0022592: Data Exchange - Corrected processing of parameter read.iges.bspline.continuity

View Issue Details [ Jump to Notes ]

[ Issue History ] [ Print ]

Project

Category

View Status

Date Submitted

Last Update

0022592

Community

[OCCT] OCCT:Data Exchange

public

2011-06-10 16:24

2019-12-17 13:25

Reporter

szy

Assigned To

gka

Priority

normal

Severity

feature

Status

assigned

Resolution

reopened

Platform

All

OS Version

Product Version

Target Version

Fixed in Version

Summary

0022592: Data Exchange - Corrected processing of parameter read.iges.bspline.continuity

Description

RLN_fix405 (contribution).
- Summary: Corrected processing of parameter read.iges.bspline.continuity set to 0
- Detailed description: When read.iges.bspline.continuity set to 0 (with
Interface_Static::SetCVal()), the BSplineSurface is not enforced to become
periodic if it is closed what is done when it's set to 1. In some cases (e.g.
www.firstcadlibrary.com/seatmotor2.igs, entity 397) this leads to wrong
resulting shape after Shape Healing. Instead of added missing seam the face is
split into a compound of 2 invalid faces.

NOTE: See comments in the code, for consistency between TransferSplineSurface()
and TransferBSplineSurface() the former must have a code to convert to periodic
surfaces, and the latter - to IGESConvGeom for enforcing continuity.
It appeared that OCC IGES converter never enforced surface continuity though it
was expected to. It is up to the OCC team to verify if addition of these calls
will not break regressions.

====================================================
Branch OCC22592_IgestobrepSurfaceContinuity is created.

Tags

No tags attached.

Test case number

Attached Files

Relationships

Notes
(0089597) kgv (developer) 2019-12-17 13:25	> Branch OCC22592_IgestobrepSurfaceContinuity is created. Note that referred branch has been lost (probably it is in SVN).

Issue History
Date Modified	Username	Field	Change
2011-08-02 11:12	bugmaster	Category	OCCT:DTE => OCCT:Data Exchange
2011-11-24 15:50	szy	Assigned To	bugmaster => pdn
2011-11-24 15:50	szy	Status	acknowledged => assigned
2011-11-24 15:50	szy	Resolution	suspended => reopened
2011-11-24 15:50	szy	Fixed in Version	EMPTY =>
2011-11-24 15:50	szy	Description Updated	View Revisions
2019-12-11 15:29	pdn	Assigned To	pdn => gka
2019-12-17 12:08	kgv	Summary	Corrected processing of parameter read.iges.bspline.continuity => Data Exchange - Corrected processing of parameter read.iges.bspline.continuity
2019-12-17 13:25	kgv	Note Added: 0089597