Move 3D geometry to specific point and rotate in relationship to XY plane

[alzatin]

Hello!

I'm hoping to take an array of 3D geometries, lay each piece flat on the XY plane and translate them to specific points on the plane. I'm using a three js helper and I never specifically declared a plane with replicad. What would be the methods to use in order to translate my geometry to a specific point (without specifying a distance) and to rotate their longest side inline with the XY plane?

For example, if i had:

const { sketchCircle, sketchRectangle, loft } = replicad

const main = () => {
return sketchCircle(10,10).clone().extrude(100).translate(50,15,0).rotate(30,(5,5))
};

How would I go about setting the cylinder on its side and returning it to (0,0) on the XY?

[sgenoud]

I not sure I completely understand your question.

Part of the issue is that the library does not know what its side is - and what its position is. You can use the bounding box to have a rough estimate of the position (and what is the longest side). But you can get some weird issues.

If you have a more specific assumptions you want to bake into your code then it can be easier (for instance all the shapes are cylinders).