Orbit.js

/// <reference path="./node_modules/@types/p5/global.d.ts" />

function Orbit(x_, y_, r_, p, r_offset_, revs_, n) {

    this.x = x_;
    this.y = y_;
    this.r = r_;
    this.r_offset = parseFloat(r_offset_);
    this.parent = p;
    this.child = null;
    this.RevsAroundParent = revs_ || 1;
    this.angleIncr = 0;
    this.speed = 0; // (radians(pow(k, n - 1))) / resolution;
    this.angle = -PI / 2;
    this.startAngle = -PI / 2;
    this.n = n;

    this.addChild = function(childradius_, childr_offset_, childrevs_) {
        var newr = parseFloat(childradius_);
        var newx = this.x; //+ this.r + newr;
        var newy = this.y + this.r;
        this.child = new Orbit(newx, newy, newr, this, childr_offset_, parseFloat(childrevs_), n + 1);
        return this.child;
    }

    this.getSumOfRevolutions = function() {
        if (this.parent != null) {
            return this.RevsAroundParent * this.parent.getSumOfRevolutions();
        } else {
            return this.RevsAroundParent;
        }
    }

    this.SetOrbitPosition = function(acttime) {
        var parent = this.parent;
        if (parent != null) {
            var rsum = this.r + parent.r + this.r_offset;
            this.x = parent.x + rsum * cos(acttime * this.getSumOfRevolutions() + this.startAngle);
            this.y = parent.y + rsum * sin(acttime * this.getSumOfRevolutions() + this.startAngle);
            this.angle=acttime * this.getSumOfRevolutions() + this.startAngle
        }
    }
    this.show = function() {
        stroke(255, 100);
        strokeWeight(1);
        noFill();
        ellipse(this.x, this.y, this.r * 2, this.r * 2);
        var posx = this.x + this.r * cos(this.angle);
        var posy = this.y + this.r * sin(this.angle);
        strokeWeight(5);
        point(posx, posy);
    }

    this.show_2 = function(sketch) {
        sketch.stroke(255);
        sketch.strokeWeight(2);
        sketch.noFill();
        sketch.ellipse(this.x, this.y, this.r * 2, this.r * 2);
        if (this.parent!=null){
            var posx = this.x + this.r * cos(this.angle);
            var posy = this.y + this.r * sin(this.angle);
            sketch.strokeWeight(5);
            sketch.stroke(255,0,0);
            sketch.point(posx, posy);
        }
    }


}