artemuzz · April 17, 2021 18:10 · Apr 17, 2021
diff --git a/index.html b/index.html
@@ -0,0 +1,141 @@
+<script id="vertexShader" type="x-shader/x-vertex">
+  #include <fog_pars_vertex>
+
+uniform float uTime;
+
+uniform float uBigWavesElevation;
+uniform vec2 uBigWavesFrequency;
+uniform float uBigWaveSpeed;
+
+uniform  float uSmallWavesElevation;
+uniform  float uSmallWavesFrequency;
+uniform  float uSmallWavesSpeed;
+uniform float uSmallWavesIterations;
+
+varying float vElevation;
+
+//	Classic Perlin 3D Noise 
+//	by Stefan Gustavson
+//
+vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
+vec4 taylorInvSqrt(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}
+vec3 fade(vec3 t) {return t*t*t*(t*(t*6.0-15.0)+10.0);}
+
+float cnoise(vec3 P){
+  vec3 Pi0 = floor(P); // Integer part for indexing
+  vec3 Pi1 = Pi0 + vec3(1.0); // Integer part + 1
+  Pi0 = mod(Pi0, 289.0);
+  Pi1 = mod(Pi1, 289.0);
+  vec3 Pf0 = fract(P); // Fractional part for interpolation
+  vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0
+  vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x);
+  vec4 iy = vec4(Pi0.yy, Pi1.yy);
+  vec4 iz0 = Pi0.zzzz;
+  vec4 iz1 = Pi1.zzzz;
+
+  vec4 ixy = permute(permute(ix) + iy);
+  vec4 ixy0 = permute(ixy + iz0);
+  vec4 ixy1 = permute(ixy + iz1);
+
+  vec4 gx0 = ixy0 / 7.0;
+  vec4 gy0 = fract(floor(gx0) / 7.0) - 0.5;
+  gx0 = fract(gx0);
+  vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0);
+  vec4 sz0 = step(gz0, vec4(0.0));
+  gx0 -= sz0 * (step(0.0, gx0) - 0.5);
+  gy0 -= sz0 * (step(0.0, gy0) - 0.5);
+
+  vec4 gx1 = ixy1 / 7.0;
+  vec4 gy1 = fract(floor(gx1) / 7.0) - 0.5;
+  gx1 = fract(gx1);
+  vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1);
+  vec4 sz1 = step(gz1, vec4(0.0));
+  gx1 -= sz1 * (step(0.0, gx1) - 0.5);
+  gy1 -= sz1 * (step(0.0, gy1) - 0.5);
+
+  vec3 g000 = vec3(gx0.x,gy0.x,gz0.x);
+  vec3 g100 = vec3(gx0.y,gy0.y,gz0.y);
+  vec3 g010 = vec3(gx0.z,gy0.z,gz0.z);
+  vec3 g110 = vec3(gx0.w,gy0.w,gz0.w);
+  vec3 g001 = vec3(gx1.x,gy1.x,gz1.x);
+  vec3 g101 = vec3(gx1.y,gy1.y,gz1.y);
+  vec3 g011 = vec3(gx1.z,gy1.z,gz1.z);
+  vec3 g111 = vec3(gx1.w,gy1.w,gz1.w);
+
+  vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110)));
+  g000 *= norm0.x;
+  g010 *= norm0.y;
+  g100 *= norm0.z;
+  g110 *= norm0.w;
+  vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111)));
+  g001 *= norm1.x;
+  g011 *= norm1.y;
+  g101 *= norm1.z;
+  g111 *= norm1.w;
+
+  float n000 = dot(g000, Pf0);
+  float n100 = dot(g100, vec3(Pf1.x, Pf0.yz));
+  float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z));
+  float n110 = dot(g110, vec3(Pf1.xy, Pf0.z));
+  float n001 = dot(g001, vec3(Pf0.xy, Pf1.z));
+  float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z));
+  float n011 = dot(g011, vec3(Pf0.x, Pf1.yz));
+  float n111 = dot(g111, Pf1);
+
+  vec3 fade_xyz = fade(Pf0);
+  vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z);
+  vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y);
+  float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x); 
+  return 2.2 * n_xyz;
+}
+
+void main() {
+  #include <begin_vertex>
+  #include <project_vertex>
+  #include <fog_vertex>
+  vec4 modelPosition = modelMatrix * vec4(position, 1.0);
+  float elevation = 
+    sin(modelPosition.x * uBigWavesFrequency.x + uTime * uBigWaveSpeed) 
+    * sin(modelPosition.z * uBigWavesFrequency.y + uTime * uBigWaveSpeed) 
+    * uBigWavesElevation;
+
+  for(float i = 1.0; i <= 10.0; i++) {
+
+    elevation -= abs(
+      cnoise(
+        vec3(modelPosition.xz * uSmallWavesFrequency * i, uTime * uSmallWavesSpeed)
+        ) 
+        * uSmallWavesElevation / i
+      );
+     if(i >= uSmallWavesIterations ) {
+      break;
+    }
+  }
+
+  modelPosition.y += elevation;
+  vec4 viewPosition = viewMatrix * modelPosition;
+  vec4 projectedPosition = projectionMatrix * viewPosition;
+  gl_Position = projectedPosition;
+
+  vElevation = elevation;
+}
+</script>
+<script id="fragmentShader" type="x-shader/x-fragment">
+  #include <fog_pars_fragment>
+precision mediump float;
+uniform vec3 uDepthColor;
+uniform vec3 uSurfaceColor;
+
+uniform float uColorOffset;
+uniform float uColorMultiplier;
+
+varying float vElevation;
+
+void main() {
+  float mixStrength = (vElevation + uColorOffset) * uColorMultiplier;
+  vec3 color = mix(uDepthColor, uSurfaceColor, mixStrength);
+  gl_FragColor = vec4(color, 1.0);
+   #include <fog_fragment>
+}
+</script>
+<canvas class="webgl"></canvas>
diff --git a/script.babel b/script.babel
@@ -0,0 +1,233 @@
+/**
+ * Debug
+ */
+const gui = new dat.GUI({ closed: false, width: 340 });
+const bigWavesFolder = gui.addFolder("Large Waves");
+const smallWavesFolder = gui.addFolder("Small Waves");
+const colorFolder = gui.addFolder("Colors");
+const debugObject = {
+  waveDepthColor: "#1e4d40",
+  waveSurfaceColor: "#4d9aaa",
+  fogNear: 1,
+  fogFar: 3,
+  fogColor: "#8e99a2"
+};
+
+/**
+ * Base
+ */
+// Canvas
+const canvas = document.querySelector("canvas.webgl");
+
+// Scene
+const scene = new THREE.Scene();
+scene.fog = new THREE.Fog(
+  debugObject.fogColor,
+  debugObject.fogNear,
+  debugObject.fogFar
+);
+scene.background = new THREE.Color(debugObject.fogColor);
+
+/**
+ * Object
+ */
+const waterGeometry = new THREE.PlaneGeometry(12, 12, 512, 512);
+
+// Material
+const waterMaterial = new THREE.ShaderMaterial({
+  vertexShader: document.getElementById("vertexShader").textContent,
+  fragmentShader: document.getElementById("fragmentShader").textContent,
+  transparent: true,
+  fog: true,
+  uniforms: {
+    uTime: { value: 0 },
+    uMouse: { value: new THREE.Vector2() },
+    uBigWavesElevation: { value: 0.2 },
+    uBigWavesFrequency: { value: new THREE.Vector2(4, 2) },
+    uBigWaveSpeed: { value: 0.75 },
+    // Small Waves
+    uSmallWavesElevation: { value: 0.15 },
+    uSmallWavesFrequency: { value: 3 },
+    uSmallWavesSpeed: { value: 0.2 },
+    uSmallWavesIterations: { value: 4 },
+    // Color
+    uDepthColor: { value: new THREE.Color(debugObject.waveDepthColor) },
+    uSurfaceColor: { value: new THREE.Color(debugObject.waveSurfaceColor) },
+    uColorOffset: { value: 0.08 },
+    uColorMultiplier: { value: 5 },
+
+    // Fog, contains fogColor, fogDensity, fogFar and fogNear
+    ...THREE.UniformsLib["fog"]
+  }
+});
+
+const water = new THREE.Mesh(waterGeometry, waterMaterial);
+water.rotation.x = -Math.PI * 0.5;
+scene.add(water);
+
+/**
+ * Sizes
+ */
+const sizes = {
+  width: window.innerWidth,
+  height: window.innerHeight
+};
+
+window.addEventListener("resize", () => {
+  // Update sizes
+  sizes.width = window.innerWidth;
+  sizes.height = window.innerHeight;
+
+  // Update camera
+  camera.aspect = sizes.width / sizes.height;
+  camera.updateProjectionMatrix();
+
+  // Update renderer
+  renderer.setSize(sizes.width, sizes.height);
+  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
+});
+
+/**
+ * Camera
+ */
+
+// Base camera
+const camera = new THREE.PerspectiveCamera(
+  75,
+  sizes.width / sizes.height,
+  0.1,
+  100
+);
+camera.position.set(1, 1, 1);
+scene.add(camera);
+
+// Controls
+const controls = new THREE.OrbitControls(camera, canvas);
+controls.enableDamping = true;
+
+/**
+ * Renderer
+ */
+const renderer = new THREE.WebGLRenderer({
+  canvas: canvas
+});
+renderer.setSize(sizes.width, sizes.height);
+renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
+
+/**
+ * Add GUI
+ */
+// Big Waves
+bigWavesFolder
+  .add(waterMaterial.uniforms.uBigWavesElevation, "value")
+  .min(0)
+  .max(1)
+  .step(0.001)
+  .name("Elevation");
+bigWavesFolder
+  .add(waterMaterial.uniforms.uBigWavesFrequency.value, "x")
+  .min(0)
+  .max(10)
+  .step(0.001)
+  .name("Frequency X");
+bigWavesFolder
+  .add(waterMaterial.uniforms.uBigWavesFrequency.value, "y")
+  .min(0)
+  .max(10)
+  .step(0.001)
+  .name("Frequency Y");
+bigWavesFolder
+  .add(waterMaterial.uniforms.uBigWaveSpeed, "value")
+  .min(0.25)
+  .max(5)
+  .step(0.001)
+  .name("Speed");
+
+// Small Waves
+smallWavesFolder
+  .add(waterMaterial.uniforms.uSmallWavesElevation, "value")
+  .min(0.0)
+  .max(0.3)
+  .step(0.001)
+  .name("Elevation");
+smallWavesFolder
+  .add(waterMaterial.uniforms.uSmallWavesFrequency, "value")
+  .min(0)
+  .max(30)
+  .step(0.001)
+  .name("Frequency");
+smallWavesFolder
+  .add(waterMaterial.uniforms.uSmallWavesSpeed, "value")
+  .min(0.0)
+  .max(1)
+  .step(0.001)
+  .name("Speed");
+smallWavesFolder
+  .add(waterMaterial.uniforms.uSmallWavesIterations, "value")
+  .min(0)
+  .max(10)
+  .step(1)
+  .name("Iterations");
+
+// Colors
+colorFolder
+  .add(waterMaterial.uniforms.uColorOffset, "value")
+  .min(0)
+  .max(0.15)
+  .step(0.0001)
+  .name("Color Offset");
+colorFolder
+  .add(waterMaterial.uniforms.uColorMultiplier, "value")
+  .min(0.0)
+  .max(10.0)
+  .step(0.001)
+  .name("Color multiplier");
+colorFolder
+  .addColor(debugObject, "waveDepthColor")
+  .name("Wave depth color")
+  .onChange(() => {
+    waterMaterial.uniforms.uDepthColor.value.set(debugObject.waveDepthColor);
+  });
+colorFolder
+  .addColor(debugObject, "waveSurfaceColor")
+  .name("Wave surface color")
+  .onChange(() => {
+    waterMaterial.uniforms.uSurfaceColor.value.set(
+      debugObject.waveSurfaceColor
+    );
+  });
+colorFolder
+  .addColor(debugObject, "fogColor")
+  .name("Fog Color")
+  .onChange(() => {
+    waterMaterial.uniforms.fogColor.value.set(debugObject.fogColor);
+    scene.background.set(debugObject.fogColor);
+    scene.fog = new THREE.Fog(
+      debugObject.fogColor,
+      debugObject.fogNear,
+      debugObject.fogFar
+    );
+  });
+
+/**
+ * Animate
+ */
+const clock = new THREE.Clock();
+
+const tick = () => {
+  const elapsedTime = clock.getElapsedTime();
+
+  // Update controls
+  controls.update();
+
+  // Update time
+  waterMaterial.uniforms.uTime.value = elapsedTime;
+
+  // Render
+  renderer.render(scene, camera);
+
+  // Call tick again on the next frame
+  window.requestAnimationFrame(tick);
+};
+
+tick();
diff --git a/scripts b/scripts
@@ -0,0 +1,3 @@
+<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r125/three.min.js"></script>
+<script src="https://unpkg.com/[email protected]/examples/js/controls/OrbitControls.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.7/dat.gui.min.js"></script>
diff --git a/style.scss b/style.scss
@@ -0,0 +1,16 @@
+* {
+  margin: 0;
+  padding: 0;
+}
+
+html,
+body {
+  overflow: hidden;
+}
+
+.webgl {
+  position: fixed;
+  top: 0;
+  left: 0;
+  outline: none;
+}
diff --git a/the-raging-sea.markdown b/the-raging-sea.markdown
@@ -0,0 +1,7 @@
+The Raging Sea
+--------------
+Learned in Bruno Simon's fantastic Three.js course: https://threejs-journey.xyz/. Added some fog for the fun of it
+
+A [Pen](https://codepen.io/arte_muzz/pen/c4fe0b98fac5f6fd752ad408297e3929) by [Monica](https://codepen.io/arte_muzz) on [CodePen](https://codepen.io).
+
+[License](https://codepen.io/arte_muzz/pen/c4fe0b98fac5f6fd752ad408297e3929/license).