From 01ab91c316617cb69c5e383c94ae9a40daac3416 Mon Sep 17 00:00:00 2001
From: David Haz <davidhzdev@gmail.com>
Date: Sat, 12 Jul 2025 19:16:42 +0300
Subject: [PATCH] Migrate <SplashCursor />

---
 src/constants/Categories.ts                   |    1 +
 src/constants/Components.ts                   |    3 +-
 .../code/Animations/splashCursorCode.ts       |   29 +
 .../Animations/SplashCursor/SplashCursor.vue  | 1267 +++++++++++++++++
 src/demo/Animations/SplashCursorDemo.vue      |  154 ++
 5 files changed, 1453 insertions(+), 1 deletion(-)
 create mode 100644 src/constants/code/Animations/splashCursorCode.ts
 create mode 100644 src/content/Animations/SplashCursor/SplashCursor.vue
 create mode 100644 src/demo/Animations/SplashCursorDemo.vue

diff --git a/src/constants/Categories.ts b/src/constants/Categories.ts
index 95693af..b0503f3 100644
--- a/src/constants/Categories.ts
+++ b/src/constants/Categories.ts
@@ -31,6 +31,7 @@ export const CATEGORIES = [
     subcategories: [
       'Animated Content',
       'Fade Content',
+      'Splash Cursor',
       'Pixel Transition',
       'Ribbons',
       'Glare Hover',
diff --git a/src/constants/Components.ts b/src/constants/Components.ts
index 7b7ea30..74763af 100644
--- a/src/constants/Components.ts
+++ b/src/constants/Components.ts
@@ -9,7 +9,8 @@ const animations = {
   'metallic-paint': () => import('../demo/Animations/MetallicPaintDemo.vue'),
   'magnet': () => import('../demo/Animations/MagnetDemo.vue'),
   'cubes': () => import('../demo/Animations/CubesDemo.vue'),
-  'count-up': () => import('../demo/Animations/CountUpDemo.vue')
+  'count-up': () => import('../demo/Animations/CountUpDemo.vue'),
+  'splash-cursor': () => import('../demo/Animations/SplashCursorDemo.vue'),
 };
 
 const textAnimations = {
diff --git a/src/constants/code/Animations/splashCursorCode.ts b/src/constants/code/Animations/splashCursorCode.ts
new file mode 100644
index 0000000..c8de8ce
--- /dev/null
+++ b/src/constants/code/Animations/splashCursorCode.ts
@@ -0,0 +1,29 @@
+import code from '@content/Animations/SplashCursor/SplashCursor.vue?raw';
+import type { CodeObject } from '../../../types/code';
+
+export const splashCursor: CodeObject = {
+  cli: `npx jsrepo add https://vue-bits.dev/ui/Animations/SplashCursor`,
+  usage: `<template>
+  <SplashCursor
+    :SIM_RESOLUTION="128"
+    :DYE_RESOLUTION="1440"
+    :CAPTURE_RESOLUTION="512"
+    :DENSITY_DISSIPATION="3.5"
+    :VELOCITY_DISSIPATION="2"
+    :PRESSURE="0.1"
+    :PRESSURE_ITERATIONS="20"
+    :CURL="3"
+    :SPLAT_RADIUS="0.2"
+    :SPLAT_FORCE="6000"
+    :SHADING="true"
+    :COLOR_UPDATE_SPEED="10"
+    :BACK_COLOR="{ r: 0.5, g: 0, b: 0 }"
+    :TRANSPARENT="true"
+  />
+</template>
+
+<script setup lang="ts">
+  import SplashCursor from "./SplashCursor.vue";
+</script>`,
+  code
+};
diff --git a/src/content/Animations/SplashCursor/SplashCursor.vue b/src/content/Animations/SplashCursor/SplashCursor.vue
new file mode 100644
index 0000000..e69f127
--- /dev/null
+++ b/src/content/Animations/SplashCursor/SplashCursor.vue
@@ -0,0 +1,1267 @@
+<template>
+  <div class="fixed top-0 left-0 z-50 pointer-events-none w-full h-full">
+    <canvas ref="canvasRef" id="fluid" class="w-screen h-screen block"></canvas>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted, withDefaults } from 'vue';
+
+/* ---------- types ---------- */
+interface ColorRGB {
+  r: number;
+  g: number;
+  b: number;
+}
+
+interface SplashCursorProps {
+  SIM_RESOLUTION?: number;
+  DYE_RESOLUTION?: number;
+  CAPTURE_RESOLUTION?: number;
+  DENSITY_DISSIPATION?: number;
+  VELOCITY_DISSIPATION?: number;
+  PRESSURE?: number;
+  PRESSURE_ITERATIONS?: number;
+  CURL?: number;
+  SPLAT_RADIUS?: number;
+  SPLAT_FORCE?: number;
+  SHADING?: boolean;
+  COLOR_UPDATE_SPEED?: number;
+  BACK_COLOR?: ColorRGB;
+  TRANSPARENT?: boolean;
+}
+
+/* ---------- props & defaults ---------- */
+const props = withDefaults(defineProps<SplashCursorProps>(), {
+  SIM_RESOLUTION: 128,
+  DYE_RESOLUTION: 1440,
+  CAPTURE_RESOLUTION: 512,
+  DENSITY_DISSIPATION: 3.5,
+  VELOCITY_DISSIPATION: 2,
+  PRESSURE: 0.1,
+  PRESSURE_ITERATIONS: 20,
+  CURL: 3,
+  SPLAT_RADIUS: 0.2,
+  SPLAT_FORCE: 6000,
+  SHADING: true,
+  COLOR_UPDATE_SPEED: 10,
+  BACK_COLOR: () => ({ r: 0.5, g: 0, b: 0 }),
+  TRANSPARENT: true
+});
+
+/* ---------- refs ---------- */
+const canvasRef = ref<HTMLCanvasElement | null>(null);
+
+/* ---------- helper types ---------- */
+interface Pointer {
+  id: number;
+  texcoordX: number;
+  texcoordY: number;
+  prevTexcoordX: number;
+  prevTexcoordY: number;
+  deltaX: number;
+  deltaY: number;
+  down: boolean;
+  moved: boolean;
+  color: ColorRGB;
+}
+
+function pointerPrototype(): Pointer {
+  return {
+    id: -1,
+    texcoordX: 0,
+    texcoordY: 0,
+    prevTexcoordX: 0,
+    prevTexcoordY: 0,
+    deltaX: 0,
+    deltaY: 0,
+    down: false,
+    moved: false,
+    color: { r: 0, g: 0, b: 0 }
+  };
+}
+
+/* ---------- main logic ---------- */
+onMounted(() => {
+  const canvas = canvasRef.value;
+  if (!canvas) return;
+
+  const pointers: Pointer[] = [pointerPrototype()];
+
+  const config = {
+    SIM_RESOLUTION: props.SIM_RESOLUTION!,
+    DYE_RESOLUTION: props.DYE_RESOLUTION!,
+    CAPTURE_RESOLUTION: props.CAPTURE_RESOLUTION!,
+    DENSITY_DISSIPATION: props.DENSITY_DISSIPATION!,
+    VELOCITY_DISSIPATION: props.VELOCITY_DISSIPATION!,
+    PRESSURE: props.PRESSURE!,
+    PRESSURE_ITERATIONS: props.PRESSURE_ITERATIONS!,
+    CURL: props.CURL!,
+    SPLAT_RADIUS: props.SPLAT_RADIUS!,
+    SPLAT_FORCE: props.SPLAT_FORCE!,
+    SHADING: props.SHADING,
+    COLOR_UPDATE_SPEED: props.COLOR_UPDATE_SPEED!,
+    PAUSED: false,
+    BACK_COLOR: props.BACK_COLOR,
+    TRANSPARENT: props.TRANSPARENT
+  };
+
+  /* ---------- WebGL context helpers ---------- */
+  const { gl, ext } = getWebGLContext(canvas);
+  if (!gl || !ext) return;
+
+  if (!ext.supportLinearFiltering) {
+    config.DYE_RESOLUTION = 256;
+    config.SHADING = false;
+  }
+
+  function getWebGLContext(canvasEl: HTMLCanvasElement) {
+    const params = {
+      alpha: true,
+      depth: false,
+      stencil: false,
+      antialias: false,
+      preserveDrawingBuffer: false
+    };
+
+    let gl = canvasEl.getContext('webgl2', params) as WebGL2RenderingContext | null;
+
+    if (!gl) {
+      gl = (canvasEl.getContext('webgl', params) ||
+        canvasEl.getContext('experimental-webgl', params)) as WebGL2RenderingContext | null;
+    }
+
+    if (!gl) {
+      throw new Error('Unable to initialize WebGL.');
+    }
+
+    const isWebGL2 = 'drawBuffers' in gl;
+
+    let supportLinearFiltering = false;
+    let halfFloat: OES_texture_half_float | null = null;
+
+    if (isWebGL2) {
+      (gl as WebGL2RenderingContext).getExtension('EXT_color_buffer_float');
+      supportLinearFiltering = !!(gl as WebGL2RenderingContext).getExtension('OES_texture_float_linear');
+    } else {
+      halfFloat = gl.getExtension('OES_texture_half_float');
+      supportLinearFiltering = !!gl.getExtension('OES_texture_half_float_linear');
+    }
+
+    gl.clearColor(0, 0, 0, 1);
+
+    const halfFloatTexType = isWebGL2
+      ? (gl as WebGL2RenderingContext).HALF_FLOAT
+      : (halfFloat && (halfFloat as OES_texture_half_float).HALF_FLOAT_OES) || 0;
+
+    let formatRGBA: { internalFormat: number; format: number } | null;
+    let formatRG: { internalFormat: number; format: number } | null;
+    let formatR: { internalFormat: number; format: number } | null;
+
+    if (isWebGL2) {
+      formatRGBA = getSupportedFormat(gl, (gl as WebGL2RenderingContext).RGBA16F, gl.RGBA, halfFloatTexType);
+      formatRG = getSupportedFormat(
+        gl,
+        (gl as WebGL2RenderingContext).RG16F,
+        (gl as WebGL2RenderingContext).RG,
+        halfFloatTexType
+      );
+      formatR = getSupportedFormat(
+        gl,
+        (gl as WebGL2RenderingContext).R16F,
+        (gl as WebGL2RenderingContext).RED,
+        halfFloatTexType
+      );
+    } else {
+      formatRGBA = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
+      formatRG = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
+      formatR = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
+    }
+
+    return {
+      gl,
+      ext: {
+        formatRGBA,
+        formatRG,
+        formatR,
+        halfFloatTexType,
+        supportLinearFiltering
+      }
+    };
+  }
+
+  function getSupportedFormat(
+    gl: WebGLRenderingContext | WebGL2RenderingContext,
+    internalFormat: number,
+    format: number,
+    type: number
+  ): { internalFormat: number; format: number } | null {
+    if (!supportRenderTextureFormat(gl, internalFormat, format, type)) {
+      if ('drawBuffers' in gl) {
+        const gl2 = gl as WebGL2RenderingContext;
+        switch (internalFormat) {
+          case gl2.R16F:
+            return getSupportedFormat(gl2, gl2.RG16F, gl2.RG, type);
+          case gl2.RG16F:
+            return getSupportedFormat(gl2, gl2.RGBA16F, gl2.RGBA, type);
+          default:
+            return null;
+        }
+      }
+      return null;
+    }
+    return { internalFormat, format };
+  }
+
+  function supportRenderTextureFormat(
+    gl: WebGLRenderingContext | WebGL2RenderingContext,
+    internalFormat: number,
+    format: number,
+    type: number
+  ) {
+    const texture = gl.createTexture();
+    if (!texture) return false;
+
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+    gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 4, 4, 0, format, type, null);
+
+    const fbo = gl.createFramebuffer();
+    if (!fbo) return false;
+
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
+    const status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
+    return status === gl.FRAMEBUFFER_COMPLETE;
+  }
+
+  function hashCode(s: string) {
+    if (!s.length) return 0;
+    let hash = 0;
+    for (let i = 0; i < s.length; i++) {
+      hash = (hash << 5) - hash + s.charCodeAt(i);
+      hash |= 0;
+    }
+    return hash;
+  }
+
+  function addKeywords(source: string, keywords: string[] | null) {
+    if (!keywords) return source;
+    let keywordsString = '';
+    for (const keyword of keywords) {
+      keywordsString += `#define ${keyword}\n`;
+    }
+    return keywordsString + source;
+  }
+
+  function compileShader(type: number, source: string, keywords: string[] | null = null): WebGLShader | null {
+    const shaderSource = addKeywords(source, keywords);
+    const shader = gl.createShader(type);
+    if (!shader) return null;
+    gl.shaderSource(shader, shaderSource);
+    gl.compileShader(shader);
+    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+      console.trace(gl.getShaderInfoLog(shader));
+    }
+    return shader;
+  }
+
+  function createProgram(vertexShader: WebGLShader | null, fragmentShader: WebGLShader | null): WebGLProgram | null {
+    if (!vertexShader || !fragmentShader) return null;
+    const program = gl.createProgram();
+    if (!program) return null;
+    gl.attachShader(program, vertexShader);
+    gl.attachShader(program, fragmentShader);
+    gl.linkProgram(program);
+    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+      console.trace(gl.getProgramInfoLog(program));
+    }
+    return program;
+  }
+
+  function getUniforms(program: WebGLProgram) {
+    const uniforms: Record<string, WebGLUniformLocation | null> = {};
+    const uniformCount = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
+    for (let i = 0; i < uniformCount; i++) {
+      const uniformInfo = gl.getActiveUniform(program, i);
+      if (uniformInfo) {
+        uniforms[uniformInfo.name] = gl.getUniformLocation(program, uniformInfo.name);
+      }
+    }
+    return uniforms;
+  }
+
+  class Program {
+    program: WebGLProgram | null;
+    uniforms: Record<string, WebGLUniformLocation | null>;
+
+    constructor(vertexShader: WebGLShader | null, fragmentShader: WebGLShader | null) {
+      this.program = createProgram(vertexShader, fragmentShader);
+      this.uniforms = this.program ? getUniforms(this.program) : {};
+    }
+
+    bind() {
+      if (this.program) gl.useProgram(this.program);
+    }
+  }
+
+  class Material {
+    vertexShader: WebGLShader | null;
+    fragmentShaderSource: string;
+    programs: Record<number, WebGLProgram | null>;
+    activeProgram: WebGLProgram | null;
+    uniforms: Record<string, WebGLUniformLocation | null>;
+
+    constructor(vertexShader: WebGLShader | null, fragmentShaderSource: string) {
+      this.vertexShader = vertexShader;
+      this.fragmentShaderSource = fragmentShaderSource;
+      this.programs = {};
+      this.activeProgram = null;
+      this.uniforms = {};
+    }
+
+    setKeywords(keywords: string[]) {
+      let hash = 0;
+      for (const kw of keywords) {
+        hash += hashCode(kw);
+      }
+      let program = this.programs[hash];
+      if (program == null) {
+        const fragmentShader = compileShader(gl.FRAGMENT_SHADER, this.fragmentShaderSource, keywords);
+        program = createProgram(this.vertexShader, fragmentShader);
+        this.programs[hash] = program;
+      }
+      if (program === this.activeProgram) return;
+      if (program) {
+        this.uniforms = getUniforms(program);
+      }
+      this.activeProgram = program;
+    }
+
+    bind() {
+      if (this.activeProgram) {
+        gl.useProgram(this.activeProgram);
+      }
+    }
+  }
+
+  /* ---------- shaders ---------- */
+  const baseVertexShader = compileShader(
+    gl.VERTEX_SHADER,
+    `
+      precision highp float;
+      attribute vec2 aPosition;
+      varying vec2 vUv;
+      varying vec2 vL;
+      varying vec2 vR;
+      varying vec2 vT;
+      varying vec2 vB;
+      uniform vec2 texelSize;
+      void main () {
+        vUv = aPosition * 0.5 + 0.5;
+        vL = vUv - vec2(texelSize.x, 0.0);
+        vR = vUv + vec2(texelSize.x, 0.0);
+        vT = vUv + vec2(0.0, texelSize.y);
+        vB = vUv - vec2(0.0, texelSize.y);
+        gl_Position = vec4(aPosition, 0.0, 1.0);
+      }
+    `
+  );
+
+  const copyShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      uniform sampler2D uTexture;
+      void main () {
+        gl_FragColor = texture2D(uTexture, vUv);
+      }
+    `
+  );
+
+  const clearShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      uniform sampler2D uTexture;
+      uniform float value;
+      void main () {
+        gl_FragColor = value * texture2D(uTexture, vUv);
+      }
+    `
+  );
+
+  const displayShaderSource = `
+      precision highp float;
+      precision highp sampler2D;
+      varying vec2 vUv;
+      varying vec2 vL;
+      varying vec2 vR;
+      varying vec2 vT;
+      varying vec2 vB;
+      uniform sampler2D uTexture;
+      uniform sampler2D uDithering;
+      uniform vec2 ditherScale;
+      uniform vec2 texelSize;
+      vec3 linearToGamma (vec3 color) {
+          color = max(color, vec3(0));
+          return max(1.055 * pow(color, vec3(0.416666667)) - 0.055, vec3(0));
+      }
+      void main () {
+          vec3 c = texture2D(uTexture, vUv).rgb;
+          #ifdef SHADING
+              vec3 lc = texture2D(uTexture, vL).rgb;
+              vec3 rc = texture2D(uTexture, vR).rgb;
+              vec3 tc = texture2D(uTexture, vT).rgb;
+              vec3 bc = texture2D(uTexture, vB).rgb;
+              float dx = length(rc) - length(lc);
+              float dy = length(tc) - length(bc);
+              vec3 n = normalize(vec3(dx, dy, length(texelSize)));
+              vec3 l = vec3(0.0, 0.0, 1.0);
+              float diffuse = clamp(dot(n, l) + 0.7, 0.7, 1.0);
+              c *= diffuse;
+          #endif
+          float a = max(c.r, max(c.g, c.b));
+          gl_FragColor = vec4(c, a);
+      }
+    `;
+
+  const splatShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision highp float;
+      precision highp sampler2D;
+      varying vec2 vUv;
+      uniform sampler2D uTarget;
+      uniform float aspectRatio;
+      uniform vec3 color;
+      uniform vec2 point;
+      uniform float radius;
+      void main () {
+          vec2 p = vUv - point.xy;
+          p.x *= aspectRatio;
+          vec3 splat = exp(-dot(p, p) / radius) * color;
+          vec3 base = texture2D(uTarget, vUv).xyz;
+          gl_FragColor = vec4(base + splat, 1.0);
+      }
+    `
+  );
+
+  const advectionShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision highp float;
+      precision highp sampler2D;
+      varying vec2 vUv;
+      uniform sampler2D uVelocity;
+      uniform sampler2D uSource;
+      uniform vec2 texelSize;
+      uniform vec2 dyeTexelSize;
+      uniform float dt;
+      uniform float dissipation;
+      vec4 bilerp (sampler2D sam, vec2 uv, vec2 tsize) {
+          vec2 st = uv / tsize - 0.5;
+          vec2 iuv = floor(st);
+          vec2 fuv = fract(st);
+          vec4 a = texture2D(sam, (iuv + vec2(0.5, 0.5)) * tsize);
+          vec4 b = texture2D(sam, (iuv + vec2(1.5, 0.5)) * tsize);
+          vec4 c = texture2D(sam, (iuv + vec2(0.5, 1.5)) * tsize);
+          vec4 d = texture2D(sam, (iuv + vec2(1.5, 1.5)) * tsize);
+          return mix(mix(a, b, fuv.x), mix(c, d, fuv.x), fuv.y);
+      }
+      void main () {
+          #ifdef MANUAL_FILTERING
+              vec2 coord = vUv - dt * bilerp(uVelocity, vUv, texelSize).xy * texelSize;
+              vec4 result = bilerp(uSource, coord, dyeTexelSize);
+          #else
+              vec2 coord = vUv - dt * texture2D(uVelocity, vUv).xy * texelSize;
+              vec4 result = texture2D(uSource, coord);
+          #endif
+          float decay = 1.0 + dissipation * dt;
+          gl_FragColor = result / decay;
+      }
+    `,
+    ext.supportLinearFiltering ? null : ['MANUAL_FILTERING']
+  );
+
+  const divergenceShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      varying highp vec2 vL;
+      varying highp vec2 vR;
+      varying highp vec2 vT;
+      varying highp vec2 vB;
+      uniform sampler2D uVelocity;
+      void main () {
+          float L = texture2D(uVelocity, vL).x;
+          float R = texture2D(uVelocity, vR).x;
+          float T = texture2D(uVelocity, vT).y;
+          float B = texture2D(uVelocity, vB).y;
+          vec2 C = texture2D(uVelocity, vUv).xy;
+          if (vL.x < 0.0) { L = -C.x; }
+          if (vR.x > 1.0) { R = -C.x; }
+          if (vT.y > 1.0) { T = -C.y; }
+          if (vB.y < 0.0) { B = -C.y; }
+          float div = 0.5 * (R - L + T - B);
+          gl_FragColor = vec4(div, 0.0, 0.0, 1.0);
+      }
+    `
+  );
+
+  const curlShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      varying highp vec2 vL;
+      varying highp vec2 vR;
+      varying highp vec2 vT;
+      varying highp vec2 vB;
+      uniform sampler2D uVelocity;
+      void main () {
+          float L = texture2D(uVelocity, vL).y;
+          float R = texture2D(uVelocity, vR).y;
+          float T = texture2D(uVelocity, vT).x;
+          float B = texture2D(uVelocity, vB).x;
+          float vorticity = R - L - T + B;
+          gl_FragColor = vec4(0.5 * vorticity, 0.0, 0.0, 1.0);
+      }
+    `
+  );
+
+  const vorticityShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision highp float;
+      precision highp sampler2D;
+      varying vec2 vUv;
+      varying vec2 vL;
+      varying vec2 vR;
+      varying vec2 vT;
+      varying vec2 vB;
+      uniform sampler2D uVelocity;
+      uniform sampler2D uCurl;
+      uniform float curl;
+      uniform float dt;
+      void main () {
+          float L = texture2D(uCurl, vL).x;
+          float R = texture2D(uCurl, vR).x;
+          float T = texture2D(uCurl, vT).x;
+          float B = texture2D(uCurl, vB).x;
+          float C = texture2D(uCurl, vUv).x;
+          vec2 force = 0.5 * vec2(abs(T) - abs(B), abs(R) - abs(L));
+          force /= length(force) + 0.0001;
+          force *= curl * C;
+          force.y *= -1.0;
+          vec2 velocity = texture2D(uVelocity, vUv).xy;
+          velocity += force * dt;
+          velocity = min(max(velocity, -1000.0), 1000.0);
+          gl_FragColor = vec4(velocity, 0.0, 1.0);
+      }
+    `
+  );
+
+  const pressureShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      varying highp vec2 vL;
+      varying highp vec2 vR;
+      varying highp vec2 vT;
+      varying highp vec2 vB;
+      uniform sampler2D uPressure;
+      uniform sampler2D uDivergence;
+      void main () {
+          float L = texture2D(uPressure, vL).x;
+          float R = texture2D(uPressure, vR).x;
+          float T = texture2D(uPressure, vT).x;
+          float B = texture2D(uPressure, vB).x;
+          float C = texture2D(uPressure, vUv).x;
+          float divergence = texture2D(uDivergence, vUv).x;
+          float pressure = (L + R + B + T - divergence) * 0.25;
+          gl_FragColor = vec4(pressure, 0.0, 0.0, 1.0);
+      }
+    `
+  );
+
+  const gradientSubtractShader = compileShader(
+    gl.FRAGMENT_SHADER,
+    `
+      precision mediump float;
+      precision mediump sampler2D;
+      varying highp vec2 vUv;
+      varying highp vec2 vL;
+      varying highp vec2 vR;
+      varying highp vec2 vT;
+      varying highp vec2 vB;
+      uniform sampler2D uPressure;
+      uniform sampler2D uVelocity;
+      void main () {
+          float L = texture2D(uPressure, vL).x;
+          float R = texture2D(uPressure, vR).x;
+          float T = texture2D(uPressure, vT).x;
+          float B = texture2D(uPressure, vB).x;
+          vec2 velocity = texture2D(uVelocity, vUv).xy;
+          velocity.xy -= vec2(R - L, T - B);
+          gl_FragColor = vec4(velocity, 0.0, 1.0);
+      }
+    `
+  );
+
+  /* ---------- geometry helper ---------- */
+  const blit = (() => {
+    const buffer = gl.createBuffer()!;
+    gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-1, -1, -1, 1, 1, 1, 1, -1]), gl.STATIC_DRAW);
+    const elemBuffer = gl.createBuffer()!;
+    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elemBuffer);
+    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([0, 1, 2, 0, 2, 3]), gl.STATIC_DRAW);
+    gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
+    gl.enableVertexAttribArray(0);
+    return (target: FBO | null, doClear = false) => {
+      if (!gl) return;
+      if (!target) {
+        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
+        gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+      } else {
+        gl.viewport(0, 0, target.width, target.height);
+        gl.bindFramebuffer(gl.FRAMEBUFFER, target.fbo);
+      }
+      if (doClear) {
+        gl.clearColor(0, 0, 0, 1);
+        gl.clear(gl.COLOR_BUFFER_BIT);
+      }
+      gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0);
+    };
+  })();
+
+  /* ---------- frame-buffer object helpers ---------- */
+  interface FBO {
+    texture: WebGLTexture;
+    fbo: WebGLFramebuffer;
+    width: number;
+    height: number;
+    texelSizeX: number;
+    texelSizeY: number;
+    attach: (id: number) => number;
+  }
+
+  interface DoubleFBO {
+    width: number;
+    height: number;
+    texelSizeX: number;
+    texelSizeY: number;
+    read: FBO;
+    write: FBO;
+    swap: () => void;
+  }
+
+  let dye: DoubleFBO;
+  let velocity: DoubleFBO;
+  let divergence: FBO;
+  let curl: FBO;
+  let pressure: DoubleFBO;
+
+  const copyProgram = new Program(baseVertexShader, copyShader);
+  const clearProgram = new Program(baseVertexShader, clearShader);
+  const splatProgram = new Program(baseVertexShader, splatShader);
+  const advectionProgram = new Program(baseVertexShader, advectionShader);
+  const divergenceProgram = new Program(baseVertexShader, divergenceShader);
+  const curlProgram = new Program(baseVertexShader, curlShader);
+  const vorticityProgram = new Program(baseVertexShader, vorticityShader);
+  const pressureProgram = new Program(baseVertexShader, pressureShader);
+  const gradienSubtractProgram = new Program(baseVertexShader, gradientSubtractShader);
+  const displayMaterial = new Material(baseVertexShader, displayShaderSource);
+
+  function createFBO(w: number, h: number, internalFormat: number, format: number, type: number, param: number): FBO {
+    gl.activeTexture(gl.TEXTURE0);
+    const texture = gl.createTexture()!;
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, param);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, param);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+    gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, w, h, 0, format, type, null);
+    const fbo = gl.createFramebuffer()!;
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
+    gl.viewport(0, 0, w, h);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+    const texelSizeX = 1 / w;
+    const texelSizeY = 1 / h;
+    return {
+      texture,
+      fbo,
+      width: w,
+      height: h,
+      texelSizeX,
+      texelSizeY,
+      attach(id: number) {
+        gl.activeTexture(gl.TEXTURE0 + id);
+        gl.bindTexture(gl.TEXTURE_2D, texture);
+        return id;
+      }
+    };
+  }
+
+  function createDoubleFBO(
+    w: number,
+    h: number,
+    internalFormat: number,
+    format: number,
+    type: number,
+    param: number
+  ): DoubleFBO {
+    const fbo1 = createFBO(w, h, internalFormat, format, type, param);
+    const fbo2 = createFBO(w, h, internalFormat, format, type, param);
+    return {
+      width: w,
+      height: h,
+      texelSizeX: fbo1.texelSizeX,
+      texelSizeY: fbo1.texelSizeY,
+      read: fbo1,
+      write: fbo2,
+      swap() {
+        const tmp = this.read;
+        this.read = this.write;
+        this.write = tmp;
+      }
+    };
+  }
+
+  function resizeFBO(
+    target: FBO,
+    w: number,
+    h: number,
+    internalFormat: number,
+    format: number,
+    type: number,
+    param: number
+  ) {
+    const newFBO = createFBO(w, h, internalFormat, format, type, param);
+    copyProgram.bind();
+    if (copyProgram.uniforms.uTexture) gl.uniform1i(copyProgram.uniforms.uTexture, target.attach(0));
+    blit(newFBO, false);
+    return newFBO;
+  }
+
+  function resizeDoubleFBO(
+    target: DoubleFBO,
+    w: number,
+    h: number,
+    internalFormat: number,
+    format: number,
+    type: number,
+    param: number
+  ) {
+    if (target.width === w && target.height === h) return target;
+    target.read = resizeFBO(target.read, w, h, internalFormat, format, type, param);
+    target.write = createFBO(w, h, internalFormat, format, type, param);
+    target.width = w;
+    target.height = h;
+    target.texelSizeX = 1 / w;
+    target.texelSizeY = 1 / h;
+    return target;
+  }
+
+  function initFramebuffers() {
+    const simRes = getResolution(config.SIM_RESOLUTION!);
+    const dyeRes = getResolution(config.DYE_RESOLUTION!);
+    const texType = ext.halfFloatTexType;
+    const rgba = ext.formatRGBA;
+    const rg = ext.formatRG;
+    const r = ext.formatR;
+    const filtering = ext.supportLinearFiltering ? gl.LINEAR : gl.NEAREST;
+    gl.disable(gl.BLEND);
+
+    if (!rgba) return;
+
+    if (!dye) {
+      dye = createDoubleFBO(dyeRes.width, dyeRes.height, rgba.internalFormat, rgba.format, texType, filtering);
+    } else {
+      dye = resizeDoubleFBO(dye, dyeRes.width, dyeRes.height, rgba.internalFormat, rgba.format, texType, filtering);
+    }
+
+    if (!rg) return;
+
+    if (!velocity) {
+      velocity = createDoubleFBO(simRes.width, simRes.height, rg.internalFormat, rg.format, texType, filtering);
+    } else {
+      velocity = resizeDoubleFBO(
+        velocity,
+        simRes.width,
+        simRes.height,
+        rg.internalFormat,
+        rg.format,
+        texType,
+        filtering
+      );
+    }
+
+    if (!r) return;
+
+    divergence = createFBO(simRes.width, simRes.height, r.internalFormat, r.format, texType, gl.NEAREST);
+    curl = createFBO(simRes.width, simRes.height, r.internalFormat, r.format, texType, gl.NEAREST);
+    pressure = createDoubleFBO(simRes.width, simRes.height, r.internalFormat, r.format, texType, gl.NEAREST);
+  }
+
+  function updateKeywords() {
+    const displayKeywords: string[] = [];
+    if (config.SHADING) displayKeywords.push('SHADING');
+    displayMaterial.setKeywords(displayKeywords);
+  }
+
+  function getResolution(resolution: number) {
+    const w = gl.drawingBufferWidth;
+    const h = gl.drawingBufferHeight;
+    const aspectRatio = w / h;
+    const aspect = aspectRatio < 1 ? 1 / aspectRatio : aspectRatio;
+    const min = Math.round(resolution);
+    const max = Math.round(resolution * aspect);
+    if (w > h) {
+      return { width: max, height: min };
+    }
+    return { width: min, height: max };
+  }
+
+  function scaleByPixelRatio(input: number) {
+    const pixelRatio = window.devicePixelRatio || 1;
+    return Math.floor(input * pixelRatio);
+  }
+
+  updateKeywords();
+  initFramebuffers();
+
+  let lastUpdateTime = Date.now();
+  let colorUpdateTimer = 0.0;
+
+  function updateFrame() {
+    const dt = calcDeltaTime();
+    if (resizeCanvas()) initFramebuffers();
+    updateColors(dt);
+    applyInputs();
+    step(dt);
+    render(null);
+    requestAnimationFrame(updateFrame);
+  }
+
+  function calcDeltaTime() {
+    const now = Date.now();
+    let dt = (now - lastUpdateTime) / 1000;
+    dt = Math.min(dt, 0.016666);
+    lastUpdateTime = now;
+    return dt;
+  }
+
+  function resizeCanvas() {
+    const width = scaleByPixelRatio(canvas!.clientWidth);
+    const height = scaleByPixelRatio(canvas!.clientHeight);
+    if (canvas!.width !== width || canvas!.height !== height) {
+      canvas!.width = width;
+      canvas!.height = height;
+      return true;
+    }
+    return false;
+  }
+
+  function updateColors(dt: number) {
+    colorUpdateTimer += dt * config.COLOR_UPDATE_SPEED;
+    if (colorUpdateTimer >= 1) {
+      colorUpdateTimer = wrap(colorUpdateTimer, 0, 1);
+      pointers.forEach(p => {
+        p.color = generateColor();
+      });
+    }
+  }
+
+  function applyInputs() {
+    for (const p of pointers) {
+      if (p.moved) {
+        p.moved = false;
+        splatPointer(p);
+      }
+    }
+  }
+
+  /* ---------- simulation step ---------- */
+  function step(dt: number) {
+    gl.disable(gl.BLEND);
+
+    curlProgram.bind();
+    if (curlProgram.uniforms.texelSize) {
+      gl.uniform2f(curlProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (curlProgram.uniforms.uVelocity) {
+      gl.uniform1i(curlProgram.uniforms.uVelocity, velocity.read.attach(0));
+    }
+    blit(curl);
+
+    vorticityProgram.bind();
+    if (vorticityProgram.uniforms.texelSize) {
+      gl.uniform2f(vorticityProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (vorticityProgram.uniforms.uVelocity) {
+      gl.uniform1i(vorticityProgram.uniforms.uVelocity, velocity.read.attach(0));
+    }
+    if (vorticityProgram.uniforms.uCurl) {
+      gl.uniform1i(vorticityProgram.uniforms.uCurl, curl.attach(1));
+    }
+    if (vorticityProgram.uniforms.curl) {
+      gl.uniform1f(vorticityProgram.uniforms.curl, config.CURL);
+    }
+    if (vorticityProgram.uniforms.dt) {
+      gl.uniform1f(vorticityProgram.uniforms.dt, dt);
+    }
+    blit(velocity.write);
+    velocity.swap();
+
+    divergenceProgram.bind();
+    if (divergenceProgram.uniforms.texelSize) {
+      gl.uniform2f(divergenceProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (divergenceProgram.uniforms.uVelocity) {
+      gl.uniform1i(divergenceProgram.uniforms.uVelocity, velocity.read.attach(0));
+    }
+    blit(divergence);
+
+    clearProgram.bind();
+    if (clearProgram.uniforms.uTexture) {
+      gl.uniform1i(clearProgram.uniforms.uTexture, pressure.read.attach(0));
+    }
+    if (clearProgram.uniforms.value) {
+      gl.uniform1f(clearProgram.uniforms.value, config.PRESSURE);
+    }
+    blit(pressure.write);
+    pressure.swap();
+
+    pressureProgram.bind();
+    if (pressureProgram.uniforms.texelSize) {
+      gl.uniform2f(pressureProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (pressureProgram.uniforms.uDivergence) {
+      gl.uniform1i(pressureProgram.uniforms.uDivergence, divergence.attach(0));
+    }
+    for (let i = 0; i < config.PRESSURE_ITERATIONS; i++) {
+      if (pressureProgram.uniforms.uPressure) {
+        gl.uniform1i(pressureProgram.uniforms.uPressure, pressure.read.attach(1));
+      }
+      blit(pressure.write);
+      pressure.swap();
+    }
+
+    gradienSubtractProgram.bind();
+    if (gradienSubtractProgram.uniforms.texelSize) {
+      gl.uniform2f(gradienSubtractProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (gradienSubtractProgram.uniforms.uPressure) {
+      gl.uniform1i(gradienSubtractProgram.uniforms.uPressure, pressure.read.attach(0));
+    }
+    if (gradienSubtractProgram.uniforms.uVelocity) {
+      gl.uniform1i(gradienSubtractProgram.uniforms.uVelocity, velocity.read.attach(1));
+    }
+    blit(velocity.write);
+    velocity.swap();
+
+    advectionProgram.bind();
+    if (advectionProgram.uniforms.texelSize) {
+      gl.uniform2f(advectionProgram.uniforms.texelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    if (!ext.supportLinearFiltering && advectionProgram.uniforms.dyeTexelSize) {
+      gl.uniform2f(advectionProgram.uniforms.dyeTexelSize, velocity.texelSizeX, velocity.texelSizeY);
+    }
+    const velocityId = velocity.read.attach(0);
+    if (advectionProgram.uniforms.uVelocity) {
+      gl.uniform1i(advectionProgram.uniforms.uVelocity, velocityId);
+    }
+    if (advectionProgram.uniforms.uSource) {
+      gl.uniform1i(advectionProgram.uniforms.uSource, velocityId);
+    }
+    if (advectionProgram.uniforms.dt) {
+      gl.uniform1f(advectionProgram.uniforms.dt, dt);
+    }
+    if (advectionProgram.uniforms.dissipation) {
+      gl.uniform1f(advectionProgram.uniforms.dissipation, config.VELOCITY_DISSIPATION);
+    }
+    blit(velocity.write);
+    velocity.swap();
+
+    if (!ext.supportLinearFiltering && advectionProgram.uniforms.dyeTexelSize) {
+      gl.uniform2f(advectionProgram.uniforms.dyeTexelSize, dye.texelSizeX, dye.texelSizeY);
+    }
+    if (advectionProgram.uniforms.uVelocity) {
+      gl.uniform1i(advectionProgram.uniforms.uVelocity, velocity.read.attach(0));
+    }
+    if (advectionProgram.uniforms.uSource) {
+      gl.uniform1i(advectionProgram.uniforms.uSource, dye.read.attach(1));
+    }
+    if (advectionProgram.uniforms.dissipation) {
+      gl.uniform1f(advectionProgram.uniforms.dissipation, config.DENSITY_DISSIPATION);
+    }
+    blit(dye.write);
+    dye.swap();
+  }
+
+  /* ---------- render ---------- */
+  function render(target: FBO | null) {
+    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+    gl.enable(gl.BLEND);
+    drawDisplay(target);
+  }
+
+  function drawDisplay(target: FBO | null) {
+    const width = target ? target.width : gl.drawingBufferWidth;
+    const height = target ? target.height : gl.drawingBufferHeight;
+    displayMaterial.bind();
+    if (config.SHADING && displayMaterial.uniforms.texelSize) {
+      gl.uniform2f(displayMaterial.uniforms.texelSize, 1 / width, 1 / height);
+    }
+    if (displayMaterial.uniforms.uTexture) {
+      gl.uniform1i(displayMaterial.uniforms.uTexture, dye.read.attach(0));
+    }
+    blit(target, false);
+  }
+
+  /* ---------- splats ---------- */
+  function splatPointer(pointer: Pointer) {
+    const dx = pointer.deltaX * config.SPLAT_FORCE;
+    const dy = pointer.deltaY * config.SPLAT_FORCE;
+    splat(pointer.texcoordX, pointer.texcoordY, dx, dy, pointer.color);
+  }
+
+  function clickSplat(pointer: Pointer) {
+    const color = generateColor();
+    color.r *= 10;
+    color.g *= 10;
+    color.b *= 10;
+    const dx = 10 * (Math.random() - 0.5);
+    const dy = 30 * (Math.random() - 0.5);
+    splat(pointer.texcoordX, pointer.texcoordY, dx, dy, color);
+  }
+
+  function splat(x: number, y: number, dx: number, dy: number, color: ColorRGB) {
+    splatProgram.bind();
+    if (splatProgram.uniforms.uTarget) {
+      gl.uniform1i(splatProgram.uniforms.uTarget, velocity.read.attach(0));
+    }
+    if (splatProgram.uniforms.aspectRatio) {
+      gl.uniform1f(splatProgram.uniforms.aspectRatio, canvas!.width / canvas!.height);
+    }
+    if (splatProgram.uniforms.point) {
+      gl.uniform2f(splatProgram.uniforms.point, x, y);
+    }
+    if (splatProgram.uniforms.color) {
+      gl.uniform3f(splatProgram.uniforms.color, dx, dy, 0);
+    }
+    if (splatProgram.uniforms.radius) {
+      gl.uniform1f(splatProgram.uniforms.radius, correctRadius(config.SPLAT_RADIUS / 100)!);
+    }
+    blit(velocity.write);
+    velocity.swap();
+
+    if (splatProgram.uniforms.uTarget) {
+      gl.uniform1i(splatProgram.uniforms.uTarget, dye.read.attach(0));
+    }
+    if (splatProgram.uniforms.color) {
+      gl.uniform3f(splatProgram.uniforms.color, color.r, color.g, color.b);
+    }
+    blit(dye.write);
+    dye.swap();
+  }
+
+  function correctRadius(radius: number) {
+    const aspectRatio = canvas!.width / canvas!.height;
+    if (aspectRatio > 1) radius *= aspectRatio;
+    return radius;
+  }
+
+  /* ---------- pointer helpers ---------- */
+  function updatePointerDownData(pointer: Pointer, id: number, posX: number, posY: number) {
+    pointer.id = id;
+    pointer.down = true;
+    pointer.moved = false;
+    pointer.texcoordX = posX / canvas!.width;
+    pointer.texcoordY = 1 - posY / canvas!.height;
+    pointer.prevTexcoordX = pointer.texcoordX;
+    pointer.prevTexcoordY = pointer.texcoordY;
+    pointer.deltaX = 0;
+    pointer.deltaY = 0;
+    pointer.color = generateColor();
+  }
+
+  function updatePointerMoveData(pointer: Pointer, posX: number, posY: number, color: ColorRGB) {
+    pointer.prevTexcoordX = pointer.texcoordX;
+    pointer.prevTexcoordY = pointer.texcoordY;
+    pointer.texcoordX = posX / canvas!.width;
+    pointer.texcoordY = 1 - posY / canvas!.height;
+    pointer.deltaX = correctDeltaX(pointer.texcoordX - pointer.prevTexcoordX)!;
+    pointer.deltaY = correctDeltaY(pointer.texcoordY - pointer.prevTexcoordY)!;
+    pointer.moved = Math.abs(pointer.deltaX) > 0 || Math.abs(pointer.deltaY) > 0;
+    pointer.color = color;
+  }
+
+  function updatePointerUpData(pointer: Pointer) {
+    pointer.down = false;
+  }
+
+  function correctDeltaX(delta: number) {
+    const aspectRatio = canvas!.width / canvas!.height;
+    if (aspectRatio < 1) delta *= aspectRatio;
+    return delta;
+  }
+
+  function correctDeltaY(delta: number) {
+    const aspectRatio = canvas!.width / canvas!.height;
+    if (aspectRatio > 1) delta /= aspectRatio;
+    return delta;
+  }
+
+  /* ---------- color helpers ---------- */
+  function generateColor(): ColorRGB {
+    const c = HSVtoRGB(Math.random(), 1.0, 1.0);
+    c.r *= 0.15;
+    c.g *= 0.15;
+    c.b *= 0.15;
+    return c;
+  }
+
+  function HSVtoRGB(h: number, s: number, v: number): ColorRGB {
+    let r = 0,
+      g = 0,
+      b = 0;
+    const i = Math.floor(h * 6);
+    const f = h * 6 - i;
+    const p = v * (1 - s);
+    const q = v * (1 - f * s);
+    const t = v * (1 - (1 - f) * s);
+    switch (i % 6) {
+      case 0:
+        r = v;
+        g = t;
+        b = p;
+        break;
+      case 1:
+        r = q;
+        g = v;
+        b = p;
+        break;
+      case 2:
+        r = p;
+        g = v;
+        b = t;
+        break;
+      case 3:
+        r = p;
+        g = q;
+        b = v;
+        break;
+      case 4:
+        r = t;
+        g = p;
+        b = v;
+        break;
+      case 5:
+        r = v;
+        g = p;
+        b = q;
+        break;
+    }
+    return { r, g, b };
+  }
+
+  function wrap(value: number, min: number, max: number) {
+    const range = max - min;
+    if (range === 0) return min;
+    return ((value - min) % range) + min;
+  }
+
+  /* ---------- input events ---------- */
+  window.addEventListener('mousedown', e => {
+    const pointer = pointers[0];
+    const posX = scaleByPixelRatio(e.clientX);
+    const posY = scaleByPixelRatio(e.clientY);
+    updatePointerDownData(pointer, -1, posX, posY);
+    clickSplat(pointer);
+  });
+
+  function handleFirstMouseMove(e: MouseEvent) {
+    const pointer = pointers[0];
+    const posX = scaleByPixelRatio(e.clientX);
+    const posY = scaleByPixelRatio(e.clientY);
+    const color = generateColor();
+    updateFrame();
+    updatePointerMoveData(pointer, posX, posY, color);
+    document.body.removeEventListener('mousemove', handleFirstMouseMove);
+  }
+  document.body.addEventListener('mousemove', handleFirstMouseMove);
+
+  window.addEventListener('mousemove', e => {
+    const pointer = pointers[0];
+    const posX = scaleByPixelRatio(e.clientX);
+    const posY = scaleByPixelRatio(e.clientY);
+    const color = pointer.color;
+    updatePointerMoveData(pointer, posX, posY, color);
+  });
+
+  function handleFirstTouchStart(e: TouchEvent) {
+    const touches = e.targetTouches;
+    const pointer = pointers[0];
+    for (let i = 0; i < touches.length; i++) {
+      const posX = scaleByPixelRatio(touches[i].clientX);
+      const posY = scaleByPixelRatio(touches[i].clientY);
+      updateFrame();
+      updatePointerDownData(pointer, touches[i].identifier, posX, posY);
+    }
+    document.body.removeEventListener('touchstart', handleFirstTouchStart);
+  }
+  document.body.addEventListener('touchstart', handleFirstTouchStart);
+
+  window.addEventListener(
+    'touchstart',
+    e => {
+      const touches = e.targetTouches;
+      const pointer = pointers[0];
+      for (let i = 0; i < touches.length; i++) {
+        const posX = scaleByPixelRatio(touches[i].clientX);
+        const posY = scaleByPixelRatio(touches[i].clientY);
+        updatePointerDownData(pointer, touches[i].identifier, posX, posY);
+      }
+    },
+    false
+  );
+
+  window.addEventListener(
+    'touchmove',
+    e => {
+      const touches = e.targetTouches;
+      const pointer = pointers[0];
+      for (let i = 0; i < touches.length; i++) {
+        const posX = scaleByPixelRatio(touches[i].clientX);
+        const posY = scaleByPixelRatio(touches[i].clientY);
+        updatePointerMoveData(pointer, posX, posY, pointer.color);
+      }
+    },
+    false
+  );
+
+  window.addEventListener('touchend', e => {
+    const touches = e.changedTouches;
+    const pointer = pointers[0];
+    for (let i = 0; i < touches.length; i++) {
+      updatePointerUpData(pointer);
+    }
+  });
+});
+</script>
diff --git a/src/demo/Animations/SplashCursorDemo.vue b/src/demo/Animations/SplashCursorDemo.vue
new file mode 100644
index 0000000..f3776c9
--- /dev/null
+++ b/src/demo/Animations/SplashCursorDemo.vue
@@ -0,0 +1,154 @@
+<template>
+  <div class="splash-cursor-demo">
+    <TabbedLayout>
+      <template #preview>
+        <div class="demo-container">
+          <span class="text-6xl text-center text-[#222] font-black select-none">Move Your Cursor</span>
+        </div>
+
+        <Customize>
+          <PreviewSlider title="Simulation Resolution" v-model="simResolution" :min="64" :max="512" :step="32" />
+
+          <PreviewSlider title="Density Dissipation" v-model="densityDissipation" :min="1" :max="10" :step="0.5" />
+
+          <PreviewSlider title="Splat Force" v-model="splatForce" :min="1000" :max="15000" :step="1000" />
+        </Customize>
+
+        <PropTable :data="propData" />
+      </template>
+
+      <template #code>
+        <CodeExample :code-object="splashCursor" />
+      </template>
+
+      <template #cli>
+        <CliInstallation :command="splashCursor.cli" />
+      </template>
+    </TabbedLayout>
+
+    <SplashCursor
+      :key="rerenderKey"
+      :SIM_RESOLUTION="simResolution"
+      :DENSITY_DISSIPATION="densityDissipation"
+      :SPLAT_FORCE="splatForce"
+    />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue';
+import TabbedLayout from '../../components/common/TabbedLayout.vue';
+import PropTable from '../../components/common/PropTable.vue';
+import CliInstallation from '../../components/code/CliInstallation.vue';
+import CodeExample from '../../components/code/CodeExample.vue';
+import Customize from '../../components/common/Customize.vue';
+import PreviewSlider from '../../components/common/PreviewSlider.vue';
+import SplashCursor from '../../content/Animations/SplashCursor/SplashCursor.vue';
+import { splashCursor } from '@/constants/code/Animations/splashCursorCode';
+import { useForceRerender } from '@/composables/useForceRerender';
+
+const { rerenderKey, forceRerender } = useForceRerender();
+
+const simResolution = ref(128);
+const densityDissipation = ref(3.5);
+const splatForce = ref(6000);
+
+watch([simResolution, densityDissipation, splatForce], () => {
+  forceRerender();
+});
+
+const propData = [
+  {
+    name: 'SIM_RESOLUTION',
+    type: 'number',
+    default: '128',
+    description: 'Fluid simulation resolution for velocity fields.'
+  },
+  {
+    name: 'DYE_RESOLUTION',
+    type: 'number',
+    default: '1440',
+    description: 'Resolution of the color/dye texture.'
+  },
+  {
+    name: 'CAPTURE_RESOLUTION',
+    type: 'number',
+    default: '512',
+    description: 'Resolution used for certain capture operations (rarely changed).'
+  },
+  {
+    name: 'DENSITY_DISSIPATION',
+    type: 'number',
+    default: '3.5',
+    description: 'Rate at which color/density dissipates over time.'
+  },
+  {
+    name: 'VELOCITY_DISSIPATION',
+    type: 'number',
+    default: '2',
+    description: 'Rate at which velocity dissipates over time.'
+  },
+  {
+    name: 'PRESSURE',
+    type: 'number',
+    default: '0.1',
+    description: 'Base pressure for the fluid simulation.'
+  },
+  {
+    name: 'PRESSURE_ITERATIONS',
+    type: 'number',
+    default: '20',
+    description: 'Number of Jacobi iterations used for the pressure solver.'
+  },
+  {
+    name: 'CURL',
+    type: 'number',
+    default: '3',
+    description: 'Amount of vorticity/curl to apply for swirling effects.'
+  },
+  {
+    name: 'SPLAT_RADIUS',
+    type: 'number',
+    default: '0.2',
+    description: "Radius of the 'splat' effect when user interacts."
+  },
+  {
+    name: 'SPLAT_FORCE',
+    type: 'number',
+    default: '6000',
+    description: "Force of the fluid 'splat' on each interaction."
+  },
+  {
+    name: 'SHADING',
+    type: 'boolean',
+    default: 'true',
+    description: 'Toggles simple lighting/shading on the fluid.'
+  },
+  {
+    name: 'COLOR_UPDATE_SPEED',
+    type: 'number',
+    default: '10',
+    description: 'Frequency at which pointer colors are re-randomized.'
+  },
+  {
+    name: 'BACK_COLOR',
+    type: 'object',
+    default: '{ r: 0.5, g: 0, b: 0 }',
+    description: 'Base background color for the fluid. Not always used if TRANSPARENT is true.'
+  },
+  {
+    name: 'TRANSPARENT',
+    type: 'boolean',
+    default: 'true',
+    description: 'Determines if the canvas background should be rendered with alpha.'
+  }
+];
+</script>
+
+<style scoped>
+.demo-container {
+  overflow: hidden;
+  min-height: 300px;
+  padding: 0;
+}
+</style>