如何使用代码将三维坐标数组绘制成不规则图形？

三维坐标数组绘制不规则图形

本文旨在解答如何利用三维坐标数组绘制三维不规则图形的问题。

问题

给定三维坐标数组：

[[162,81,10],[162,704,10],[773,704,20],[773,145,20]]

如何使用代码绘制出该图形？

解决方案

可以使用 three.js 或 amcharts 等 javascript 库来实现三维图形的绘制。

three.js 示例：

// 创建场景
const scene = new three.scene();

// 创建相机
const camera = new three.perspectivecamera(75, window.innerwidth / window.innerheight, 0.1, 1000);

// 创建渲染器
const renderer = new three.webglrenderer();
renderer.setsize(window.innerwidth, window.innerheight);

// 创建几何体
const geometry = new three.geometry();
const coordinates = [[162,81,10],[162,704,10],[773,704,20],[773,145,20]];
for (let i = 0; i < coordinates.length; i++) {
  geometry.vertices.push(new three.vector3(...coordinates[i]));
}

geometry.faces.push(new three.face3(0, 1, 2));
geometry.faces.push(new three.face3(0, 2, 3));

// 创建材质
const material = new three.meshbasicmaterial({color: 0x00ff00, wireframe: true});

// 创建网格
const mesh = new three.mesh(geometry, material);

// 添加网格到场景
scene.add(mesh);

// 渲染场景
renderer.render(scene, camera);

amcharts 示例：

// 创建图表
const chart = AmCharts.makeChart("chartdiv", {
  "type": "3d",
  "theme": "light",
  "dataProvider": [{
    "x": 162,
    "y": 81,
    "z": 10
  }, {
    "x": 162,
    "y": 704,
    "z": 10
  }, {
    "x": 773,
    "y": 704,
    "z": 20
  }, {
    "x": 773,
    "y": 145,
    "z": 20
  }],
  "graphs": [{
    "lineAlpha": 1,
    "fillAlphas": 0.8,
    "lineColor": "#ff0000",
    "balloonText": "[[category]]: [[value]]",
    "valueField": "z",
    "type": "column"
  }],
  "categoryAxis": {
    "gridPosition": "start"
  },
  "depth3D": 100,
  "angle": 35,
  "export": {
    "enabled": true
  }
});

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