//*******************************************************************
// Name: adv3calc.js
//
// IMPORTANT:
// is.js is essential to the operation of some of the functions in
// this file. is.js must be included in html if this file is to be
// used.
//
// Description:
// The JavaScript file that runs the third advanced energy
// calculator. This file must be included for the calculator to
// work.
//
// Author: Kevin Mueller mule@thinice.com
//
// Initials Date Description
// ------------------------------------------------------------------
// KRM 15-may-2001 Initial programming and design
//
//*******************************************************************
// Function to drop all but the first decimal place.
// Use only when displaying a result.
function dropDecimalPlaces(theNumber){
var theString, decimalIndex
theString = theNumber.toString();
decimalIndex = theString.indexOf('.');
if (decimalIndex != -1){
theString = theString.slice(0, decimalIndex+2);
return theString;
}else{
return theString;
}
}
// Function to drop all decimal places.
// Use only when displaying a result.
function dropAllDecimals(theNumber){
var theString, decimalIndex
theString = theNumber.toString();
decimalIndex = theString.indexOf('.');
if (decimalIndex != -1){
theString = theString.slice(0, decimalIndex);
return theString;
}else{
return theString;
}
}
var resultCalculated = 0; // Global set to 1 if result has been calculated and 0 if not
// Function to draw "Possible Activities" table. actStr is passed from the calculation function and
// is only used if resultCalculated = 1
var advActivitiesString = ""; // String containing the whole activities list page. Must be global to be sent to browser.
function advDrawActivities(actStr){
// Top of the page
advActivitiesString = "| Possible Activies |
|---|
";
if (!resultCalculated){
// HTML for table that appears first with description and "Display Activities" button.
advActivitiesString += " | ";
}else{
// HTML passed from the calculation function containing all of the activities and their respective times
advActivitiesString += actStr;
}
// Bottom of the page
advActivitiesString = advActivitiesString + " |
";
// Displaying the list frame
parent.frames['resultframe'].location.replace("javascript:parent.frames[0].advActivitiesString");
}
// Function to reshow the start "Possible Activities" table with the "Display Activities" button
function clearResult(){
if (!resultCalculated)
return;
resultCalculated = 0;
advDrawActivities();
}
// Function that calculates possible activities
function adv3Calculate(){
var calories, weight, weight_units, time, actTime, minMET, MET, workingString, resultString
var possibleActivityArray = new Array();
// First we get all of the values from the form
weight = parent.frames['inputframe'].document.form1.weight.value;
if (parent.frames['inputframe'].document.form1.weight_units[0].checked){
weight_units = parent.frames['inputframe'].document.form1.weight_units[0].value;
}else if (parent.frames['inputframe'].document.form1.weight_units[1].checked){
weight_units = parent.frames['inputframe'].document.form1.weight_units[1].value;
}
calories = parent.frames['inputframe'].document.form1.calories.value;
time = parent.frames['inputframe'].document.form1.time.value;
// Then we make sure the important ones are all filled in. If not, we alert the user.
if (weight == ""){
alert("You need to enter your weight (be honest).");
return;
}else if(weight_units == 'lbs'){
// Pounds to kilograms
weight = weight / 2.2;
}
if (calories == ""){
alert("You need enter how many calories you wish to burn.");
return;
}
if (time == ""){
alert("You need to enter how much time you wish to spend.");
return;
}else{
// minutes to hours
time = time / 60;
}
// Now we find the minimum MET that will fit the entered data
minMET = calories / (weight * time);
// Go through actObj and find which activities have an MET >= minMET
for (activity in actObj){
if (actObj[activity].met < minMET){
continue;
}
// Calculating time for each valid activity and puting number and time into an array
actTime = (calories / (actObj[activity].met * weight)) * 60;
possibleActivityArray[possibleActivityArray.length] = [activity, actTime];
}
// Now we sort the array from shortest to longest time and make the HTML for the Possible Actions table
if (!is_nav3 && !is_nav4){
// Old Navigators don't understand the sort method
possibleActivityArray.sort(function(a,b){return a[1] - b[1];});
}
resultCalculated = 1;
resultString = "";
if (possibleActivityArray.length == 0){
// If there are no possible activities, we say so
resultString = " |
";
advDrawActivities(resultString);
}else{
if (is_nav6up){
// This must be used for Netscape 6 due to an Access Denied bug when writing to another frame
// If there are possible activities, we put them into HTML and display them
for (var n = 0; n < possibleActivityArray.length; n++){
// if n is even the table row will have a dark background otherwise it will be white
if (n % 2 == 0){
//resultString += "blah";
resultString += "| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min |
";
}else{
//resultSring += "blah2";
resultString += "| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min |
";
}
}
advDrawActivities(resultString);
}else{
// This works for the other browsers
parent.frames['resultframe'].document.open();
parent.frames['resultframe'].document.writeln("| Possible Activies |
|---|
");
for (var n = 0; n < possibleActivityArray.length; n++){
// if n is even the table row will have a dark background otherwise it will be white
if (n % 2 == 0){
parent.frames['resultframe'].document.writeln("| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min | ");
}else{
parent.frames['resultframe'].document.writeln("| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min | ");
}
}
parent.frames['resultframe'].document.writeln(" |
");
parent.frames['resultframe'].document.close();
}
/*
// If there are possible activities, we put them into HTML and display them
for (var n = 0; n < possibleActivityArray.length; n++){
// if n is even the table row will have a dark background otherwise it will be white
if (n % 2 == 0){
//resultString += "blah";
resultString += "| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min |
";
}else{
//resultSring += "blah2";
resultString += "| - | " + actObj[possibleActivityArray[n][0]].examples + " | | " + dropAllDecimals(possibleActivityArray[n][1]) + " min |
";
}
alert(n);
}
alert("before draw");
advDrawActivities(resultString);
alert("after draw");
*/
}
}