Extruding a line in three.js

Question

I have a line (of points) and I want to extrude it.

extrude result

What would be a simple way to achieve this?

you can take a look at stemkoski.github.io/Three.js/Extrusion.html — gaitat
– gaitat, Commented Apr 30, 2015 at 13:39
I posted a feature request regarding this question because I have the same need: github.com/mrdoob/three.js/issues/24661 — JamesHoux
– JamesHoux, Commented Sep 17, 2022 at 21:53

Benny Schudel · Accepted Answer · 2015-04-30 13:40:55Z

3

I've found a solution. Not sure if this is the best way because three.js throws an info to use PlaneBufferGeometry instead.

function extrudePath( points, depth ) {
  var geometry = new THREE.PlaneGeometry(0, 0, points.length - 1, 1);
  var vertices = geometry.vertices; 

  for (var i = 0, l = points.length, p; i < l; i++) {
    p = points[i];

    vertices[i].x = vertices[i + l].x = p[0];
    vertices[i].y = vertices[i + l].y = p[1];

    vertices[i].z = p[2];
    vertices[i + l].z = p[2] + depth;
  }

  geometry.computeFaceNormals();

  return geometry;
}

answered Apr 30, 2015 at 13:40

Benny Schudel

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