143 lines
3.9 KiB
HTML
143 lines
3.9 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
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<meta name="viewport"
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content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
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<title>样条插值</title>
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<script src="./Build/Cesium/Cesium.js"></script>
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<link href="./Build/Cesium/Widgets/widgets.css" rel="stylesheet">
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<style>
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html,
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body,
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#cesiumContainer {
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width: 100%;
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height: 100%;
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margin: 0;
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padding: 0;
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overflow: hidden;
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background-color: #000000;
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}
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</style>
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</head>
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<body>
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<div id="cesiumContainer">
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</div>
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<script>
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var viewer = new Cesium.Viewer('cesiumContainer', {
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imageryProvider: new Cesium.UrlTemplateImageryProvider({
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url: 'http://www.google.cn/maps/vt?lyrs=s@716&x={x}&y={y}&z={z}'
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})
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});
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// 控制点
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var controls = [
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Cesium.Cartesian3.fromDegrees(110, 10),
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Cesium.Cartesian3.fromDegrees(111, 11),
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Cesium.Cartesian3.fromDegrees(112, 9),
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Cesium.Cartesian3.fromDegrees(114, 10),
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Cesium.Cartesian3.fromDegrees(113, 8)
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];
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for (var i = 0; i < controls.length; i++) {
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viewer.entities.add({
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position: controls[i],
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point: {
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color: Cesium.Color.RED,
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pixelSize: 10
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}
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});
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}
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viewer.zoomTo(viewer.entities);
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// CatmullRomSpline
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var spline = new Cesium.CatmullRomSpline({
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points: controls,
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times: [0.0, 0.25, 0.5, 0.75, 1],
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});
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var positions = [];
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for (var i = 0; i <= 100; i++) {
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var cartesian3 = spline.evaluate(i / 100);
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positions.push(cartesian3);
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viewer.entities.add({
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position: cartesian3,
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point: {
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color: Cesium.Color.BLUE,
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pixelSize: 6
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}
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});
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}
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viewer.entities.add({
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name: 'CatmullRomSpline',
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polyline: {
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positions: positions,
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width: 3,
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material: Cesium.Color.WHITE
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}
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});
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// HermiteSpline
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var spline = Cesium.HermiteSpline.createNaturalCubic({
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times: [0.0, 0.25, 0.5, 0.75, 1],
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points: controls
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});
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var positions = [];
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for (var i = 0; i <= 100; i++) {
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var cartesian3 = spline.evaluate(i / 100);
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positions.push(cartesian3);
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viewer.entities.add({
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position: cartesian3,
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point: {
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color: Cesium.Color.WHITE,
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pixelSize: 6
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}
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});
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}
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viewer.entities.add({
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name: 'HermiteSpline',
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polyline: {
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positions: positions,
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width: 3,
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material: Cesium.Color.RED
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}
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});
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// LinearSpline
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var spline = new Cesium.LinearSpline({
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times: [0.0, 0.25, 0.5, 0.75, 1],
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points: controls
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});
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var positions = [];
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for (var i = 0; i <= 100; i++) {
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var cartesian3 = spline.evaluate(i / 100);
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positions.push(cartesian3);
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viewer.entities.add({
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position: cartesian3,
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point: {
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color: Cesium.Color.YELLOW,
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pixelSize: 6
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}
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});
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}
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viewer.entities.add({
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name: 'LinearSpline',
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polyline: {
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positions: positions,
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width: 3,
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material: Cesium.Color.GREEN
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}
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});
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</script>
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</body>
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</html> |