Home > Web Front-end > JS Tutorial > body text

p5.js Pythagoras tree implementation code

亚连
Release: 2018-05-26 15:47:51
Original
1705 people have browsed it

This article mainly introduces the implementation code of p5.js Pythagoras tree. Now I will share it with you and give you a reference.

This article introduces the implementation code of p5.js Pythagoras tree and shares it with everyone. The details are as follows:

The effect is as follows:

Main methods

  1. translate()

  2. rotate()

  3. rect()

  4. push()

  5. pop()

  6. map()

Main idea

Recursion

Sketch

Process Decomposition

1. Recursive function of Pythagoras tree

function Pythagorian(x){
 noStroke();
 fill(107, 142, 35,map(x, 0, a, 150, 255));//根据正方形边长设置填充色
 rect(0,0,x,x);//绘制当前的正方形
 
 if(x <= 3) return 0;//当正方形边长小于3时,结束递归

 /* 绘制右上角的正方形 */ 
 push();
 rotate(PI / 2 - t);//坐标轴顺时针旋转约37deg
 translate(0,-x/5 * 3 - x/5*4);//坐标轴向上平移3边+4边的长度
 Pythagorian(x/5*4);//递归调用毕达哥拉斯函数
 pop();
 
 /* 绘制左上角的正方形 */
 push();
 rotate( - t);//坐标轴逆时针旋转约53deg
 translate(0,-x/5 * 3);//坐标轴向上平移3边的长度
 Pythagorian(x/5*3);//递归调用毕达哥拉斯函数
 pop(); 
 
}
Copy after login

2. Declare variables and create canvas

var a = 100; //最大正方形边长
var t;//4边所对应的角度
function setup(){
 t = 53.1301024 / 360 * 2 * PI;//约为53deg
 createCanvas(windowWidth, windowHeight);//创建画布
 background(255);
 noLoop();//draw()函数只执行一次
}
Copy after login

3. Start drawing the Pythagoras tree

function draw(){
 translate(windowWidth/2, windowHeight - a * 2);//将坐标系平移至画布中间底部
 Pythagorian(a);//调用毕达哥拉斯递归函数
}
Copy after login

Complete code for drawing the Pythagoras tree

var a = 100;
var t;
function setup(){
 t = 53.1301024 / 360 * 2 * PI;
 createCanvas(windowWidth, windowHeight);
 background(255);
 noLoop();
}
function draw(){
 translate(windowWidth/2, windowHeight - a * 2);
 Pythagorian(a);
 
}
function Pythagorian(x){
 noStroke();
 fill(107, 142, 35,map(x, 0, a, 150, 255));
 rect(0,0,x,x);
 
 if(x <= 3) return 0;
 
 push();
 rotate(PI / 2 - t);
 translate(0,-x/5 * 3 - x/5*4);
 Pythagorian(x/5*4);
 pop();
 
 push();
 rotate( - t);
 translate(0,-x/5 * 3);
 Pythagorian(x/5*3);
 pop(); 
 
}
Copy after login

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

Related articles:

Ajax file upload successfully solves browser compatibility issues

Ajax method of sending and receiving binary byte stream data

laypage front-end paging plug-in implements ajax asynchronous paging


The above is the detailed content of p5.js Pythagoras tree implementation code. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template