feat: add interactive canvas dot grid and hero section components with cursor-responsive hover effects

components/sections/HeroDotCanvas.tsx

@@ -25,21 +25,17 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
     const minY = 3; // Grid extends to the top of the card
     const maxY = 555;
 
-    // Scaling constants per user reference:
-    // dotmin: default radius of the dots (1.5px)
-    // dotsizebase: peak radius directly under the cursor (2.5px - smaller and more refined)
-    // decay: size drop-off per grid unit (0.32) -> ~38px tight interaction radius
+    // Scaling constants per original reference:
     const dotmin = 1.5;
     const dotsizebase = 4.5;
     const decay = 0.3;
-    const DOT_HOVER_BRIGHTNESS = 0.03; // Extra brightness boost when hovered (0.13 = subtle/soft, increase for brighter dots)
-    const LOGO_HOVER_BRIGHTNESS = 0.28; // Peak brightness multiplier for logos (scales based on default brightness)
+    const DOT_HOVER_BRIGHTNESS = 0.03; // Extra brightness boost when hovered
+    const LOGO_HOVER_BRIGHTNESS = 0.28; // Peak brightness multiplier for logos
 
     // Reaction delay & trailing lag constants:
-    // Lower values = smoother delay and trailing inertia
-    const LERP_LAG = 0.07; // Delay in tracking cursor movement
-    const FADE_IN_LAG = 0.07; // Delay to smoothly bloom up
-    const FADE_OUT_LAG = 0.04; // Lingering delay before returning to rest
+    const LERP_LAG = 0.07;
+    const FADE_IN_LAG = 0.07;
+    const FADE_OUT_LAG = 0.04;
 
     // Pre-calculate dot grid coordinates
     const dots: { x: number; y: number }[] = [];
@@ -49,8 +45,6 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       }
     }
 
-    const numCols = Math.round((maxX - minX) / rowsize) + 1; // 155
-    const numRows = Math.round((maxY - minY) / rowsize) + 1; // 43
     const maxRadius = ((dotsizebase - dotmin) / decay) * rowsize; // ~120px
 
     // Cursor tracking state
@@ -84,8 +78,6 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       // Sizing matches Next.js Image object-cover object-top
       scale = height / SVG_HEIGHT;
       offsetX = (width - SVG_WIDTH * scale) / 2;
-
-      draw();
     };
 
     // Load the illuminated bright logo patterns for cursor reaction
@@ -93,7 +85,6 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
     let brightLogoLoaded = false;
     brightLogoImg.onload = () => {
       brightLogoLoaded = true;
-      draw();
     };
     brightLogoImg.src = "/assets/images/hero_logo_patterns.svg";
 
@@ -105,9 +96,7 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       spotCtx = spotCanvas.getContext("2d");
     }
 
-
-
-    // Bottom curved cutout path from line 1145 of hero_back.svg (covers bottom corners)
+    // Bottom curved cutout path from line 1144 of hero_back.svg (covers bottom corners)
     const bottomPath =
       typeof Path2D !== "undefined"
         ? new Path2D(
@@ -115,16 +104,18 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
           )
         : null;
 
-    const draw = () => {
+    const draw = (t: number) => {
       ctx.clearRect(0, 0, width, height);
 
       // 1. Single-pass dot rendering:
-      // Every dot is drawn EXACTLY ONCE with its dynamic radius r
-      // Eliminates any duplicate dot layers completely!
-      ctx.fillStyle = "rgba(255, 255, 255, 0.18)";
+      // Preserves original look, with dynamic, fast acoustic sound-wave undulation
+      ctx.fillStyle = "rgba(255, 255, 255, 0.22)";
       ctx.beginPath();
+
       for (let i = 0; i < dots.length; i++) {
         const dot = dots[i];
+
+        // Static dot grid (no wave animation on dots per user request)
         const screenX = dot.x * scale + offsetX;
         const screenY = dot.y * scale;
 
@@ -132,9 +123,12 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
 
         let r = dotmin;
         if (currentStrength > 0.005) {
-          const scaler = Math.hypot((currentX - dot.x) / rowsize, (currentY - dot.y) / rowsize);
-          const addedSize = Math.max(0, (dotsizebase - dotmin) - scaler * decay);
-          r = dotmin + addedSize * currentStrength;
+          const scaler = Math.hypot(
+            (currentX - dot.x) / rowsize,
+            (currentY - dot.y) / rowsize
+          );
+          const addedSize = Math.max(0, dotsizebase - dotmin - scaler * decay);
+          r += addedSize * currentStrength;
         }
 
         ctx.moveTo(screenX + r, screenY);
@@ -142,8 +136,7 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       }
       ctx.fill();
 
-      // 2. Apply vertical fade gradient mask matching the SVG's dotFadeMask
-      // Invisible dots on top stay invisible; transparent dots stay transparent!
+      // 2. Apply vertical fade gradient mask matching original dotFadeMask
       ctx.globalCompositeOperation = "destination-in";
       const fadeGrad = ctx.createLinearGradient(0, 45 * scale, 0, 566 * scale);
       fadeGrad.addColorStop(0, "rgba(255, 255, 255, 0)");
@@ -153,8 +146,7 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       ctx.fillStyle = fadeGrad;
       ctx.fillRect(0, 0, width, height);
 
-      // 3. Cut out the bottom curved shape matching line 1145 of hero_back.svg:
-      // Preserves the authentic curved arch of the dots pattern (matching previous commits)
+      // 3. Cut out the bottom curved shape matching line 1144 of hero_back.svg
       if (bottomPath) {
         ctx.globalCompositeOperation = "destination-out";
         ctx.save();
@@ -167,28 +159,29 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       ctx.globalCompositeOperation = "source-over";
 
       // 4. Subtle hover illumination on dots:
-      // Uses source-atop so it ONLY gently highlights the already-drawn & masked dots,
-      // strictly guaranteeing that NO dots outside the bottom curve are ever illuminated!
       if (DOT_HOVER_BRIGHTNESS > 0.001 && currentStrength > 0.005) {
         ctx.globalCompositeOperation = "source-atop";
         const scX = currentX * scale + offsetX;
         const scY = currentY * scale;
         const pRad = maxRadius * scale;
         const dotLight = ctx.createRadialGradient(scX, scY, 0, scX, scY, pRad);
-        dotLight.addColorStop(0, `rgba(255, 255, 255, ${(DOT_HOVER_BRIGHTNESS * 6 * currentStrength).toFixed(3)})`);
-        dotLight.addColorStop(0.6, `rgba(255, 255, 255, ${(DOT_HOVER_BRIGHTNESS * 2 * currentStrength).toFixed(3)})`);
+        dotLight.addColorStop(
+          0,
+          `rgba(255, 255, 255, ${(DOT_HOVER_BRIGHTNESS * 6 * currentStrength).toFixed(3)})`
+        );
+        dotLight.addColorStop(
+          0.6,
+          `rgba(255, 255, 255, ${(DOT_HOVER_BRIGHTNESS * 2 * currentStrength).toFixed(3)})`
+        );
         dotLight.addColorStop(1, "rgba(255, 255, 255, 0)");
         ctx.fillStyle = dotLight;
         ctx.fillRect(scX - pRad, scY - pRad, pRad * 2, pRad * 2);
         ctx.globalCompositeOperation = "source-over";
       }
 
-      // 5. Pixel-precise radial spotlight for the TeamBy logo patterns:
-      // - Logos DO NOT scale (preserve exact geometric dimensions)
-      // - Radial gradient centered at cursor provides continuous falloff
-      // - Any icon at the edge of the radius is partially illuminated only where the radius reaches!
+      // 5. Pixel-precise radial spotlight for TeamBy logo patterns:
       if (currentStrength > 0.005 && brightLogoLoaded && spotCanvas && spotCtx) {
-        const spotRadiusSvg = maxRadius; // 120px in SVG units matching cursor reach
+        const spotRadiusSvg = maxRadius;
         const spotRadiusScreen = spotRadiusSvg * scale;
         const spotSize = Math.ceil(spotRadiusScreen * 2);
 
@@ -205,19 +198,18 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
         const scX = currentX * scale + offsetX;
         const scY = currentY * scale;
 
-        // Clear offscreen spotlight canvas
         spotCtx.clearRect(0, 0, spotSize, spotSize);
-
-        // Position the full bright logo SVG so that cursor point (scX, scY) lands at (spotRadiusScreen, spotRadiusScreen)
         spotCtx.save();
         spotCtx.translate(spotRadiusScreen - scX, spotRadiusScreen - scY);
-        spotCtx.drawImage(brightLogoImg, offsetX, 0, SVG_WIDTH * scale, SVG_HEIGHT * scale);
+        spotCtx.drawImage(
+          brightLogoImg,
+          offsetX,
+          0,
+          SVG_WIDTH * scale,
+          SVG_HEIGHT * scale
+        );
         spotCtx.restore();
 
-        // Calculate the logo's intrinsic default brightness at this cursor position in hero_back.svg:
-        // - Logos under the glowing light orbs at (1325, 194) and (531, 194) are naturally bright
-        // - Logos in darker areas are naturally dark
-        // - Logos near the top taper to 0 via top atmospheric fade
         const dLeft = Math.hypot((currentX - 531) / 220, (currentY - 194) / 180);
         const dRight = Math.hypot((currentX - 1325) / 220, (currentY - 194) / 180);
         const orbLight = Math.max(0, 1 - Math.min(dLeft, dRight));
@@ -226,52 +218,62 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
         const topFade = tTop * tTop * (3 - 2 * tTop);
 
         const defaultBrightness = (0.2 + 0.8 * orbLight) * topFade;
-        const peakBoost = LOGO_HOVER_BRIGHTNESS * (0.2 + 0.8 * defaultBrightness) * topFade * currentStrength;
+        const peakBoost =
+          LOGO_HOVER_BRIGHTNESS *
+          (0.2 + 0.8 * defaultBrightness) *
+          topFade *
+          currentStrength;
 
-        // Feather with smooth radial gradient centered at (spotRadiusScreen, spotRadiusScreen):
         spotCtx.globalCompositeOperation = "destination-in";
         const rad = spotCtx.createRadialGradient(
-          spotRadiusScreen, spotRadiusScreen, 0,
-          spotRadiusScreen, spotRadiusScreen, spotRadiusScreen
+          spotRadiusScreen,
+          spotRadiusScreen,
+          0,
+          spotRadiusScreen,
+          spotRadiusScreen,
+          spotRadiusScreen
         );
         rad.addColorStop(0, `rgba(255, 255, 255, ${peakBoost.toFixed(3)})`);
-        rad.addColorStop(0.5, `rgba(255, 255, 255, ${(peakBoost * 0.45).toFixed(3)})`);
-        rad.addColorStop(0.85, `rgba(255, 255, 255, ${(peakBoost * 0.12).toFixed(3)})`);
+        rad.addColorStop(
+          0.5,
+          `rgba(255, 255, 255, ${(peakBoost * 0.45).toFixed(3)})`
+        );
+        rad.addColorStop(
+          0.85,
+          `rgba(255, 255, 255, ${(peakBoost * 0.12).toFixed(3)})`
+        );
         rad.addColorStop(1, "rgba(255, 255, 255, 0)");
 
         spotCtx.fillStyle = rad;
         spotCtx.fillRect(0, 0, spotSize, spotSize);
         spotCtx.globalCompositeOperation = "source-over";
 
-        // Blit the illuminated logo spotlight onto the main canvas
-        ctx.drawImage(spotCanvas, scX - spotRadiusScreen, scY - spotRadiusScreen, spotSize, spotSize);
+        ctx.drawImage(
+          spotCanvas,
+          scX - spotRadiusScreen,
+          scY - spotRadiusScreen,
+          spotSize,
+          spotSize
+        );
       }
     };
 
+    // Smooth animation loop for subtle acoustic dot waviness and hover reaction
     const loop = () => {
       if (isHovering) {
         currentX += (targetX - currentX) * LERP_LAG;
         currentY += (targetY - currentY) * LERP_LAG;
         currentStrength += (targetStrength - currentStrength) * FADE_IN_LAG;
-      } else {
+      } else if (currentStrength > 0.001) {
         currentStrength += (0 - currentStrength) * FADE_OUT_LAG;
-      }
-
-      draw();
-
-      if (isHovering || currentStrength > 0.005) {
-        animFrameId = requestAnimationFrame(loop);
       } else {
         currentStrength = 0;
-        draw();
-        animFrameId = null;
       }
-    };
 
-    const startLoop = () => {
-      if (!animFrameId) {
-        animFrameId = requestAnimationFrame(loop);
-      }
+      const t = performance.now() * 0.001;
+      draw(t);
+
+      animFrameId = requestAnimationFrame(loop);
     };
 
     const handleMouseMove = (e: MouseEvent) => {
@@ -279,7 +281,6 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
       const targetArea = section || canvas;
       const sRect = targetArea.getBoundingClientRect();
 
-      // Check if cursor is anywhere within the hero section
       if (
         e.clientX >= sRect.left &&
         e.clientX <= sRect.right &&
@@ -287,7 +288,6 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
         e.clientY <= sRect.bottom
       ) {
         const cRect = canvas.getBoundingClientRect();
-        // Convert client coordinates to SVG grid coordinate space
         targetX = (e.clientX - cRect.left - offsetX) / scale;
         targetY = (e.clientY - cRect.top) / scale;
         targetStrength = 1;
@@ -297,25 +297,23 @@ export function HeroDotCanvas({ sectionRef }: HeroDotCanvasProps) {
           currentX = targetX;
           currentY = targetY;
         }
-
-        startLoop();
       } else if (isHovering) {
         targetStrength = 0;
         isHovering = false;
-        startLoop();
       }
     };
 
     const handleMouseLeave = () => {
       targetStrength = 0;
       isHovering = false;
-      startLoop();
     };
 
     resize();
     const ro = new ResizeObserver(() => resize());
     ro.observe(canvas);
 
+    animFrameId = requestAnimationFrame(loop);
+
     window.addEventListener("mousemove", handleMouseMove, { passive: true });
     window.addEventListener("mouseleave", handleMouseLeave);
 

components/sections/HeroSection.tsx

@@ -17,7 +17,7 @@ export function HeroSection() {
       {/* Background Graphic & Curve (back_4178_60221: x: 32, y: 230, w: 1856, h: 566) */}
       <div className="absolute top-[230px] left-1/2 -translate-x-1/2 w-[1856px] max-w-[calc(100vw-64px)] h-[566px] rounded-b-[32px] overflow-hidden z-0">
         <Image
-          src="/assets/images/hero_back.svg"
+          src="/assets/images/hero_back.svg?v=faded_waves_v8"
           alt=""
           fill
           priority

public/assets/images/hero_back.svg

@@ -1016,19 +1016,29 @@
 <path d="M567.876 344.795C295.596 341.558 23.316 330.933 -220.116 318.315C-233.837 317.604 -247.467 316.886 -261 316.163V614H-220.116H567.876H2117V316C1603.93 330.781 1089.77 350.894 567.876 344.795Z" fill="#001766"/>
 </g>
 <g filter="url(#filter1_f_4179_62380)">
-<path d="M-32 854.998L1888 855V255.003C1888 255.003 1536.5 335 928 335.001C319.5 335.003 -32 255 -32 255V854.998Z" fill="#0029B2"/>
+<path d="M-32 854.998L1888 855V255.003C1888 255.003 1536.5 335 928 335.001C319.5 335.003 -32 255 -32 255V854.998Z" fill="#0029B2">
+  <animate attributeName="d" dur="5.2s" repeatCount="indefinite" values="M-32 855L1888 855V255C1888 255 1536.5 335 928 335C319.5 335 -32 255 -32 255V855Z;M-32 855L1888 855V170C1888 170 1480 260 928 445C380 250 -32 330 -32 330V855Z;M-32 855L1888 855V330C1888 330 1590 410 928 235C260 420 -32 170 -32 170V855Z;M-32 855L1888 855V215C1888 215 1505 295 928 375C345 295 -32 285 -32 285V855Z;M-32 855L1888 855V255C1888 255 1536.5 335 928 335C319.5 335 -32 255 -32 255V855Z" />
+</path>
 </g>
 <g filter="url(#filter2_f_4179_62380)">
-<path d="M-32 804.998L1888 805V305.002C1888 305.002 1532.5 385.001 928 385.001C323.5 385.001 -32 305 -32 305V804.998Z" fill="#3D6FE5"/>
+<path d="M-32 804.998L1888 805V305.002C1888 305.002 1532.5 385.001 928 385.001C323.5 385.001 -32 305 -32 305V804.998Z" fill="#3D6FE5">
+  <animate attributeName="d" dur="5.8s" repeatCount="indefinite" values="M-32 805L1888 805V305C1888 305 1532.5 385 928 385C323.5 385 -32 305 -32 305V805Z;M-32 805L1888 805V220C1888 220 1475 310 928 495C385 300 -32 380 -32 380V805Z;M-32 805L1888 805V380C1888 380 1590 460 928 285C260 470 -32 220 -32 220V805Z;M-32 805L1888 805V265C1888 265 1505 345 928 425C345 345 -32 335 -32 335V805Z;M-32 805L1888 805V305C1888 305 1532.5 385 928 385C323.5 385 -32 305 -32 305V805Z" />
+</path>
 </g>
-<g filter="url(#filter3_f_4179_62380)">
-<path d="M-32 754.999L1888 755V355.002C1888 355.002 1532.5 435.001 928 435.001C323.5 435.001 -32 355 -32 355V754.999Z" fill="#4B80FF"/>
+<g filter="url(#filter3_f_4179_62380)" mask="url(#waveFadeMask)">
+<path d="M-32 754.999L1888 755V355.002C1888 355.002 1532.5 435.001 928 435.001C323.5 435.001 -32 355 -32 355V754.999Z" fill="#4B80FF">
+  <animate attributeName="d" dur="7.4s" repeatCount="indefinite" values="M-32 755L1888 755V355C1888 355 1532.5 435 928 435C323.5 435 -32 355 -32 355V755Z;M-32 755L1888 755V270C1888 270 1475 360 928 545C385 350 -32 430 -32 430V755Z;M-32 755L1888 755V430C1888 430 1590 510 928 335C260 520 -32 270 -32 270V755Z;M-32 755L1888 755V315C1888 315 1505 395 928 475C345 395 -32 385 -32 385V755Z;M-32 755L1888 755V355C1888 355 1532.5 435 928 435C323.5 435 -32 355 -32 355V755Z" />
+</path>
 </g>
-<g filter="url(#filter4_f_4179_62380)" style="mix-blend-mode:plus-lighter">
-<path d="M-32 704.999L1888 705V405.001C1888 405.001 1531 485.001 928 485.001C325 485.001 -32 405 -32 405V704.999Z" fill="#2D4D99"/>
+<g filter="url(#filter4_f_4179_62380)" mask="url(#waveFadeMask)" style="mix-blend-mode:plus-lighter">
+<!-- <path d="M-32 704.999L1888 705V405.001C1888 405.001 1531 485.001 928 485.001C325 485.001 -32 405 -32 405V704.999Z" fill="#2D4D99">
+  <animate attributeName="d" dur="5.6s" repeatCount="indefinite" values="M-32 705L1888 705V405C1888 405 1531 485 928 485C325 485 -32 405 -32 405V705Z;M-32 705L1888 705V320C1888 320 1475 410 928 595C385 400 -32 480 -32 480V705Z;M-32 705L1888 705V480C1888 480 1590 560 928 385C260 570 -32 320 -32 320V705Z;M-32 705L1888 705V365C1888 365 1505 445 928 525C345 445 -32 435 -32 435V705Z;M-32 705L1888 705V405C1888 405 1531 485 928 485C325 485 -32 405 -32 405V705Z" />
+</path> -->
 </g>
-<g filter="url(#filter5_f_4179_62380)">
-<path d="M-32 654.999L1888 655V455.001C1888 455.001 1532.5 535 928 535C323.5 535 -32 455 -32 455V654.999Z" fill="white"/>
+<g filter="url(#filter5_f_4179_62380)" mask="url(#waveFadeMask)">
+<!-- <path d="M-32 654.999L1888 655V455.001C1888 455.001 1532.5 535 928 535C323.5 535 -32 455 -32 455V654.999Z" fill="white">
+  <animate attributeName="d" dur="6.0s" repeatCount="indefinite" values="M-32 655L1888 655V455C1888 455 1532.5 535 928 535C323.5 535 -32 455 -32 455V655Z;M-32 655L1888 655V370C1888 370 1475 460 928 645C385 450 -32 530 -32 530V655Z;M-32 655L1888 655V530C1888 530 1590 610 928 435C260 620 -32 370 -32 370V655Z;M-32 655L1888 655V415C1888 415 1505 495 928 575C345 495 -32 485 -32 485V655Z;M-32 655L1888 655V455C1888 455 1532.5 535 928 535C323.5 535 -32 455 -32 455V655Z" />
+</path> -->
 </g>
 <g opacity="0.9">
 <path d="M1344.17 392.934C1343.49 392.934 1342.95 393.481 1342.95 394.157C1342.95 394.832 1343.49 395.379 1344.17 395.379C1344.84 395.379 1345.39 394.832 1345.39 394.157C1345.39 393.481 1344.84 392.934 1344.17 392.934Z" fill="#9ECBFF"/>
@@ -1202,6 +1212,15 @@
 <stop stop-color="#03070D"/>
 <stop offset="1" stop-color="#03070D" stop-opacity="0"/>
 </linearGradient>
+<linearGradient id="waveFadeGrad" x1="0" y1="50" x2="0" y2="380" gradientUnits="userSpaceOnUse">
+  <stop offset="0" stop-color="white" stop-opacity="0"/>
+  <stop offset="0.35" stop-color="white" stop-opacity="0.2"/>
+  <stop offset="0.65" stop-color="white" stop-opacity="0.75"/>
+  <stop offset="1" stop-color="white" stop-opacity="1"/>
+</linearGradient>
+<mask id="waveFadeMask" maskUnits="userSpaceOnUse" x="-100" y="-100" width="2100" height="1000">
+  <rect x="-100" y="-100" width="2100" height="1000" fill="url(#waveFadeGrad)"/>
+</mask>
 <clipPath id="clip0_4179_62380">
 <path d="M0 0H1856V514.8C1856 532.722 1856 541.683 1852.51 548.528C1849.44 554.549 1844.55 559.444 1838.53 562.512C1831.68 566 1822.72 566 1804.8 566H51.1999C33.2783 566 24.3175 566 17.4723 562.512C11.4511 559.444 6.55574 554.549 3.48779 548.528C0 541.683 0 532.722 0 514.8V0Z" fill="white"/>
 </clipPath>