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zorder.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>MathBox - zOrder</title>
<script
type="text/javascript"
src="https://cdn.jsdelivr.net/npm/three@0.137.0/build/three.min.js"
></script>
<script
type="text/javascript"
src="https://cdn.jsdelivr.net/npm/three@0.137.0/examples/js/controls/OrbitControls.js"
></script>
<!--
- a minified version mathbox.min.js is also available;
- recommend using a specific version (not @latest) in public sites
-->
<script
type="text/javascript"
src="https://cdn.jsdelivr.net/npm/mathbox@latest/build/bundle/mathbox.js"
></script>
<link
rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/mathbox@latest/build/mathbox.css"
/>
<meta name="viewport" content="initial-scale=1, maximum-scale=1" />
</head>
<body>
<script>
mathbox = MathBox.mathBox({
plugins: ["core", "controls", "cursor"],
controls: {
klass: THREE.OrbitControls,
},
});
three = mathbox.three;
three.camera.position.set(2.3, 1, 2);
three.renderer.setClearColor(new THREE.Color(0xffffff), 1.0);
view = mathbox.cartesian({
range: [
[-1, 1],
[-1, 1],
[-1, 1],
],
scale: [1, 1, 1],
});
// Left: Draw in document order, front-to-back, with incorrect occlusion
view
.transform({
position: [-1.1, 0, 0],
})
.area({
width: 2,
height: 2,
})
.transform({
position: [0, 0, 0.2],
})
.surface({
opacity: 0.5,
color: "#c04000",
})
.end()
.transform({
position: [0, 0, 0],
})
.surface({
opacity: 0.5,
color: "#40c000",
})
.end()
.transform({
position: [0, 0, -0.2],
})
.surface({
opacity: 0.5,
color: "#3090ff",
})
.end();
// Right: Draw in manual order, back-to-front, with correct occlusion from front side
view
.transform({
position: [1.1, 0, 0],
})
.area({
width: 2,
height: 2,
})
.transform({
position: [0, 0, 0.2],
})
.surface({
opacity: 0.5,
color: "#c04000",
zOrder: 3,
})
.end()
.transform({
position: [0, 0, 0],
})
.surface({
opacity: 0.5,
color: "#40c000",
zOrder: 2,
})
.end()
.transform({
position: [0, 0, -0.2],
})
.surface({
opacity: 0.5,
color: "#3090ff",
zOrder: 1,
})
.end();
</script>
</body>
</html>