Archived issue #0033435

Data Exchange, STEP import - change in colors of BRep

CommunityOCCT:Data Exchangeacknowledged8 public notes

Description

STEP import: change in colors of BRep

see the attached screenshots:
+ with OpenCascade 7.3.0 the colors are still fine
+ with OpenCascade 7.6.0 the colors are changed / mixed up

STEP file to investigate is attached

NOTE: pls ignore the red dots and the bounding box

Steps to reproduce

Import BRep of STEP file including color info

Public activity

8 archived notes

Participants are labeled by their role within this record.

01Author2023-07-27 18:04

OpenCascade 7.7.0 is still affected by this bug

02Author2023-07-28 17:58

attached the STEP file "Attachment 1 (STP)" to reproduce and investigate this bug

Attachment 1 (STP) (838,017 bytes)

03Author2023-09-14 13:53

just tested with OpenCascade v7.7.2 maintenance release
=> this bug is still reproducible with v7.7.2

04Commenter 12023-09-14 15:08

Commenter 2
Could you attache a screenshots?
I can't reproduce the problem w/o correct expectations

05Commenter 12023-09-14 15:11

The file imported correct as a NIST viewer.
I can't find out a problem

06Author2023-09-26 16:56

=== TMS ===
Designer-42552

07Author2025-06-17 14:43

=== JIRA ===
E3-4771

08Author2025-06-17 15:44

Hi Commenter 3
looks fine in FreeCAD 1.0.1 based on OpenCascade 7.8.1.

with our tool
+ with OpenCascade 7.3.0 the colors are still fine
+ with OpenCascade 7.6.0 the colors are changed / mixed up

What changed in OpenCascade from 7.3.0 => 7.6.0 regarding these colors, pls?

[signature removed]
Peter B.