Merge pull request #127 from Gazoon007/feat/grid-scan

Create <GridScan /> background
This commit is contained in:
David
2025-12-30 11:57:32 +02:00
committed by GitHub
7 changed files with 1204 additions and 1 deletions

73
package-lock.json generated
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@@ -15,6 +15,7 @@
"@vueuse/core": "^14.1.0",
"@vueuse/motion": "^3.0.3",
"@wdns/vue-code-block": "^2.3.5",
"face-api.js": "^0.22.2",
"gl-matrix": "^3.4.3",
"gsap": "^3.13.0",
"lenis": "^1.3.8",
@@ -4717,6 +4718,35 @@
"vite": "^5.2.0 || ^6 || ^7"
}
},
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"license": "Apache-2.0",
"dependencies": {
"@types/offscreencanvas": "~2019.3.0",
"@types/seedrandom": "2.4.27",
"@types/webgl-ext": "0.0.30",
"@types/webgl2": "0.0.4",
"node-fetch": "~2.1.2",
"seedrandom": "2.4.3"
},
"engines": {
"yarn": ">= 1.3.2"
}
},
"node_modules/@tensorflow/tfjs-core/node_modules/@types/offscreencanvas": {
"version": "2019.3.0",
"resolved": "https://registry.npmjs.org/@types/offscreencanvas/-/offscreencanvas-2019.3.0.tgz",
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"license": "MIT"
},
"node_modules/@tensorflow/tfjs-core/node_modules/seedrandom": {
"version": "2.4.3",
"resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-2.4.3.tgz",
"integrity": "sha512-2CkZ9Wn2dS4mMUWQaXLsOAfGD+irMlLEeSP3cMxpGbgyOOzJGFa+MWCOMTOCMyZinHRPxyOj/S/C57li/1to6Q==",
"license": "MIT"
},
"node_modules/@tresjs/cientos": {
"version": "4.3.1",
"resolved": "https://registry.npmjs.org/@tresjs/cientos/-/cientos-4.3.1.tgz",
@@ -4899,6 +4929,12 @@
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"license": "MIT"
},
"node_modules/@types/seedrandom": {
"version": "2.4.27",
"resolved": "https://registry.npmjs.org/@types/seedrandom/-/seedrandom-2.4.27.tgz",
"integrity": "sha512-YvMLqFak/7rt//lPBtEHv3M4sRNA+HGxrhFZ+DQs9K2IkYJbNwVIb8avtJfhDiuaUBX/AW0jnjv48FV8h3u9bQ==",
"license": "MIT"
},
"node_modules/@types/stats.js": {
"version": "0.17.4",
"resolved": "https://registry.npmjs.org/@types/stats.js/-/stats.js-0.17.4.tgz",
@@ -4926,6 +4962,18 @@
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"license": "MIT"
},
"node_modules/@types/webgl-ext": {
"version": "0.0.30",
"resolved": "https://registry.npmjs.org/@types/webgl-ext/-/webgl-ext-0.0.30.tgz",
"integrity": "sha512-LKVgNmBxN0BbljJrVUwkxwRYqzsAEPcZOe6S2T6ZaBDIrFp0qu4FNlpc5sM1tGbXUYFgdVQIoeLk1Y1UoblyEg==",
"license": "MIT"
},
"node_modules/@types/webgl2": {
"version": "0.0.4",
"resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.4.tgz",
"integrity": "sha512-PACt1xdErJbMUOUweSrbVM7gSIYm1vTncW2hF6Os/EeWi6TXYAYMPp+8v6rzHmypE5gHrxaxZNXgMkJVIdZpHw==",
"license": "MIT"
},
"node_modules/@types/webxr": {
"version": "0.5.23",
"resolved": "https://registry.npmjs.org/@types/webxr/-/webxr-0.5.23.tgz",
@@ -7821,6 +7869,22 @@
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"license": "MIT"
},
"node_modules/face-api.js": {
"version": "0.22.2",
"resolved": "https://registry.npmjs.org/face-api.js/-/face-api.js-0.22.2.tgz",
"integrity": "sha512-9Bbv/yaBRTKCXjiDqzryeKhYxmgSjJ7ukvOvEBy6krA0Ah/vNBlsf7iBNfJljWiPA8Tys1/MnB3lyP2Hfmsuyw==",
"license": "MIT",
"dependencies": {
"@tensorflow/tfjs-core": "1.7.0",
"tslib": "^1.11.1"
}
},
"node_modules/face-api.js/node_modules/tslib": {
"version": "1.14.1",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
"integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
"license": "0BSD"
},
"node_modules/fast-deep-equal": {
"version": "3.1.3",
"resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -10009,6 +10073,15 @@
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"license": "MIT"
},
"node_modules/node-fetch": {
"version": "2.1.2",
"resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
"integrity": "sha512-IHLHYskTc2arMYsHZH82PVX8CSKT5lzb7AXeyO06QnjGDKtkv+pv3mEki6S7reB/x1QPo+YPxQRNEVgR5V/w3Q==",
"license": "MIT",
"engines": {
"node": "4.x || >=6.0.0"
}
},
"node_modules/node-fetch-native": {
"version": "1.6.7",
"resolved": "https://registry.npmjs.org/node-fetch-native/-/node-fetch-native-1.6.7.tgz",

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@@ -23,6 +23,7 @@
"@vueuse/core": "^14.1.0",
"@vueuse/motion": "^3.0.3",
"@wdns/vue-code-block": "^2.3.5",
"face-api.js": "^0.22.2",
"gl-matrix": "^3.4.3",
"gsap": "^3.13.0",
"lenis": "^1.3.8",

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@@ -1,5 +1,5 @@
// Highlighted sidebar items
export const NEW = ['Antigravity', 'Color Bends', 'Ghost Cursor', 'Laser Flow', 'Liquid Ether', 'Pixel Blast', 'Floating Lines', 'Light Pillar', 'Pixel Snow'];
export const NEW = ['Antigravity', 'Color Bends', 'Ghost Cursor', 'Laser Flow', 'Liquid Ether', 'Pixel Blast', 'Floating Lines', 'Light Pillar', 'Pixel Snow', 'Grid Scan'];
export const UPDATED = [];
// Used for main sidebar navigation
@@ -124,6 +124,7 @@ export const CATEGORIES = [
'Gradient Blinds',
'Grid Distortion',
'Grid Motion',
'Grid Scan',
'Hyperspeed',
'Iridescence',
'Letter Glitch',

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@@ -126,6 +126,7 @@ const backgrounds = {
'floating-lines': () => import('../demo/Backgrounds/FloatingLinesDemo.vue'),
'light-pillar': () => import('../demo/Backgrounds/LightPillarDemo.vue'),
'pixel-snow': () => import('../demo/Backgrounds/PixelSnowDemo.vue'),
'grid-scan': () => import('../demo/Backgrounds/GridScanDemo.vue'),
};
export const componentMap = {

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@@ -0,0 +1,28 @@
import code from '@content/Backgrounds/GridScan/GridScan.vue?raw';
import { createCodeObject } from '@/types/code';
export const gridScan = createCodeObject(code, 'Backgrounds/GridScan', {
installation: `npm install three postprocessing face-api.js`,
usage: `<template>
<div class="w-full h-[600px] relative">
<GridScan
:line-thickness="1"
:grid-scale="0.1"
:line-jitter="0.1"
lines-color="#392e4e"
scan-color="#FF9FFC"
:enable-post="true"
:chromatic-aberration="0.002"
:noise-intensity="0.01"
:scan-glow="0.5"
:scan-softness="2"
:enable-webcam="false"
:show-preview="false"
/>
</div>
</template>
<script setup lang="ts">
import GridScan from "./GridScan.vue";
</script>`
});

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@@ -0,0 +1,923 @@
<template>
<div
ref="containerRef"
:class="['relative w-full h-full overflow-hidden', className]"
:style="style"
>
<div
v-if="showPreview"
class="absolute right-3 bottom-3 w-[220px] h-[132px] rounded-lg overflow-hidden border border-white/25 shadow-[0_4px_16px_rgba(0,0,0,0.4)] bg-black text-white text-[12px] leading-[1.2] font-sans pointer-events-none"
>
<video
ref="videoRef"
muted
playsinline
autoplay
class="w-full h-full object-cover -scale-x-100"
/>
<div class="absolute left-2 top-2 px-[6px] py-[2px] bg-black/50 rounded-[6px] backdrop-blur-[4px]">
{{
enableWebcam
? modelsReady
? uiFaceActive
? 'Face: tracking'
: 'Face: searching'
: 'Loading models'
: 'Webcam disabled'
}}
</div>
</div>
</div>
</template>
<script setup lang="ts">
import { ref, onMounted, onUnmounted, watch, useTemplateRef, type CSSProperties } from 'vue';
import { EffectComposer, RenderPass, EffectPass, BloomEffect, ChromaticAberrationEffect } from 'postprocessing';
import * as THREE from 'three';
import * as faceapi from 'face-api.js';
export type LineStyle = 'solid' | 'dashed' | 'dotted';
export type ScanDirection = 'forward' | 'backward' | 'pingpong';
interface GridScanProps {
enableWebcam?: boolean;
showPreview?: boolean;
modelsPath?: string;
sensitivity?: number;
lineThickness?: number;
linesColor?: string;
gridScale?: number;
lineStyle?: LineStyle;
lineJitter?: number;
enablePost?: boolean;
bloomIntensity?: number;
bloomThreshold?: number;
bloomSmoothing?: number;
chromaticAberration?: number;
noiseIntensity?: number;
scanColor?: string;
scanOpacity?: number;
scanDirection?: ScanDirection;
scanSoftness?: number;
scanGlow?: number;
scanPhaseTaper?: number;
scanDuration?: number;
scanDelay?: number;
enableGyro?: boolean;
scanOnClick?: boolean;
snapBackDelay?: number;
className?: string;
style?: CSSProperties;
}
const props = withDefaults(defineProps<GridScanProps>(), {
enableWebcam: false,
showPreview: false,
modelsPath: 'https://cdn.jsdelivr.net/gh/justadudewhohacks/face-api.js@0.22.2/weights',
sensitivity: 0.55,
lineThickness: 1,
linesColor: '#392e4e',
scanColor: '#FF9FFC',
scanOpacity: 0.4,
gridScale: 0.1,
lineStyle: 'solid',
lineJitter: 0.1,
scanDirection: 'pingpong',
enablePost: true,
bloomIntensity: 0,
bloomThreshold: 0,
bloomSmoothing: 0,
chromaticAberration: 0.002,
noiseIntensity: 0.01,
scanGlow: 0.5,
scanSoftness: 2,
scanPhaseTaper: 0.9,
scanDuration: 2.0,
scanDelay: 2.0,
enableGyro: false,
scanOnClick: false,
snapBackDelay: 250,
className: ''
});
const vert = `
varying vec2 vUv;
void main(){
vUv = uv;
gl_Position = vec4(position.xy, 0.0, 1.0);
}
`;
const frag = `
precision highp float;
uniform vec3 iResolution;
uniform float iTime;
uniform vec2 uSkew;
uniform float uTilt;
uniform float uYaw;
uniform float uLineThickness;
uniform vec3 uLinesColor;
uniform vec3 uScanColor;
uniform float uGridScale;
uniform float uLineStyle;
uniform float uLineJitter;
uniform float uScanOpacity;
uniform float uScanDirection;
uniform float uNoise;
uniform float uBloomOpacity;
uniform float uScanGlow;
uniform float uScanSoftness;
uniform float uPhaseTaper;
uniform float uScanDuration;
uniform float uScanDelay;
varying vec2 vUv;
uniform float uScanStarts[8];
uniform float uScanCount;
const int MAX_SCANS = 8;
float smoother01(float a, float b, float x){
float t = clamp((x - a) / max(1e-5, (b - a)), 0.0, 1.0);
return t * t * t * (t * (t * 6.0 - 15.0) + 10.0);
}
void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
vec2 p = (2.0 * fragCoord - iResolution.xy) / iResolution.y;
vec3 ro = vec3(0.0);
vec3 rd = normalize(vec3(p, 2.0));
float cR = cos(uTilt), sR = sin(uTilt);
rd.xy = mat2(cR, -sR, sR, cR) * rd.xy;
float cY = cos(uYaw), sY = sin(uYaw);
rd.xz = mat2(cY, -sY, sY, cY) * rd.xz;
vec2 skew = clamp(uSkew, vec2(-0.7), vec2(0.7));
rd.xy += skew * rd.z;
vec3 color = vec3(0.0);
float minT = 1e20;
float gridScale = max(1e-5, uGridScale);
float fadeStrength = 2.0;
vec2 gridUV = vec2(0.0);
float hitIsY = 1.0;
for (int i = 0; i < 4; i++)
{
float isY = float(i < 2);
float pos = mix(-0.2, 0.2, float(i)) * isY + mix(-0.5, 0.5, float(i - 2)) * (1.0 - isY);
float num = pos - (isY * ro.y + (1.0 - isY) * ro.x);
float den = isY * rd.y + (1.0 - isY) * rd.x;
float t = num / den;
vec3 h = ro + rd * t;
float depthBoost = smoothstep(0.0, 3.0, h.z);
h.xy += skew * 0.15 * depthBoost;
bool use = t > 0.0 && t < minT;
gridUV = use ? mix(h.zy, h.xz, isY) / gridScale : gridUV;
minT = use ? t : minT;
hitIsY = use ? isY : hitIsY;
}
vec3 hit = ro + rd * minT;
float dist = length(hit - ro);
float jitterAmt = clamp(uLineJitter, 0.0, 1.0);
if (jitterAmt > 0.0) {
vec2 j = vec2(
sin(gridUV.y * 2.7 + iTime * 1.8),
cos(gridUV.x * 2.3 - iTime * 1.6)
) * (0.15 * jitterAmt);
gridUV += j;
}
float fx = fract(gridUV.x);
float fy = fract(gridUV.y);
float ax = min(fx, 1.0 - fx);
float ay = min(fy, 1.0 - fy);
float wx = fwidth(gridUV.x);
float wy = fwidth(gridUV.y);
float halfPx = max(0.0, uLineThickness) * 0.5;
float tx = halfPx * wx;
float ty = halfPx * wy;
float aax = wx;
float aay = wy;
float lineX = 1.0 - smoothstep(tx, tx + aax, ax);
float lineY = 1.0 - smoothstep(ty, ty + aay, ay);
if (uLineStyle > 0.5) {
float dashRepeat = 4.0;
float dashDuty = 0.5;
float vy = fract(gridUV.y * dashRepeat);
float vx = fract(gridUV.x * dashRepeat);
float dashMaskY = step(vy, dashDuty);
float dashMaskX = step(vx, dashDuty);
if (uLineStyle < 1.5) {
lineX *= dashMaskY;
lineY *= dashMaskX;
} else {
float dotRepeat = 6.0;
float dotWidth = 0.18;
float cy = abs(fract(gridUV.y * dotRepeat) - 0.5);
float cx = abs(fract(gridUV.x * dotRepeat) - 0.5);
float dotMaskY = 1.0 - smoothstep(dotWidth, dotWidth + fwidth(gridUV.y * dotRepeat), cy);
float dotMaskX = 1.0 - smoothstep(dotWidth, dotWidth + fwidth(gridUV.x * dotRepeat), cx);
lineX *= dotMaskY;
lineY *= dotMaskX;
}
}
float primaryMask = max(lineX, lineY);
vec2 gridUV2 = (hitIsY > 0.5 ? hit.xz : hit.zy) / gridScale;
if (jitterAmt > 0.0) {
vec2 j2 = vec2(
cos(gridUV2.y * 2.1 - iTime * 1.4),
sin(gridUV2.x * 2.5 + iTime * 1.7)
) * (0.15 * jitterAmt);
gridUV2 += j2;
}
float fx2 = fract(gridUV2.x);
float fy2 = fract(gridUV2.y);
float ax2 = min(fx2, 1.0 - fx2);
float ay2 = min(fy2, 1.0 - fy2);
float wx2 = fwidth(gridUV2.x);
float wy2 = fwidth(gridUV2.y);
float tx2 = halfPx * wx2;
float ty2 = halfPx * wy2;
float aax2 = wx2;
float aay2 = wy2;
float lineX2 = 1.0 - smoothstep(tx2, tx2 + aax2, ax2);
float lineY2 = 1.0 - smoothstep(ty2, ty2 + aay2, ay2);
if (uLineStyle > 0.5) {
float dashRepeat2 = 4.0;
float dashDuty2 = 0.5;
float vy2m = fract(gridUV2.y * dashRepeat2);
float vx2m = fract(gridUV2.x * dashRepeat2);
float dashMaskY2 = step(vy2m, dashDuty2);
float dashMaskX2 = step(vx2m, dashDuty2);
if (uLineStyle < 1.5) {
lineX2 *= dashMaskY2;
lineY2 *= dashMaskX2;
} else {
float dotRepeat2 = 6.0;
float dotWidth2 = 0.18;
float cy2 = abs(fract(gridUV2.y * dotRepeat2) - 0.5);
float cx2 = abs(fract(gridUV2.x * dotRepeat2) - 0.5);
float dotMaskY2 = 1.0 - smoothstep(dotWidth2, dotWidth2 + fwidth(gridUV2.y * dotRepeat2), cy2);
float dotMaskX2 = 1.0 - smoothstep(dotWidth2, dotWidth2 + fwidth(gridUV2.x * dotRepeat2), cx2);
lineX2 *= dotMaskY2;
lineY2 *= dotMaskX2;
}
}
float altMask = max(lineX2, lineY2);
float edgeDistX = min(abs(hit.x - (-0.5)), abs(hit.x - 0.5));
float edgeDistY = min(abs(hit.y - (-0.2)), abs(hit.y - 0.2));
float edgeDist = mix(edgeDistY, edgeDistX, hitIsY);
float edgeGate = 1.0 - smoothstep(gridScale * 0.5, gridScale * 2.0, edgeDist);
altMask *= edgeGate;
float lineMask = max(primaryMask, altMask);
float fade = exp(-dist * fadeStrength);
float dur = max(0.05, uScanDuration);
float del = max(0.0, uScanDelay);
float scanZMax = 2.0;
float widthScale = max(0.1, uScanGlow);
float sigma = max(0.001, 0.18 * widthScale * uScanSoftness);
float sigmaA = sigma * 2.0;
float combinedPulse = 0.0;
float combinedAura = 0.0;
float cycle = dur + del;
float tCycle = mod(iTime, cycle);
float scanPhase = clamp((tCycle - del) / dur, 0.0, 1.0);
float phase = scanPhase;
if (uScanDirection > 0.5 && uScanDirection < 1.5) {
phase = 1.0 - phase;
} else if (uScanDirection > 1.5) {
float t2 = mod(max(0.0, iTime - del), 2.0 * dur);
phase = (t2 < dur) ? (t2 / dur) : (1.0 - (t2 - dur) / dur);
}
float scanZ = phase * scanZMax;
float dz = abs(hit.z - scanZ);
float lineBand = exp(-0.5 * (dz * dz) / (sigma * sigma));
float taper = clamp(uPhaseTaper, 0.0, 0.49);
float headW = taper;
float tailW = taper;
float headFade = smoother01(0.0, headW, phase);
float tailFade = 1.0 - smoother01(1.0 - tailW, 1.0, phase);
float phaseWindow = headFade * tailFade;
float pulseBase = lineBand * phaseWindow;
combinedPulse += pulseBase * clamp(uScanOpacity, 0.0, 1.0);
float auraBand = exp(-0.5 * (dz * dz) / (sigmaA * sigmaA));
combinedAura += (auraBand * 0.25) * phaseWindow * clamp(uScanOpacity, 0.0, 1.0);
for (int i = 0; i < MAX_SCANS; i++) {
if (float(i) >= uScanCount) break;
float tActiveI = iTime - uScanStarts[i];
float phaseI = clamp(tActiveI / dur, 0.0, 1.0);
if (uScanDirection > 0.5 && uScanDirection < 1.5) {
phaseI = 1.0 - phaseI;
} else if (uScanDirection > 1.5) {
phaseI = (phaseI < 0.5) ? (phaseI * 2.0) : (1.0 - (phaseI - 0.5) * 2.0);
}
float scanZI = phaseI * scanZMax;
float dzI = abs(hit.z - scanZI);
float lineBandI = exp(-0.5 * (dzI * dzI) / (sigma * sigma));
float headFadeI = smoother01(0.0, headW, phaseI);
float tailFadeI = 1.0 - smoother01(1.0 - tailW, 1.0, phaseI);
float phaseWindowI = headFadeI * tailFadeI;
combinedPulse += lineBandI * phaseWindowI * clamp(uScanOpacity, 0.0, 1.0);
float auraBandI = exp(-0.5 * (dzI * dzI) / (sigmaA * sigmaA));
combinedAura += (auraBandI * 0.25) * phaseWindowI * clamp(uScanOpacity, 0.0, 1.0);
}
float lineVis = lineMask;
vec3 gridCol = uLinesColor * lineVis * fade;
vec3 scanCol = uScanColor * combinedPulse;
vec3 scanAura = uScanColor * combinedAura;
color = gridCol + scanCol + scanAura;
float n = fract(sin(dot(gl_FragCoord.xy + vec2(iTime * 123.4), vec2(12.9898,78.233))) * 43758.5453123);
color += (n - 0.5) * uNoise;
color = clamp(color, 0.0, 1.0);
float alpha = clamp(max(lineVis, combinedPulse), 0.0, 1.0);
float gx = 1.0 - smoothstep(tx * 2.0, tx * 2.0 + aax * 2.0, ax);
float gy = 1.0 - smoothstep(ty * 2.0, ty * 2.0 + aay * 2.0, ay);
float halo = max(gx, gy) * fade;
alpha = max(alpha, halo * clamp(uBloomOpacity, 0.0, 1.0));
fragColor = vec4(color, alpha);
}
void main(){
vec4 c;
mainImage(c, vUv * iResolution.xy);
gl_FragColor = c;
}
`;
const containerRef = useTemplateRef<HTMLDivElement>('containerRef');
const videoRef = useTemplateRef<HTMLVideoElement>('videoRef');
const modelsReady = ref(false);
const uiFaceActive = ref(false);
const MAX_SCANS = 8;
let cleanupAnimation: () => void = () => {};
const srgbColor = (hex: string): THREE.Color => {
const c = new THREE.Color(hex);
return c.convertSRGBToLinear();
};
const smoothDampVec2 = (
current: THREE.Vector2,
target: THREE.Vector2,
currentVelocity: THREE.Vector2,
smoothTimeVal: number,
maxSpeedVal: number,
deltaTime: number
): THREE.Vector2 => {
const out = current.clone();
smoothTimeVal = Math.max(0.0001, smoothTimeVal);
const omega = 2 / smoothTimeVal;
const x = omega * deltaTime;
const exp = 1 / (1 + x + 0.48 * x * x + 0.235 * x * x * x);
let change = current.clone().sub(target);
const originalTo = target.clone();
const maxChange = maxSpeedVal * smoothTimeVal;
if (change.length() > maxChange) change.setLength(maxChange);
target = current.clone().sub(change);
const temp = currentVelocity.clone().addScaledVector(change, omega).multiplyScalar(deltaTime);
currentVelocity.sub(temp.clone().multiplyScalar(omega));
currentVelocity.multiplyScalar(exp);
out.copy(target.clone().add(change.add(temp).multiplyScalar(exp)));
const origMinusCurrent = originalTo.clone().sub(current);
const outMinusOrig = out.clone().sub(originalTo);
if (origMinusCurrent.dot(outMinusOrig) > 0) {
out.copy(originalTo);
currentVelocity.set(0, 0);
}
return out;
};
const smoothDampFloat = (
current: number,
target: number,
velRef: { v: number },
smoothTimeVal: number,
maxSpeedVal: number,
deltaTime: number
): { value: number; v: number } => {
smoothTimeVal = Math.max(0.0001, smoothTimeVal);
const omega = 2 / smoothTimeVal;
const x = omega * deltaTime;
const exp = 1 / (1 + x + 0.48 * x * x + 0.235 * x * x * x);
let change = current - target;
const originalTo = target;
const maxChange = maxSpeedVal * smoothTimeVal;
change = Math.sign(change) * Math.min(Math.abs(change), maxChange);
target = current - change;
const temp = (velRef.v + omega * change) * deltaTime;
velRef.v = (velRef.v - omega * temp) * exp;
let out = target + (change + temp) * exp;
const origMinusCurrent = originalTo - current;
const outMinusOrig = out - originalTo;
if (origMinusCurrent * outMinusOrig > 0) {
out = originalTo;
velRef.v = 0;
}
return { value: out, v: velRef.v };
};
const medianPush = (buf: number[], v: number, maxLen: number): void => {
buf.push(v);
if (buf.length > maxLen) buf.shift();
};
const median = (buf: number[]): number => {
if (buf.length === 0) return 0;
const a = [...buf].sort((x, y) => x - y);
const mid = Math.floor(a.length / 2);
return a.length % 2 ? a[mid] : (a[mid - 1] + a[mid]) * 0.5;
};
const centroid = (points: { x: number; y: number }[]): { x: number; y: number } => {
let x = 0,
y = 0;
const n = points.length || 1;
for (const p of points) {
x += p.x;
y += p.y;
}
return { x: x / n, y: y / n };
};
const dist2 = (a: { x: number; y: number }, b: { x: number; y: number }): number => {
return Math.hypot(a.x - b.x, a.y - b.y);
};
const setupAnimation = () => {
const container = containerRef.value;
if (!container) return;
// Non-reactive Three.js objects - stored as plain variables
const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
renderer.setSize(container.clientWidth, container.clientHeight);
renderer.outputColorSpace = THREE.SRGBColorSpace;
renderer.toneMapping = THREE.NoToneMapping;
renderer.autoClear = false;
renderer.setClearColor(0x000000, 0);
container.appendChild(renderer.domElement);
const scene = new THREE.Scene();
const camera = new THREE.OrthographicCamera(-1, 1, 1, -1, 0, 1);
// Animation state - plain objects, not reactive
const lookTarget = new THREE.Vector2(0, 0);
const lookCurrent = new THREE.Vector2(0, 0);
const lookVel = new THREE.Vector2(0, 0);
let tiltTarget = 0;
let tiltCurrent = 0;
let tiltVel = 0;
let yawTarget = 0;
let yawCurrent = 0;
let yawVel = 0;
const scanStarts: number[] = [];
const bufX: number[] = [];
const bufY: number[] = [];
const bufT: number[] = [];
const bufYaw: number[] = [];
let leaveTimer: number | null = null;
const uniforms = {
iResolution: {
value: new THREE.Vector3(container.clientWidth, container.clientHeight, renderer.getPixelRatio())
},
iTime: { value: 0 },
uSkew: { value: new THREE.Vector2(0, 0) },
uTilt: { value: 0 },
uYaw: { value: 0 },
uLineThickness: { value: props.lineThickness },
uLinesColor: { value: srgbColor(props.linesColor) },
uScanColor: { value: srgbColor(props.scanColor) },
uGridScale: { value: props.gridScale },
uLineStyle: { value: props.lineStyle === 'dashed' ? 1 : props.lineStyle === 'dotted' ? 2 : 0 },
uLineJitter: { value: Math.max(0, Math.min(1, props.lineJitter || 0)) },
uScanOpacity: { value: props.scanOpacity },
uNoise: { value: props.noiseIntensity },
uBloomOpacity: { value: props.bloomIntensity },
uScanGlow: { value: props.scanGlow },
uScanSoftness: { value: props.scanSoftness },
uPhaseTaper: { value: props.scanPhaseTaper },
uScanDuration: { value: props.scanDuration },
uScanDelay: { value: props.scanDelay },
uScanDirection: { value: props.scanDirection === 'backward' ? 1 : props.scanDirection === 'pingpong' ? 2 : 0 },
uScanStarts: { value: new Array(MAX_SCANS).fill(0) },
uScanCount: { value: 0 }
};
const material = new THREE.ShaderMaterial({
uniforms,
vertexShader: vert,
fragmentShader: frag,
transparent: true,
depthWrite: false,
depthTest: false
});
const geometry = new THREE.PlaneGeometry(2, 2);
const quad = new THREE.Mesh(geometry, material);
scene.add(quad);
let composer: EffectComposer | null = null;
let bloom: BloomEffect | null = null;
let chroma: ChromaticAberrationEffect | null = null;
if (props.enablePost) {
composer = new EffectComposer(renderer);
const renderPass = new RenderPass(scene, camera);
composer.addPass(renderPass);
bloom = new BloomEffect({
intensity: 1.0,
luminanceThreshold: props.bloomThreshold,
luminanceSmoothing: props.bloomSmoothing
});
bloom.blendMode.opacity.value = Math.max(0, props.bloomIntensity);
chroma = new ChromaticAberrationEffect({
offset: new THREE.Vector2(props.chromaticAberration, props.chromaticAberration),
radialModulation: true,
modulationOffset: 0.0
});
const effectPass = new EffectPass(camera, bloom, chroma);
effectPass.renderToScreen = true;
composer.addPass(effectPass);
}
const pushScan = (t: number): void => {
if (scanStarts.length >= MAX_SCANS) scanStarts.shift();
scanStarts.push(t);
const buf = new Array(MAX_SCANS).fill(0);
for (let i = 0; i < scanStarts.length && i < MAX_SCANS; i++) buf[i] = scanStarts[i];
uniforms.uScanStarts.value = buf;
uniforms.uScanCount.value = scanStarts.length;
};
const onMouseMove = (e: MouseEvent): void => {
if (uiFaceActive.value) return;
if (leaveTimer) {
clearTimeout(leaveTimer);
leaveTimer = null;
}
const rect = container.getBoundingClientRect();
const nx = ((e.clientX - rect.left) / rect.width) * 2 - 1;
const ny = -(((e.clientY - rect.top) / rect.height) * 2 - 1);
lookTarget.set(nx, ny);
};
const onClick = async (): Promise<void> => {
const nowSec = performance.now() / 1000;
if (props.scanOnClick) pushScan(nowSec);
if (
props.enableGyro &&
typeof window !== 'undefined' &&
(window as any).DeviceOrientationEvent &&
(DeviceOrientationEvent as any).requestPermission
) {
try {
await (DeviceOrientationEvent as any).requestPermission();
} catch {}
}
};
const onMouseEnter = (): void => {
if (leaveTimer) {
clearTimeout(leaveTimer);
leaveTimer = null;
}
};
const onMouseLeave = (): void => {
if (uiFaceActive.value) return;
if (leaveTimer) clearTimeout(leaveTimer);
leaveTimer = window.setTimeout(
() => {
lookTarget.set(0, 0);
tiltTarget = 0;
yawTarget = 0;
},
Math.max(0, props.snapBackDelay || 0)
);
};
const onDeviceOrientation = (e: DeviceOrientationEvent): void => {
if (uiFaceActive.value) return;
const gamma = e.gamma ?? 0;
const beta = e.beta ?? 0;
const nx = THREE.MathUtils.clamp(gamma / 45, -1, 1);
const ny = THREE.MathUtils.clamp(-beta / 30, -1, 1);
lookTarget.set(nx, ny);
tiltTarget = THREE.MathUtils.degToRad(gamma) * 0.4;
};
const onResize = (): void => {
renderer.setSize(container.clientWidth, container.clientHeight);
uniforms.iResolution.value.set(container.clientWidth, container.clientHeight, renderer.getPixelRatio());
if (composer) composer.setSize(container.clientWidth, container.clientHeight);
};
container.addEventListener('mousemove', onMouseMove);
container.addEventListener('mouseenter', onMouseEnter);
container.addEventListener('mouseleave', onMouseLeave);
if (props.scanOnClick) container.addEventListener('click', onClick);
if (props.enableGyro) window.addEventListener('deviceorientation', onDeviceOrientation);
window.addEventListener('resize', onResize);
// Face detection
let stopFaceDetection = false;
let lastDetect = 0;
const startFaceDetection = async (): Promise<void> => {
if (!props.enableWebcam || !modelsReady.value) return;
const video = videoRef.value;
if (!video) return;
try {
const stream = await navigator.mediaDevices.getUserMedia({
video: { facingMode: 'user', width: { ideal: 1280 }, height: { ideal: 720 } },
audio: false
});
video.srcObject = stream;
await video.play();
} catch {
return;
}
const opts = new faceapi.TinyFaceDetectorOptions({ inputSize: 320, scoreThreshold: 0.5 });
const s = THREE.MathUtils.clamp(props.sensitivity, 0, 1);
const depthResponse = THREE.MathUtils.lerp(0.25, 0.45, s);
const detect = async (ts: number): Promise<void> => {
if (stopFaceDetection) return;
if (ts - lastDetect >= 33) {
lastDetect = ts;
try {
const res = await faceapi.detectSingleFace(video, opts).withFaceLandmarks(true);
if (res && res.detection) {
const det = res.detection;
const box = det.box;
const vw = video.videoWidth || 1;
const vh = video.videoHeight || 1;
const cx = box.x + box.width * 0.5;
const cy = box.y + box.height * 0.5;
const nx = (cx / vw) * 2 - 1;
const ny = (cy / vh) * 2 - 1;
medianPush(bufX, nx, 5);
medianPush(bufY, ny, 5);
const nxm = median(bufX);
const nym = median(bufY);
const look = new THREE.Vector2(Math.tanh(nxm), Math.tanh(nym));
const faceSize = Math.min(1, Math.hypot(box.width / vw, box.height / vh));
const depthScaleVal = 1 + depthResponse * (faceSize - 0.25);
lookTarget.copy(look.multiplyScalar(depthScaleVal));
const leftEye = res.landmarks.getLeftEye();
const rightEye = res.landmarks.getRightEye();
const lc = centroid(leftEye);
const rc = centroid(rightEye);
const tilt = Math.atan2(rc.y - lc.y, rc.x - lc.x);
medianPush(bufT, tilt, 5);
tiltTarget = median(bufT);
const nose = res.landmarks.getNose();
const tip = nose[nose.length - 1] || nose[Math.floor(nose.length / 2)];
const jaw = res.landmarks.getJawOutline();
const leftCheek = jaw[3] || jaw[2];
const rightCheek = jaw[13] || jaw[14];
const dL = dist2(tip, leftCheek);
const dR = dist2(tip, rightCheek);
const eyeDist = Math.hypot(rc.x - lc.x, rc.y - lc.y) + 1e-6;
let yawSignal = THREE.MathUtils.clamp((dR - dL) / (eyeDist * 1.6), -1, 1);
yawSignal = Math.tanh(yawSignal);
medianPush(bufYaw, yawSignal, 5);
yawTarget = median(bufYaw);
uiFaceActive.value = true;
} else {
uiFaceActive.value = false;
}
} catch {
uiFaceActive.value = false;
}
}
if ('requestVideoFrameCallback' in HTMLVideoElement.prototype) {
(video as any).requestVideoFrameCallback(() => detect(performance.now()));
} else {
requestAnimationFrame(detect);
}
};
requestAnimationFrame(detect);
};
const stopWebcam = (): void => {
stopFaceDetection = true;
const video = videoRef.value;
if (video) {
const stream = video.srcObject as MediaStream | null;
if (stream) stream.getTracks().forEach(t => t.stop());
video.pause();
video.srcObject = null;
}
};
// Watch for webcam changes
const unwatchWebcam = watch(
() => props.enableWebcam,
(newVal) => {
if (newVal && modelsReady.value) {
stopFaceDetection = false;
startFaceDetection();
} else {
stopWebcam();
}
}
);
const unwatchModels = watch(modelsReady, (ready) => {
if (ready && props.enableWebcam) {
stopFaceDetection = false;
startFaceDetection();
}
});
// Watch for prop changes
const unwatchProps = watch(
[
() => props.lineThickness,
() => props.linesColor,
() => props.scanColor,
() => props.gridScale,
() => props.lineStyle,
() => props.lineJitter,
() => props.bloomIntensity,
() => props.bloomThreshold,
() => props.bloomSmoothing,
() => props.chromaticAberration,
() => props.noiseIntensity,
() => props.scanGlow,
() => props.scanOpacity,
() => props.scanDirection,
() => props.scanSoftness,
() => props.scanPhaseTaper,
() => props.scanDuration,
() => props.scanDelay
],
() => {
uniforms.uLineThickness.value = props.lineThickness;
(uniforms.uLinesColor.value as THREE.Color).copy(srgbColor(props.linesColor));
(uniforms.uScanColor.value as THREE.Color).copy(srgbColor(props.scanColor));
uniforms.uGridScale.value = props.gridScale;
uniforms.uLineStyle.value = props.lineStyle === 'dashed' ? 1 : props.lineStyle === 'dotted' ? 2 : 0;
uniforms.uLineJitter.value = Math.max(0, Math.min(1, props.lineJitter || 0));
uniforms.uBloomOpacity.value = Math.max(0, props.bloomIntensity);
uniforms.uNoise.value = Math.max(0, props.noiseIntensity);
uniforms.uScanGlow.value = props.scanGlow;
uniforms.uScanOpacity.value = Math.max(0, Math.min(1, props.scanOpacity));
uniforms.uScanDirection.value = props.scanDirection === 'backward' ? 1 : props.scanDirection === 'pingpong' ? 2 : 0;
uniforms.uScanSoftness.value = props.scanSoftness;
uniforms.uPhaseTaper.value = props.scanPhaseTaper;
uniforms.uScanDuration.value = Math.max(0.05, props.scanDuration);
uniforms.uScanDelay.value = Math.max(0.0, props.scanDelay);
if (bloom) {
bloom.blendMode.opacity.value = Math.max(0, props.bloomIntensity);
(bloom as any).luminanceMaterial.threshold = props.bloomThreshold;
(bloom as any).luminanceMaterial.smoothing = props.bloomSmoothing;
}
if (chroma) {
chroma.offset.set(props.chromaticAberration, props.chromaticAberration);
}
}
);
// Animation loop
let rafId: number | null = null;
let last = performance.now();
const tick = (): void => {
const now = performance.now();
const dt = Math.max(0, Math.min(0.1, (now - last) / 1000));
last = now;
const s = THREE.MathUtils.clamp(props.sensitivity, 0, 1);
const skewScale = THREE.MathUtils.lerp(0.06, 0.2, s);
const tiltScale = THREE.MathUtils.lerp(0.12, 0.3, s);
const yawScale = THREE.MathUtils.lerp(0.1, 0.28, s);
const smoothTime = THREE.MathUtils.lerp(0.45, 0.12, s);
const yBoost = THREE.MathUtils.lerp(1.2, 1.6, s);
const maxSpeed = Infinity;
lookCurrent.copy(smoothDampVec2(lookCurrent, lookTarget, lookVel, smoothTime, maxSpeed, dt));
const tiltSm = smoothDampFloat(tiltCurrent, tiltTarget, { v: tiltVel }, smoothTime, maxSpeed, dt);
tiltCurrent = tiltSm.value;
tiltVel = tiltSm.v;
const yawSm = smoothDampFloat(yawCurrent, yawTarget, { v: yawVel }, smoothTime, maxSpeed, dt);
yawCurrent = yawSm.value;
yawVel = yawSm.v;
uniforms.uSkew.value.set(lookCurrent.x * skewScale, -lookCurrent.y * yBoost * skewScale);
uniforms.uTilt.value = tiltCurrent * tiltScale;
uniforms.uYaw.value = THREE.MathUtils.clamp(yawCurrent * yawScale, -0.6, 0.6);
uniforms.iTime.value = now / 1000;
renderer.clear(true, true, true);
if (composer) {
composer.render(dt);
} else {
renderer.render(scene, camera);
}
rafId = requestAnimationFrame(tick);
};
rafId = requestAnimationFrame(tick);
cleanupAnimation = () => {
if (rafId) cancelAnimationFrame(rafId);
if (leaveTimer) clearTimeout(leaveTimer);
container.removeEventListener('mousemove', onMouseMove);
container.removeEventListener('mouseenter', onMouseEnter);
container.removeEventListener('mouseleave', onMouseLeave);
container.removeEventListener('click', onClick);
window.removeEventListener('deviceorientation', onDeviceOrientation);
window.removeEventListener('resize', onResize);
unwatchWebcam();
unwatchModels();
unwatchProps();
stopWebcam();
material.dispose();
geometry.dispose();
if (composer) composer.dispose();
renderer.dispose();
if (container.contains(renderer.domElement)) {
container.removeChild(renderer.domElement);
}
};
};
const loadFaceModels = async (): Promise<void> => {
try {
await Promise.all([
faceapi.nets.tinyFaceDetector.loadFromUri(props.modelsPath),
faceapi.nets.faceLandmark68TinyNet.loadFromUri(props.modelsPath)
]);
modelsReady.value = true;
} catch {
modelsReady.value = false;
}
};
onMounted(() => {
setupAnimation();
loadFaceModels();
});
onUnmounted(() => {
cleanupAnimation();
});
</script>

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<template>
<TabbedLayout>
<template #preview>
<div class="h-[600px] overflow-hidden demo-container relative">
<GridScan
:line-thickness="lineThickness"
:grid-scale="gridScale"
:line-jitter="lineJitter"
:lines-color="linesColor"
:scan-color="scanColor"
:enable-post="enablePost"
:chromatic-aberration="chromaticAberration"
:noise-intensity="noiseIntensity"
:scan-glow="scanGlow"
:scan-softness="scanSoftness"
:enable-webcam="enableWebcam"
:show-preview="showPreview"
/>
<BackgroundContent pill-text="New Background" headline="Hold on, scanning for Angular users." />
</div>
<Customize>
<PreviewColor title="Lines Color" v-model="linesColor" class="mb-4" />
<PreviewColor title="Scan Color" v-model="scanColor" />
<PreviewSlider
title="Line Thickness"
v-model="lineThickness"
:min="1"
:max="4"
:step="0.1"
/>
<PreviewSlider
title="Grid Scale"
v-model="gridScale"
:min="0.02"
:max="0.5"
:step="0.01"
/>
<PreviewSlider
title="Line Jitter"
v-model="lineJitter"
:min="0"
:max="1"
:step="0.01"
/>
<PreviewSlider
title="Scan Glow"
v-model="scanGlow"
:min="0.1"
:max="3"
:step="0.1"
/>
<PreviewSlider
title="Scan Softness"
v-model="scanSoftness"
:min="0.1"
:max="4"
:step="0.1"
/>
<PreviewSwitch title="Enable Post" v-model="enablePost" />
<PreviewSlider
title="Chromatic Aberration"
v-model="chromaticAberration"
:min="0"
:max="0.01"
:step="0.0005"
/>
<PreviewSlider
title="Noise Intensity"
v-model="noiseIntensity"
:min="0"
:max="0.1"
:step="0.005"
/>
<PreviewSwitch title="Enable Webcam" v-model="enableWebcam" />
<PreviewSwitch title="Show Preview HUD" v-model="showPreview" />
</Customize>
<PropTable :data="propData" />
<Dependencies :dependency-list="['three', 'postprocessing', 'face-api.js']" />
</template>
<template #code>
<CodeExample :code-object="gridScan" />
</template>
<template #cli>
<CliInstallation :command="gridScan.cli" />
</template>
</TabbedLayout>
</template>
<script setup lang="ts">
import { ref } from 'vue';
import TabbedLayout from '@/components/common/TabbedLayout.vue';
import PropTable from '@/components/common/PropTable.vue';
import Dependencies from '@/components/code/Dependencies.vue';
import CliInstallation from '@/components/code/CliInstallation.vue';
import CodeExample from '@/components/code/CodeExample.vue';
import Customize from '@/components/common/Customize.vue';
import PreviewSwitch from '@/components/common/PreviewSwitch.vue';
import PreviewSlider from '@/components/common/PreviewSlider.vue';
import PreviewColor from '@/components/common/PreviewColor.vue';
import BackgroundContent from '@/components/common/BackgroundContent.vue';
import GridScan from '../../content/Backgrounds/GridScan/GridScan.vue';
import { gridScan } from '@/constants/code/Backgrounds/gridScanCode';
const lineThickness = ref(1);
const gridScale = ref(0.1);
const lineJitter = ref(0.1);
const linesColor = ref('#392e4e');
const scanColor = ref('#FF9FFC');
const enablePost = ref(true);
const chromaticAberration = ref(0.002);
const noiseIntensity = ref(0.01);
const scanGlow = ref(0.5);
const scanSoftness = ref(2);
const enableWebcam = ref(false);
const showPreview = ref(false);
const propData = [
{ name: 'enableWebcam', type: 'boolean', default: 'false', description: 'Enable face tracking via webcam.' },
{ name: 'showPreview', type: 'boolean', default: 'false', description: 'Show webcam preview/debug HUD.' },
{
name: 'modelsPath',
type: 'string',
default: 'CDN URL',
description: 'Path/URL to face-api.js models.'
},
{ name: 'sensitivity', type: 'number', default: '0.55', description: 'Overall responsiveness to input.' },
{ name: 'lineThickness', type: 'number', default: '1', description: 'Grid line thickness.' },
{ name: 'linesColor', type: 'string', default: "'#392e4e'", description: 'Color of the grid lines.' },
{ name: 'gridScale', type: 'number', default: '0.1', description: 'Grid spacing scale (smaller = denser).' },
{ name: 'lineStyle', type: "'solid' | 'dashed' | 'dotted'", default: "'solid'", description: 'Grid line style.' },
{ name: 'lineJitter', type: 'number', default: '0.1', description: 'Animated jitter along the grid lines.' },
{ name: 'enablePost', type: 'boolean', default: 'true', description: 'Enable post-processing effects.' },
{ name: 'bloomIntensity', type: 'number', default: '0', description: 'Bloom strength.' },
{ name: 'bloomThreshold', type: 'number', default: '0', description: 'Bloom luminance threshold.' },
{ name: 'bloomSmoothing', type: 'number', default: '0', description: 'Bloom threshold smoothing.' },
{
name: 'chromaticAberration',
type: 'number',
default: '0.002',
description: 'Chromatic aberration offset (post).'
},
{ name: 'noiseIntensity', type: 'number', default: '0.01', description: 'Additive film grain intensity.' },
{ name: 'scanColor', type: 'string', default: "'#FF9FFC'", description: 'Color of the scan beam/aura.' },
{ name: 'scanOpacity', type: 'number', default: '0.4', description: 'Opacity of the scan effect.' },
{
name: 'scanDirection',
type: "'forward' | 'backward' | 'pingpong'",
default: "'pingpong'",
description: 'Scan motion.'
},
{ name: 'scanSoftness', type: 'number', default: '2', description: 'Softness of scan band edges.' },
{ name: 'scanGlow', type: 'number', default: '0.5', description: 'Relative width/intensity of glow.' },
{ name: 'scanPhaseTaper', type: 'number', default: '0.9', description: 'Fade-in/out window for the phase.' },
{ name: 'scanDuration', type: 'number', default: '2.0', description: 'Duration of a scan cycle (seconds).' },
{ name: 'scanDelay', type: 'number', default: '2.0', description: 'Delay between scan cycles (seconds).' },
{ name: 'enableGyro', type: 'boolean', default: 'false', description: 'Use device orientation for input.' },
{ name: 'scanOnClick', type: 'boolean', default: 'false', description: 'Trigger a scan when clicking.' },
{ name: 'snapBackDelay', type: 'number', default: '250', description: 'Delay (ms) before input recenters.' },
{ name: 'className', type: 'string', default: "''", description: 'Additional CSS classes.' },
{ name: 'style', type: 'CSSProperties', default: '{}', description: 'Inline style overrides.' }
];
</script>