three.js/src/extras/core/Shape.js

import { PathPrototype } from './PathPrototype.js';
import { Path } from './Path.js';

/**
 * @author zz85 / http://www.lab4games.net/zz85/blog
 * Defines a 2d shape plane using paths.
 **/

// STEP 1 Create a path.
// STEP 2 Turn path into shape.
// STEP 3 ExtrudeGeometry takes in Shape/Shapes
// STEP 3a - Extract points from each shape, turn to vertices
// STEP 3b - Triangulate each shape, add faces.

function Shape() {

	Path.apply( this, arguments );

	this.type = 'Shape';

	this.holes = [];

}

Shape.prototype = Object.assign( Object.create( PathPrototype ), {

	constructor: Shape,

	getPointsHoles: function ( divisions ) {

		var holesPts = [];

		for ( var i = 0, l = this.holes.length; i < l; i ++ ) {

			holesPts[ i ] = this.holes[ i ].getPoints( divisions );

		}

		return holesPts;

	},

	// Get points of shape and holes (keypoints based on segments parameter)

	extractAllPoints: function ( divisions ) {

		return {

			shape: this.getPoints( divisions ),
			holes: this.getPointsHoles( divisions )

		};

	},

	extractPoints: function ( divisions ) {

		return this.extractAllPoints( divisions );

	}

} );


export { Shape };