632 lines
21 KiB
JavaScript
632 lines
21 KiB
JavaScript
class Particle{
|
|
constructor(id, x, y, vx, vy, m){
|
|
this.id = id;
|
|
this.x = x;
|
|
this.y = y;
|
|
this.vx = vx;
|
|
this.vy = vy;
|
|
this.m = m;
|
|
this.r = getRadius(m);
|
|
this.v = Math.sqrt(Math.pow(this.vx, 2) + Math.pow(this.vy, 2));
|
|
this.ek = [];
|
|
this.ek.push([0, 0]);
|
|
this.ax = 0
|
|
this.ay = 0;
|
|
}
|
|
}
|
|
|
|
// Functions to display or hide the welcome screen
|
|
function on() {
|
|
document.getElementById("playButton").style.display = "block";
|
|
}
|
|
|
|
function off() {
|
|
document.getElementById("playButton").style.display = "none";
|
|
}
|
|
|
|
var particles = [];
|
|
var ctx;
|
|
var canvas;
|
|
var table;
|
|
var a = 0;
|
|
var sa;
|
|
var ek = [];
|
|
var eff = 0.85;
|
|
var shot = new Audio("shot.mp3");
|
|
var wallhit = new Audio("wallhit.mp3");
|
|
var selector = document.getElementById('graph_type');
|
|
var sfr = 0;
|
|
var fr = 0;
|
|
var drawVelocityVector = false;
|
|
var measurementData = [];
|
|
var chartX = "measurement";
|
|
var chartY = "ekt"
|
|
measurementData.push('Measurement Number');
|
|
measurementData.push(0);
|
|
var bkg = new Image();
|
|
bkg.src = "pool.jpg"
|
|
|
|
ek.push('Kientic Energy (J)');
|
|
ek.push(0);
|
|
|
|
var measurement = 0;
|
|
|
|
// Load the google charts API
|
|
google.charts.load('current', {'packages':['corechart']});
|
|
|
|
function main(elem){
|
|
off();
|
|
canvas = document.getElementById(elem);
|
|
ctx = canvas.getContext("2d");
|
|
table = document.getElementById("particles");
|
|
|
|
fr = document.getElementById("fr").value;
|
|
//sfr = document.getElementById("sfr").value;
|
|
|
|
drawVelocityVector = document.getElementById("drawvelocity").checked;
|
|
|
|
reloadDropdowns();
|
|
|
|
// Set a callback to run when the charts API is loaded
|
|
google.charts.setOnLoadCallback(drawKEChart);
|
|
|
|
//canvas.addEventListener("mousedown", doMouseDown, false);
|
|
//canvas.addEventListener("onmouseup", doMouseUp, false);
|
|
|
|
// Loop through each particle every 10 milliseconds, create measurements every 1 second
|
|
setInterval(loop, 10);
|
|
setInterval(measureData, 1000);
|
|
}
|
|
|
|
// The main loop function that handles each particle
|
|
function loop(){
|
|
|
|
|
|
// Set volumes of sounds according to % energy transferred
|
|
eff = document.getElementById("effe").value/100;
|
|
shot.volume = 1 - eff;
|
|
wallhit.volume = 1 - eff;
|
|
|
|
// Acceleration = 9.8*uk (derived from F=ma, -uk*g*m=m*a)
|
|
a = -(9.8)*fr;
|
|
sa = -(9.8)*sfr;
|
|
|
|
chartX = document.getElementById("graphx").value;
|
|
chartY = document.getElementById("graphy").value;
|
|
drawVelocityVector = document.getElementById("drawvelocity").checked;
|
|
|
|
// Write the current kinetic energy, then reset to 0 for recalculation
|
|
document.getElementById("ek").innerHTML = ek[ek.length-1];
|
|
|
|
// Draw board, then process collisions.
|
|
draw();
|
|
separate();
|
|
detectCollisions();
|
|
|
|
// Iterate through each particle, to change it's velocity from acceleration, and position from velocity
|
|
particles.forEach((elem, i) => {
|
|
|
|
// Determine velocity vector and store for later use
|
|
elem.v = Math.sqrt(Math.pow(elem.vx, 2) + Math.pow(elem.vy, 2));
|
|
|
|
// Check for collisions with wall, and on collision set to - velocity
|
|
if(elem.x + elem.vx > canvas.width - elem.r || elem.x + elem.vx < elem.r){
|
|
elem.vx = -eff*elem.vx;
|
|
let wallHitAudio = wallhit.cloneNode();
|
|
wallHitAudio.volume = 1 - eff;
|
|
wallHitAudio.play()
|
|
|
|
// Fix bug of balls getting stuck in walls, if a ball is in a wall move it out
|
|
if(elem.x + elem.vx > canvas.width - elem.r){
|
|
elem.x = canvas.width - elem.r;
|
|
}
|
|
|
|
if(elem.x + elem.vx < elem.r){
|
|
elem.x = elem.r;
|
|
}
|
|
|
|
}
|
|
if(elem.y + elem.vy > canvas.height - elem.r || elem.y + elem.vy < elem.r){
|
|
elem.vy = -eff*elem.vy;
|
|
let wallHitAudio = wallhit.cloneNode();
|
|
wallHitAudio.volume = 1 - eff;
|
|
wallHitAudio.play()
|
|
|
|
// Fix bug of balls getting stuck in walls, if a ball is in a wall move it out
|
|
if(elem.y + elem.vy < elem.r){
|
|
elem.y = elem.r;
|
|
}
|
|
if(elem.y + elem.vy > canvas.width - elem.r){
|
|
elem.y = canvas.height - elem.r;
|
|
}
|
|
}
|
|
|
|
// Calculate Theta, and acceleration values based on the direction of the velocity vector
|
|
elem.theta = Math.atan2(elem.vx,elem.vy);
|
|
elem.sax = sa*Math.abs(Math.sin(elem.theta));
|
|
elem.say = sa*Math.abs(Math.cos(elem.theta));
|
|
|
|
elem.ax = a*Math.abs(Math.sin(elem.theta));
|
|
elem.ay = a*Math.abs(Math.cos(elem.theta));
|
|
|
|
// If the particle has enough velocity to be decelerated, decelerate it
|
|
if(!Math.abs(elem.vx) < Math.abs(elem.ax) || !Math.abs(elem.vy) < Math.abs(elem.ay)){
|
|
// Add acceleration to velocity each iteration
|
|
if(elem.vx > 0){
|
|
elem.vx += elem.ax;
|
|
}
|
|
else{
|
|
elem.vx -= elem.ax;
|
|
}
|
|
|
|
// Add acceleration to velocity each iteration
|
|
if(elem.vy > 0){
|
|
elem.vy += elem.ay;
|
|
}
|
|
else{
|
|
elem.vy -= elem.ay;
|
|
}
|
|
|
|
}else{
|
|
elem.ax = 0;
|
|
elem.ay = 0;
|
|
|
|
}
|
|
// Set velocity to zero if the acceleration is larger than it
|
|
if(Math.abs(elem.ay) > Math.abs(elem.vy) || Math.abs(elem.ax) > Math.abs(elem.vx)){
|
|
elem.ax = 0;
|
|
elem.ay = 0;
|
|
elem.vx = 0;
|
|
elem.vy = 0;
|
|
}else{
|
|
if((elem.vx == 0 || elem.vy == 0) && (Math.abs(elem.say) > Math.abs(elem.vy) || Math.abs(elem.sax) > Math.abs(elem.vx))){
|
|
elem.ax = 0;
|
|
elem.ay = 0;
|
|
elem.vx = 0;
|
|
elem.vy = 0;
|
|
}else{
|
|
// Each iteration add the velocity to the position
|
|
elem.x += elem.vx;
|
|
elem.y += elem.vy;
|
|
}
|
|
|
|
}
|
|
|
|
// Display data in the table
|
|
table.rows[i+1].cells[0].innerHTML = elem.m + " kg";
|
|
table.rows[i+1].cells[1].innerHTML = Math.abs(elem.vx.toPrecision(2));
|
|
table.rows[i+1].cells[2].innerHTML = Math.abs(elem.vy.toPrecision(2));
|
|
table.rows[i+1].cells[3].innerHTML = elem.ax.toPrecision(2);
|
|
table.rows[i+1].cells[4].innerHTML = elem.ay.toPrecision(2);
|
|
})
|
|
}
|
|
|
|
// Function to draw all particles on the canvas, and draw velocity vectors
|
|
function draw(){
|
|
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
|
ctx.drawImage(bkg, 0, 0, canvas.width, canvas.height);
|
|
particles.forEach((elem, i) =>
|
|
{
|
|
// Draw actual particle
|
|
ctx.beginPath();
|
|
ctx.fillStyle = "black";
|
|
ctx.strokeStyle = "black";
|
|
ctx.arc(elem.x, elem.y, elem.r, 0, 2*Math.PI);
|
|
ctx.fill();
|
|
ctx.stroke();
|
|
|
|
// Center mass in particle
|
|
ctx.font = elem.m*0.55 + 'px serif';
|
|
ctx.fillStyle = "white";
|
|
ctx.textAlign = "center";
|
|
ctx.fillText(elem.m+"kg", elem.x, elem.y + elem.r/4);
|
|
|
|
// Draw Velocity Vector, if this option is selected
|
|
if(drawVelocityVector){
|
|
ctx.beginPath();
|
|
ctx.strokeStyle = "red";
|
|
ctx.moveTo(elem.x, elem.y);
|
|
ctx.lineTo(elem.x + elem.v*Math.sin(elem.theta)* 10, elem.y + elem.v*Math.cos(elem.theta) * 10);
|
|
ctx.stroke();
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
// Function that returns the distance between the two particles given
|
|
function getDistance(p1, p2){
|
|
let xDist = Math.abs(p1.x - p2.x);
|
|
let yDist = Math.abs(p1.y - p2.y);
|
|
|
|
return Math.sqrt(Math.pow(xDist, 2) + Math.pow(yDist, 2));
|
|
}
|
|
|
|
var collisions = [];
|
|
|
|
// Function that will separate all particles on the canvas
|
|
function separate(){
|
|
collisions = [];
|
|
let noOverlap = false;
|
|
while(!noOverlap){
|
|
noOverlap = true;
|
|
particles.forEach((elem1, i) => {
|
|
for(var j = i+1; j < particles.length; j++){
|
|
elem2 = particles[j];
|
|
// Make sure not comparing the same element
|
|
if(elem1 != elem2){
|
|
// If the particles are overlapping
|
|
if(getDistance(elem1, elem2) < elem1.r + elem2.r){
|
|
collisions.push({element1: elem1, element2: elem2});
|
|
console.log("overlap");
|
|
|
|
// Move the particle back to its previous position, only if doing so will not put it inside of a wall
|
|
if(!elem1.x - elem1.vx > canvas.width - elem1.r || !elem1.x - elem1.vx < elem1.r)
|
|
elem1.x -= elem1.vx;
|
|
|
|
if(!elem2.x - elem2.vx > canvas.width - elem2.r || !elem2.x - elem2.vx < elem2.r)
|
|
elem2.x -= elem2.vx;
|
|
|
|
if(!elem1.y - elem1.vy > canvas.height - elem1.r || !elem1.y - elem1.vy < elem1.r)
|
|
elem1.y -= elem1.vy;
|
|
|
|
if(!elem2.y - elem2.vy > canvas.height - elem2.r || !elem2.y - elem2.vy < elem2.r)
|
|
elem2.y -= elem2.vy;
|
|
|
|
noOverlap = false;
|
|
|
|
draw();
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// Function that detects, and handles all collisions.
|
|
function detectCollisions(){
|
|
|
|
collisions.forEach((collision) => {
|
|
let shotAudio = shot.cloneNode()
|
|
shotAudio.volume = 1 - eff;
|
|
shotAudio.play()
|
|
elem1 = collision.element1;
|
|
elem2 = collision.element2;
|
|
|
|
// Check if the particles being compared are the same, if they are don't run collision detection or particles will collide with themselves.
|
|
if(elem1 != elem2){
|
|
elem1.px = elem1.x;
|
|
elem1.py = elem1.y;
|
|
elem2.px = elem2.x;
|
|
elem2.py = elem2.y;
|
|
|
|
// Store previous velocities, this will be used later when detecting static friction
|
|
elem1.pvx = elem1.vx;
|
|
elem1.pvy = elem1.vy;
|
|
elem2.pvx = elem2.vx;
|
|
elem2.pvy = elem2.vy;
|
|
|
|
// If the particles are still overlapping, separate them again
|
|
if(getDistance(elem1, elem2) < elem1.r + elem2.r){
|
|
console.log("overlap");
|
|
elem1.x -= elem1.vx;
|
|
elem1.y -= elem1.vy;
|
|
elem2.x -= elem2.vx;
|
|
elem2.y -= elem2.vy;
|
|
}
|
|
|
|
// Theta = angle of velocity
|
|
let theta1 = Math.atan2(elem1.vx,elem1.vy);
|
|
let theta2 = Math.atan2(elem2.vx,elem2.vy);
|
|
|
|
// Phi = angle of collision
|
|
let phi = Math.atan2((elem2.px - elem1.px),(elem2.py - elem1.py));
|
|
|
|
// Find rotated x & y components, with x axis parallel to the contact normal vector
|
|
let v1xr = elem1.v*Math.cos(theta1 - phi);
|
|
let v1yr = elem1.v*Math.sin(theta1 - phi);
|
|
let v2xr = elem2.v*Math.cos(theta2 - phi);
|
|
let v2yr = elem2.v*Math.sin(theta2 - phi);
|
|
|
|
// Use the rotated components to solve a 1 dimensional collision.
|
|
let v1fxr = eff*(v1xr*(elem1.m - elem2.m) + 2*elem2.m*v2xr)/(elem1.m + elem2.m);
|
|
let v2fxr = eff*(v2xr*(elem2.m - elem1.m) + 2*elem1.m*v1xr)/(elem2.m + elem1.m);
|
|
|
|
elem1.vy = v1fxr*Math.cos(phi) + v1yr*Math.cos(phi + Math.PI/2);
|
|
elem1.vx = v1fxr*Math.sin(phi) + v1yr*Math.sin(phi + Math.PI/2);
|
|
elem2.vy = v2fxr*Math.cos(phi) + v2yr*Math.cos(phi + Math.PI/2);
|
|
elem2.vx = v2fxr*Math.sin(phi) + v2yr*Math.sin(phi + Math.PI/2);
|
|
|
|
// Calculate new theta, and static acceleration for static friction checking
|
|
elem1.theta = Math.atan2(elem1.vx,elem1.vy);
|
|
elem1.sax = sa*Math.abs(Math.sin(elem1.theta));
|
|
elem1.say = sa*Math.abs(Math.cos(elem1.theta));
|
|
|
|
elem2.theta = Math.atan2(elem2.vx,elem2.vy);
|
|
elem2.sax = sa*Math.abs(Math.sin(elem2.theta));
|
|
elem2.say = sa*Math.abs(Math.cos(elem2.theta));
|
|
|
|
if((elem2.sax > elem2.vx || elem2.say > elem2.vy) && (elem2.pvx == 0 || elem2.pvy == 0)){
|
|
//elem2.vx = 0;
|
|
//elem2.vy = 0;
|
|
}
|
|
|
|
if(elem1.sax > elem1.vx || elem1.say > elem1.vy && (elem1.pvx == 0 || elem1.pvy == 0)){
|
|
//elem1.vx = 0;
|
|
//elem1.vy = 0;
|
|
}
|
|
|
|
}
|
|
});
|
|
}
|
|
|
|
// Function called when the add particle button is submitted
|
|
function addParticle(){
|
|
var form = document.getElementById("add");
|
|
var errMsg = "Errors: "; // String to store all errors with entered data
|
|
// Mass cannot be less than 1 error
|
|
if(form["mass"].value < 1){
|
|
errMsg += "Cannot Have Negative, or Zero Mass! "
|
|
}
|
|
// Mass is too large for the canvas size error
|
|
else if(getRadius(form["mass"].value)*2 + 10 > canvas.width || getRadius(form["mass"].value)*2 + 10 > canvas.height){
|
|
errMsg += "That mass is too large for this canvas! "
|
|
}else if(!form["xvel"].value || !form["yvel"].value || !form["mass"].value){
|
|
errMsg += "One or more values is not defined! "
|
|
}else if(form["xvel"].value > canvas.width - getRadius(form["mass"].value)*4 || form["yvel"].value > canvas.height - getRadius(form["mass"].value)*4){
|
|
errMsg += "The velocity of the particle you added is too large for that mass and this canvas size! "
|
|
}
|
|
// If no errors, add rows to the table and insert the particle into the array
|
|
else{
|
|
|
|
|
|
var xv = parseInt(form["xvel"].value)
|
|
var yv = parseInt(form["yvel"].value)
|
|
|
|
// Check if the acceleration is larger than the velocity, if so set velocity to 0 and not negative.
|
|
|
|
let n = 1;
|
|
if(particles.length > 0){
|
|
n = particles[particles.length-1].id +1;
|
|
}
|
|
|
|
// Find a position that is not ontop of another ball, or inside of a wall. This will randomize the position 9 times or until a successful location is discovered.
|
|
let validPos = false;
|
|
let numtries = 0;
|
|
let tx = 0; let ty = 0;
|
|
while(!validPos && numtries < 9){
|
|
numtries ++;
|
|
validPos = true;
|
|
tx = Math.round(Math.random()*((canvas.width - getRadius(parseInt(form["mass"].value))) - getRadius(parseInt(form["mass"].value)) - 5) + getRadius(parseInt(form["mass"].value)) + 5);
|
|
ty = Math.round(Math.random()*((canvas.height - getRadius(parseInt(form["mass"].value))) - getRadius(parseInt(form["mass"].value)) - 5) + getRadius(parseInt(form["mass"].value)) + 5);
|
|
let temp = new Particle(n, tx, ty, xv, yv, parseInt(form["mass"].value)+5);
|
|
particles.forEach(particle =>{
|
|
if(getDistance(particle, temp) < particle.r + temp.r){
|
|
validPos = false;
|
|
}
|
|
})
|
|
}
|
|
// if a valid position was found create it
|
|
if(validPos){
|
|
table.insertRow();
|
|
table.rows[table.rows.length -1].insertCell();
|
|
table.rows[table.rows.length -1].insertCell();
|
|
table.rows[table.rows.length -1].insertCell();
|
|
table.rows[table.rows.length -1].insertCell();
|
|
table.rows[table.rows.length -1].insertCell();
|
|
particles.push(new Particle(n, tx, ty, xv, yv, parseInt(form["mass"].value)));
|
|
}else{
|
|
errMsg += "Not enough room for that particle on the canvas! "
|
|
}
|
|
|
|
reloadDropdowns();
|
|
}
|
|
if(errMsg != "Errors: "){
|
|
alert(errMsg);
|
|
}
|
|
}
|
|
|
|
// Function that returns a radius, by multiplying the given mass by a constant
|
|
function getRadius(mass){
|
|
return mass*0.8;
|
|
}
|
|
|
|
// Function to remove a particle from the array by id
|
|
function remParticle(id){
|
|
alert("remove");
|
|
id = parseInt(id, 10);
|
|
|
|
particles = particles.filter(function(element, i){
|
|
eid = element.id;
|
|
|
|
if(id == eid){
|
|
table.deleteRow(i+1);
|
|
}
|
|
return id != eid;
|
|
});
|
|
console.log(particles);
|
|
}
|
|
|
|
// Function that adds the data at the current time to their respective array
|
|
function measureData(){
|
|
measurement++;
|
|
let ekt = 0;
|
|
particles.forEach((elem, i) => {
|
|
ekt += 0.5*Math.pow(elem.v, 2)*elem.m;
|
|
// Ek=0.5mv^2, add to total
|
|
elem.ek.push(0.5*Math.pow(elem.v, 2)*elem.m);
|
|
measurementData.push(measurement);
|
|
|
|
})
|
|
ek.push(ekt.toPrecision(6));
|
|
if(measurement > 100){
|
|
measurement = 0;
|
|
measurementData = [];
|
|
measurementData.push('Time (s)');
|
|
measurementData.push(0);
|
|
ek = [];
|
|
ek.push('Kientic Energy (J)');
|
|
ek.push(0);
|
|
|
|
particles.forEach((elem, i) => {
|
|
elem.ek = [];
|
|
elem.ek.push('Kientic Energy (J)');
|
|
})
|
|
}
|
|
drawKEChart();
|
|
}
|
|
|
|
// Function to draw the graph based on the selected values
|
|
function drawKEChart() {
|
|
//console.log(chartX);
|
|
let x = [];
|
|
if(chartX == "measurement"){
|
|
x = [...measurementData];
|
|
}else if(chartX == "ekt"){
|
|
x = [...ek];
|
|
}else{
|
|
x = [...particles[parseInt(chartX, 10)-1].ek];
|
|
}
|
|
|
|
let y = [];
|
|
if(chartY == "measurement"){
|
|
y = [...measurementData];
|
|
}else if(chartY == "ekt"){
|
|
y = [...ek];
|
|
}else{
|
|
y = [...particles[parseInt(chartY, 10)-1].ek];
|
|
}
|
|
|
|
var arr = [];
|
|
x.forEach((n, i) =>{
|
|
arr.push([n, y[i]]);
|
|
})
|
|
|
|
var data = google.visualization.arrayToDataTable(arr);
|
|
|
|
var options = {
|
|
title: 'Graph (Change X and Y Axis in the above form):',
|
|
legend: { position: 'bottom' }
|
|
};
|
|
|
|
var chart = new google.visualization.LineChart(document.getElementById('curve_chart'));
|
|
|
|
chart.draw(data, options);
|
|
|
|
}
|
|
|
|
// Function called when static friction is changed, to make sure a valid number is selected
|
|
function sfrChange(){
|
|
let element = document.getElementById("sfr");
|
|
if(element.value >= 1){
|
|
alert("The coefficient of static friction cannot be more than 1 for a billiard ball!");
|
|
element.value = sfr;
|
|
}else if(element.value <= fr){
|
|
alert("The coefficient of kinetic friction cannot be more than the coefficient of static friction!");
|
|
element.value = sfr;
|
|
}
|
|
else{
|
|
sfr = document.getElementById("sfr").value;
|
|
}
|
|
}
|
|
|
|
// Function called when kinetic friction is changed, to make sure a valid number is selected
|
|
function frChange(){
|
|
let element = document.getElementById("fr");
|
|
if(element.value >= 1){
|
|
alert("The coefficient of kinetic friction cannot be more than 1 for a billiard ball!");
|
|
element.value = fr;
|
|
}else if(element.value < 0){
|
|
alert("The coefficient of kinetic friction for a billiard ball cannot be negative!");
|
|
element.value = fr;
|
|
}
|
|
//else if(element.value >= sfr){
|
|
// alert("The coefficient of kinetic friction cannot be more than the coefficient of static friction!");
|
|
// element.value = fr;
|
|
//}
|
|
else{
|
|
fr = element.value;
|
|
}
|
|
}
|
|
|
|
// Function called when % effectiveness is changed, to make sure a valid number is selected
|
|
function effeChange(){
|
|
let element = document.getElementById("effe");
|
|
if(element.value > 100){
|
|
alert("There cannot be more than 100% efficient collisions! ");
|
|
element.value = eff*100;
|
|
}
|
|
else if(element.value < 0){
|
|
alert("There cannot be less than 0% effecient collisions! ");
|
|
element.value = eff*100;
|
|
}else{
|
|
eff = element.value/100;
|
|
}
|
|
}
|
|
|
|
// Function called to reset the dropdown menus when particles are added
|
|
function reloadDropdowns(){
|
|
|
|
let xSelect = document.getElementById("graphx");
|
|
for(let i = 0; i < xSelect.options.length; i++){
|
|
xSelect.options.remove(i);
|
|
i--;
|
|
}
|
|
|
|
let ySelect = document.getElementById("graphy");
|
|
for(let j = 0; j < ySelect.options.length; j++){
|
|
ySelect.options.remove(j);
|
|
j--;
|
|
}
|
|
|
|
let xtOption = document.createElement("option");
|
|
xtOption.text = "Time"
|
|
xtOption.value = "measurement"
|
|
|
|
let xeOption = document.createElement("option");
|
|
xeOption.text = "Total Kinetic Energy"
|
|
xeOption.value = "ekt"
|
|
|
|
let ytOption = document.createElement("option");
|
|
ytOption.text = "Time"
|
|
ytOption.value = "measurement"
|
|
|
|
let yeOption = document.createElement("option");
|
|
yeOption.text = "Total Kinetic Energy"
|
|
yeOption.value = "ekt"
|
|
|
|
xSelect.options.add(xtOption, 0);
|
|
xSelect.options.add(xeOption, 1);
|
|
|
|
ySelect.options.add(ytOption, 1);
|
|
ySelect.options.add(yeOption, 0);
|
|
|
|
particles.forEach((elem, i) =>{
|
|
let temp = document.createElement("option");
|
|
let temp2 = document.createElement("option");
|
|
temp.text = "Particle " + (i+1).toString() + " Kinetic Energy"
|
|
temp.value = i+1;
|
|
temp2.text = "Particle " + (i+1).toString() + " Kinetic Energy"
|
|
temp2.value = i+1;
|
|
xSelect.options.add(temp, xSelect.options.length-1);
|
|
ySelect.options.add(temp2, ySelect.options.length-1);
|
|
})
|
|
}
|
|
|
|
function setVelocity(event){
|
|
let x = event.clientX-25;
|
|
let y = event.clientX-25;
|
|
while(mouseIsDown){
|
|
console.log(x);
|
|
}
|
|
}
|
|
|
|
function doMouseDown(event){
|
|
mouseIsDown = true;
|
|
setVelocity(event);
|
|
}
|
|
|
|
function doMouseUp(event){
|
|
alert();
|
|
mouseIsDown = false;
|
|
} |