怎么用编程画圆环图案

时间:2025-01-23 20:41:31 游戏攻略

使用Python和matplotlib库

导入绘图库

```python

import matplotlib.pyplot as plt

```

创建画布

```python

fig, ax = plt.subplots()

```

绘制圆环

```python

circle = plt.Circle((0, 0), 5, fill=False)

ax.add_artist(circle)

```

设置坐标轴范围和标签

```python

ax.set_xlim([10, 10])

ax.set_ylim([10, 10])

ax.set_xlabel('X')

ax.set_ylabel('Y')

```

显示图表

```python

plt.show()

```

使用Go语言

```go

package main

import (

"math"

"time"

func main() {

p := NewPainter()

p.up()

p.size(4)

for i := 0; i < 361; i++ {

p.c(1)

p.move(100*math.Cos(3.1415626*float64(i)/180), 100*math.Sin(3.1415926*float64(i)/180))

p.down()

p.line(100*math.Cos(3.1415626*float64(i)/180), 100*math.Sin(3.1415926*float64(i)/180))

}

p.up()

for j := 0; j < 20; j++ {

p.c(2)

p.move(100*math.Cos(3.1415626*float64(i)/180)+20*math.Cos(3.1415926*float64(j)/180), 20*math.Sin(3.1415926*float64(j)/180)+100*math.Sin(3.1415926*float64(i)/180))

p.down()

p.line(100*math.Cos(3.1415626*float64(i)/180)+20*math.Cos(3.1415926*float64(j)/180), 20*math.Sin(3.1415926*float64(j)/180)+100*math.Sin(3.1415926*float64(i)/180))

y++

}

}

```

使用JavaScript和HTML5 Canvas

设置画布

```html

```

获取绘图上下文

```javascript

var canvas = document.getElementById('myCanvas');

var ctx = canvas.getContext('2d');

```

绘制圆环

```javascript

var centerX = canvas.width / 2;

var centerY = canvas.height / 2;

var rad = Math.PI * 2 / 100;

var speed = 10;

canvas.onclick = function() {

window.open('flightHour.html');

};

function blueCircle(n) {

ctx.save();

ctx.strokeStyle = "A757A8";

ctx.lineCap = "round";

ctx.lineWidth = 30;

ctx.beginPath();

ctx.arc(centerX, centerY, 30, 0, 2 * Math.PI, false);

ctx.stroke();

ctx.closePath();

ctx.restore();

}

```

使用turtle库