add controls

package-lock.json

@@ -11,7 +11,9 @@
         "three": "^0.147.0"
       },
       "devDependencies": {
+        "@types/dat.gui": "^0.7.9",
         "@types/three": "^0.146.0",
+        "dat.gui": "^0.7.9",
         "typescript": "^4.6.4",
         "vite": "^3.2.3",
         "vite-plugin-plain-text": "^1.2.1"
@@ -281,6 +283,12 @@
         "node": ">= 10"
       }
     },
+    "node_modules/@types/dat.gui": {
+      "version": "0.7.9",
+      "resolved": "https://registry.npmjs.org/@types/dat.gui/-/dat.gui-0.7.9.tgz",
+      "integrity": "sha512-UiqZasQIask5cUwWOO6BgOjP1dNj9ChYtmeAb4WTKs5IJ7ha3ATRTeXY7/TzlmEZznh40lS6Ov5BdNA+tU+fWQ==",
+      "dev": true
+    },
     "node_modules/@types/three": {
       "version": "0.146.0",
       "resolved": "https://registry.npmjs.org/@types/three/-/three-0.146.0.tgz",
@@ -296,6 +304,12 @@
       "integrity": "sha512-IUMDPSXnYIbEO2IereEFcgcqfDREOgmbGqtrMpVPpACTU6pltYLwHgVkrnYv0XhWEcjio9sYEfIEzgn3c7nDqA==",
       "dev": true
     },
+    "node_modules/dat.gui": {
+      "version": "0.7.9",
+      "resolved": "https://registry.npmjs.org/dat.gui/-/dat.gui-0.7.9.tgz",
+      "integrity": "sha512-sCNc1OHobc+Erc1HqiswYgHdVNpSJUlk/Hz8vzOCsER7rl+oF/4+v8GXFUyCgtXpoCX6+bnmg07DedLvBLwYKQ==",
+      "dev": true
+    },
     "node_modules/esbuild": {
       "version": "0.15.18",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.15.18.tgz",
@@ -1002,6 +1016,12 @@
       "dev": true,
       "optional": true
     },
+    "@types/dat.gui": {
+      "version": "0.7.9",
+      "resolved": "https://registry.npmjs.org/@types/dat.gui/-/dat.gui-0.7.9.tgz",
+      "integrity": "sha512-UiqZasQIask5cUwWOO6BgOjP1dNj9ChYtmeAb4WTKs5IJ7ha3ATRTeXY7/TzlmEZznh40lS6Ov5BdNA+tU+fWQ==",
+      "dev": true
+    },
     "@types/three": {
       "version": "0.146.0",
       "resolved": "https://registry.npmjs.org/@types/three/-/three-0.146.0.tgz",
@@ -1017,6 +1037,12 @@
       "integrity": "sha512-IUMDPSXnYIbEO2IereEFcgcqfDREOgmbGqtrMpVPpACTU6pltYLwHgVkrnYv0XhWEcjio9sYEfIEzgn3c7nDqA==",
       "dev": true
     },
+    "dat.gui": {
+      "version": "0.7.9",
+      "resolved": "https://registry.npmjs.org/dat.gui/-/dat.gui-0.7.9.tgz",
+      "integrity": "sha512-sCNc1OHobc+Erc1HqiswYgHdVNpSJUlk/Hz8vzOCsER7rl+oF/4+v8GXFUyCgtXpoCX6+bnmg07DedLvBLwYKQ==",
+      "dev": true
+    },
     "esbuild": {
       "version": "0.15.18",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.15.18.tgz",

package.json

@@ -9,7 +9,9 @@
     "preview": "vite preview"
   },
   "devDependencies": {
+    "@types/dat.gui": "^0.7.9",
     "@types/three": "^0.146.0",
+    "dat.gui": "^0.7.9",
     "typescript": "^4.6.4",
     "vite": "^3.2.3",
     "vite-plugin-plain-text": "^1.2.1"

src/atmosphere.ts

@@ -5,6 +5,7 @@ import {
   Object3D,
   ShaderMaterial,
   SphereGeometry,
+  Vector3,
 } from 'three';
 
 import { plainText as vertexShader } from './shaders/atmosphere.vert';
@@ -17,7 +18,7 @@ export class Atmosphere extends Object3D {
   public Scale = 1;
   public ScaleDepth = 0.25;
   public G = -0.95;
-  public Wavelength = [0.65, 0.57, 0.475];
+  public Wavelength = new Vector3(0.65, 0.57, 0.475);
 
   public geom?: SphereGeometry;
   public mesh?: Mesh;
@@ -35,12 +36,30 @@ export class Atmosphere extends Object3D {
     this.initialize();
   }
 
+  set planetRadius(radius: number) {
+    const thickness = this.thickness;
+    this.innerRadius = radius;
+    this.outerRadius = radius + thickness;
+    this.refreshScale();
+  }
+  get planetRadius() {
+    return this.innerRadius;
+  }
+
+  set thickness(thickness: number) {
+    this.outerRadius = thickness + this.innerRadius;
+    this.refreshScale();
+  }
+  get thickness() {
+    return this.outerRadius - this.innerRadius;
+  }
+
   setUniforms(shader: ShaderMaterial) {
     shader.uniforms.invWavelength = {
       value: [
-        1 / Math.pow(this.Wavelength[0], 4),
-        1 / Math.pow(this.Wavelength[1], 4),
-        1 / Math.pow(this.Wavelength[2], 4),
+        1 / Math.pow(this.Wavelength.x, 4),
+        1 / Math.pow(this.Wavelength.y, 4),
+        1 / Math.pow(this.Wavelength.z, 4),
       ],
     };
     shader.uniforms.outerRadius = { value: this.outerRadius };
@@ -60,8 +79,18 @@ export class Atmosphere extends Object3D {
   }
 
   initialize() {
+    if (this.geom) {
+      this.geom.dispose();
+      this.mesh && this.remove(this.mesh);
+    }
     this.geom = new SphereGeometry(this.outerRadius, 128, 128);
     this.mesh = new Mesh(this.geom, this.shader);
     this.add(this.mesh);
   }
+
+  private refreshScale() {
+    this.Scale = 1 / (this.outerRadius - this.innerRadius);
+    this.setUniforms(this.shader);
+    this.initialize();
+  }
 }

src/globe.ts

@@ -7,6 +7,7 @@ import {
   Color,
   DirectionalLight,
   ShaderMaterial,
+  MeshPhongMaterial,
 } from 'three';
 
 import { plainText as vertexShader } from './shaders/earth.vert';
@@ -14,15 +15,31 @@ import { plainText as fragmentShader } from './shaders/earth.frag';
 import { Atmosphere } from './atmosphere';
 
 export class Globe extends Object3D {
-  private sphere = new SphereGeometry(1, 128, 128);
-  private atmosphere = new Atmosphere(1, 1.05);
-  private earthMaterial?: ShaderMaterial;
+  private sphere?: SphereGeometry;
+  private clouds = new SphereGeometry(1.02, 64, 64);
+  public atmosphere = new Atmosphere(1, 1.05);
+  public earthMaterial?: ShaderMaterial;
   public earthMesh?: Mesh;
+
   private loader = new TextureLoader();
 
+  constructor(private planetRadius: number) {
+    super();
+  }
+
+  set radius(radius: number) {
+    this.planetRadius = radius;
+    this.atmosphere.planetRadius = radius;
+    this.earthMaterial && this.atmosphere.setUniforms(this.earthMaterial);
+    this.createMesh();
+  }
+  get radius() {
+    return this.planetRadius;
+  }
+
   public async loadTexture(name: string) {
     return new Promise<Texture>((resolve, reject) => {
-      this.loader.load(`/${name}`, resolve, undefined, reject);
+      this.loader.load(`./${name}`, resolve, undefined, reject);
     });
   }
 
@@ -55,10 +72,19 @@ export class Globe extends Object3D {
 
     this.atmosphere.setUniforms(this.earthMaterial);
     this.atmosphere.setLight(light);
-    this.earthMesh = new Mesh(this.sphere, this.earthMaterial);
-    this.add(this.earthMesh);
+    this.createMesh();
     this.add(this.atmosphere);
   }
 
   public tick() {}
+
+  private createMesh() {
+    if (this.sphere) {
+      this.sphere.dispose();
+      this.earthMesh && this.remove(this.earthMesh);
+    }
+    this.sphere = new SphereGeometry(this.planetRadius, 128, 128);
+    this.earthMesh = new Mesh(this.sphere, this.earthMaterial);
+    this.add(this.earthMesh);
+  }
 }

src/main.ts

@@ -3,6 +3,7 @@ import { Renderer } from './renderer';
 import { DirectionalLight } from 'three';
 import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';
 import './style.css';
+import { GUI } from 'dat.gui';
 
 const main = new Renderer();
 
@@ -10,7 +11,7 @@ const dirLight = new DirectionalLight(0xffffff, 1);
 dirLight.position.set(10, 10, 10);
 main.scene.add(dirLight);
 
-const globe = new Globe();
+const globe = new Globe(1);
 main.resize();
 globe.initialize(dirLight).catch(console.error);
 main.scene.add(globe);
@@ -19,6 +20,58 @@ main.camera.position.set(0, 0, 2);
 
 const control = new OrbitControls(main.camera, main.canvas);
 
+const gui = new GUI();
+const atmosGui = gui.addFolder('Atmosphere');
+const updateAtmosShader = () => {
+  globe.atmosphere.setUniforms(globe.atmosphere.shader);
+  globe.atmosphere.setUniforms(globe.earthMaterial!);
+};
+// any's because for some reason the generic expects a string indexed record
+atmosGui
+  .add<any>(globe.atmosphere.Wavelength, 'x', 0, 1)
+  .name('R')
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere.Wavelength, 'y', 0, 1)
+  .name('G')
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere.Wavelength, 'z', 0, 1)
+  .name('B')
+  .onChange(updateAtmosShader);
+
+atmosGui
+  .add<any>(globe.atmosphere, 'thickness', 0.001, 0.5)
+  .name('Thickness')
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere, 'ScaleDepth', 0.01, 1)
+  .name('Scale depth')
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere, 'Rayleigh', 0.0001, 0.01)
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere, 'Mie', 0.0001, 0.01)
+  .onChange(updateAtmosShader);
+atmosGui
+  .add<any>(globe.atmosphere, 'Exposure', 0, 100)
+  .onChange(updateAtmosShader);
+atmosGui.open();
+
+const planetGui = gui.addFolder('Planet');
+planetGui
+  .add<any>(globe.rotation, 'x', -Math.PI * 2, Math.PI * 2, 0.01)
+  .name('Rotation X');
+planetGui
+  .add<any>(globe.rotation, 'y', -Math.PI * 2, Math.PI * 2, 0.01)
+  .name('Rotation Y');
+planetGui
+  .add<any>(globe.rotation, 'z', -Math.PI * 2, Math.PI * 2, 0.01)
+  .name('Rotation Z');
+// planetGui.add<any>(globe, 'radius', 1, 100).name('Radius');
+planetGui.open();
+
 function tick() {
   requestAnimationFrame(tick);
   control.update();

src/shaders/earth.vert

@@ -1,10 +1,16 @@
 #define EARTH
+#include <common>
+#include <normal_pars_vertex>
+
 varying vec3 vViewPosition;
 varying vec3 vLightDirection;
 varying vec2 vUv;
 varying vec3 vEyeNormal;
-#include <common>
-#include <normal_pars_vertex>
+
+varying vec3 v3Direction;
+varying vec3 c0;
+varying vec3 c1;
+
 uniform vec3 light;
 
 uniform vec3 invWavelength;  // 1 / pow(wavelength, 4) for the red, green, and blue channels
@@ -19,10 +25,6 @@ uniform float scaleDepth;    // The scale depth (i.e. the altitude at which the
 const int nSamples = 2;
 const float fSamples = 1.0;
 
-varying vec3 v3Direction;
-varying vec3 c0;
-varying vec3 c1;
-
 float dscale(float fCos) {
   float x = 1.0 - fCos;
   return scaleDepth * exp(-0.00287 + x * (0.459 + x * (3.83 + x * (-6.80 + x * 5.25))));

vite.config.js

@@ -3,4 +3,5 @@ import plainText from 'vite-plugin-plain-text';
 
 export default defineConfig({
   plugins: [plainText.default(/\.vert|\.frag$/)],
+  base: '',
 });