Three.js Coordinate System

This topic has 4 replies, 4 voices, and was last updated 2 years, 7 months ago by Alexander Kovelenov.

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2017-12-18 at 9:43 pm #1360

Will Welker
Customer

What are the odds of changing the three.js coordinate system to match Blender?
I have noticed if I use JavaScript to add in procedural lines, I need to exchange the Y and Z and then change polarity on the new Z.
For example:
new v3d.Vector3( -102, 219, -87 )
Needs to be:
new v3d.Vector3( -102, -87, -219 )
If you made the change in the three.js engine to match Blender, would it work with 3ds Max also?
I could also just write a for loop to swap the numbers around before rendering.

2017-12-19 at 8:46 am #1363

Yuri Kovelenov
Staff

The current coordinate system in Verge3D follows the glTF standard, so unfortunately there is some inconvenience for application developers which we cannot overcome.

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2017-12-21 at 9:22 am #1395

Will Welker
Customer

There are a couple ways to work around this. One is to just write a loop that converts the arrays but if you just need to convert a few coordinates, you can write a spreadsheet formula that converts the coordinates into a copy/paste friendly format.

2018-01-22 at 6:53 pm #1737

jem
Customer

Will,
I just ran into this issue. At first, I could not understand the behavior that I was seeing, but I remembered this post of yours. It was an easy fix after that.
Thanks,
Jem

Jeremy Wernick

2021-09-19 at 6:07 pm #44822

Alexander Kovelenov
Staff

BTW, we have an article in Verge3D Wiki which explains differences between coordinate systems used by Verge3D and various modelling suites.

Soft8Soft Tech Chief
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