Extrude Glitch test

extrudeGlitch.js

const jscad = require('@jscad/modeling')

const { union } = jscad.booleans
const { extrudeLinear } = jscad.extrusions
const { hullChain } = jscad.hulls
const { circle } = jscad.primitives
const { vectorText } = jscad.text
const { translate } = jscad.transforms


// Build text by creating the font strokes (2D), then extruding up (3D).
const text = (message, extrusionHeight, characterLineWidth, segments) => {
  const lineRadius = characterLineWidth / 2
  const lineCorner = circle({ radius: lineRadius, segments: segments })

  const lineSegmentPointArrays = vectorText({ x: 0, y: 0, input: message }) // line segments for each character
  const lineSegments = []
  lineSegmentPointArrays.forEach((segmentPoints) => { // process the line segment
    const corners = segmentPoints.map((point) => translate(point, lineCorner))
    lineSegments.push(hullChain(corners))
  })
  const message2D = union(lineSegments)
  const message3D = extrudeLinear({ height: extrusionHeight }, message2D)
  return message3D;
}


const main = (params) => {
  let objs = [];
  
  objs.push(text("4", 2, 1, 26))
  objs.push(translate([-30,0,0], text("4", 2, 2, 20)))
  objs.push(translate([-80,0,0], text("7", 2, 2, 32)))
  objs.push(translate([-80,40,0], text("F", 2, 1, 25)))
  objs.push(translate([-30,40,0], text("N", 2, 2, 13)))
  
  return objs;
}

module.exports = { main }