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<!DOCTYPE html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style>
:root {
color-scheme: light dark;
}
html,
body {
/*remove default margin*/
margin: 0;
/* make body fill the browser */
height: 100%;
}
#outer {
width: 100%;
height: 100%;
display: block;
overflow: auto;
}
.canvas {
display: inline-block;
padding: 1em;
background: #888;
margin: 1em;
}
.size0>canvas {
width: 300px;
height: 300px;
}
.size1>canvas {
width: 400px;
height: 300px;
}
.size2>canvas {
width: 300px;
height: 400px;
}
.size3>canvas {
width: 400px;
height: 400px;
}
</style>
</head>
<body>
<div id="outer">
</div>
<script>
const numCanvases = 16;
/**
* Lock canvas size for VTK rendering unit tests. These settings make the canvas ignore
* resize events from the parent HTML element.
*/
function lockCanvasSize(wasmRuntime) {
try {
if (typeof wasmRuntime._setDefaultExpandVTKCanvasToContainer !== 'undefined') {
wasmRuntime._setDefaultExpandVTKCanvasToContainer(false);
}
if (typeof wasmRuntime._setDefaultInstallHTMLResizeObserver !== 'undefined') {
wasmRuntime._setDefaultInstallHTMLResizeObserver(false);
}
} catch (_e) {}
}
const resizeObserver = new ResizeObserver((entries) => {
for (const entry of entries) {
const canvas = entry.target;
const width = entry.contentBoxSize[0].inlineSize;
const height = entry.contentBoxSize[0].blockSize;
const scaledWidth = Math.max(
1,
width * window.devicePixelRatio + 0.5
);
const scaledHeight = Math.max(
1,
height * window.devicePixelRatio + 0.5
);
Module._updateSize(canvas.internalIndex, scaledWidth, scaledHeight);
Module._render(canvas.internalIndex);
}
});
function rand(min, max) {
if (min === undefined) {
max = 1;
min = 0;
} else if (max === undefined) {
max = min;
min = 0;
}
return Math.random() * (max - min) + min;
}
function addCanvas(canvasId, sourceName, iCanvas) {
canvasId = maybeCStringToJsString(canvasId);
sourceName = maybeCStringToJsString(sourceName);
const outerElem = document.body.querySelector("#outer");
// making this
// <div class="product size?">
// <canvas></canvas>
// <div>Canvas#: ?</div>
// </div>
const newCanvas = document.createElement('canvas');
newCanvas.id = canvasId;
newCanvas.oncontextmenu = (event) => event.preventDefault();
newCanvas.tabIndex = -1;
newCanvas.internalIndex = iCanvas;
resizeObserver.observe(newCanvas);
const container = document.createElement('div');
container.className = `canvas size${Math.floor(rand(1, 4))}`;
const description = document.createElement('div');
description.textContent = `Canvas #: ${iCanvas + 1} ${sourceName}`;
container.onmouseenter = () => {
Module._startEventLoop(iCanvas);
newCanvas.focus();
};
container.onmouseleave = () => {
Module._stopEventLoop(iCanvas);
};
container.appendChild(newCanvas);
container.appendChild(description);
outerElem.appendChild(container);
setTimeout((i) => Module._render(i), 1000, iCanvas);
}
var vtkWasmRuntime = null;
var Module = {
arguments: [`${numCanvases}`],
preRun: (runtime) => {
// cache the VTK wasm runtime instance.
vtkWasmRuntime = runtime;
vtkWasmRuntime.ENV.VTK_GRAPHICS_BACKEND = "WEBGPU";
},
onRuntimeInitialized: () => {
if (vtkWasmRuntime !== null) {
lockCanvasSize(vtkWasmRuntime);
}
},
};
</script>
{{{ SCRIPT }}}
</body>
</html>
|
