Raycasting lines built with InterleavedBufferGeometry fails due to hardcoded vertex access. PR in comments.

[manthrax]

Description of the problem

Raycasting against lines built with InterleavedBufferGeometry fails due to hardcoded position access.

I'm including an example, and a fixed version of the Line.raycast function.

The fix repairs the hardcoded stride and lack of offset used in the position lookup.

https://codepen.io/manthrax/pen/KKzBEXa

Thanks to @usefulthink and Tom Delerue for finding/tracking down the problem!!

Three.js version

• Dev
• r120
• ...

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• macOS
• Linux
• Android
• iOS

Hardware Requirements (graphics card, VR Device, ...)

[manthrax]

I created a PR to fix this issue. #20366