threejs-slice-geometry TypeScript port

This is a TypeScript port of the library threejs-slice-geometry.

Thanks to tdhooper for the awesome JavaScript implementation!

TypeScript port by Ikaros Kappler.

Three.js Slice Geometry

Slice three.js geometry with a plane.

Usage

Javascript

``javascript
var plane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
var geom = new THREE.BoxGeometry(1, 1, 1);
// The result will be a Gmetry instance and cannot be added to a three scene
geom = sliceGeometry(Gmetry.fromBufferGeometry(geom), plane); // This is new
var material = new THREE.MeshBasicMaterial({ wireframe: true });
// Call .toBufferGeometry here to go back to threejs
var mesh = new THREE.Mesh(geom.toBufferGeometry(), material);
scene.add(mesh);
`

Typescript

`typescript
import { sliceGeometry } from "threejs-slice-geometry-typescript";

const plane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
const geomBufferGeometry = new THREE.BoxGeometry(1, 1, 1);
// The result will be a Gmetry instance and cannot be added to a three scene
const geom = sliceGeometry(Gmetry.fromBufferGeometry(geomBufferGeometry), plane); // This is new
const material = new THREE.MeshBasicMaterial({ wireframe: true });
// Call .toBufferGeometry here to go back to threejs
const mesh = new THREE.Mesh(geom.toBufferGeometry(), material);
scene.add(mesh);
`

Compatibility with old THREEJS versions

Since threejs r125 the THREE.Geometry class no longer exist (deprecated, will be removed
in the future). See https://discourse.threejs.org/t/three-geometry-will-be-removed-from-core-with-r125/22401

I used a replacement class here from the ThreeGreometryHellfix.Gmetry repository. It is acually
based on the code of the old Geometry class and still works, but you should think about using
THREE.BufferGeometry in the future. Read about the pros and cons here
https://github.com/IkarosKappler/three-geometry-hellfix

Typescript (with threesjs <= r124)

`typescript
import { sliceGeometry } from "threejs-slice-geometry-typescript";

const plane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
const geom = new THREE.BoxGeometry(1, 1, 1);
geom = sliceGeometry(geom, plane);
const material = new THREE.MeshBasicMaterial({ wireframe: true });
const mesh = new THREE.Mesh(geom, material);
scene.add(mesh);
`

Javascript (with threesjs <= r124)

`javascript
var plane = new THREE.Plane(new THREE.Vector3(0, 0, 1), 0);
var geom = new THREE.BoxGeometry(1, 1, 1);
geom = sliceGeometry(geom, plane);
var material = new THREE.MeshBasicMaterial({ wireframe: true });
var mesh = new THREE.Mesh(geom, material);
scene.add(mesh);
`

Builds

CJS` builds from typescript

- https://github.com/IkarosKappler/threejs-slice-geometry-typescript/blob/master/dist/threejs-slice-geometry-main.js
- https://github.com/IkarosKappler/threejs-slice-geometry-typescript/blob/master/dist/threejs-slice-geometry-main.min.js

Original JS builds:

- http://tdhooper.github.io/threejs-slice-geometry/build/slice.js
- http://tdhooper.github.io/threejs-slice-geometry/build/slice.min.js

Examples

https://tdhooper.github.io/threejs-slice-geometry/examples