Geometry incorrect using THREE.js example

[Glavin001]

Reproduce

1. Download STEP file from Downloads section in: https://www.servocity.com/stingray-2-servo-gearbox-0-34-sec-60-30rpm-700-oz-in-torque-900-rotation/
2. Go to https://5hk66o.csb.app/
3. Click Choose file and select the STEP file
4. Wait, a long time (#8 ). Tell Chrome multiple times it is OK to wait instead of reload the page, if Chrome asks.
5. See the results below.

Expected	Observed
https://3dviewer.net/	https://5hk66o.csb.app/
	✅
	:x:

Context

• Codesandbox code: https://codesandbox.io/s/convert-step-file-to-glb-with-three-js-occt-import-js-v0-3-5hk66o?file=/src/StepLoader.js
  • Was created based on the Three.js viewer code: https://github.com/kovacsv/occt-import-js/blob/main/examples/three_viewer.html#L28-L64

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Any help would be greatly appreciated!

[Glavin001]

Faster/much smaller STEP example showing incorrect geometry

STEP file from: https://www.servocity.com/3-10-press-fit-wheel-2-pack/

Expected	Observed
https://3dviewer.net/	https://5hk66o.csb.app/

[kovacsv]

Indeed, the example was not prepared to handle this big index numbers. See this change for the fix: 43e54b498b2074e0884db287cb678d86798e3e84.

[Glavin001]

Wow thank you for such a quick turnaround time to fix! 🎉