2024-10-14 07:25:12 +00:00
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Sphere sampler</title>
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<meta charset="UTF-8" />
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<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/jsxgraph/distrib/jsxgraph.css" />
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<script type="text/javascript" charset="UTF-8" src="https://cdn.jsdelivr.net/npm/jsxgraph/distrib/jsxgraphcore.js"></script>
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</head>
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<body>
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2024-10-22 08:19:56 +00:00
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<a href="../">↩ Back to index</a>
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2024-10-22 08:15:53 +00:00
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2024-10-14 07:25:12 +00:00
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<h1>Sphere sampler</h1>
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2024-10-21 23:31:15 +00:00
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<!-- creating spheres -->
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2024-10-14 07:25:12 +00:00
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<h2>Creating spheres</h2>
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<p>
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Right now, there are two ways to create a <a href="https://jsxgraph.org/docs/symbols/Sphere3D.html#constructor"><code>Sphere3D</code></a>:
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<ul>
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<li>Give its center and its radius.</li>
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<li>Give its center a point on it.</li>
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</ul>
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Point data can be given either in coordinates or as a <a href="https://jsxgraph.org/docs/symbols/Point3D.html#constructor"><code>Point3D</code></a>.
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</p>
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<div id="creating-spheres-board" class="jxgbox" style="width:600px; height:600px"></div>
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<script type="text/javascript">
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// to prevent variable name conflicts, we define variables locally using `let`
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// and put the code for each board in its own block
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{
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// create a JSXGraph board and draw a 3D view on it
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let board = JXG.JSXGraph.initBoard(
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'creating-spheres-board',
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{
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boundingbox: [-8, 8, 8,-8],
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axis: false,
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showcopyright: false,
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shownavigation: false
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}
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);
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let view = board.create(
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'view3d',
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[[-4.5, -4.5], [9, 9],
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[[0, 4], [0, 4], [0, 4]]],
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{
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xPlaneRear: {fillOpacity: 0.2, gradient: null},
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yPlaneRear: {fillOpacity: 0.2, gradient: null},
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zPlaneRear: {fillOpacity: 0.2, gradient: null}
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}
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);
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// create a sphere by giving:
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// - its center (in coordinates)
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// - its radius
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view.create(
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'sphere3d',
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[[3, 1, 2], 0.8]
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);
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// create a sphere by giving:
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// - its center (in coordinates)
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// - a point on it (in coordinates)
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view.create(
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'sphere3d',
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[[3, 3, 2], [3, 3, 2.8]]
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);
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// create a sphere by giving:
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// - its center (in coordinates)
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// - a point on it (as a Point3D)
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let sharedPoint = view.create(
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'point3d',
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[1, 2, 2]
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);
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view.create(
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'sphere3d',
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[[1, 1, 2], sharedPoint]
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);
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// create a sphere by giving:
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// - its center (as a Point3D)
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// - a point on it (as a Point3D)
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let center = view.create(
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'point3d',
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[1, 3, 2]
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);
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view.create(
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'sphere3d',
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[center, sharedPoint]
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);
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}
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</script>
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2024-10-21 23:31:15 +00:00
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<!-- styling spheres -->
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<h2>Styling spheres</h2>
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<p>Here are some styling options for spheres and the points that define them.</p>
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<div id="styling-spheres-board" class="jxgbox" style="width:600px; height:600px"></div>
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2024-10-14 07:25:12 +00:00
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<script type="text/javascript">
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// to prevent variable name conflicts, we define variables locally using `let`
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// and put the code for each board in its own block
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|
|
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{
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// create a JSXGraph board and draw a 3D view on it
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let board = JXG.JSXGraph.initBoard(
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'styling-spheres-board',
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{
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boundingbox: [-8, 8, 8,-8],
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axis: false,
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showCopyright: false,
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showNavigation: false
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}
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);
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let view = board.create(
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'view3d',
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[[-4.5, -4.5], [9, 9],
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[[0, 4], [0, 4], [0, 4]]],
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{
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xPlaneRear: {fillOpacity: 0.2, gradient: null},
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yPlaneRear: {fillOpacity: 0.2, gradient: null},
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zPlaneRear: {fillOpacity: 0.2, gradient: null}
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}
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);
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// create a sphere with a custom stroke style and main color. the center is
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// created at the given coordinates, with the style specified in the
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// `center` attribute
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view.create(
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'sphere3d',
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[[3, 1, 2], 0.8],
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{
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strokeColor: '#0080ff',
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strokeOpacity: 0.5,
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gradientSecondColor: '#0080ff',
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center: {
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size: 5,
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strokeWidth: 1,
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strokeColor: '#0000c0',
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fillColor: 'white',
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gradientSecondColor: '#0000ff',
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highlightStrokeColor: '#0000c0',
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withLabel: false
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}
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}
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);
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// create a sphere with a custom stroke style and main color. the center and
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// a point on the sphere are created at the given coordinates, with the
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// styles specified in the `center` and `point` attributes
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view.create(
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'sphere3d',
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[[3, 3, 2], [3, 3, 2.8]],
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{
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strokeColor: '#4000ff',
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strokeOpacity: 0.5,
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gradientSecondColor: '#4000ff',
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center: {
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size: 5,
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strokeWidth: 1,
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strokeColor: '#9000c0',
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fillColor: 'white',
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gradientSecondColor: '#c000ff',
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highlightStrokeColor: '#9000c0',
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withLabel: false
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},
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point: {
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strokeWidth: 1,
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strokeColor: '#c06000',
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fillColor: 'white',
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gradientSecondColor: '#ff8000',
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highlightStrokeColor: '#c06000',
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withLabel: false
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}
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}
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);
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// create a sphere with a custom stroke style, main color, and highlight
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// color
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view.create(
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'sphere3d',
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[[1, 1, 2], 0.8],
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{
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strokeColor: '#4000ff',
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strokeOpacity: 0.5,
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fillColor: '#ff00ff',
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gradientSecondColor: '#4000ff',
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center: {
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size: 5,
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strokeWidth: 1,
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strokeColor: '#9000c0',
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fillColor: 'white',
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gradientSecondColor: '#c000ff',
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highlightStrokeColor: '#9000c0',
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withLabel: false
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}
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}
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);
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// create a sphere with a custom stroke style, main color, and opacity
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view.create(
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'sphere3d',
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[[1, 3, 2], 0.8],
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{
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/*strokeColor: '#0000ff',
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strokeOpacity: 0.5,
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fillColor: 'white',
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gradient: 'radial',
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gradientSecondColor: '#0000ff',
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gradientFX: 0.7,
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gradientFY: 0.3,
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fillOpacity: 0.2,*/
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strokeColor: '#0080ff',
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strokeOpacity: 0.5,
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gradientSecondColor: '#0080ff',
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fillOpacity: 0.8,
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center: {
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size: 5,
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strokeWidth: 1,
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strokeColor: '#0000c0',
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fillColor: 'white',
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gradientSecondColor: '#0000ff',
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highlightStrokeColor: '#0000c0',
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withLabel: false
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}
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}
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);
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}
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</script>
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2024-10-21 23:31:15 +00:00
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2024-10-14 07:25:12 +00:00
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</body>
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</html>
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