-system definition.
  The new cpacs definition of the wing structure allows more precise modelling of ribs and spars.

• Guide curve support for wings and fuselages for high-fidelity surface modeling according to the CPACS 3 defintion.

• Note: TiGL 3 does not yet contain the control surface device modeling. This will be included into TiGL 3.1.

• New modeling of nacelles.

• New modeling of pylons.

• New modeling of fuselage structure elements like doors, beams, frames and pressure bulkheads.

• Automated creation of CPACS reading and writing routines. This allows much
  better vality checks of the CPACS document.

• The "GetPoint" function of wings / fuselages operate now on the actual wing/fuselage shape (e.g. in case of guide curves). Before, these function operated on the linear loft, which is different from the actual shape. To switch back to the old behavior, the new function ::tiglWingSetGetPointBehavior and ::tiglFuselageSetGetPointBehavior must be used.
  Note: Using the actual smooth wing shape, ::tiglWingGetUpperPoint and ::tiglWingGetLowerPoint do not use the wing chord surface anymore as a reference coordinate system, but relies on the wing surface parametrization.
  This change was required, since there would be no other way to retrieve points around the leading edge, that is on front of the trapezoidal chord surface.

• Improved speed of ::tiglFuselageGetPoint function. Also, the paramter xsi is now interpreted as the relative
  curve parameter instead of the relative circumference.

• Improved robustness of fuselage loft computation.

• The TIGL library was renamed to tigl3. The TIGLViewer was renamed to tiglviewer-3.

• The windows builds are now using the Visual C++ 2015 Toolchain.

• TiGL now requires a C++ 11 capable compiler. Minimum required compilers are gcc 4.8 or Visual C++ 2015.

New API functions:

• ::tiglWingComponentSegmentPointGetEtaXsi computes the eta/xsi coordinates of a point on the component segment.
• ::tiglIntersectWithPlaneSegment computes the intersection of a CPACS shape (e.g. wing) with a plane of finite size.
• ::tiglGetCurveIntersection to compute the intersection of two curves.
• ::tiglGetCurveIntersectionPoint to query the intersection point(s) computed by ::tiglGetCurveIntersection.
• ::tiglGetCurveIntersectionCount returns the number of intersection points computed by ::tiglGetCurveIntersection.
• ::tiglGetCurveParameter projects a point onto a curve and returns the curve parameter of the point.
• ::tiglFuselageGetSectionCenter computes the center of a fuselage section defined by its eta coordinate.
• ::tiglFuselageGetCrossSectionArea computes the area of a fuselage section.
• ::tiglFuselageGetCenterLineLength computes the length of the centerline of the fuselage.
• ::tiglCheckPointInside checks, whether a point lies inside some object (defined by its uid).
• ::tiglExportFuselageBREPByUID and ::tiglExportWingBREPByUID
• ::tiglSetExportOptions sets exports-specific options
• ::tiglFuselageSetGetPointBehavior and ::tiglWingSetGetPointBehavior to adjust, whether the get point functions should return linear loft values or points on the actual shape.
• ::tiglSetDebugDataDirectory specifies the directory of the crashdump data.

Changed API:

• Removed deprectated intersection functions. These include
• tiglComponentIntersectionLineCount
• tiglComponentIntersectionPoint
• tiglComponentIntersectionPoints
• Removed function tiglExportVTKSetOptions. This is now replaced by ::tiglSetExportOptions
• tiglWingGetWettedArea now returns surface area of the wing, if the wing has no parent. Previously this caused a crash.

Fixes:

• TiGL Viewer: Fixed missing fonts on macOS

Language bindings:

• New python bindings allow to access the whole C++ API of TiGL. This bindings can be installed via conda.
• Python: the tiglwrapper.py module was renamed to tigl3wrapper.py. The Tigl object is renamed to Tigl3.
• Java: the tigl package moved from de.dlr.sc.tigl to de.dlr.sc.tigl3

TiGL Viewer:

• Display of reflection lines to inspect surface quality.
• Display of textured surfaces.
• Angle of perspective can be adjusted using the scripting API with setCameraPosition and setLookAtPosition.
  This allows e.g. to create videos of the geometry.
• Option to display face names.
• Number of U and V iso-lines can be adjusted independently.
• New design