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26 2014

Open CASCADE Technology

Sergey Slyadnev . . . OPEN CASCADE, 2008 . . , .

(open source) , . Open CASCADE Technology ( OCCT), . OCCT, . , OCCT .

Open CASCADE Technology . , OCCT . , LGPL, .

OCCT

Open CASCADE Technology — , , . OCCT «» BRep (Boundary Representation). ACIS, Parasolid, CGM, C3D RGK. , OCCT . - ( , , ).

OCCT , (. 1). :

  • Foundation Classes OCCT, , , .
  • Modeling .
  • Mesh CAD-. , 3D.
  • Data Exchange (STEP, IGES ..).
  • Visualization CAD-, .
  • Application Framework (OCAF) OCCT.

. 1. Open CASCADE Technology.

— OPEN CASCADE S.A.S (OCC). . OCC , .

CAD- EUCLID, Matra Datavision, 1980- . 1993 CAS.CADE (Computer Aided Software for Computer Aided Design and Engineering), EUCLID QUANTUM — EUCLID. EUCLID QUANTUM 1996 . ( 1998 ) Matra Datavision - .

1999 Matra Datavision CAS.CADE, Open CASCADE. ( 2000 ) Matra Datavision OPEN CASCADE S.A.S. . 2003 Matra Datavision IBM, OPEN CASCADE S.A.S. — Principia. .

OPEN CASCADE S.A.S. OCCT. , , , OCCT . , , - , Git-.

(Modeling)

, OCCT (BRep) 3D. , . , , , , NURBS- . , , , . , BRep . , , . (. 2, ) « » ( . 2, ). BRep: , , . .

. 2. . , «» .

, , (vertices) (edges) (faces).

. 3. «» . 2.

OCCT ISO-10303 (STEP). 42 — «Integrated generic resource: Geometric and topological representation». , , CAD- , « », BRep-. «» BRep - OCCT. , «», «» «» ( , ).

, , BRep, ( ) CAD-, , , (voxel) CSG (Constructive Solid Geometry). , (, ).

BRep- «» , , . ( ), , — , . «» , .

. , (CAE) (FEA), (, , ).

OCCT . , , NURBS. NURBS, OCCT , , .. OCCT «» , , T- (subdivision surfaces).

. 4. B- OCCT.

. , . « » (U, V), , 2D- (p-curves). , .

. 5. .

BRep, OCCT, CAD-. , .

OCCT . ( ), .

. 6. NURBS-, .

()

— . OCCT , .

. 7. , .

. .

. 8. , .

, , , — OCCT «» .

. 9. .

. 10. .

. 11. .

. 12. .

OCCT. .

. 13. .

. 14. .

- ?

, OCCT — . , CAD.

Open CASCADE Technology CAD-. STEP, IGES, STL VRML. STEP , «-» ProSTEP (1998-1999 , TR 8-10), CAX-IF (2000-2002 , TRJ 3-10).

Shape Healing, - CAD- (, , , , ..).

, . , STEP Open CASCADE Technology «» , , .

. 15. STEP- , Open CASCADE Technology.

Open CASCADE Technology , OpenGL. , 3D- .

. 16. OpenGL.

. 17. (FPS ).

. 18. shading wireframe.

( NURBS , , ), ( , , , ..) . «» . , .

, , , . , , . 16000 , Open CASCADE Technology ( ). , OCCT — «» . , .

. 19 , OCCT, . , , .. . , EUCLID, OCCT .

. 19. OCCT 3
( 6.5.1, 6.5.2, 6.5.3, 6.5.4, 6.5.5, 6.6.0, 6.7.0 6.7.1).

Open CASCADE Technology — , . , . , , — , «» .

, OCCT . . . OCCT !

OPEN CASCADE S.A.S., 2014
OPEN CASCADE S.A.S. , , OPEN CASCADE S.A.S.


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