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code.js
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code.js
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let chart, worker;
let Z0, Q, B, n, s0, porosity, a, b, reachLength, simulationTime, delX, delT, delayMs, qsInjected;
let calculatedProfiles;
function updateGraph() {
if (worker != undefined) {
worker.terminate();
}
worker = new Worker('worker.js');
Z0 = document.getElementById("z0").valueAsNumber;
Q = document.getElementById("discharge").valueAsNumber;
B = document.getElementById("width").valueAsNumber;
n = document.getElementById("manningsn").valueAsNumber;
s0 = document.getElementById("bedslope").valueAsNumber;
porosity = document.getElementById("porosity").valueAsNumber;
a = document.getElementById("a").valueAsNumber;
b = document.getElementById("b").valueAsNumber;
reachLength = document.getElementById("reach").valueAsNumber;
simulationTime = document.getElementById("maxT").valueAsNumber;
delX = document.getElementById("delX").valueAsNumber;
delT = document.getElementById("delT").valueAsNumber;
delayMs = document.getElementById("delayMs").valueAsNumber;
let q0 = Q / B; let h0 = Math.pow(q0 * q0 * n * n / s0, 0.3);
qsInjected = document.getElementById("qsInjected").valueAsNumber * a * Math.pow(q0 / h0, b);
worker.onmessage = (event) => {
let data = event.data;
if (data.msgType == 'progress') {
document.title = data.msgData;
} else {
profileCounter = 0;
calculatedProfiles = data.msgData;
let maxZ = findMaxZ(calculatedProfiles);
setTimeout(function repeat() {
profile = calculatedProfiles[profileCounter++];
if (profile != null) {
drawChart(profile, calculatedProfiles[0], maxZ);
setTimeout(repeat, delayMs);
}
}, delayMs);
}
};
worker.postMessage({
Z0, Q, B, n, s0, porosity, a, b, reachLength, simulationTime, delX, delT, delayMs, qsInjected
});
}
function findMaxZ(calculatedProfiles) {
let maxZ = 0;
for (let i = 0; i < calculatedProfiles.length; i++) {
let profile = calculatedProfiles[i];
for (let j = 0; j < profile.x.length; j++) {
if (profile.z[j] > maxZ) {
maxZ = profile.z[j];
}
}
}
return maxZ;
}
function drawChart(profile, initialProfile,maxZ) {
let ctx = document.getElementById('chart').getContext('2d');
if (chart != undefined) {
chart.destroy();
}
chart = new Chart(ctx, {
type: 'line',
data: {
labels: profile.x,
datasets: [{
label: 'Bed level z (m)',
data: profile.z,
borderColor: ['rgba(25, 99, 132, 1)'],
borderWidth: 1,
fill: false,
pointRadius: 1
},
{
label: 'Initial bed level z (m)',
data: initialProfile.z,
borderColor: ['rgba(255, 99, 132, 1)'],
borderWidth: 1,
fill: false,
pointRadius: 1
}/* ,
{
label: 'Flow depth h (m)',
data: profile.h,
borderColor: ['rgba(255, 99, 132, 1)'],
borderWidth: 1,
fill: false,
pointRadius: 1
},
{
label: 'Specific discharge q',
data: profile.q,
borderColor: ['rgba(255, 99, 132, 1)'],
borderWidth: 1,
fill: false,
pointRadius: 1
} */]
},
options: {
animation: {
duration: 1
},
scales: {
yAxes: [{
ticks: {
beginAtZero: false,
autoSkip: true,
min: Z0 - reachLength * s0,
max: maxZ
},
scaleLabel: {
display: true,
labelString: 'Meters (m)'
}
}],
xAxes: [{
ticks: {
autoSkip: true,
min: 0,
max: reachLength
},
scaleLabel: {
display: true,
labelString: 'x (m)'
}
}]
},
title: {
display: true,
text: profile.t + " s"
},
maintainAspectRatio: false,
responsive: false
}
});
}