surface-rose.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Rose - ECHARTS-GL</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
<link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="lib/dat.gui.js"></script>
<script src="js/commonUI.js"></script>
<script>
var chart = echarts.init(document.getElementById('main'));
var sin = Math.sin;
var cos = Math.cos;
var pow = Math.pow;
var sqrt = Math.sqrt;
var cosh = Math.cosh;
var sinh = Math.sinh;
var exp = Math.exp;
var PI = Math.PI;
var square = function (x) {
return x*x;
}
var mod2 = function (a, b) {
var c = a % b;
return c > 0 ? c : (c + b);
}
var theta1 = -(20/9) * PI;
var theta2 = 15 * PI;
function getParametricEquation() {
return {
u: {
min: 0,
max: 1,
step: 1 / 24
},
v: {
min: theta1,
max: theta2,
step: (theta2 - theta1) / 575
},
x: function (x1, theta) {
var phi = (PI/2)*exp(-theta/(8*PI));
var y1 = 1.9565284531299512*square(x1)*square(1.2768869870150188*x1-1)*sin(phi);
var X = 1-square(1.25*square(1-mod2((3.6*theta),(2*PI))/PI)-0.25)/2;
var r = X*(x1*sin(phi)+y1*cos(phi));
return r * sin(theta);
},
y: function (x1, theta) {
var phi = (PI/2)*exp(-theta/(8*PI));
var y1 = 1.9565284531299512*square(x1)*square(1.2768869870150188*x1-1)*sin(phi);
var X = 1-square(1.25*square(1-mod2((3.6*theta),(2*PI))/PI)-0.25)/2;
var r = X*(x1*sin(phi)+y1*cos(phi));
return r * cos(theta);
},
z: function (x1, theta) {
var phi = (PI/2)*exp(-theta/(8*PI));
var y1 = 1.9565284531299512*square(x1)*square(1.2768869870150188*x1-1)*sin(phi);
var X = 1-square(1.25*square(1-mod2((3.6*theta),(2*PI))/PI)-0.25)/2;
var r = X*(x1*sin(phi)+y1*cos(phi));
return X*(x1*cos(phi)-y1*sin(phi));
}
};
}
chart.setOption({
toolbox: {
feature: {
saveAsImage: {
backgroundColor: '#111'
}
},
iconStyle: {
normal: {
borderColor: '#fff'
}
},
left: 0
},
xAxis3D: {
type: 'value'
},
yAxis3D: {
type: 'value'
},
zAxis3D: {
type: 'value'
},
grid3D: {
show: false,
axisPointer: {
show: false
},
axisLine: {
lineStyle: {
color: '#fff'
}
},
postEffect: {
enable: true,
screenSpaceAmbientOcclusion: {
enable: true,
radius: 10,
intensity: 2
},
edge: {
enable: true
}
},
light: {
main: {
intensity: 3,
shadow: true,
},
ambient: {
intensity: 0
},
ambientCubemap: {
texture: 'asset/canyon.hdr',
exposure: 0,
diffuseIntensity: 1,
specularIntensity: 0.5
}
},
viewControl: {
// projection: 'orthographic'
}
},
series: [{
type: 'surface',
parametric: true,
shading: 'realistic',
silent: true,
wireframe: {
show: false
},
realisticMaterial: {
detailTexture: 'asset/rose.jpg',
roughness: 0.7,
metalness: 0,
textureTiling: [200, 20]
},
itemStyle: {
color: '#fff'
},
parametricEquation: getParametricEquation()
}]
});
window.addEventListener('resize', function () {
chart.resize();
});
</script>
</body>
</html>