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<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<style>
#controls {
width: 30%;
border: 10px;
border-radius: 1%;
color: azure;
float: left;
}
#vtk_render_area {
position: absolute;
left: 0;
top: 0;
width: 100vw;
height: 100vh;
z-index: -1;
}
#canvas {
position: absolute;
background-color: black;
padding-right: 0;
margin-left: auto;
margin-right: auto;
display: block;
}
#logs {
width: 30%;
border: 10px;
border-radius: 1%;
resize: none;
color: rgb(0, 255, 102);
background-color: rgba(32, 0, 39, 0.0);
float: right;
}
</style>
</head>
<body>
<div id="vtk_render_area">
<div>
<canvas id="canvas" oncontextmenu="event.preventDefault()" tabindex=-1></canvas>
</div>
</div>
<div id="controls">
<label> Normal of clip plane </label>
<div>
<div>
<input type="range" min="-1" max="1" value="0" class="slider" step="0.1" id="nx"
oninput="this.nextElementSibling.value = this.value">
<output>0</output>
</div>
<div>
<input type="range" min="-1" max="1" value="0" class="slider" step="0.1" id="ny"
oninput="this.nextElementSibling.value = this.value">
<output>0</output>
</div>
<div>
<input type="range" min="-1" max="1" value="1" class="slider" step="0.1" id="nz"
oninput="this.nextElementSibling.value = this.value">
<output>1</output>
</div>
</div>
</div>
<textarea title="Console output" id="logs" cols="32" rows="20"></textarea>
<script type='text/javascript'>
var vtkWasmRuntime = null;
var demoApp = null;
var mouseDown = false;
var Module = {
'print': (function () {
var logs = document.getElementById('logs');
if (logs) logs.value = ''; // clear browser cache
return function (text) {
text = Array.prototype.slice.call(arguments).join(' ');
console.info(text);
if (logs) {
logs.value += text + "\n";
logs.scrollTop = logs.scrollHeight; // focus on bottom
}
};
})(),
'printErr': function (text) {
var logs = document.getElementById('logs');
if (logs) logs.value = ''; // clear browser cache
text = Array.prototype.slice.call(arguments).join(' ');
console.error(text);
if (logs) {
logs.value += text + "\n";
logs.scrollTop = logs.scrollHeight; // focus on bottom
}
},
'preRun': [(runtime) => {
// Enable SMP after https://gitlab.kitware.com/vtk/vtk/-/issues/19424 is resolved
runtime.ENV.VTK_SMP_BACKEND_IN_USE = "Sequential";
// cache the VTK wasm runtime instance.
vtkWasmRuntime = runtime;
}],
'onRuntimeInitialized': function () {
console.log('WASM runtime initialized');
demoApp = new vtkWasmRuntime.WrappedAsyncClipper("#canvas");
demoApp.AddClipPlaneModifiedUIObserver((_nx, _ny, _nz) => {
nx.value = _nx;
nx.nextElementSibling.value = _nx;
ny.value = _ny;
ny.nextElementSibling.value = _ny;
nz.value = _nz;
nz.nextElementSibling.value = _nz;
});
demoApp.Start();
// focus on the canvas to grab keyboard inputs.
canvas.setAttribute('tabindex', '0');
// grab focus when the render window region receives mouse clicks.
canvas.addEventListener('click', () => canvas.focus());
canvas.addEventListener('mousedown', (e) => {
mouseDown = true;
demoApp.Abort();
e.preventDefault();
});
canvas.addEventListener('mousemove', () => {
if (mouseDown) {
demoApp.Abort();
}
});
canvas.addEventListener('mouseup', (e) => {
mouseDown = false;
demoApp.ResetAbortFlag();
});
}
};
var nx = document.getElementById('nx');
var ny = document.getElementById('ny');
var nz = document.getElementById('nz');
function onClipPlaneNormalChange() {
if (vtkWasmRuntime === null) {
console.warn("WASM runtime not yet ready!");
return;
}
demoApp.Abort();
demoApp.UpdateClipPlaneNormal(Number(nx.value), Number(ny.value), Number(nz.value));
demoApp.AsyncRender();
}
nx.oninput = onClipPlaneNormalChange;
ny.oninput = onClipPlaneNormalChange;
nz.oninput = onClipPlaneNormalChange;
</script>
<script async type="text/javascript" src="WrappedAsyncClipper.js"></script>
</body>
</html>
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