Skip to content

Update OCCT to V7_8_0 or higher for 2x import speeds #540

Description

@juliang22

I know there are already a few issues related to importing large files, but I wanted to open a new one specifically requesting an upgrade of occt-import-js to use OCCT version V7_8_0 or higher.

The V7_8_0 release includes notable improvements to STEP import performance that would offer a dramatic benefit to this project. For example, using this 46 MB file from GrabCAD, I observed import times improve from 228 s → 128 s — a substantial performance gain.

I realize there’s already an existing ticket to upgrade OCCT, but that issue doesn’t specify a target version or rationale. I wanted to document these performance improvements and related findings here for visibility. That ticket references OCCT tracker issue #33681, but I’m unable to log in to view it — could anyone summarize what it covers and whether it’s been resolved? After upgrading OCCT and running the prebuilt test suite, I noticed one of the surface tests is failing (possibly related to this closed ticket). It seems likely these issues are connected — hopefully the upstream OCCT fix addresses it by now.

Metadata

Metadata

Assignees

No one assigned

    Labels

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions