属于程序员的浪漫，Html、Java爱心代码
Html爱心代码
HTML部分：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>爱心代码</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<canvas id="canvas" width="1400" height="600"></canvas>
<script src="js/script,js"></script>
</body>
</html>
CSS代码：
body{
background-color: #000;
margin: 0;
overflow: hidden;
background-repeat: no-repeat;
}
JavaScript代码：
var canvas = document.getElementById("canvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
// Initialize the GL context
var gl = canvas.getContext('webgl');
if (!gl) {
console.error("Unable to initialize WebGL.");
}
//Time step
var dt = 0.015;
//Time
var time = 0.0;
//************** Shader sources **************
var vertexSource = `
attribute vec2 position;
void main() {
gl_Position = vec4(position, 0.0, 1.0);
}
`;
var fragmentSource = `
precision highp float;
uniform float width;
uniform float height;
vec2 resolution = vec2(width, height);
uniform float time;
#define POINT_COUNT 8
vec2 points[POINT_COUNT];
const float speed = -0.5;
const float len = 0.25;
float intensity = 0.9;
float radius = 0.015;
//https://www.shadertoy.com/view/MlKcDD
//Signed distance to a quadratic bezier
float sdBezier(vec2 pos, vec2 A, vec2 B, vec2 C){
vec2 a = B - A;
vec2 b = A - 2.0*B + C;
vec2 c = a * 2.0;
vec2 d = A - pos;
float kk = 1.0 / dot(b,b);
float kx = kk * dot(a,b);
float ky = kk * (2.0*dot(a,a)+dot(d,b)) / 3.0;
float kz = kk * dot(d,a);
float res = 0.0;
float p = ky - kx*kx;
float p3 = p*p*p;
float q = kx*(2.0*kx*kx - 3.0*ky) + kz;
float h = q*q + 4.0*p3;
if(h >= 0.0){
h = sqrt(h);
vec2 x = (vec2(h, -h) - q) / 2.0;
vec2 uv = sign(x)*pow(abs(x), vec2(1.0/3.0));
float t = uv.x + uv.y - kx;
t = clamp( t, 0.0, 1.0 );
// 1 root
vec2 qos = d + (c + b*t)*t;
res = length(qos);
}else{
float z = sqrt(-p);
float v = acos( q/(p*z*2.0) ) / 3.0;
float m = cos(v);
float n = sin(v)*1.732050808;
vec3 t = vec3(m + m, -n - m, n - m) * z - kx;
t = clamp( t, 0.0, 1.0 );
// 3 roots
vec2 qos = d + (c + b*t.x)*t.x;
float dis = dot(qos,qos);
res = dis;
qos = d + (c + b*t.y)*t.y;
dis = dot(qos,qos);
res = min(res,dis);
qos = d + (c + b*t.z)*t.z;
dis = dot(qos,qos);
res = min(res,dis);
res = sqrt( res );
}
return res;
}
//http://mathworld.wolfram.com/HeartCurve.html
vec2 getHeartPosition(float t){
return vec2(16.0 * sin(t) * sin(t) * sin(t),
-(13.0 * cos(t) - 5.0 * cos(2.0*t)
- 2.0 * cos(3.0*t) - cos(4.0*t)));
}
//https://www.shadertoy.com/view/3s3GDn
float getGlow(float dist, float radius, float intensity){
return pow(radius/dist, intensity);
}
float getSegment(float t, vec2 pos, float offset, float scale){
for(int i = 0; i < POINT_COUNT; i++){
points[i] = getHeartPosition(offset + float(i)*len + fract(speed * t) * 6.28);
}
vec2 c = (points[0] + points[1]) / 2.0;
vec2 c_prev;
float dist = 10000.0;
for(int i = 0; i < POINT_COUNT-1; i++){
//https://tinyurl.com/y2htbwkm
c_prev = c;
c = (points[i] + points[i+1]) / 2.0;
dist = min(dist, sdBezier(pos, scale * c_prev, scale * points[i], scale * c));
}
return max(0.0, dist);
}
void main(){
vec2 uv = gl_FragCoord.xy/resolution.xy;
float widthHeightRatio = resolution.x/resolution.y;
vec2 centre = vec2(0.5, 0.5);
vec2 pos = centre - uv;
pos.y /= widthHeightRatio;
//Shift upwards to centre heart
pos.y += 0.02;
float scale = 0.000015 * height;
float t = time;
//Get first segment
float dist = getSegment(t, pos, 0.0, scale);
float glow = getGlow(dist, radius, intensity);
vec3 col = vec3(0.0);
//White core
col += 10.0*vec3(smoothstep(0.003, 0.001, dist));
//Pink glow
col += glow * vec3(0.94,0.14,0.4);
//Get second segment
dist = getSegment(t, pos, 3.4, scale);
glow = getGlow(dist, radius, intensity);
//White core
col += 10.0*vec3(smoothstep(0.003, 0.001, dist));
//Blue glow
col += glow * vec3(0.2,0.6,1.0);
//Tone mapping
col = 1.0 - exp(-col);
//Output to screen
gl_FragColor = vec4(col,1.0);
}
`;
//************** Utility functions **************
window.addEventListener('resize', onWindowResize, false);
function onWindowResize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
gl.viewport(0, 0, canvas.width, canvas.height);
gl.uniform1f(widthHandle, window.innerWidth);
gl.uniform1f(heightHandle, window.innerHeight);
}
//Compile shader and combine with source
function compileShader(shaderSource, shaderType) {
var shader = gl.createShader(shaderType);
gl.shaderSource(shader, shaderSource);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
throw "Shader compile failed with: " + gl.getShaderInfoLog(shader);
}
return shader;
}
//From https://codepen.io/jlfwong/pen/GqmroZ
//Utility to complain loudly if we fail to find the attribute/uniform
function getAttribLocation(program, name) {
var attributeLocation = gl.getAttribLocation(program, name);
if (attributeLocation === -1) {
throw 'Cannot find attribute ' + name + '.';
}
return attributeLocation;
}
function getUniformLocation(program, name) {
var attributeLocation = gl.getUniformLocation(program, name);
if (attributeLocation === -1) {
throw 'Cannot find uniform ' + name + '.';
}
return attributeLocation;
}
//************** Create shaders **************
//Create vertex and fragment shaders
var vertexShader = compileShader(vertexSource, gl.VERTEX_SHADER);
var fragmentShader = compileShader(fragmentSource, gl.FRAGMENT_SHADER);
//Create shader programs
var program = gl.createProgram();
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);
gl.linkProgram(program);
gl.useProgram(program);
//Set up rectangle covering entire canvas
var vertexData = new Float32Array([-1.0, 1.0, // top left
-1.0, -1.0, // bottom left
1.0, 1.0, // top right
1.0, -1.0, // bottom right
]);
//Create vertex buffer
var vertexDataBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vertexDataBuffer);
gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
// Layout of our data in the vertex buffer
var positionHandle = getAttribLocation(program, 'position');
gl.enableVertexAttribArray(positionHandle);
gl.vertexAttribPointer(positionHandle,
2, // position is a vec2 (2 values per component)
gl.FLOAT, // each component is a float
false, // don't normalize values
2 * 4, // two 4 byte float components per vertex (32 bit float is 4 bytes)
0 // how many bytes inside the buffer to start from
);
//Set uniform handle
var timeHandle = getUniformLocation(program, 'time');
var widthHandle = getUniformLocation(program, 'width');
var heightHandle = getUniformLocation(program, 'height');
gl.uniform1f(widthHandle, window.innerWidth);
gl.uniform1f(heightHandle, window.innerHeight);
function draw() {
//Update time
time += dt;
//Send uniforms to program
gl.uniform1f(timeHandle, time);
//Draw a triangle strip connecting vertices 0-4
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
requestAnimationFrame(draw);
}
draw();
效果：
Java代码
简洁版：
public class love {
public static void main(String[] args) {
for (float y=1.5f;y>-1.5f;y-=0.15f){
for (float x=-1.5f;x<1.5f;x+=0.05){
float a = x*x+y*y-1;
if ((a*a*a-x*x*y*y*y)<=0.0){
System.out.print("*");
}else {
System.out.print(" ");
}
}
System.out.println();
}
}
}
效果预览：
升级版：
public class iloveyou {
public static void main(String[] args) throws InterruptedException {
int count=0;
for (float y=2.5f;y>-2.0f;y-=0.12f){
for (float x=-2.3f;x<2.3f;x+=0.041f){
float a = x*x+y*y-4f;
if ((a*a*a-x*x*y*y*y)<-0.0f){
String str="I LOVE YOU!";
int num =count%str.length();
System.err.print(str.charAt(num));
count++;
}else{
System.err.print(" ");
}
}
System.err.println();
Thread.sleep(100);
}
}
}
输出结果：
"C:\Program Files\Java\jdk-17.0.4.1\bin\java.exe" "-javaagent:D:\encode\IntelliJ IDEA Community Edition 2022.2.2\lib\idea_rt.jar=51863:D:\encode\IntelliJ IDEA Community Edition 2022.2.2\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\张\IdeaProjects\untitled\out\production\untitled Main
I LOVE YOU!I LOVE Y OU!I LOVE YOU!I LOV
E YOU!I LOVE YOU!I LOVE YOU!I LOV E YOU!I LOVE YOU!I LOVE YOU!I LOV
E YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE Y
OU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE
YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!
I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE
YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE
YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YO
U!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I
LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE Y
OU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I L
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LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I L
OVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!I LOVE YOU!
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Process finished with exit code 0
本文来自张素豪的博客，作者：Suhao314，转载请注明原文链接：https://www.cnblogs.com/zsuh/p/17145410.html
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