0027160: Weird results of the pipe algorithm - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0027160

Community

[OCCT] OCCT:Modeling Algorithms

public

2016-02-14 09:04

2017-12-05 16:59

Reporter

Roman Lygin

Assigned To

msv

Priority

normal

Severity

minor

Status

new

Resolution

open

Platform

OS

OS Version

Product Version

[OCCT] 6.9.1

Target Version

[OCCT] 7.4.0*

Fixed in Version

Summary

0027160: Weird results of the pipe algorithm

Description

The pipe algorithm produces a seemingly wrong result - the resulting surface is self-intersecting and has a U0 isoline (same as 2*PI) as self-intersecting in the beginning, although the path curve does not have such issues.

Another observation is that poles are very far distant from the path. This is a regular observation on the pipe algorithm.
Perhaps twisting and skewing has the same root-cause as in 0025426.

Steps To Reproduce

restore path.rle p
tuya r p 0.2; fit #see fit.png
clear r; mkface f r; isos f 20; wz #see wz.png
uiso u0 r 0 #wrong isoline, self-intersecting
cvalue p 0 x y z d1z d1y d1z d2x d2y d2z
line l1 x y z d1x d1y d1z
line l2 x y z d2x d2y d2z
trim tl1 l1 0 1
trim tl2 l2 0 0.2 #see all.png, 1st and 2nd derivative seem OK without issues that might lead to self-intersections

Tags

No tags attached.

Test case number

bugs modalg_7 bug27160

files.zip (36,959 bytes) 2016-02-14 09:04

fit.png (32,542 bytes) 2016-02-14 09:05

wz.png (33,685 bytes) 2016-02-14 09:05

all.png (37,359 bytes) 2016-02-14 09:05

path.png (27,974 bytes) 2016-02-14 09:08

bug27160 (694 bytes) 2017-09-04 15:33

bug27160_f.brep (158,025 bytes) 2017-09-04 15:36

Relationships

related to	0025426	new	ifv	Community	GeomFill_Pipe produces artefacts
parent of	0029080	new	msv	Open CASCADE	bopcheck work very slow.
Not all the children of this issue are yet resolved or closed.

Notes
(0070168) mkv (tester) 2017-09-04 15:35	Problem described in issue is reproduced on current state of OCCT.

Issue History
Date Modified	Username	Field	Change
2016-02-14 09:04	Roman Lygin	New Issue
2016-02-14 09:04	Roman Lygin	Assigned To	=> msv
2016-02-14 09:04	Roman Lygin	File Added: files.zip
2016-02-14 09:05	Roman Lygin	File Added: fit.png
2016-02-14 09:05	Roman Lygin	File Added: wz.png
2016-02-14 09:05	Roman Lygin	File Added: all.png
2016-02-14 09:06	Roman Lygin	Relationship added	related to 0025426
2016-02-14 09:08	Roman Lygin	File Added: path.png
2016-10-28 17:03	msv	Target Version	7.1.0 => 7.2.0
2017-07-21 11:34	msv	Target Version	7.2.0 => 7.3.0
2017-09-04 15:33	mkv	File Added: bug27160
2017-09-04 15:35	mkv	Test case number	=> bugs modalg_7 bug27160
2017-09-04 15:35	mkv	Note Added: 0070168
2017-09-04 15:36	mkv	File Added: bug27160_f.brep
2017-09-04 16:37	mkv	Relationship added	parent of 0029080
2017-12-05 16:59	msv	Target Version	7.3.0 => 7.4.0*

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