ZhongMianAdmin/__test__/bim/js/builders/HelicoidBuilder.js

/*
 * HelicoidBuilder.js
 *
 *  @author realor
 */

import { ObjectBuilder } from './ObjectBuilder.js'
import { CordBuilder } from './CordBuilder.js'
import { Cord } from '../core/Cord.js'
import { CordGeometry } from '../core/CordGeometry.js'
import * as THREE from '../lib/three.module.js'

class HelicoidBuilder extends CordBuilder {
    constructor(radius = 1, laps = 4, advance = 1, segments = 32) {
        super()
        this.radius = radius
        this.laps = laps
        this.advance = advance
        this.segments = segments
    }

    performBuild(cord) {
        if (cord instanceof Cord) {
            const cordPoints = []
            const radius = this.radius
            const segments = this.segments
            const steps = Math.round(this.laps * segments)
            const angleByStep = (2 * Math.PI) / segments
            const heightByStep = this.advance / segments
            let angle = 0
            let z = 0

            for (let i = 0; i <= steps; i++) {
                let x = radius * Math.cos(angle)
                let y = radius * Math.sin(angle)
                z += heightByStep
                cordPoints.push(new THREE.Vector3(x, y, z))
                angle += angleByStep
            }
            const geometry = new CordGeometry(cordPoints)

            cord.updateGeometry(geometry)
        }
        return true
    }

    copy(source) {
        this.radius = source.radius
        this.laps = source.laps
        this.advance = source.advance
        this.segments = source.segments

        return this
    }
}

ObjectBuilder.addClass(HelicoidBuilder)

export { HelicoidBuilder }