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data.js
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// dataset list functions
let databox = '<div class="data_dragger" draggable="true" ondragend="dragEnd()" ondragover="dragOver_page(event)" ondragstart="dragStart(event)" id="#_drag"></div>'
+ '<div class="rowsplit">'
+ '<div class="controls">'
+ '<input id="#_f" type="file" name="name" style="display: none;" onchange="load_file(#)"/>'
+ '<input type="text" id="#_name" style="width:110px" value="dat#" onchange="matrix_changed=true">'
+ '<div id="#_col" style="display:inline;width:19px;height:19px;"></div>'
+ '<button id="#_c" checked="true" onclick="not_all_eye("time_control_canvas");"> <i class="fas fa-eye"></i> </button>'
+ '<input class="num" type="number" id="#_g" style="width:50px" value = 1 step=1 min=1 max=20>'
+ '<div class="tool inner_button"><button id="#_x" onclick="delete_item(#);"> <i class="far fa-trash-alt"></i> </button><span class="tip">Delete the sample file</span></div>'
+ '<div class="tool inner_button"><button onclick="download_toi(#)"> <i class="far fa-save"></i> </button><span class="tip">Save the sample file</span></div>'
+ '<div class="time_controls" ><ol id="#_toi" class="toi_list">'
+ '<li onclick="set_toi(#, 0)" id="#_twi_0" class="toi_selected"><center>All</center></li>'
+ '<li id="#_addtoi"><div class="tool inner_button"><button onclick="new_toi(#,0,1)"><center><i class="fas fa-plus"></i></center></button><span class="tip">Add new TOI</span></div></li>'
+ '<li id="#_loadtois"><div class="tool inner_button"><input id="#_toi_f" type="file" name="name" style="display: none;" onchange="load_toi_list(#)"/> <button onclick="click_load_toi_list(#)"><center><i class="fas fa-file-upload"></i></center></button><span class="tip">Upload new TOI file</span></div></li>'
+ '<li id="#_deltoi"><div class="tool inner_button"><button onclick="delete_selected_toi(#)"><center> <i class="far fa-trash-alt"></i> </center></button><span class="tip">Delete the selected TOI</span></div></li></ol>'
+ '<div id="#_nametoi_box" style="display:none;"><input type="text" id="#_nametoi" style="width:80px" disabled=true/> </div></div></div>'
+ '<div class="timebox" id="tb"> <input type="text" id="#_left" value=12:34 onchange="update_timeslider(#)"> <div id="#_sl" class="timeslider"></div> <input type="text" id="#_right" value=12:34:03 onchange="update_timeslider(#)"></div></div></div> ';
let twibox = '<div class="dragger" draggable="true" ondragend="dragEnd()" ondragover="dragOver_page(event)" ondragstart="dragStart(event)" id="#_twi_dragger"></div>'
+ '<div class="controls">'
+ '<input type="text" id="#_twi_name" style="width:110px" value="twi#">'
+ '<div id="#_col" style="display:inline;width:19px;height:19px;"></div>'
+ '<button id="twi_#_c" checked="true" onclick="not_all_eye("showtwis")> <i class="fas fa-eye"></i> </button>'
+ '<input class="num" type="number" id="#_twigroup" style="width:50px" value = 1 step=1 min=1 max=20>'
+ '<div class="tool inner_button"><button id="#_x" onclick="delete_twi(#);"> <i class="far fa-trash-alt"></i> </button><span class="tip">Delete the TWI</span></div>';
var fileCounter = 0; var filelist; var groupCounter = 0; var relative_w = 0; var relative_h = 0;
var err_row = []; var err_msg = ''; var err_count = 0; var cluster_warn = '';
var limit_select = false //used for cropping
var pos_ratio = 1 // for data positioning on screen
var inv_ratio = 1 // for position on screen to data
var height_adjust = 0 // for cropped lens position
var width_adjust = 0 // for cropped lens position
var backimage_empty = true //check for uploaded backimage
var crop_stack = [ [0, 0, 0, 0, false] ];
var ground_x = 0; // to maintain centre when cropped
var ground_y = 0; // to maintain centre when cropped
let base_twis = [];
let order_twis = [0];
let toi_start = -1;
let toi_end = 0;
let previous_toi_name = "";
let current_toi_id = 0;
let tois_to_be_added = [];
class Node {
constructor(data) {
this.data = data;
}
print() {
return this.data;
}
}
class Queue {
constructor() {
this.elements = [];
}
enqueue(node) {
this.elements.push(node);
}
dequeue() {
if(this.elements.length > 0) {
return this.elements.shift();
} else {
return 'Queue underflow';
}
}
isEmpty() {
return this.elements.length == 0;
}
front() {
if(this.elements.length > 0) {
return this.elements[0];
} else {
return "The Queue is empty!";
}
}
size() {
return this.elements.length;
}
print() {
return JSON.stringify(this.elements);
}
}
function new_file(){
document.getElementById("dataset_load_txt").innerHTML = "Loading...";
document.getElementById("dataset_button").disabled = true;
filelist = document.getElementById('new_f').files;
if(filelist.length == 0){return;}
if(fileCounter == 0){groupCounter = (groupCounter)%GROUPINGS.length + 1;}
tois_to_be_added.splice(0, tois_to_be_added.length);
var reader = new FileReader();
reader.value_id = fileCounter;
reader.onload = function(event) {
var newdata = new_dataset(cid);
try{
newdata.name = filelist[this.value_id].name.split('.')[0];
newdata.group = groupCounter;
str = reader.result;
table = str.split('\n');
newdata.t = [];
newdata.x = [];
newdata.y = [];
err_row = [newdata.name];
err_count = 0;
var last_rt = 0;
var first_reorder = true;
for (var i=0; i<table.length; i++) {
r = table[i].split('\t');
if(r.length >= 3){
var rt = parseFloat(r[0]);
var rx = parseFloat(r[1]);
var ry = parseFloat(r[2]);
let r_toiname = "";
if(r.length >= 4){
r_toiname = String(r[3].trim());
}
// console.log("previous_toi_name: "+previous_toi_name+", r_toiname: "+r_toiname+", r_toiname.length: "+r_toiname.length+", toi_start: "+toi_start+", toi_end: "+toi_end+", "+/^[a-zA-Z0-9-_()]+$/.test(r_toiname)+", space: "+/^\s+$/.test(r_toiname));
if(r_toiname != null && r_toiname != undefined && (r_toiname.length == 0 || /^\s+$/.test(r_toiname) || (r_toiname.length > 0 && /^[a-zA-Z0-9-_()]+$/.test(r_toiname))) &&
r_toiname != previous_toi_name) {
if(previous_toi_name != "" && toi_start >= 0 && toi_end > toi_start) {
// toi_end = rt[]
//add toi (previous_toi_name, ...)
//before inserting to array, check the toi name, append bracket if the name already appears in the array
let names = tois_to_be_added.map(x => x.name);
if(names.indexOf(previous_toi_name)>-1)
previous_toi_name = get_non_duplicate_name(names, previous_toi_name);
tois_to_be_added.push({range:[toi_start, toi_end], name:previous_toi_name+''});
if(r_toiname.length > 0 && /^[a-zA-Z0-9-_()]+$/.test(r_toiname)) {
toi_start = rt;
toi_end = 0;
previous_toi_name = r_toiname;
}
else {
toi_start = -1;
toi_end = 0;
previous_toi_name = "";
}
// console.log("tois_to_be_added: "+JSON.stringify(tois_to_be_added));
}
else if(r_toiname.length > 0 && /^[a-zA-Z0-9-_()]+$/.test(r_toiname)){
toi_start = rt;
previous_toi_name = r_toiname;
}
else {
toi_start = -1;
toi_end = 0;
previous_toi_name = "";
}
}
if(toi_start >= 0)
toi_end = rt;
// if there is content that is not a number, skip
if((r[0].trim().length>0 && isNaN(rt)) || (r[1].trim().length>0 && isNaN(rx)) || (r[2].trim().length>0 && isNaN(ry)) ){
if(err_row.length==1){err_row.push(i+1)}
err_count+=1;
}else{
if(rt<last_rt){
var pos = index_location(newdata.t, rt);
newdata.t.splice(pos, 0, rt);
newdata.x.splice(pos, 0, rx);
newdata.y.splice(pos, 0, ry);
if(first_reorder){
err_msg += ' ' + err_row[0] + ': data was reordered by the first column (time)\n';
first_reorder = false;
}
} else {
newdata.t.push(rt);
newdata.x.push(isNaN(rx) ? 0 : rx);
newdata.y.push(isNaN(ry) ? 0 : ry);
}
last_rt = newdata.t[newdata.t.length - 1];
}
}else if(r[0].length>0){
if(err_row.length==1){err_row.push(i+1)}
err_count+=1;
}
}
if(previous_toi_name != "" && toi_start >= 0 && toi_end > toi_start) {
// toi_end = rt[]
//add toi (previous_toi_name, ...)
let names = tois_to_be_added.map(x => x.name);
let sequence = 0;
if(names.indexOf(previous_toi_name)>-1)
previous_toi_name = get_non_duplicate_name(names, previous_toi_name);
//real_range is the ground truth of the toi start time and end time relating to real timeline (non-cumulative one)
tois_to_be_added.push({range:[toi_start, toi_end], name:previous_toi_name+''});
}
// console.log('err_count', err_count, 'err_msg',err_msg , 'newdata', newdata)
if(newdata.t.length>1 && newdata.t.length != err_count){
cluster_dataset(newdata);
newdata.tois[0].real_range[0] = newdata.t_start;
newdata.tois[0].real_range[1] = newdata.t_end;
newdata.initialised = true;
if(err_row.length>1){err_msg += ' ' + err_row[0] + ': ' + err_count + ' row(s) skipped with first issue at row ' + err_row[1] + '\n';}
}else{ err_msg += ' ' + err_row[0] + ': no data was able to be uploaded\n';}
}catch( error ){ console.error(error); }
previous_toi_name = "";
toi_start = -1;
toi_end = 0;
if( newdata.initialised ){ // new load is valid, accept it
var id = DATASETS.length; DATASETS.push(newdata); VIDEOS.push({}); cid = DATASETS.length;
q = databox.replace(/#/g, id);
var node = document.createElement("li");
node.innerHTML = q; node.id = id;
node.setAttribute('onclick', "select_data("+id+")");
node.setAttribute('class', 'data_item');
document.getElementById('mylist').appendChild(node);
noUiSlider.create(document.getElementById(id+'_sl'), {
start: [0, 1], connect: true, step: 0.0001, id:id,
range: {'min': 0, 'max': 1},
format: {to:function(value){return value;}, from:function(value){return Number(value);} }
});
document.getElementById(id+'_sl').noUiSlider.on("update", update_times );
document.getElementById(id+"_g").value = groupCounter;
document.getElementById(id+'_c').checked = true;
document.getElementById(id+'_c').onclick = function(){
document.getElementById('sort_dropdown').value = 'No_sort';
this.checked = !this.checked; if(this.checked){this.innerHTML='<i class="fas fa-eye"></i>';}else{this.innerHTML='<i class="fas fa-eye-slash"></i>';}
load_controls(); matrix_changed = true;timeline_changed=true;
}
document.getElementById(id+'_name').value = newdata.name;
select_data(id);
if(base_twis.length == 0){
base_twis.push({name: "All", group: 1, included: true});
add_item_to_twilist("All", 0);
document.getElementById("twi_0_c").onclick = function(){ document.getElementById('sort_dropdown').value = 'No_sort'; load_controls(); matrix_changed = true;timeline_changed=true; this.checked = !this.checked; if(this.checked){this.innerHTML='<i class="fas fa-eye"></i>';}else{this.innerHTML='<i class="fas fa-eye-slash"></i>';} };
}
for(let i = 0; i < tois_to_be_added.length; i++){
let range = [0,0];
if(TIME_STRAT == 'real'){
//the start time, end time of TWI is based on ground truth
range[0] = (tois_to_be_added[i].range[0] - newdata.t_start)/(newdata.t_end - newdata.t_start);
range[1] = (tois_to_be_added[i].range[1] - newdata.t_start)/(newdata.t_end - newdata.t_start);
}
else if(TIME_STRAT =='cumulative'){
convert_from_real_to_cumulative_time(newdata, range, tois_to_be_added[i]);
}
add_toi(cid-1, range[0], range[1], "", tois_to_be_added[i].name, tois_to_be_added[i].range[0], tois_to_be_added[i].range[1]);
}
tois_to_be_added.splice(0, tois_to_be_added.length);
if(selected_twi == -1)
select_twi(0);
try{ compute_toi_metrics(id, 0); give_topography(id, 0); load_controls(); }catch( error ){ console.error(error); }
background_changed = true; timeline_changed = true; matrix_changed = true;
make_note_dataset_selectors();
if(newdata.fixs.length < 2){cluster_warn+= ' ' +newdata.name+'\n'}
}
fileCounter += 1;
document.getElementById("dataset_load_txt").innerHTML = '';
document.getElementById("dataset_button").disabled = false;
if(fileCounter < filelist.length){ new_file(); }
else{
if(err_msg.length>0){alert('Not all data was formatted as required. Please note:\n' + err_msg);}
if(cluster_warn.length>0){alert('Note: There are less than 2 fixations in the following dataset(s). Check that clustering values are appropriate.\n\n' + cluster_warn+ '\n' )}
fileCounter = 0; filelist = document.getElementById('new_f').value = "";
err_msg = '';
cluster_warn = '';
}
}
reader.readAsText(filelist[fileCounter]);
}
function convert_from_real_to_cumulative_time(data, range, real_range, bLog){
//KT: convert the start time, end time based on fixtions and gaps of cumulative timeline
//iterate through the list of fixation start time, end time until twi start time hits the interval
let fixs = data.fixs;
if(fixs.length > 0 && fixs[0].real_t_start != undefined
&& fixs[0].real_t_end != undefined
&& fixs[0].cumul_t_start != undefined
&& fixs[0].cumul_t_end != undefined
&& real_range != undefined && real_range.length > 0 && real_range[0] != undefined && real_range[0] < real_range[1]) {
let i = 0;
//process START time
for(i = 0; i < fixs.length && fixs[i].real_t_start < real_range[0]; i++) {}
if(i < fixs.length && fixs[i].real_t_start == real_range[0])
range[0] = fixs[i].cumul_t_start;
else if(i > 0){
i--;
if(fixs[i].real_t_end > real_range[0]) {
if(fixs[i+1] != undefined) {
//KT: ignore fixs[i] as it is not a "full" fixation for this TWI because we consistently take into account only a *full* fixation within a TWI
range[0] = fixs[i+1].cumul_t_start;
}
else {
//KT: still take into account non-full fixations for this TWI
range[0] = fixs[i].cumul_t_start + (real_range[0] - fixs[i].real_t_start);
}
}
else if(fixs[i].real_t_end == real_range[0])
range[0] = fixs[i].cumul_t_end;
else {
//The START time hits the gaps between fixations, move it to the earliest end time of a fixation
range[0] = fixs[i].cumul_t_end;
}
}
range[0] = (range[0] - data.t_start)/(data.t_end - data.t_start);
//process END time
for(; i < fixs.length && fixs[i].real_t_start < real_range[1]; i++) {}
if(i < fixs.length && fixs[i].real_t_start == real_range[1])
range[1] = fixs[i].cumul_t_start;
else if(i > 0){
i--;
if(fixs[i].real_t_end > real_range[1]) {
//linear translation to cumulative start time
range[1] = fixs[i].cumul_t_start + (real_range[1] - fixs[i].real_t_start);
}
else if(fixs[i].real_t_end == real_range[1])
range[1] = fixs[i].cumul_t_end;
else {
//The END time hits the gaps between fixations, move it to the earliest end time of a fixation
range[1] = fixs[i].cumul_t_end;
}
}
range[1] = (range[1] - data.t_start)/(data.t_end - data.t_start);
}
else if(real_range != undefined && real_range.length > 0 && real_range[0] != undefined && real_range[0] < real_range[1]) {
range[0] = (real_range[0] - data.t_start)/(data.t_end - data.t_start);
range[1] = (real_range[1] - data.t_start)/(data.t_end - data.t_start);
}
}
function check_main_twi(){
let ele = document.getElementById("twi_0_c");
document.getElementById('sort_dropdown').value = 'No_sort'; load_controls(); matrix_changed = true;timeline_changed=true; ele.checked = !ele.checked; if(ele.checked){ele.innerHTML='<i class="fas fa-eye"></i>';}else{ele.innerHTML='<i class="fas fa-eye-slash"></i>';}
}
function new_dataset(v){ // creates the dataset objects, that are stored in k
dataset = {
initialised:false, checked:false, selected:false, name:'dat'+v, should_save: true, included: true,
t:[],x:[],y:[], fixs:[], sacs:[], slid_vals: [0,1], group:0,
toi_id:0, tois:[ {range:[0, 1], real_range:[0, 1], name:'0', update_topo:true, twi_id: 0} ], t_start:0, t_end:0
};
return dataset;
}
function index_location(array, value){ // binary search for array index where value is < index+1
var s = 0; var e = array.length;
while(s<e){
var m = Math.floor((e+s)/2);
if(array[m]<value){s=m+1}else{e=m}
}
return s;
}
function add_item(){
var v = cid; cid += 1;
q = databox.replace(/#/g, v);
var node = document.createElement("li");
node.innerHTML = q; node.id = v;
node.setAttribute('onclick', "select_data("+v+")");
node.setAttribute('class', 'data_item');
document.getElementById('mylist').appendChild(node);
DATASETS.push(new_dataset(v));
VIDEOS.push({});
noUiSlider.create(document.getElementById(v+'_sl'), {
start: [0, 1], connect: true, step: 0.0001, id:v,
range: {'min': 0, 'max': 1},
format: {to:function(value){return value;}, from:function(value){return Number(value);} }
});
document.getElementById(v+'_sl').noUiSlider.on("update", update_times );
document.getElementById(v+"_g").value = (v+1)%GROUPINGS.length;
select_data(v); document.getElementById(v+'_f').click(); make_dynamic_legend();
}
function update_times(){
list = document.getElementById('mylist').children;
let bUpdateVideo = false;
let set_video_cursor = 0;
for(var i=0; i<list.length; i++){
val = list[i].id;
range = document.getElementById(val+'_sl').noUiSlider.get();
if(DATASETS[val].fixs.length >= 2){
t0 = DATASETS[val].t_start; t1 = DATASETS[val].t_end;
tmin = range[0] * ( t1 - t0 ) + t0; tmax = range[1] * ( t1 - t0 ) + t0;
text_min = format_time(tmin/1000); text_max = format_time(tmax/1000);
if(text_min != document.getElementById(val+'_left').value)
{
document.getElementById(val+'_left').value = text_min;
if(selected_data != -1 && DATASETS[selected_data] != null && DATASETS[selected_data] != undefined){
bUpdateVideo = true;
set_video_cursor = tmin/1000;
}
}
if(text_max != document.getElementById(val+'_right').value)
{
document.getElementById(val+'_right').value = text_max;
//if bUpdateVideo is set to true, then skip the following update
if(!bUpdateVideo && selected_data != -1 && DATASETS[selected_data] != null && DATASETS[selected_data] != undefined){
bUpdateVideo = true;
set_video_cursor = tmax/1000;
}
}
}else{
document.getElementById(val+'_left').value = format_time(0);
document.getElementById(val+'_right').value = format_time(0);
}
}
//update video with the time
if(bUpdateVideo && selected_data != -1 && DATASETS[selected_data] != null && DATASETS[selected_data] != undefined &&
currentVideoObj != null && currentVideoObj != undefined) {
// type_select('video');
VIDEOS[selected_data].videoobj.time(set_video_cursor);
}
}
function update_timeslider(val){
range = document.getElementById(val+'_sl').noUiSlider.get();
ms_min = get_ms(document.getElementById(val+'_left').value);
ms_max = get_ms(document.getElementById(val+'_right').value);
t0 = DATASETS[val].t_start; t1 = DATASETS[val].t_end;
smin = (ms_min-t0) / ( t1 - t0 ) ;
smax = (ms_max-t0) / ( t1 - t0 ) ;
if(ms_min == -1){
update_times();
}else if(smin != range[0]){
document.getElementById(val+'_sl').noUiSlider.set([smin, null]);
}
if(ms_max == -1){
update_times();
}else if(smax != range[1]){
document.getElementById(val+'_sl').noUiSlider.set([null, smax]);
}
}
function delete_item(id){
note_selectors = document.getElementsByClassName("note_dataset");
note_list = [];
for(var i=0; i<note_selectors.length; i++){
if(note_selectors[i].value == id){
note_list.push(note_selectors[i].id)
}
}
if(note_list.length > 0){ var r = confirm("Are you sure? There are notes attached that will also be deleted.");
if(r){
for(var i=0; i<note_list.length; i++){
note_id = note_list[i].split('_')[0]*1;
var elem = document.getElementById('note_'+note_id);
elem.parentNode.removeChild(elem);
base_notes[note_id].included = false;
if(note_id == selected_note){ selected_note = -1; }
}
}
}else{ var r = confirm("Are you sure?");}
if (r == true) {
var element = document.getElementById(id);
element.parentNode.removeChild(element);
DATASETS[id].should_save = false;
background_changed = true; timeline_changed = true; matrix_changed = true; make_note_dataset_selectors();
}
make_dynamic_legend();
}
function select_data(id){
list = document.getElementById('mylist').children;
for(i =0;i < list.length; i++){
if( (list[i].id == id) != list[i].classList.value.includes('selected') ){
list[i].classList.toggle('selected');
}
}
selected_data = id;
if(id < DATASETS.length)
selected_grp = DATASETS[id].group;
update_dat_mode();
foreground_changed = true; timeline_changed = true; matrix_changed = true;
// background_changed = true;
background_changed |= SHOW_FIX||SHOW_TOPO; midground_changed = SHOW_SACCADE;
if(SHOW_TOPO)
update_topos = true;
// background_changed |= SHOW_FIX||SHOW_TOPO;
// if(SHOW_TOPO) image_changed = true;
}
function select_twi(id){
list = document.getElementById('twilist').children;
for(i =0;i < list.length; i++){
let listid = parseInt( list[i].id.substring(4) );
if( (listid == id) != list[i].classList.value.includes('selected') ){
list[i].classList.toggle('selected');
}
}
selected_twi = id;
if(id < base_twis.length)
selected_twigroup = base_twis[id].group;
update_twi_mode();
//iterate through all samples
for(let data_id = 0; data_id < DATASETS.length; data_id++){
if(DATASETS[data_id].included)
set_toi(data_id, id);
}
background_changed |= SHOW_FIX||SHOW_TOPO;
if(SHOW_TOPO) update_topo = true;
}
function set_toi(data_id, twi_id){
//allows to set a twi of a selected sample for the purpose of renaming twi and configuring its time interval
var data_items = document.getElementsByClassName('data_item');
let twis = DATASETS[data_id].tois.map(x=>x.twi_id);
let ltoi = document.getElementById(data_id+"_toi");
let data = DATASETS[data_id];
data.toi_id = twis.indexOf(twi_id);
let ele = document.getElementById(data_id+"_twi_"+twi_id);
for(let c = 0; c < ltoi.children.length; c++) {
//de-select tois
if(ele == null || ele == undefined) {
if(ltoi.children[c].classList.value.includes('toi_selected'))
ltoi.children[c].classList.toggle('toi_selected');
}
else if( (( (data_id+"_twi_"+twi_id) == ltoi.children[c].id) != ltoi.children[c].classList.value.includes('toi_selected'))){
ltoi.children[c].classList.toggle('toi_selected');
}
}
slider = document.getElementById(data_id+'_sl').noUiSlider;
//if(data.toi_id > 0){ data.tois[data.toi_id].range = slider.get(); }
if(data.toi_id != -1 && (data.tois[data.toi_id] == undefined || !data.tois[data.toi_id].included))
data.toi_id = -1;
if(data.toi_id != -1) {
if( twi_id == 0 ){ data.tois[0].range = [0, 1]; data.tois[0].update_topo = true; } // clicking 'all' resets toi to all, even from itself
slider.set(data.tois[data.toi_id].range);
background_changed |= SHOW_FIX||SHOW_TOPO; midground_changed = SHOW_SACCADE; timeline_changed = true; matrix_changed = true;
if( data.toi_id == 0 ){
document.getElementById(data_id+"_nametoi_box").style.display = 'none';
for(let i = 0; i < data_items.length; i++){
document.getElementsByClassName('data_item')[i].style.width='290px';
}
}
else{
document.getElementById(data_id+"_nametoi_box").style.display = 'block';
for(let i = 0; i < data_items.length; i++){
document.getElementsByClassName('data_item')[i].style.width='320px';
}
}
document.getElementById(data_id+"_nametoi").value = data.tois[data.toi_id].name;
}
else {
document.getElementById(data_id+"_nametoi_box").style.display = 'none';
document.getElementById(data_id+"_nametoi").value = "";
}
}
function update_toi_name(twi_id, toi_name){
for(let data_id = 0; data_id < DATASETS.length; data_id++){
data = DATASETS[data_id];
if(data == undefined || !data.included)
continue;
//iterate through twis of each sample
let toi_index=0;
for(toi_index=0; toi_index < data.tois.length; toi_index++) {
if(data.tois[toi_index] == undefined || !data.tois[toi_index].included)
continue;
if(data.tois[toi_index].twi_id == twi_id) {
data.tois[toi_index].name = toi_name;
document.getElementById(data_id+"_nametoi").value = toi_name;
document.getElementById(data_id+"_twi_"+twi_id).innerHTML = toi_name;
break;
}
}
}
}
function delete_twi(id){
if(id == 0){ return; }
let r = confirm("Are you sure you want to delete "+id+" the selected TWI for all the samples?");
if(r){
//iterate through all samples
for(let data_id = 0; data_id < DATASETS.length; data_id++){
if(DATASETS[data_id].included)
delete_toi(data_id, id);
}
//delete selected twi from twilist
let ele = document.getElementById('twi_'+id);
if(ele != null && ele != undefined ) {
ele.parentNode.removeChild( ele );
}
}
}
function delete_selected_toi(data_id){
let r = confirm("Are you sure you want to delete the selected TWI?");
if(r){
delete_toi(data_id, DATASETS[data_id].tois[DATASETS[data_id].toi_id].twi_id);
}
}
function delete_toi(data_id, twi_id){
if(twi_id == 0){ return; }
set_toi(data_id, 0);
let elem = document.getElementById(data_id+"_twi_"+twi_id);
if(elem != null && elem != undefined)
elem.parentNode.removeChild( elem );
}
function add_item_to_twilist(name, twi_id){
//add to DOM twi list
v = twi_id;
q = twibox.replace(/#/g, v);
node = document.createElement("li");
node.innerHTML = q; node.id = "twi_"+v;
//node.setAttribute('onclick', "if(selected_lens!="+v+"){select_lens("+v+");}else{select_lens(-1);}");
node.setAttribute('onclick', "select_twi("+twi_id+")");
node.setAttribute('class', 'data_item');
document.getElementById('twilist').appendChild(node);
update_twi_colors();
document.getElementById('twi_'+v+'_c').checked = true;
document.getElementById('twi_'+v+'_c').onclick = function(){ document.getElementById('sort_dropdown').value = 'No_sort'; load_controls(); matrix_changed = true;timeline_changed=true; this.checked = !this.checked; if(this.checked){this.innerHTML='<i class="fas fa-eye"></i>';}else{this.innerHTML='<i class="fas fa-eye-slash"></i>';} }
document.getElementById(v+'_twi_name').value = name;
document.getElementById(v+'_twigroup').value = base_twis[v].group;
}
function new_toi(data_id, t0, t1, type, name) {
let names = base_twis.map((x) => {
if(x.included)
return x.name;
});
let suggested_twi_name = "TWI1";
if(names.indexOf(suggested_twi_name)>-1)
suggested_twi_name = get_non_duplicate_name(names, suggested_twi_name);
let toi_name = prompt("Please enter a TWI name (accepting alphanumeric, underscore, or space", suggested_twi_name);
if(toi_name != null && toi_name != undefined) {
while(!(/^[a-zA-Z0-9-_()]+$/.test(toi_name))) {
toi_name = prompt("Please enter a valid TWI name (accepting alphanumeric, underscore, or space", suggested_twi_name);
if(toi_name == null)
break;
}
}
if(toi_name != null && toi_name != undefined) {
toi_name = toi_name.trim();
let toi_index = names.indexOf(toi_name);
let dat_toi_names = DATASETS[data_id].tois.map(
(x) => {
if(x.included)
return x.name;
}
);
if(toi_index > -1 && dat_toi_names.indexOf(toi_name) > -1)
toi_name = get_non_duplicate_name(names, toi_name);
if(TIME_STRAT == 'real')
add_toi(data_id, t0, t1, "", toi_name,
t0 * (DATASETS[data_id].t_end-DATASETS[data_id].t_start) + DATASETS[data_id].t_start,
t1 * (DATASETS[data_id].t_end-DATASETS[data_id].t_start) + DATASETS[data_id].t_start);
else
add_toi(data_id, t0, t1, "", toi_name, 0, 0);
}
}
function add_toi(data_id, t0, t1, type, name, t0_real, t1_real){
ltoi = document.getElementById(data_id+"_toi");
addtoi = document.getElementById(data_id+"_addtoi");
var node = document.createElement("li");
//search for base_twis if same twi type already exists
//if not, insert one into base_twis
let names = base_twis.map((x) => {
if(x.included)
return x.name;
});
let twi_id = names.indexOf(name);
if(twi_id == -1) {
let groupnum = base_twis.length+1;
if(groupnum > TWIS_COLOURS.length)
groupnum = TWIS_COLOURS.length;
base_twis.push({name: name, group: groupnum});
twi_id = base_twis.length-1;
order_twis.push(twi_id);
add_item_to_twilist(name, twi_id);
}
c = DATASETS[data_id].tois.length;
if(name == null || name == undefined || name == "")
name = c;
//unique identification of the corresponding DOM element
node.id = data_id + "_twi_"+ twi_id;
node.innerHTML = '<center>'+name+'</center>';
node.setAttribute('onclick', "set_toi("+data_id+","+twi_id+")");
DATASETS[data_id].tois.push( {range:[t0, t1], real_range:[t0_real, t1_real], name:name+'', twi_id: twi_id, included: true} );
ltoi.insertBefore(node, addtoi);
//c gives the array index of the tois
give_topography(data_id, c);
DATASETS[data_id].tois[c].update_topo = true;
// add_dat_to_twilist(twi_id, data_id, DATASETS[data_id].name);
matrix_changed = true;
if(type!='uploaded'){compute_all_metrics();}
}
function get_non_duplicate_name(names, inputstr) {
let new_toi_name = "";
let sequence = 0;
do {
new_toi_name = inputstr+'('+(++sequence)+')';
}while(names.indexOf(new_toi_name)>-1);
return new_toi_name;
}
var max_dist = 20; var min_time = 0;
function cluster_dataset(data){ // clusters raw data into a fixation list
// set a default size to data height/width if no image and not cropped
if(backimage_empty && limit_select == false) {
for(i =0;i < data.y.length; i++){
if(data.y[i]>HEIGHT){HEIGHT = data.y[i] + 1}
if(data.x[i]>WIDTH){WIDTH = data.x[i] + 1}
}
document.getElementById('HEIGHT').value = HEIGHT;
document.getElementById('WIDTH').value = WIDTH;
if(HEIGHT/ spatial_height > WIDTH / spatial_width){
pos_ratio = spatial_height/HEIGHT;
inv_ratio = HEIGHT/spatial_height;
}else{
pos_ratio = spatial_width/WIDTH;
inv_ratio = WIDTH/spatial_width;}
ground_x = 0;
ground_y = 0;
crop_stack = [ [OFFSET_X, OFFSET_Y, WIDTH, HEIGHT, limit_select] ]; // reset baseline frame of reference
}
let fixations = [];
if(max_dist == 0 && min_time == 0){
//Display the raw gaze data w/o fixation identification if both max_dist and min_time are both 0
if(TIME_STRAT == 'real'){
data.t_start = data.t[0]; data.t_end = data.t[data.t.length-1];
fixations = [];
var i=0;
while(i < data.t.length){
while( ((data.x[i] == 0 && data.y[i] == 0) || (Number.isNaN(data.x[i]) || Number.isNaN(data.y[i]))) ){ i += 1; }
start = i;
if(i+1 >= data.t.length)
break;
fix = {x: ((data.x[i] *SCALE_X)- offset_xdata), y: ((data.y[i] *SCALE_Y)- offset_ydata), t: data.t[i], dt: (data.t[i+1] - data.t[i]),
real_t_start: 0, real_t_end: 0, cumul_t_start: 0, cumul_t_end: 0 };
i += 1;
if(i+1 >= data.t.length) {
//insert the last fixation above before exiting otherwise we are losing one fixation
if( fix.x > 0 && fix.x < WIDTH && fix.y > 0 && fix.y < HEIGHT && fix.dt > min_time && !(fix.x == -offset_xdata && fix.y == -offset_ydata) ){ fixations.push(fix); }
break;
}
//max cluster distance is used as a parameter for clustering
//KT: modify the clustering algorithm to conform to I-DT; get max and min x, y of the gaze point in this time window, if difference is more than max cluster distance, then don't cluster
while( i+1 < data.t.length && ( ((data.x[i] *SCALE_X)- offset_xdata) - fix.x)**2 + ( ((data.y[i] *SCALE_Y)- offset_ydata) - fix.y)**2 < max_dist**2 && (data.x[i] == 0 && data.y[i] == 0)!= true && !Number.isNaN(data.x[i]) && !Number.isNaN(data.y[i])){
ddt = data.t[i+1] - data.t[i];
fix.x = (fix.dt*fix.x + ((data.x[i] *SCALE_X)- offset_xdata)*ddt ) / (fix.dt + ddt);
fix.y = (fix.dt*fix.y + ((data.y[i] *SCALE_Y)- offset_ydata)*ddt ) / (fix.dt + ddt);
fix.dt += ddt;
i += 1;
}
fix.dt = data.t[i] - data.t[start];
//min fixation time is used as a threshold to include or exclude fixations
if( fix.x > 0 && fix.x < WIDTH && fix.y > 0 && fix.y < HEIGHT && fix.dt > min_time && !(fix.x == -offset_xdata && fix.y == -offset_ydata) ){ fixations.push(fix); }
}
data.fixs = fixations;
}else if(TIME_STRAT == 'cumulative'){
var cumul = 0;
data.t_start = cumul;
fixations = [];
var i=0;
while(i < data.t.length){
while( ((data.x[i] == 0 && data.y[i] == 0) || (Number.isNaN(data.x[i]) || Number.isNaN(data.y[i]))) ){ i += 1; }
start = i;
if(i+1 >= data.t.length)
break;
fix = {x: ((data.x[i] *SCALE_X)- offset_xdata), y: ((data.y[i] *SCALE_Y)- offset_ydata), t: data.t[i], dt: (data.t[i+1] - data.t[i]),
real_t_start: data.t[i], real_t_end: 0, cumul_t_start: cumul, cumul_t_end: 0};
i += 1;
if(i+1 >= data.t.length) {
//insert the last fixation above before exiting otherwise we are losing one fixation
if( fix.x > 0 && fix.x < WIDTH && fix.y > 0 && fix.y < HEIGHT && fix.dt > min_time && !(fix.x == -offset_xdata && fix.y == -offset_ydata) ){
fix.t = cumul;
cumul += fix.dt; // append fixation time to cumulative time
fix.real_t_end = data.t[i];
fix.cumul_t_end = cumul;
fixations.push(fix);
}
break;
}
while( i+1 < data.t.length && ( ((data.x[i] *SCALE_X)- offset_xdata) - fix.x)**2 + ( ((data.y[i] *SCALE_Y)- offset_ydata) - fix.y)**2 < max_dist**2 && (data.x[i] == 0 && data.y[i] == 0)!= true && !Number.isNaN(data.x[i]) && !Number.isNaN(data.y[i])){
ddt = data.t[i+1] - data.t[i];
fix.x = (fix.dt*fix.x + ((data.x[i] *SCALE_X)- offset_xdata)*ddt ) / (fix.dt + ddt);
fix.y = (fix.dt*fix.y + ((data.y[i] *SCALE_Y)- offset_ydata)*ddt ) / (fix.dt + ddt);
fix.dt += ddt;
i += 1;
}
fix.dt = data.t[i] - data.t[start];
fix.real_t_end = data.t[i];
fix.t = cumul;
if( fix.x > 0 && fix.x < WIDTH && fix.y > 0 && fix.y < HEIGHT && fix.dt > min_time && !(fix.x == -offset_xdata && fix.y == -offset_ydata) ){
cumul += fix.dt; // append fixation time to cumulative time
fix.cumul_t_end = cumul;
fixations.push(fix);
}
}
data.t_end = cumul;
data.fixs = fixations;
}
}
else {
//fixation detection implementation based on dispersion-based algorithm (I-DT)
if(TIME_STRAT == 'real'){
data.t_start = data.t[0]; data.t_end = data.t[data.t.length-1];
let window_points = new Queue();
let start = -1;
fixations = [];
let i = 0;
let max_x = -1, min_x = Number.MAX_VALUE, max_y = -1, min_y = Number.MAX_VALUE;
let fix = null;
while(i < data.t.length){
let data_x = (data.x[i] *SCALE_X)- offset_xdata;
let data_y = (data.y[i] *SCALE_Y)- offset_ydata;
while( ((data_x == 0 && data_y == 0) || (data_x <= 0 || data_x >= WIDTH) || (data_y <= 0 || data_y >= HEIGHT) || (Number.isNaN(data_x) || Number.isNaN(data_y))) && i < data.t.length){
// while(!window_points.isEmpty()) {window_points.dequeue();}
i += 1;
data_x = (data.x[i] *SCALE_X)- offset_xdata;
data_y = (data.y[i] *SCALE_Y)- offset_ydata;
}
if(i >= data.t.length)
break;
if(window_points.isEmpty())
start = i;
//Step 1: Initialise window over first points to cover the duration threshold
//first check if window_points already covers the duration threshold
if(!window_points.isEmpty() && i-1 > start && (data.t[i-1] - data.t[start] >= min_time) ){
;
}
else {
while( i < data.t.length && (data.t[i] - data.t[start] < min_time) ){
let data_x = (data.x[i] *SCALE_X)- offset_xdata;
let data_y = (data.y[i] *SCALE_Y)- offset_ydata;
//insert valid gaze point into window_points
if((data_x == 0 && data_y == 0)!= true &&
((data_x <= 0 || data_x >= WIDTH) || (data_y <= 0 || data_y >= HEIGHT))!=true
&& !Number.isNaN(data_x) && !Number.isNaN(data_y)) {
if(max_x < data_x) max_x = data_x;
if(min_x > data_x) min_x = data_x;
if(max_y < data_y) max_y = data_y;
if(min_y > data_y) min_y = data_y;
window_points.enqueue(new Node({"pointIndex": i}));
}
i += 1;
}
}
//Step 2: check if dispersion of window points <= dispersion threshold
if((!window_points.isEmpty() && max_x - min_x + max_y - min_y) < max_dist) {
let j = window_points.front().data.pointIndex;
let tail = i - 1;
if(j + 1 < data.t.length) {
fix = {x: ((data.x[j] *SCALE_X)- offset_xdata), y: ((data.y[j] *SCALE_Y)- offset_ydata), t: data.t[j], dt: (data.t[j+1] - data.t[j]),
real_t_start: 0, real_t_end: 0, cumul_t_start: 0, cumul_t_end: 0 };
j += 1;
//Step 3: Determine fixation based on window_points
while(j <= tail){
let data_x = (data.x[j] *SCALE_X)- offset_xdata;
let data_y = (data.y[j] *SCALE_Y)- offset_ydata;
//check if this is a valid gaze point
if((data_x == 0 && data_y == 0)!= true &&
((data_x <= 0 || data_x >= WIDTH) || (data_y <= 0 || data_y >= HEIGHT))!=true
&& !Number.isNaN(data_x) && !Number.isNaN(data_y)) {
if(fix == null && j + 1 < data.t.length) {
fix = {x: (data_x), y: (data_y), t: data.t[j], dt: (data.t[j+1] - data.t[j]),
real_t_start: 0, real_t_end: 0, cumul_t_start: 0, cumul_t_end: 0 };
}
else if(j + 1 < data.t.length){
ddt = data.t[j+1] - data.t[j];
fix.x = (fix.dt*fix.x + (data_x)*ddt ) / (fix.dt + ddt);
fix.y = (fix.dt*fix.y + (data_y)*ddt ) / (fix.dt + ddt);
fix.dt += ddt;
}
}
j+=1;
}
//Step 4: Add additional points to the window until dispersion > threshold
while( i < data.t.length ){
let data_x = (data.x[i] *SCALE_X)- offset_xdata;
let data_y = (data.y[i] *SCALE_Y)- offset_ydata;
//insert valid gaze point into window_points
if((data_x == 0 && data_y == 0)!= true &&
((data_x <= 0 || data_x >= WIDTH) || (data_y <= 0 || data_y >= HEIGHT))!=true
&& !Number.isNaN(data_x) && !Number.isNaN(data_y)) {
if(max_x < data_x) max_x = data_x;
if(min_x > data_x) min_x = data_x;
if(max_y < data_y) max_y = data_y;
if(min_y > data_y) min_y = data_y;
//check if dispersion of window points <= dispersion threshold
if((max_x - min_x + max_y - min_y) < max_dist) {
//Note a fixation
if(i + 1 < data.t.length){
ddt = data.t[i+1] - data.t[i];
fix.x = (fix.dt*fix.x + (data_x)*ddt ) / (fix.dt + ddt);
fix.y = (fix.dt*fix.y + (data_y)*ddt ) / (fix.dt + ddt);
fix.dt += ddt;
window_points.enqueue(new Node({"pointIndex": i}));
}
}
else
break;
}
i += 1;
}
//Step 5: insert fixation into fixs
fixations.push(fix);
//Step 6: Reraovewindow points from points
while(!window_points.isEmpty())
window_points.dequeue();
fix = null;
start = -1;
max_x = -1; min_x = Number.MAX_VALUE; max_y = -1; min_y = Number.MAX_VALUE;
}
}
else {
//Remove first point from window
window_points.dequeue();
if(!window_points.isEmpty())
start = window_points.front().data.pointIndex;
fix = null;
//update min, max value for dispersion calculation
let j = start;
let tail = i - 1;
max_x = -1; min_x = Number.MAX_VALUE; max_y = -1; min_y = Number.MAX_VALUE;
let data_x = (data.x[j] *SCALE_X)- offset_xdata;
let data_y = (data.y[j] *SCALE_Y)- offset_ydata;
while(j <= tail){
if(max_x < data_x) max_x = data_x;
if(min_x > data_x) min_x = data_x;
if(max_y < data_y) max_y = data_y;
if(min_y > data_y) min_y = data_y;
j+=1;