Node Programming Examples

<script src="https://code.jquery.com/jquery-1.6.2.min.js"></script>

node

$(function () {
    $.ajax({
        type: 'GET',
        url: 'https://ptx.transportdata.tw/MOTC/v2/Rail/TRA/Station?$top=10&$format=JSON', //欲呼叫之API網址(此範例為台鐵車站資料)
        dataType: 'json',
        headers: GetAuthorizationHeader(),
        success: function (Data) {
            $('body').text(JSON.stringify(Data));
        }
    });
});

stringset

node

/* Simple Hello World in Node.js */
var StringSet = require('stringset');
value = [ '"norm"',
  '"average"',
  '"average out"',
  '"mean"',
  '"ordinary"',
  '"middling"',
  '"mediocre"',
  '"fair"',
  '"medium"',
  '"intermediate"',
  '"modal"',
  '"median"' ]
var synonym_set =new StringSet(value.trim().split(",").slice(1,-1));
console.log("Hello World");

ssss

node

var CryptoJS = require("crypto-js");

var stringSecretData = 'Lorem ipsum dolor sit amet, ...'.repeat(2);
var password = 'RadwagSecretPassPhaserdg09acostam';
var encrypted = CryptoJS.AES.encrypt(stringSecretData, password).toString();
console.log(encrypted);

var decrypted = CryptoJS.AES.decrypt(encrypted.toString(), password);
console.log(decrypted.toString(CryptoJS.enc.Utf8));

nodeproject

node

/* Simple Hello World in Node.js */
console.log("Hello World");

node

/* Simple Hello World in Node.js */
var express= require("express");
var app=express();
app.get("/",function(req,res){
    res.render("www.google.com");
    
});
console.log("Hello World");

swfadsfd

node

/* Simple Hello World in Node.js */
console.log("Hello World");

sdfv

node

/* Simple Hello World in Node.js */
console.log("Hello World");

etret

node

/* Simple Hello World in Node.js */
console.log("Hello World");

Execute Node.js Online

node

/*Prototype course plotter!*/


Math.radians = function(degrees){
    return degrees * Math.PI / 180;
};
Math.degrees = function(radians){
    return radians / (Math.PI / 180)
};


//Global Parameters
var time = 0;
var dt = 0.5;
var trueAnom;
var alt;
var altAct;
var orbVel;
var velX;
var velY;
var g1;
var g;
var heading;
var GM = 6513917.8;

//Planet Parameters
var rad = 1000;
g1 = 1.63;

//Ship Parameters
var mass = 1000;
var thrust = 10000;
var maxAccel = thrust / mass*-1;

//Expandable Orbit Parameters as arrays
//var Ap[];
//var Pe[];
//var ApRa[];
//var PeRa[];
//var ecc1[];
//var SMA1[];
//var SmA[];
//var orbPeriod[];
//var ApVel[];
//var angVel[];

//Orbit Parameters
//Orbit 1
var Ap1 = 0;
var Pe1 = 0;
var ApRa1 = Ap1 + rad;
var PeRa1 = Pe1 + rad;
var ecc1 = (PeRa1 - ApRa1)/(PeRa1 + ApRa1);
var SMA1 = (ApRa1+PeRa1)/2;
var SmA1 = SMA1 * (Math.sqrt(1-(ecc1*ecc1)));
var orbPeriod1 = 2*Math.PI*Math.sqrt((SMA1*SMA1*SMA1)/GM);
var ApVel1 = Math.sqrt(GM*((2/ApRa1)-(1/SMA1)))
var angVel1 = 360/orbPeriod1;

//Orbit 2
var Ap2 = 200;
var Pe2 = 200;
var ApRa2 = Ap2 + rad;
var PeRa2 = Pe2 + rad;
var ecc2 = (PeRa2 - ApRa2)/(PeRa2 + ApRa2);
var SMA2 = (ApRa2+PeRa2)/2;
var SmA2 = SMA2 * (Math.sqrt(1-(ecc2*ecc2)));
var orbPeriod2 = 2*Math.PI*Math.sqrt((SMA2*SMA2*SMA2)/GM);
var ApVel2 = Math.sqrt(GM*((2/ApRa2)-(1/SMA2)));

//Landing Orbit
var Ap3 = 100;
var Pe3 = 50;
var ApRa3 = Ap3 + rad;
var PeRa3 = Pe3 + rad;
var ecc3 = (PeRa3 - ApRa3)/(PeRa3 + ApRa3);
var SMA3 = (ApRa3+PeRa3)/2;
var SmA3 = SMA3 * (Math.sqrt(1-(ecc3*ecc3)));
var orbPeriod3 = 2*Math.PI*Math.sqrt((SMA3*SMA3*SMA3)/GM);
var ApVel3 = Math.sqrt(GM*((2/ApRa3)-(1/SMA3)));

//Orbit Parameters
var orbVel;
var SMA;
var H;
var P;
var ecc;
var SmA;
var c;
var currentAp;
var currentPe;

//Start Parameters
var startLoc = 0;
var xStart = Math.cos(Math.radians(startLoc))*ApRa1;
var zStart = Math.sin(Math.radians(startLoc))*ApRa1;
var xStartVel = 0;//Math.sin(Math.radians(startLoc))*ApVel1;
var zStartVel =  0;//Math.cos(Math.radians(startLoc))*ApVel1;

//Launch Parameters
var launchState = true;
var turnEnd = 50;
var turnExp = 0.8;
    xStartVel = 0;
    zStartVel = 0;
if(Ap1 === 0){

}
var launchProfile = 0;

//Burn 1
var burn1dV = ApVel2-ApVel1;
var burn1Dur = Math.abs(burn1dV/maxAccel);
var burn1Start = ((orbPeriod1/2)-(burn1Dur/2));
var burn1End = ((orbPeriod1/2)+(burn1Dur/2)); 
//Burn 2
var burn2dV = ApVel3-ApVel2;
var burn2Dur = Math.abs(burn2dV/maxAccel);
var burn2Start = ((orbPeriod1/2)+(orbPeriod2/2)-(burn2Dur/2));
var burn2End = ((orbPeriod1/2)+(orbPeriod2/2)+(burn2Dur/2));

//Calculated Landing Parameters
var landingTime;
var landingPosX;
var landingPosZ;
var landingVelX;
var landingVelZ;
var landingVel; 

//End Parameters
var orbitPosX = [];
var orbitPosZ = [];
var orbitObj = {orbitPosX, orbitPosZ, dt};

//Orbit Variables
var posX;
var posZ;
var velX;
var velZ;
var gAccX;
var gAccZ;
var tAccX=0;
var tAccZ=0;
var accXSum;
var accZSum;
var alt;
var orbPeriodSum = orbPeriod1 + orbPeriod2;

//Initialise
posX = xStart;
posZ = zStart;
velX = xStartVel;
velZ = zStartVel*-1;

alt = Math.sqrt((posX*posX) + (posZ * posZ));
trueAnom = Math.atan2((posZ),posX);
g = (GM*-1)/(alt*alt);
accX = g*Math.cos(trueAnom);
accZ = g*Math.sin(trueAnom);

console.log("+++++++++ INPUT ORBIT PARAMETERS +++++++++++")
console.log("");
console.log("START ORBIT (ORBIT 1)");
console.log("Max Accel : " + maxAccel);
console.log("Apoapsis : " + Ap1 + "m");
console.log("Periapsis : " + Pe1 + "m");
console.log("Orbital Period : " + orbPeriod1 + "s");
console.log("Eccentricity : " + ecc1);
console.log("Angular Velocity : " + angVel1 + "deg/s");
console.log("");
console.log("TRANSFER ORBIT (ORBIT 2)")
console.log("Apoapsis : " + Ap2 + "m");
console.log("Periapsis : " + Pe2 + "m");
console.log("Orbital Period : " + orbPeriod2 + "s");
console.log("Eccentricity : " + ecc2);


console.log("");
console.log("++++++++ INPUT START PARAMETERS ++++++++++++");
console.log("");
console.log("Start X :" + posX + " Start Z :" + posZ);
console.log("Start Vel : " + Math.sqrt((velX*velX)+(velZ*velZ)));
console.log("Burn 1 dV : " + burn1dV);
console.log("Burn 1 Duration :" + burn1Dur);
console.log("Burn 2 dV : " + burn2dV);
console.log("Burn 2 Duration :" + burn2Dur);
console.log("");

var check = false;

var manouverCount = 3;

//manouver manager loop
for (var i = 0; i<manouverCount; i++){
    
    
    
    
    
}



//calculation loop
for(var i = 0; i<(((orbPeriod1/2)+(orbPeriod2/2)+(orbPeriod3/2))/dt);i++){
    
    //Current State Calculations
    time = time + dt;
    alt = Math.sqrt((posX*posX) + (posZ*posZ));
    g = (GM*-1)/(alt*alt);
    trueAnom = Math.atan2((posZ),posX);
    gAccX = g*Math.cos(trueAnom);
    gAccZ = g*Math.sin(trueAnom);
    heading = Math.radians(Math.degrees(trueAnom)+90);
    
    

    //Burn  Calculations
    //Circularisation Burn(s)
    /*
    if(time >= burn1Start && time <= burn1End){
        tAccX = Math.abs(maxAccel * Math.cos(heading));
        tAccZ = Math.abs(maxAccel * Math.sin(heading));
        var tTot = Math.sqrt((tAccX*tAccX)+(tAccZ*tAccZ));
        //console.log("burn1 " + time)
    }else if(time >= burn2Start && time <= burn2End){
        tAccX = -1*Math.abs(maxAccel * Math.cos(heading));
        tAccZ = -1*Math.abs(maxAccel * Math.sin(heading));
        var tTot = Math.sqrt((tAccX*tAccX)+(tAccZ*tAccZ));
        //console.log("burn2 " + time)
    }//else if(){}
    else{tAccX =0;tAccZ =0;}
    */
    
    //Launch Burn
    if(launchState === true){
        if(currentPe < PeRa2){
            console.log("O.o");
            launchProfile = Math.pow((alt-rad)/turnEnd, turnExp)+(Math.radians(startLoc));
            tAccX = -1*(maxAccel * Math.cos(launchProfile));
            tAccZ = -1*(maxAccel * Math.sin(launchProfile));
            console.log(alt-rad);
            console.log("Current Pe : " + currentPe);
            console.log("Current Ap : " + currentAp);
            console.log("Current Lean Angle : " + launchProfile);
            console.log("time : " + time);
        }
    }
    
    
    //Acc, Vel, Pos Calculations
    accXSum = gAccX - tAccX;
    accZSum = gAccZ - tAccZ;
    velX = velX + ((accXSum))*dt;
    velZ = velZ + ((accZSum))*dt;
    posX = posX + ((velX))*dt;
    posZ = posZ + ((velZ))*dt;
    orbitPosX[i] = posX;
    orbitPosZ[i] = posZ;
    
    //Current Orbit Calculations
    orbVel = Math.sqrt((velX*velX)+(velZ*velZ));
    SMA = 1/((2/alt)-((orbVel*orbVel)/GM));
    H = (posX*velZ)-(posZ*velX);
    P=(H*H)/GM;
    ecc = Math.sqrt(1-P/(SMA));
    SmA = SMA*Math.sqrt(1-(ecc*ecc));
    c=Math.sqrt((SMA*SMA)-(SmA*SmA));
    currentAp = SMA + c;
    currentPe = SMA -c;
    
   /* if(alt<995&&check == false){
        check = true;
        landingTime = time;
        landingPosX = posX;
        landingPosZ = posZ;
        landingVelX = velX;
        landingVelZ = velZ;
        landingVel = Math.sqrt((landingVelX*landingVelX)+(landingVelZ*landingVelZ));
    }
    */
    
    
}
        
console.log("");
console.log("+++++++++ INTERCEPT FLIGHT PARAMETERS +++++++++++");
console.log("");
console.log("Number of Calculations : " + i);
console.log("Total Mission Time : " + time);
console.log("");
console.log("FINAL POSITION");
console.log("Time = " + time);
console.log("pos X = " + posX + " pos Z = " + posZ);
console.log("acc X = " + accXSum + " acc Z = " + accZSum);
console.log("vel X = " + velX + " vel Z = " + velZ);
console.log("Alt = " + alt);
console.log("Stored Position X = " + orbitObj.orbitPosX[i-1]);
console.log("Stored Position Z = " + orbitObj.orbitPosZ[i-1]);
console.log("Alt from stored = " +  Math.sqrt(((orbitObj.orbitPosX[i-1])*(orbitObj.orbitPosX[i-1]))+((orbitObj.orbitPosZ[i-1])*(orbitObj.orbitPosZ[i-1]))));
console.log("Intercept Apoapsis = " + currentAp);
console.log("Intercept Periapsis = " + currentPe);


console.log("");
console.log("++++++++++++++ CALCULATED LANDING PARAMETERS ++++++++++++++++");
console.log("");
console.log("Landing Time : " + landingTime);
console.log("Landing Position X : " + landingPosX);
console.log("Landing Position Z : " + landingPosZ);
console.log("Landing Velocity X : " + landingVelX);
console.log("Landing Velocity Z : " + landingVelZ);
console.log("Landing Velocity Magnitude : " + landingVel);

project

node

/* Simple Hello World in Node.js */
console.log("Hello World");

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