@dromney/gear-gen/dist/generators/random.js

A set of types and pattern generators for working with front-end gears

import { Gear } from "../core/Gear.js";
const randomInRange = (min, max) => Math.floor(Math.random() * (max - min + 1) + min);
export function RandomGearsDiagonalLeft() {
    const minPitch = 7;
    const maxPitch = 12;
    const pitch = randomInRange(minPitch, maxPitch);
    const minNumberofGears = 8;
    const maxNumberofGears = 30;
    const numberOfGears = randomInRange(minNumberofGears, maxNumberofGears);
    const minPressureAngle = 22;
    const maxPressureAngle = 32;
    const pressureAngle = randomInRange(minPressureAngle, maxPressureAngle);
    const minNumberOfTeeth = 8;
    const maxNumberOfTeeth = 20;
    const minJointAngle = -90;
    const maxJointAngle = 0;
    const gears = [];
    const firstGear = new Gear({
        N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
        P: pitch,
        PADeg: pressureAngle
    });
    gears.push(firstGear);
    for (let i = 1; i <= numberOfGears; i++) {
        const gear = new Gear({
            N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
            parent: gears[i - 1],
            jointAngleDeg: randomInRange(minJointAngle, maxJointAngle)
        });
        gears.push(gear);
    }
    return gears;
}
export function RandomSpiralGears(n) {
    const minPitch = 7;
    const maxPitch = 12;
    const pitch = randomInRange(minPitch, maxPitch);
    const minNumberOfTeeth = 8;
    const maxNumberOfTeeth = 15;
    const minPressureAngle = 22;
    const maxPressureAngle = 32;
    const pressureAngle = randomInRange(minPressureAngle, maxPressureAngle);
    const gears = [];
    const firstGear = new Gear({
        N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
        P: pitch,
        PADeg: pressureAngle
    });
    gears.push(firstGear);
    let a = 0;
    for (let i = 1; i <= n; i++) {
        const gear = new Gear({
            N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
            parent: gears[i - 1],
            jointAngleDeg: a
        });
        gears.push(gear);
        a -= 17;
    }
    return gears;
}
export function RandomBackAndForth(rasters) {
    const minPitch = 9;
    const maxPitch = 12;
    const pitch = randomInRange(minPitch, maxPitch);
    const minNumberOfTeeth = 8;
    const maxNumberOfTeeth = 10;
    const minPressureAngle = 24;
    const maxPressureAngle = 28;
    const pressureAngle = randomInRange(minPressureAngle, maxPressureAngle);
    const gears = [];
    const firstGear = new Gear({
        N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
        P: pitch,
        PADeg: pressureAngle
    });
    gears.push(firstGear);
    const perRaster = 7;
    let a = 0;
    for (let i = 1; i <= perRaster * rasters; i++) {
        if (i % perRaster === 0)
            a = -90;
        else if (i % (2 * perRaster) < perRaster)
            a = -15;
        else
            a = -175;
        const gear = new Gear({
            N: randomInRange(minNumberOfTeeth, maxNumberOfTeeth),
            parent: gears[i - 1],
            jointAngleDeg: a
        });
        gears.push(gear);
    }
    return gears;
}