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OCCT/samples/mfc/standard/02_Modeling
Pasukhin Dmitry fe2595e21a Modeling - Refactor Evaluator classes to inline Utils and variant-based Adaptors (#935)
This commit completes the refactoring of geometry evaluator classes, replacing polymorphic Handle-based evaluators with inline template utilities and std::variant-based data storage in adaptor classes.

Key changes:

1. Removed GeomEvaluator and Geom2dEvaluator packages:
   - Deleted GeomEvaluator_Curve, GeomEvaluator_Surface base classes
   - Deleted GeomEvaluator_OffsetCurve, GeomEvaluator_OffsetSurface
   - Deleted GeomEvaluator_SurfaceOfExtrusion, GeomEvaluator_SurfaceOfRevolution
   - Deleted Geom2dEvaluator_Curve, Geom2dEvaluator_OffsetCurve

2. Added private utility headers (.pxx files) with inline template functions:
   - Geom_OffsetCurveUtils.pxx - offset curve evaluation
   - Geom_OffsetSurfaceUtils.pxx - offset surface evaluation
   - Geom_ExtrusionUtils.pxx - surface of extrusion evaluation
   - Geom_RevolutionUtils.pxx - surface of revolution evaluation
   - Geom2d_OffsetCurveUtils.pxx - 2D offset curve evaluation

3. Refactored GeomAdaptor_Curve:
   - Moved BezierData and BSplineData structs inside the class
   - Added std::variant<monostate, OffsetData, BezierData, BSplineData> for type-specific evaluation data
   - Removed separate myBSplineCurve and myCurveCache members
   - Updated all evaluation methods to use variant-based access

4. Refactored GeomAdaptor_Surface:
   - Changed ExtrusionData and RevolutionData to use Handle(Adaptor3d_Curve) instead of Handle(GeomAdaptor_Curve) for flexibility
   - Changed RevolutionData to store gp_Ax1 instead of separate AxisLoc/AxisDir
   - Updated OffsetData to store Handle(Geom_OffsetSurface) for osculating surface queries instead of creating new Geom_OsculatingSurface

5. Updated Geom_OsculatingSurface:
   - Renamed UOscSurf/VOscSurf methods to UOsculatingSurface/VOsculatingSurface for consistency with Geom_OffsetSurface public API

6. Fixed specialized adaptor classes:
   - GeomAdaptor_SurfaceOfLinearExtrusion - removed evaluator, uses variant
   - GeomAdaptor_SurfaceOfRevolution - removed evaluator, uses variant
   - Geom2dAdaptor_Curve - updated to use variant-based data
   - Adaptor2d_OffsetCurve - updated to use Geom2d_OffsetCurveUtils

7. Fixed Geom_SurfaceOfRevolution:
   - Updated utility calls to use gp_Ax1 parameter instead of separate XYZ

8. Added missing includes in dependent files:
   - Adaptor3d_HSurfaceTool.cxx - added GeomAdaptor_Curve.hxx
   - GeomAdaptor.cxx - added Adaptor3d_Surface.hxx, GeomAbs_SurfaceType.hxx
   - Extrema_GenExtPS.cxx - added Adaptor3d_Curve/Surface.hxx, GeomAbs_IsoType.hxx
   - TopOpeBRepTool_GEOMETRY.cxx - added Geom2dAdaptor_Curve.hxx
   - BRepAdaptor_Curve2d.cxx - updated ShallowCopy for variant

Benefits:
- Reduced virtual function call overhead in hot evaluation paths
- Better code locality with inline template functions
- Simplified class hierarchy without abstract evaluator base classes
- More efficient memory layout with variant instead of polymorphic handles
- Consistent method naming across related classes
2025-12-21 10:28:25 +00:00
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