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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Surfice WebGL</title>
<link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
html,
body {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
background: #000000;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
}
li {
float: left;
}
li a,
.dropbtn {
/* menu header */
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover,
.dropdown:hover .dropbtn {
background-color: #44ABDA;
}
li.dropdown {
display: inline-block;
font-family: Arial, Helvetica, sans-serif;
}
.dropdown-content {
font-family: Arial, Helvetica, sans-serif;
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
}
.dropdown-content a {
/* menu items */
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-content a:hover {
background-color: #f1f1f1
}
.dropdown:hover .dropdown-content {
display: block;
}
.divider,
.overlay {
border-top: 1px solid grey;
}
</style>
</head>
<body>
<div id="menu-container">
<input id="file-input" type="file" name="name" style="display: none;" />
<ul>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn" id="FileMenu">File</a>
<div class="dropdown-content">
<a class="viewBtn" id="Open">Open</a>
<a class="viewBtn" id="OpenOverlay">Open Overlay</a>
<a class="viewBtn" id="SaveBitmap">Save Bitmap</a>
<a class="divider" id="About">About</a>
</div>
</li>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn" id="ViewMenu">View</a>
<div class="dropdown-content">
<a class="viewBtn" id="L">Left</a>
<a class="viewBtn" id="R">Right</a>
<a class="viewBtn" id="P">Posterior</a>
<a class="viewBtn" id="A">Anterior</a>
<a class="viewBtn" id="I">Inferior</a>
<a class="viewBtn" id="S">Superior</a>
</div>
</li>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn">Examples</a>
<div class="dropdown-content">
<a class="viewBtn" id="_colorbrain.mz3">fMRI</a>
<a class="viewBtn" id="_aal.mz3">Template</a>
<a class="viewBtn" id="_Right.mz3">Right</a>
<a class="viewBtn" id="_Right_Smooth.mz3">Right Smooth</a>
<a class="viewBtn" id="_Left.mz3">Left</a>
<a class="viewBtn" id="_Left_Smooth.mz3">Left Smooth</a>
<a class="viewBtn" id="_Cortex.mz3">Cortex</a>
<a class="divider" id="^overlay.mz3">Add Overlay</a>
</div>
</li>
</ul>
</div>
<div id="three-container">
<script src="config.js" ></script>
<script src="three.min.js"></script>
<script src="gunzip.min.js"></script>
<script src="dat.gui.min.js"></script>
<script src="OrbitControls.js"></script>
<script src="MZ3Loader.js"></script>
<script>
//console.log(config)
var container = window.document.getElementById('three-container');
//file open dialogs
var openDialog = document.createElement('input');
openDialog.type = 'file';
openDialog.onchange = e => {
loadGeometry(e.target.files[0], false);
}
var openOverlayDialog = document.createElement('input');
openOverlayDialog.type = 'file';
openOverlayDialog.onchange = e => {
loadGeometry(e.target.files[0], false, true);
}
//use pre-baked AO texture: 1x256 B/W gradient
// https://rawgit.com/looeee/three.js/per_vertex_ao/examples/webgl_per_vertex_ao.html
var aoMap = new THREE.TextureLoader().load('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAQAAAAABCAYAAAAxWXB3AAAAIElEQVQ4T2NkYGD4z8TExAACo/RoOIymg5GTDxgZGRkA/oMD/vOwS0YAAAAASUVORK5CYII=');
var busy = false;
var folder;
var axesHelper;
var menuHeight = 6 + document.getElementById('menu-container').clientHeight;
var isPerspective = true;
var maxDistance = 100.0;
var minDistance = 1.5;
var defaultDistance = 5.0;
var ambientLight = new THREE.AmbientLight(0xffffff, parameters.ambientIntensity);
var light = new THREE.PointLight(0xffffff, 1.0 - parameters.ambientIntensity, 100);
var camera, scene, renderer;
var ofolder, aofolder;
var scaleZoom = 1;
var mesh = null;
var overlay = null;
init();
function initCamera() {
if (isPerspective)
camera = new THREE.PerspectiveCamera(10, window.innerWidth / window.innerHeight, 0.01, maxDistance);
else {
var w = window.innerWidth;
var h = window.innerHeight;
camera = new THREE.OrthographicCamera(w / -2, w / 2, h / 2, h / -2, 1, 1000);
}
camera.position.z = defaultDistance;
camera.zoom = 1.0;
camera.add(light);
scene.add(ambientLight);
scene.add(camera);
}
function init() {
//document.body.appendChild( container );
setupDragDrop();
scene = new THREE.Scene();
scene.background = new THREE.Color(0xaaaaaa);
scene.background.setHex(parameters.backColor.replace("#", "0x"));
//var ambient = new THREE.AmbientLight( 0x101030 );
//scene.add( ambient );
light.position.set(0, defaultDistance * 0.5, 0); //from above: normal lighting
light.decay = 0;
initCamera();
renderer = new THREE.WebGLRenderer({
antialias: true
});
//renderer.setPixelRatio( 1 );//<- low DPI
renderer.setPixelRatio(window.devicePixelRatio); // <- high DPI
container.appendChild(renderer.domElement);
renderer.localClippingEnabled = true;
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.minDistance = minDistance; //Closest we can get to the Sun a
controls.maxDistance = maxDistance; //Let you figure this one out...
//Menu events
controls.addEventListener('change', render);
var buttons = document.getElementsByClassName("viewBtn");
for (let i = 0; i < buttons.length; i++)
buttons[i].addEventListener("click", onButtonClick, false);
buttons = document.getElementsByClassName("divider");
for (let i = 0; i < buttons.length; i++)
buttons[i].addEventListener("click", onButtonClick, false);
// GUI
var gui = new dat.GUI();
var folderG = gui.addFolder('Scene');
folderG.add(parameters, 'axesHelper').name('Axes Helper').onFinishChange(function() {
materialChange();
});
folderG.addColor(parameters, 'backColor').name('Back Color').onChange(function() {
materialChange();
});
folderG.open();
aofolder = gui.addFolder('Occlusion');
aofolder.add(parameters, 'ambientIntensity').min(0).max(1).step(0.01).name('Amount').onChange(function() {
materialChange();
});
folder = gui.addFolder('Background Mesh');
folder.addColor(parameters, 'meshColor').name('Color').onChange(function() {
materialChange();
});
folder.add(parameters, 'opacity').min(0).max(1).step(0.01).name('Opacity').onChange(function() {
materialChange();
});
folder.add(parameters, 'roughness').min(0).max(1).step(0.01).name('Roughness').onChange(function() {
materialChange();
});
folder.add(parameters, 'metalness').min(0).max(1).step(0.01).name('Metalness').onChange(function() {
materialChange();
});
folder.add(parameters, 'wireframe').name('Wire Frame').onFinishChange(function() {
materialChange();
});
folder.open();
ofolder = gui.addFolder('Overlay Mesh');
ofolder.addColor(parameters, 'oColor').name('Color').onChange(function() {
materialChange();
});
//ofolder.add( parameters, 'oopacity' ).min(0).max(1).step(0.01).name('Opacity').onChange(function(){ materialChange();});
ofolder.add(parameters, 'oroughness').min(0).max(1).step(0.01).name('Roughness').onChange(function() {
materialChange();
});
ofolder.add(parameters, 'ometalness').min(0).max(1).step(0.01).name('Metalness').onChange(function() {
materialChange();
});
ofolder.add(parameters, 'owireframe').name('Wire Frame').onFinishChange(function() {
materialChange();
});
ofolder.close();
gui.open();
//load startup mesh
loadGeometry(parameters.mesh, true, false, parameters.overlay);
window.addEventListener('resize', onWindowResize, false);
onWindowResize();
}
function loadGeometry(url, isURL = true, isOverlay = false, urlOverlay = '') {
var fnm = url;
if (!isURL) {
fnm = url.name;
}
if (busy) { //promises should reduce this issue
console.log('Too busy to load ' + fnm);
return false;
}
busy = true;
console.log('Loading "'+fnm+'"');
//next lines to detect format
var extension = fnm.split('.').pop().toLowerCase();
var isMz3 = (extension === 'mz3');
if (!isMz3) {
alert("Images should be in mz3 format");
console.log('Only MZ3 format supported');
}
var loader = new THREE.MZ3Loader();
if (isURL) {
loader.load(url, function(geometry) {
//console.log('Loaded '+fnm);
loadGeometryCore(geometry, isOverlay);
//console.log('Geo Loaded '+fnm);
busy = false;
if (urlOverlay !== "")
loadGeometry(urlOverlay, true, true);
}, onProgress, onError);
} else {
var reader = new FileReader();
reader.readAsArrayBuffer(url);
reader.addEventListener('load', function(event) {
var object = loader.parse(event.target.result);
loadGeometryCore(object, isOverlay);
busy = false;
});
}
return true;
var onProgress = function(xhr) {
if (xhr.lengthComputable) {
//var percentComplete = xhr.loaded / xhr.total * 100;
//console.log( Math.round( percentComplete, 2 ) + '% downloaded' );
if (xhr.loaded === xhr.total) {
console.log('File size: ' + (xhr.total / 1024).toFixed(2) + 'kB');
}
}
}; //onProgress
var onError = function() {
//busy = false;
}; //onError
function loadGeometryCore(geometry, isOverlay = false) {
if (overlay !== null) {
scene.remove(overlay);
overlay.geometry.dispose();
overlay = null;
ofolder.close();
}
if (isOverlay) {
loadGeometryOverlay(geometry);
return;
}
if (mesh !== null) {
scene.remove(mesh);
mesh.geometry.dispose();
}
var mat = new THREE.MeshStandardMaterial({
aoMapIntensity: parameters.aoMapIntensity
}); //side: THREE.DoubleSide
if (typeof geometry.attributes.uv2 !== 'undefined') {
mat.aoMap = aoMap;
aofolder.open();
} else {
aofolder.close();
}
if (typeof geometry.attributes.color !== 'undefined') {
mat.vertexColors = THREE.VertexColors;
}
mat.transparent = true;
mesh = new THREE.Mesh(geometry, mat);
mesh.geometry.colorsNeedUpdate = true;
var sz = new THREE.Vector3();
var box = new THREE.Box3().setFromObject(mesh);
sz = box.getSize(sz);
var maxSz = sz.length();
scaleZoom = 1.0 / maxSz;
mesh.scale.set(scaleZoom, scaleZoom, scaleZoom);
mesh.renderOrder = 1;
scene.add(mesh);
/* //https://github.com/mrdoob/three.js/issues/2476
var mat2 = new THREE.MeshStandardMaterial({
aoMapIntensity: parameters.aoMapIntensity,
}); //side: THREE.DoubleSide
mat2.transparent = true;
mat2.side = THREE.BackSide;
mesh = new THREE.Mesh(geometry, mat2);
mesh.scale.set(scaleZoom, scaleZoom, scaleZoom);
mesh.renderOrder = 1;
scene.add(mesh);*/
//busy = false;
materialChange();
cameraReset();
} //loadGeometryCore
function loadGeometryOverlay(geometry) {
var mat = new THREE.MeshStandardMaterial({
side: THREE.DoubleSide
});
if (typeof geometry.attributes.color !== 'undefined') {
mat.vertexColors = THREE.VertexColors;
parameters.oColor = "#FFFFFF";
}
mat.transparent = true;
overlay = new THREE.Mesh(geometry, mat);
overlay.geometry.colorsNeedUpdate = true;
overlay.scale.set(scaleZoom, scaleZoom, scaleZoom);
//console.log( '# of overlay vertices: ' + geometry.attributes.position.count );
//console.log( '# of overlay triangles: ' + ( geometry.index ? geometry.index.count / 3 : geometry.attributes.position.count / 3 ) );
materialChange();
scene.add(overlay);
//busy = false;
cameraReset();
} //loadGeometryOverlay
} //loadGeometry()
function onWindowResize() {
var w = window.innerWidth;
var h = window.innerHeight - menuHeight;
//console.log(" w : " + w + " h : " + h + " menu : "+ menuHeight);
if (isPerspective)
camera.aspect = w / h;
else {
camera.left = w / -2;
camera.right = w / 2;
camera.top = h / 2;
camera.bottom = h / -2;
}
camera.updateProjectionMatrix();
renderer.setSize(w, h);
cameraReset();
}
function materialChange() {
scene.background.setHex(parameters.backColor.replace("#", "0x"));
//ambientLight.color.setHex( parameters.backColor.replace("#", "0x") );
if (mesh.material.aoMap !== null) {
mesh.material.aoMapIntensity = parameters.aoMapIntensity;
ambientLight.intensity = parameters.ambientIntensity;
light.intensity = 1.0 - parameters.ambientIntensity;
} else {
ambientLight.intensity = 0.0;
light.intensity = 1.0;
}
var color = new THREE.Color();
color.setHex(parameters.meshColor.replace("#", "0x"));
if (mesh.material.vertexColors === THREE.VertexColors) {
color.r = (color.r + 1.0) / 2.0;
color.g = (color.g + 1.0) / 2.0;
color.b = (color.b + 1.0) / 2.0;
}
mesh.material.color = color;
mesh.material.metalness = parameters.metalness;
mesh.material.opacity = parameters.opacity;
mesh.material.roughness = parameters.roughness;
mesh.material.wireframe = parameters.wireframe;
if (overlay !== null) {
var oColor = new THREE.Color();
oColor.setHex(parameters.oColor.replace("#", "0x"));
if (overlay.material.vertexColors === THREE.VertexColors) {
oColor.r = (oColor.r + 1.0) / 2.0;
oColor.g = (oColor.g + 1.0) / 2.0;
oColor.b = (oColor.b + 1.0) / 2.0;
}
overlay.material.color = oColor;
overlay.material.metalness = parameters.ometalness;
//overlay.material.opacity = parameters.oopacity;
overlay.material.roughness = parameters.oroughness;
overlay.material.wireframe = parameters.owireframe;
ofolder.open();
}
if (axesHelper !== null)
scene.remove(axesHelper);
if (parameters.axesHelper > 0) {
axesHelper = new THREE.AxesHelper(0.5 * parameters.axesHelper + 0.001);
scene.add(axesHelper);
}
render();
}
function render() {
if (!isPerspective) {
var dist = camera.position.distanceTo(scene.position);
var mn = Math.min(window.innerHeight, window.innerWidth) * 1.0;
camera.zoom = (dist / defaultDistance) * mn;
camera.updateProjectionMatrix();
}
camera.lookAt(scene.position);
renderer.render(scene, camera);
}
function cameraReset() {
var dist = camera.position.distanceTo(scene.position);
controls.reset();
var Theta = (parameters.azimuth-90) * Math.PI / 180;
var Phi = parameters.elevation;
Phi = Math.min(Phi, 90);
Phi = Math.max(Phi, -90);
var Phi = Phi * Math.PI / 180;//degrees->radians
var x = Math.cos(Phi)*Math.cos(Theta);
var y = Math.cos(Phi)*Math.sin(Theta);
var z = Math.sin(Phi);
//console.log('%g %g %g', x, y, z);
camera.position.set(dist*x, dist*z, dist*y);
camera.updateMatrix();
controls.update();
}
function onButtonClick(event) {
var el = this.parentNode;
el.style.display = "none";
setTimeout(function() { //close menu
el.style.removeProperty("display");
}, 500);
//console.log(event.target.id);
if(event.target.id.charAt(0) === '_') { //load mesh
s = event.target.id.substr(1);
loadGeometry(s);
return;
}
if(event.target.id.charAt(0) === '^') { //load overlay
s = event.target.id.substr(1);
loadGeometry(s, true, true);
return;
}
if (event.target.id === "Open") {
openDialog.click();
return;
}
if (event.target.id === "OpenOverlay") {
openOverlayDialog.click();
//alert("Surfice by Chris Rorden");
return;
}
if (event.target.id === "About") {
alert("Surfice by Chris Rorden");
/*code below saves mz3 mesh
//console.log(mesh.geometry.attributes.position.array.length);
//window.open( 'https://www.mccauslandcenter.sc.edu/crnl/', '_blank' )
nvert = mesh.geometry.attributes.position.array.length / 3;
hdrBytes = 16;
var buffer = new ArrayBuffer(16+ (nvert * 4));
var view = new DataView(buffer);
view.setUint16(0, 23117, true); //magic - true: mz3 ALWAYS little endian!
var attr = 8; //scalar!
view.setUint16(2, attr, true);
var nface = 0;
view.setUint32(4, nface, true);
view.setUint32(8, nvert, true);
var nskip = 0;
view.setUint32(12, nskip, true);
var _buffer = buffer;
var positions = new Float32Array(_buffer, 16,nvert, true);
for ( var i = 0; i < nvert; i ++ )
positions[i] = i;
saveByteArray([buffer], 'example.mz3');*/
return;
}
if (event.target.id === "SaveBitmap") {
var imgData;
try {
var strMime = "image/png";
var strDownloadMime = "image/octet-stream";
renderer.render(scene, camera);
imgData = renderer.domElement.toDataURL(strMime);
saveFile(imgData.replace(strMime, strDownloadMime), "surfice.png");
} catch (e) {
console.log(e);
}
return;
}
var dist = camera.position.distanceTo(scene.position);
controls.reset();
if (event.target.id === "L")
camera.position.set(-dist, 0, 0);
else if (event.target.id === "R")
camera.position.set(dist, 0, 0);
else if (event.target.id === "S")
camera.position.set(0, dist, 0.001);
else if (event.target.id === "I") {
camera.position.set(0, -dist, 0.00);
//requires modification to OrbitControls.js https://stackoverflow.com/questions/50633960/three-js-orbitcontrols-how-update-rotation-camera
controls.rotate(180 * Math.PI / 180);
} else if (event.target.id === "A")
camera.position.set(0, 0, -dist);
else //P
camera.position.set(0, 0, dist);
controls.update();
}
var saveFile = function(strData, filename) {
var link = document.createElement('a');
if (typeof link.download === 'string') {
document.body.appendChild(link); //Firefox requires the link to be in the body
link.download = filename;
link.href = strData;
link.click();
document.body.removeChild(link); //remove the link when done
} else {
location.replace(uri);
}
}
function setupDragDrop() {
var holder = document.getElementById('three-container');
// check if filereader is available
if (typeof window.FileReader === 'undefined') {
console.error("Filereader not supported");
}
holder.ondragover = function() {
this.className = 'hover';
return false;
};
holder.ondragend = function() {
this.className = '';
return false;
};
holder.ondrop = function(e) {
this.className = '';
e.preventDefault();
loadGeometry(e.dataTransfer.files[0], false);
return false;
}
} //setupDragDrop()
</script>
</div>
</body>
</html>