Shearing or other multmatrix equivalent

[abejfehr]

Hello, I'd like to translate this OpenSCAD project into JSCAD: https://github.com/wbu/drawer_organizer

I've tried using the openscad-translator, but since the OpenSCAD code contains assignments I've resorted to doing it by hand instead.

The original makes use of multmatrix in a few places (like this). It looks like it does a shear and a translate conditionally.

Is there any way to shear in JSCAD or am I out of luck?

[hrgdavor]

Quickly thinking about it, it should be possible.
https://openjscad.xyz/docs/module-modeling_transforms.html#.transform

transforms allows you to supply your own transform matrix and shear should work fine.

notable difference is that in openscad it is two dimensional 4x4 array, and in jscad a simple 16 length array

const jscad = require('@jscad/modeling')
const {transform, translate} = jscad.transforms
const {cube} = jscad.primitives


const main = ()=>{
  const skew = 0.1
  const matrix = [
        1,skew,0,-skew,
        0,1,0,0,
        0,0,1,0,
        0,0,0,1 
        ]
  return [
     transform(matrix,cube({size:10})),
     translate([-20,0,0],cube({size:10})),
     ]
}

module.exports = {main}

[abejfehr]

Thanks for the quick reply, this works well!