Analyze repo for react component integration

client/src/components/Galaxy.tsx

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+import { Renderer, Program, Mesh, Color, Triangle } from "ogl";
+import { useEffect, useRef } from "react";
+
+const vertexShader = `
+attribute vec2 uv;
+attribute vec2 position;
+
+varying vec2 vUv;
+
+void main() {
+  vUv = uv;
+  gl_Position = vec4(position, 0, 1);
+}
+`;
+
+const fragmentShader = `
+precision highp float;
+
+uniform float uTime;
+uniform vec3 uResolution;
+uniform vec2 uFocal;
+uniform vec2 uRotation;
+uniform float uStarSpeed;
+uniform float uDensity;
+uniform float uHueShift;
+uniform float uSpeed;
+uniform vec2 uMouse;
+uniform float uGlowIntensity;
+uniform float uSaturation;
+uniform bool uMouseRepulsion;
+uniform float uTwinkleIntensity;
+uniform float uRotationSpeed;
+uniform float uRepulsionStrength;
+uniform float uMouseActiveFactor;
+uniform float uAutoCenterRepulsion;
+uniform bool uTransparent;
+
+varying vec2 vUv;
+
+#define NUM_LAYER 4.0
+#define STAR_COLOR_CUTOFF 0.2
+#define MAT45 mat2(0.7071, -0.7071, 0.7071, 0.7071)
+#define PERIOD 3.0
+
+float Hash21(vec2 p) {
+  p = fract(p * vec2(123.34, 456.21));
+  p += dot(p, p + 45.32);
+  return fract(p.x * p.y);
+}
+
+float tri(float x) {
+  return abs(fract(x) * 2.0 - 1.0);
+}
+
+float tris(float x) {
+  float t = fract(x);
+  return 1.0 - smoothstep(0.0, 1.0, abs(2.0 * t - 1.0));
+}
+
+float trisn(float x) {
+  float t = fract(x);
+  return 2.0 * (1.0 - smoothstep(0.0, 1.0, abs(2.0 * t - 1.0))) - 1.0;
+}
+
+vec3 hsv2rgb(vec3 c) {
+  vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+  vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+  return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+}
+
+float Star(vec2 uv, float flare) {
+  float d = length(uv);
+  float m = (0.05 * uGlowIntensity) / d;
+  float rays = smoothstep(0.0, 1.0, 1.0 - abs(uv.x * uv.y * 1000.0));
+  m += rays * flare * uGlowIntensity;
+  uv *= MAT45;
+  rays = smoothstep(0.0, 1.0, 1.0 - abs(uv.x * uv.y * 1000.0));
+  m += rays * 0.3 * flare * uGlowIntensity;
+  m *= smoothstep(1.0, 0.2, d);
+  return m;
+}
+
+vec3 StarLayer(vec2 uv) {
+  vec3 col = vec3(0.0);
+
+  vec2 gv = fract(uv) - 0.5; 
+  vec2 id = floor(uv);
+
+  for (int y = -1; y <= 1; y++) {
+    for (int x = -1; x <= 1; x++) {
+      vec2 offset = vec2(float(x), float(y));
+      vec2 si = id + vec2(float(x), float(y));
+      float seed = Hash21(si);
+      float size = fract(seed * 345.32);
+      float glossLocal = tri(uStarSpeed / (PERIOD * seed + 1.0));
+      float flareSize = smoothstep(0.9, 1.0, size) * glossLocal;
+
+      float red = smoothstep(STAR_COLOR_CUTOFF, 1.0, Hash21(si + 1.0)) + STAR_COLOR_CUTOFF;
+      float blu = smoothstep(STAR_COLOR_CUTOFF, 1.0, Hash21(si + 3.0)) + STAR_COLOR_CUTOFF;
+      float grn = min(red, blu) * seed;
+      vec3 base = vec3(red, grn, blu);
+
+      float hue = atan(base.g - base.r, base.b - base.r) / (2.0 * 3.14159) + 0.5;
+      hue = fract(hue + uHueShift / 360.0);
+      float sat = length(base - vec3(dot(base, vec3(0.299, 0.587, 0.114)))) * uSaturation;
+      float val = max(max(base.r, base.g), base.b);
+      base = hsv2rgb(vec3(hue, sat, val));
+
+      vec2 pad = vec2(tris(seed * 34.0 + uTime * uSpeed / 10.0), tris(seed * 38.0 + uTime * uSpeed / 30.0)) - 0.5;
+
+      float star = Star(gv - offset - pad, flareSize);
+      vec3 color = base;
+
+      float twinkle = trisn(uTime * uSpeed + seed * 6.2831) * 0.5 + 1.0;
+      twinkle = mix(1.0, twinkle, uTwinkleIntensity);
+      star *= twinkle;
+
+      col += star * size * color;
+    }
+  }
+
+  return col;
+}
+
+void main() {
+  vec2 focalPx = uFocal * uResolution.xy;
+  vec2 uv = (vUv * uResolution.xy - focalPx) / uResolution.y;
+
+  vec2 mouseNorm = uMouse - vec2(0.5);
+
+  if (uAutoCenterRepulsion > 0.0) {
+    vec2 centerUV = vec2(0.0, 0.0); // Center in UV space
+    float centerDist = length(uv - centerUV);
+    vec2 repulsion = normalize(uv - centerUV) * (uAutoCenterRepulsion / (centerDist + 0.1));
+    uv += repulsion * 0.05;
+  } else if (uMouseRepulsion) {
+    vec2 mousePosUV = (uMouse * uResolution.xy - focalPx) / uResolution.y;
+    float mouseDist = length(uv - mousePosUV);
+    vec2 repulsion = normalize(uv - mousePosUV) * (uRepulsionStrength / (mouseDist + 0.1));
+    uv += repulsion * 0.05 * uMouseActiveFactor;
+  } else {
+    vec2 mouseOffset = mouseNorm * 0.1 * uMouseActiveFactor;
+    uv += mouseOffset;
+  }
+
+  float autoRotAngle = uTime * uRotationSpeed;
+  mat2 autoRot = mat2(cos(autoRotAngle), -sin(autoRotAngle), sin(autoRotAngle), cos(autoRotAngle));
+  uv = autoRot * uv;
+
+  uv = mat2(uRotation.x, -uRotation.y, uRotation.y, uRotation.x) * uv;
+
+  vec3 col = vec3(0.0);
+
+  for (float i = 0.0; i < 1.0; i += 1.0 / NUM_LAYER) {
+    float depth = fract(i + uStarSpeed * uSpeed);
+    float scale = mix(20.0 * uDensity, 0.5 * uDensity, depth);
+    float fade = depth * smoothstep(1.0, 0.9, depth);
+    col += StarLayer(uv * scale + i * 453.32) * fade;
+  }
+
+  if (uTransparent) {
+    float alpha = length(col);
+    alpha = smoothstep(0.0, 0.3, alpha); // Enhance contrast
+    alpha = min(alpha, 1.0); // Clamp to maximum 1.0
+    gl_FragColor = vec4(col, alpha);
+  } else {
+    gl_FragColor = vec4(col, 1.0);
+  }
+}
+`;
+
+interface GalaxyProps {
+  focal?: [number, number];
+  rotation?: [number, number];
+  starSpeed?: number;
+  density?: number;
+  hueShift?: number;
+  disableAnimation?: boolean;
+  speed?: number;
+  mouseInteraction?: boolean;
+  glowIntensity?: number;
+  saturation?: number;
+  mouseRepulsion?: boolean;
+  twinkleIntensity?: number;
+  rotationSpeed?: number;
+  repulsionStrength?: number;
+  autoCenterRepulsion?: number;
+  transparent?: boolean;
+  className?: string;
+}
+
+export default function Galaxy({
+  focal = [0.5, 0.5],
+  rotation = [1.0, 0.0],
+  starSpeed = 0.5,
+  density = 1,
+  hueShift = 140,
+  disableAnimation = false,
+  speed = 1.0,
+  mouseInteraction = true,
+  glowIntensity = 0.3,
+  saturation = 0.0,
+  mouseRepulsion = true,
+  repulsionStrength = 2,
+  twinkleIntensity = 0.3,
+  rotationSpeed = 0.1,
+  autoCenterRepulsion = 0,
+  transparent = true,
+  className = "",
+  ...rest
+}: GalaxyProps) {
+  const ctnDom = useRef<HTMLDivElement>(null);
+  const targetMousePos = useRef({ x: 0.5, y: 0.5 });
+  const smoothMousePos = useRef({ x: 0.5, y: 0.5 });
+  const targetMouseActive = useRef(0.0);
+  const smoothMouseActive = useRef(0.0);
+
+  useEffect(() => {
+    if (!ctnDom.current) return;
+    const ctn = ctnDom.current;
+    const renderer = new Renderer({
+      alpha: transparent,
+      premultipliedAlpha: false,
+    });
+    const gl = renderer.gl;
+
+    if (transparent) {
+      gl.enable(gl.BLEND);
+      gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
+      gl.clearColor(0, 0, 0, 0);
+    } else {
+      gl.clearColor(0, 0, 0, 1);
+    }
+
+    let program: Program;
+
+    function resize() {
+      const scale = 1;
+      renderer.setSize(ctn.offsetWidth * scale, ctn.offsetHeight * scale);
+      if (program) {
+        program.uniforms.uResolution.value = new Color(
+          gl.canvas.width,
+          gl.canvas.height,
+          gl.canvas.width / gl.canvas.height
+        );
+      }
+    }
+    window.addEventListener("resize", resize, false);
+    resize();
+
+    const geometry = new Triangle(gl);
+    program = new Program(gl, {
+      vertex: vertexShader,
+      fragment: fragmentShader,
+      uniforms: {
+        uTime: { value: 0 },
+        uResolution: {
+          value: new Color(
+            gl.canvas.width,
+            gl.canvas.height,
+            gl.canvas.width / gl.canvas.height
+          ),
+        },
+        uFocal: { value: new Float32Array(focal) },
+        uRotation: { value: new Float32Array(rotation) },
+        uStarSpeed: { value: starSpeed },
+        uDensity: { value: density },
+        uHueShift: { value: hueShift },
+        uSpeed: { value: speed },
+        uMouse: {
+          value: new Float32Array([
+            smoothMousePos.current.x,
+            smoothMousePos.current.y,
+          ]),
+        },
+        uGlowIntensity: { value: glowIntensity },
+        uSaturation: { value: saturation },
+        uMouseRepulsion: { value: mouseRepulsion },
+        uTwinkleIntensity: { value: twinkleIntensity },
+        uRotationSpeed: { value: rotationSpeed },
+        uRepulsionStrength: { value: repulsionStrength },
+        uMouseActiveFactor: { value: 0.0 },
+        uAutoCenterRepulsion: { value: autoCenterRepulsion },
+        uTransparent: { value: transparent },
+      },
+    });
+
+    const mesh = new Mesh(gl, { geometry, program });
+    let animateId: number;
+
+    function update(t: number) {
+      animateId = requestAnimationFrame(update);
+      if (!disableAnimation) {
+        program.uniforms.uTime.value = t * 0.001;
+        program.uniforms.uStarSpeed.value = (t * 0.001 * starSpeed) / 10.0;
+      }
+
+      const lerpFactor = 0.05;
+      smoothMousePos.current.x +=
+        (targetMousePos.current.x - smoothMousePos.current.x) * lerpFactor;
+      smoothMousePos.current.y +=
+        (targetMousePos.current.y - smoothMousePos.current.y) * lerpFactor;
+
+      smoothMouseActive.current +=
+        (targetMouseActive.current - smoothMouseActive.current) * lerpFactor;
+
+      program.uniforms.uMouse.value[0] = smoothMousePos.current.x;
+      program.uniforms.uMouse.value[1] = smoothMousePos.current.y;
+      program.uniforms.uMouseActiveFactor.value = smoothMouseActive.current;
+
+      renderer.render({ scene: mesh });
+    }
+    animateId = requestAnimationFrame(update);
+    ctn.appendChild(gl.canvas);
+
+    function handleMouseMove(e: MouseEvent) {
+      const rect = ctn.getBoundingClientRect();
+      const x = (e.clientX - rect.left) / rect.width;
+      const y = 1.0 - (e.clientY - rect.top) / rect.height;
+      targetMousePos.current = { x, y };
+      targetMouseActive.current = 1.0;
+    }
+
+    function handleMouseLeave() {
+      targetMouseActive.current = 0.0;
+    }
+
+    if (mouseInteraction) {
+      ctn.addEventListener("mousemove", handleMouseMove);
+      ctn.addEventListener("mouseleave", handleMouseLeave);
+    }
+
+    return () => {
+      cancelAnimationFrame(animateId);
+      window.removeEventListener("resize", resize);
+      if (mouseInteraction) {
+        ctn.removeEventListener("mousemove", handleMouseMove);
+        ctn.removeEventListener("mouseleave", handleMouseLeave);
+      }
+      ctn.removeChild(gl.canvas);
+      gl.getExtension("WEBGL_lose_context")?.loseContext();
+    };
+  }, [
+    focal,
+    rotation,
+    starSpeed,
+    density,
+    hueShift,
+    disableAnimation,
+    speed,
+    mouseInteraction,
+    glowIntensity,
+    saturation,
+    mouseRepulsion,
+    twinkleIntensity,
+    rotationSpeed,
+    repulsionStrength,
+    autoCenterRepulsion,
+    transparent,
+  ]);
+
+  return <div ref={ctnDom} className={`w-full h-full relative ${className}`} {...rest} />;
+}