// for the radar, let's use the doppler formula: 

// v = (\delta f * c)/()

​

​

// now make some sort of RR problems about a camera that is positioned x down the road and how fast to turn the camera

​

​

class Radar {

  constructor(x,y,a){

    this.pos = createVector(x.y);

    this.angle = a;

    this.angleDt = 0;

  }

  accelerate(acc){

    this.angleDt = 0;

  }

  update(){

    this.angle += this.angleDt;

  }

  render(){

    stroke(0)

    let size = 10;

    circle(this.pos.x,this.pos.y,size);

    push();

    rotate(this.angle);

    line(this.pos.x,this.pos.y,this.pos.x,this.pos.y+100)

    pop();

  }

}

​

class Car {

  constructor(x, y) {

    this.pos = createVector(x, y);

    this.vel = createVector(0, 0);

    this.acc = createVector(0, 0);

  }

​

  accelerate(acc) {

    this.acc.add(acc);

  }

​

  update() {

    // v = v_o + a*t

    this.vel.add(this.acc.mult(dt));

    // p = p_0 + v_0 * t + 1/2 * a * t^2

    this.pos.add(this.vel.mult(dt));

    this.acc.mult(0);

  }

  render(){

    stroke(0);

    let size = 10;

    circle(this.pos.x,this.pos.y,size);

  }

}

​

​

​

let car; 

let radar;

const dt = 1;

​

​

function setup() {

  createCanvas(400, 400);

  car = new Car(0,200);

  car.accelerate(1);

  radar = new Radar(200,200,0);

}

​

function draw() {

  background(220);

  car.update();

  car.render();

  radar.update();

  radar.render();

}

​

​

​

​

​

​