Share Share Code Shop Bán Đủ Loại Acc
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<DOCTYPE html>
<meta name="viewport" content="width=device-width, maximum-scale=1.0, initial-scale=1.0, user-scalable=no">
<title>I LOVE YOU</title>
</DOCTYPE>
<body>
<canvas id="canvas" width="1400" height="600"></canvas>
</body>
<script>var canvas=document.getElementById("canvas");canvas.width=window.innerWidth;canvas.height=window.innerHeight;var gl=canvas.getContext('webgl');if(!gl){console.error("Unable to initialize WebGL.")}
var time=0.0;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 = 1.3;
float radius = 0.008;
//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;
}
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)));
}
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 = 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 + points[i+1]) / 2.0;
dist = min(dist, sdBezier(pos, scale * c_prev, scale * points, 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(1.0,0.05,0.3);
//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(0.1,0.4,1.0);
//Tone mapping
col = 1.0 - exp(-col);
//Gamma
col = pow(col, vec3(0.4545));
//Output to screen
gl_FragColor = vec4(col,1.0);
}
`;window.addEventListener('resize',onWindowResize,!1);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)}
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}
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}
var vertexShader=compileShader(vertexSource,gl.VERTEX_SHADER);var fragmentShader=compileShader(fragmentSource,gl.FRAGMENT_SHADER);var program=gl.createProgram();gl.attachShader(program,vertexShader);gl.attachShader(program,fragmentShader);gl.linkProgram(program);gl.useProgram(program);var vertexData=new Float32Array([-1.0,1.0,-1.0,-1.0,1.0,1.0,1.0,-1.0,]);var vertexDataBuffer=gl.createBuffer();gl.bindBuffer(gl.ARRAY_BUFFER,vertexDataBuffer);gl.bufferData(gl.ARRAY_BUFFER,vertexData,gl.STATIC_DRAW);var positionHandle=getAttribLocation(program,'position');gl.enableVertexAttribArray(positionHandle);gl.vertexAttribPointer(positionHandle,2,gl.FLOAT,!1,2*4,0);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);var lastFrame=Date.now();var thisFrame;function draw(){thisFrame=Date.now();time+=(thisFrame-lastFrame)/1000;lastFrame=thisFrame;gl.uniform1f(timeHandle,time);gl.drawArrays(gl.TRIANGLE_STRIP,0,4);requestAnimationFrame(draw)}
draw()</script>
<style>body {
background-color: #000;
margin: 0;
overflow: hidden;
background-repeat: no-repeat;
}</style>
<meta name="viewport" content="width=device-width, maximum-scale=1.0, initial-scale=1.0, user-scalable=no">
<title>I LOVE YOU</title>
</DOCTYPE>
<body>
<canvas id="canvas" width="1400" height="600"></canvas>
</body>
<script>var canvas=document.getElementById("canvas");canvas.width=window.innerWidth;canvas.height=window.innerHeight;var gl=canvas.getContext('webgl');if(!gl){console.error("Unable to initialize WebGL.")}
var time=0.0;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 = 1.3;
float radius = 0.008;
//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;
}
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)));
}
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 = 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 + points[i+1]) / 2.0;
dist = min(dist, sdBezier(pos, scale * c_prev, scale * points, 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(1.0,0.05,0.3);
//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(0.1,0.4,1.0);
//Tone mapping
col = 1.0 - exp(-col);
//Gamma
col = pow(col, vec3(0.4545));
//Output to screen
gl_FragColor = vec4(col,1.0);
}
`;window.addEventListener('resize',onWindowResize,!1);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)}
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}
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}
var vertexShader=compileShader(vertexSource,gl.VERTEX_SHADER);var fragmentShader=compileShader(fragmentSource,gl.FRAGMENT_SHADER);var program=gl.createProgram();gl.attachShader(program,vertexShader);gl.attachShader(program,fragmentShader);gl.linkProgram(program);gl.useProgram(program);var vertexData=new Float32Array([-1.0,1.0,-1.0,-1.0,1.0,1.0,1.0,-1.0,]);var vertexDataBuffer=gl.createBuffer();gl.bindBuffer(gl.ARRAY_BUFFER,vertexDataBuffer);gl.bufferData(gl.ARRAY_BUFFER,vertexData,gl.STATIC_DRAW);var positionHandle=getAttribLocation(program,'position');gl.enableVertexAttribArray(positionHandle);gl.vertexAttribPointer(positionHandle,2,gl.FLOAT,!1,2*4,0);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);var lastFrame=Date.now();var thisFrame;function draw(){thisFrame=Date.now();time+=(thisFrame-lastFrame)/1000;lastFrame=thisFrame;gl.uniform1f(timeHandle,time);gl.drawArrays(gl.TRIANGLE_STRIP,0,4);requestAnimationFrame(draw)}
draw()</script>
<style>body {
background-color: #000;
margin: 0;
overflow: hidden;
background-repeat: no-repeat;
}</style>
...
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