数学

站点: 聚观点-创意编程
课程: 必修1. 互联网创意编程基础
图书: 数学
打印: 访客用户
日期: 2024年04月20日 Saturday 06:59

目录

1. 表达式

mathlive表达式和mathjs表达式

2.1. PAI


HALF_PI

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.2. 角度


HALF_PI

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.3. 两点距离xy


dist()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.4. 两点距离xyz


dist()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.5. 数值映射


map()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.6. 限制数值


constrain()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.7. 平方


sq()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.8. 欧拉数e的指数


exp()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





2.9. 计算插值


lerp()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.1. 向量xyz


createVector()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.2. 向量设置


set()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.3. 向量复制


copy()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.4. 向量相加xyz


add()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.5. 向量相加ab


add()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.6. 向量求余xyz


rem()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.7. 向量求余ab


rem()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.8. 向量相减xyz


sub()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.9. 向量相减ab


sub()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.10. 向量相乘xyz


mult()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.11. 向量相乘ab


mult()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.12. 向量相除xyz


div()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.13. 向量相除ab


div()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.14. 向量长度


mag()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.15. 向量长度平方


magSq()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.16. 向量缩放


limit()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.17. 向量设置长度


setMag()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.18. 向量内积xyz


dot()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.19. 向量内积ab


dot()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.20. 向量外积xyz


cross()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.21. 向量外积ab


cross()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.22. 向量欧式距离xyz


dist()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.23. 向量欧式距离ab


dist()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.24. 向量归一化


normalize()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.25. 向量归一化结果


normalize()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.26. 向量角度


heading()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.27. 设置向量角度


setHeading()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.28. 向量旋转弧度


rotate()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.29. 向量旋转弧度(计算)


rotate()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.30. 向量夹角


angleBetween()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.31. 向量插值xyz


lerp()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.32. 向量插值ab


lerp()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.33. 向量反射


reflect()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.34. 向量的数组


array()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.35. 向量相等xyz


equals()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.36. 创建二维向量角度


fromAngle()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.37. 创建三维向量角度


fromAngles()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.38. 随机二维向量


random2D()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.39. 随机三维向量


random3D()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.40. 向量的xyz


x

y

z

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.41. 向量部分赋值


x

y

z

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.42. 向量长度


mag()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





3.43. 调试向量


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





4.1. 二维数组的行列和初始值


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





4.2. 二维数组大小


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





4.3. 二维数组的值行列


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





4.4. 二维数组设置


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





4.5. 二维数组增加数值


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





5.1. 柏林噪声种子值


noiseSeed()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





5.2. 柏林噪声xyz


noise()

柏林噪声是一个随机序列生成器,与标准的random()函数相比,它产生更自然有序和谐的数字序列。此外,柏林噪声可以在多维空间中定义。关于柏林噪声这个函数更详细的说明可以进一步阅读《代码本色 : 用编程模拟自然系统》(The Nature of Code: Simulating Natural Systems with Processing)这本书引言的部分。

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





5.3. 柏林噪声细节


noiseDetail()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.1. 随机数种子值


randomSeed()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.2. 高斯随机数


randomGaussian()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.3. 随机数


random()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.4. 随机数小于1


random()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.5. 随机数范围


random()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.6. 随机整数范围


random()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





6.7. 随机选择

▶️运行示例代码


6.8. 随机数数组


random()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





7.1. 弧度


radians()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





7.2. 角度


degrees()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





7.3. 弦函数


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





7.4. 点xy方位角


preload()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





7.5. 角度模式


angleMode()

示例:

▶️运行示例代码



let x = 0;
function setup() {
  createCanvas(100, 100);
}
function draw() {
  background(204);
  x = x + 0.1;
  if (x > width) {
    x = 0;
  }
  line(x, 0, x, height);
}
function mousePressed() {
  noLoop();
}
function mouseReleased() {
  loop();
}

舞台区显示的画布内容如下:





8. 信号

各种信号生成器、处理器、过滤器

▶️运行示例代码


参看 https://github.com/IDMNYU/p5.js-func