Initial commit
This commit is contained in:
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GPG Key ID:
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# top-most EditorConfig file
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root = true
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# Unix-style newlines with a newline ending every file
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[*]
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end_of_line = lf
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insert_final_newline = true
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# Matches multiple files with brace expansion notation
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||||
# Set default charset
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||||
[*.js]
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charset = utf-8
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indent_style = space
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indent_size = 2
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/node_modules/
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/dist/
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/package-lock.json
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/**/dna.txt
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*.db
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*.sqlite3
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<!DOCTYPE html>
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<html>
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||||
<head>
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<title>qplanets demo</title>
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<script type="text/javascript" src="./node_modules/three/build/three.js"></script>
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||||
<script type="text/javascript" src="./node_modules/three/examples/js/controls/OrbitControls.js"></script>
|
||||
<script type="text/javascript" src="./lib/qplanets.js"></script>
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||||
<style type="text/css">body{margin:0;}</style>
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||||
</head>
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||||
<body>
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||||
<script type="text/javascript">
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/* global THREE, requestAnimationFrame */
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(function () {
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var scene = new THREE.Scene()
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var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 10000)
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var renderer = new THREE.WebGLRenderer()
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renderer.setSize(window.innerWidth, window.innerHeight)
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var controls = new THREE.OrbitControls(camera, renderer.domElement)
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document.body.appendChild(renderer.domElement)
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var atmosphereSize = 25
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var light = { position: new THREE.Vector3(0, 100, 10) }
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var planetgen = new THREE.Extras.Planet.PlanetGenerator(1000)
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var planet = new THREE.Extras.Planet.CubePlanet(new THREE.Vector3(0, 0, 0), planetgen)
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var attnShader = THREE.Extras.Planet.ScatterShader.newAttenuate(planet.radius, planet.radius + atmosphereSize)
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attnShader.uniforms.color = { value: new THREE.Color(0x001100), type: 'v3' }
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attnShader.uniforms.planetPosition = { value: planet.position, type: 'v3' }
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attnShader.uniforms.lightDirection = { value: light.position.sub(planet.position).normalize(), type: 'v3' }
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attnShader.wireframe = true
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planet.setMaterial(attnShader)
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scene.add(planet)
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var atmosGeom = new THREE.SphereGeometry(planet.radius + atmosphereSize, 100, 100)
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var atmosShader = THREE.Extras.Planet.ScatterShader.newAtmosphere(planet.radius, planet.radius + atmosphereSize)
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var atmos = new THREE.Mesh(atmosGeom, atmosShader)
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atmosShader.uniforms.planetPosition = { value: planet.position, type: 'v3' }
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atmosShader.uniforms.lightDirection = { value: light.position.sub(planet.position).normalize(), type: 'v3' }
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scene.add(atmos)
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camera.position.x = -100
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camera.position.z = 1800
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|
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function animate () {
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requestAnimationFrame(animate)
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||||
planet.update(camera)
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||||
controls.update()
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||||
renderer.render(scene, camera)
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||||
}
|
||||
animate()
|
||||
})()
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||||
</script>
|
||||
</body>
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||||
</html>
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File diff suppressed because one or more lines are too long
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{
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||||
"name": "qplanets.js",
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||||
"version": "0.0.1",
|
||||
"description": "THREE.js extension for procedural planets",
|
||||
"scripts": {
|
||||
"test": "echo \"Error: no test specified\" && exit 1",
|
||||
"build": "webpack -p",
|
||||
"watch": "webpack -w --mode=development"
|
||||
},
|
||||
"keywords": [],
|
||||
"private": true,
|
||||
"author": "Evert \"Diamond\" Prants <evert@lunasqu.ee>",
|
||||
"license": "MIT",
|
||||
"devDependencies": {
|
||||
"express": "^4.16.4",
|
||||
"standard": "^14.3.3",
|
||||
"three": "^0.116.1",
|
||||
"webpack": "^4.26.0",
|
||||
"webpack-command": "^0.5.0"
|
||||
}
|
||||
}
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|
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const ATMOSPHERE = {
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vertexUniforms: `
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#define M_PI 3.1415926535897932384626433832795
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uniform vec3 planetPosition; // Position of the planet
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uniform vec3 lightDirection; // The direction vector to the light source
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uniform vec3 invWavelength; // 1 / pow(wavelength, 4) for the red, green, and blue channels
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uniform float outerRadius; // The outer (atmosphere) radius
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uniform float innerRadius; // The inner (planetary) radius
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uniform float ESun; // ESun
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uniform float Km; // Km
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uniform float Kr; // Kr
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uniform float scale; // 1 / (outerRadius - innerRadius)
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uniform float scaleDepth; // The scale depth (i.e. the altitude at which the atmosphere's average density is found)
|
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|
||||
const int nSamples = 2;
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const float fSamples = 1.0;
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|
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varying vec3 v3Direction;
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||||
varying vec3 c0;
|
||||
varying vec3 c1;
|
||||
`,
|
||||
vertexFunctions: `
|
||||
float dscale(float fCos) {
|
||||
float x = 1.0 - fCos;
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||||
return scaleDepth * exp(-0.00287 + x * (0.459 + x * (3.83 + x * (-6.80 + x * 5.25))));
|
||||
}
|
||||
|
||||
float calculateNearScatter(vec3 v3CameraPosition, vec3 v3Ray, float fCameraHeight, float fOuterRadius) {
|
||||
float B = 2.0 * dot(v3CameraPosition, v3Ray);
|
||||
float C = pow(fCameraHeight, 2.0) - pow(fOuterRadius, 2.0);
|
||||
float fDet = max(0.0, B * B - 4.0 * C);
|
||||
return 0.5 * (-B - sqrt(fDet));
|
||||
}
|
||||
`,
|
||||
vertexAtmosphere: `
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||||
void main(void) {
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// Initialize variables
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float cameraHeight = length(planetPosition - cameraPosition);
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float KmESun = Km * ESun;
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float KrESun = Kr * ESun;
|
||||
float Kr4PI = Kr * 4.0 * M_PI;
|
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float Km4PI = Km * 4.0 * M_PI;
|
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float scaleOverScaleDepth = scale / scaleDepth;
|
||||
|
||||
// Get the ray from the camera to the vertex and its length (which is the far point of the ray passing through the atmosphere)
|
||||
vec3 v3Ray = position - cameraPosition;
|
||||
float fFar = length(v3Ray);
|
||||
v3Ray /= fFar;
|
||||
|
||||
vec3 v3Start;
|
||||
float fStartAngle;
|
||||
float fStartDepth;
|
||||
float fStartOffset;
|
||||
|
||||
if (cameraHeight > outerRadius) {
|
||||
// Sky from space
|
||||
// Calculate the closest intersection of the ray with the outer atmosphere (which is the near point of the ray passing through the atmosphere)
|
||||
float fNear = calculateNearScatter(cameraPosition, v3Ray, cameraHeight, outerRadius);
|
||||
|
||||
// Calculate the ray's starting position, then calculate its scattering offset
|
||||
v3Start = cameraPosition + v3Ray * fNear;
|
||||
fFar -= fNear;
|
||||
fStartAngle = dot(v3Ray, v3Start) / outerRadius;
|
||||
fStartDepth = exp(-1.0 / scaleDepth);
|
||||
fStartOffset = fStartDepth * dscale(fStartAngle);
|
||||
} else {
|
||||
// Sky from within the atmosphere
|
||||
v3Start = cameraPosition;
|
||||
fStartDepth = exp(scaleOverScaleDepth * (innerRadius - cameraHeight));
|
||||
fStartAngle = dot(v3Ray, v3Start) / length(v3Start);
|
||||
fStartOffset = fStartDepth * dscale(fStartAngle);
|
||||
}
|
||||
|
||||
// Initialize the scattering loop variables
|
||||
float fSampleLength = fFar / fSamples;
|
||||
float scaledLength = fSampleLength * scale;
|
||||
vec3 v3SampleRay = v3Ray * fSampleLength;
|
||||
vec3 v3SamplePoint = v3Start + v3SampleRay * 0.5;
|
||||
|
||||
// Now loop through the sample rays
|
||||
vec3 v3FrontColor = vec3(0.0, 0.0, 0.0);
|
||||
for(int i=0; i<nSamples; i++)
|
||||
{
|
||||
float fHeight = length(v3SamplePoint);
|
||||
float fDepth = exp(scaleOverScaleDepth * (innerRadius - fHeight));
|
||||
float fLightAngle = dot(lightDirection, v3SamplePoint) / fHeight;
|
||||
float fCameraAngle = dot(v3Ray, v3SamplePoint) / fHeight;
|
||||
float fScatter = (fStartOffset + fDepth * (dscale(fLightAngle) - dscale(fCameraAngle)));
|
||||
vec3 v3Attenuate = exp(-fScatter * (invWavelength * Kr4PI + Km4PI));
|
||||
v3FrontColor += v3Attenuate * (fDepth * scaledLength);
|
||||
v3SamplePoint += v3SampleRay;
|
||||
}
|
||||
|
||||
// Finally, scale the Mie and Rayleigh colors and set up the varying variables for the pixel shader
|
||||
gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(position, 1);
|
||||
c0 = v3FrontColor * (invWavelength * KrESun);
|
||||
c1 = v3FrontColor * KmESun;
|
||||
v3Direction = cameraPosition - position;
|
||||
}
|
||||
`,
|
||||
vertexGround: `
|
||||
void main(void) {
|
||||
// Initialize variables
|
||||
float cameraHeight = length(planetPosition - cameraPosition);
|
||||
float KmESun = Km * ESun;
|
||||
float KrESun = Kr * ESun;
|
||||
float Kr4PI = Kr * 4.0 * M_PI;
|
||||
float Km4PI = Km * 4.0 * M_PI;
|
||||
float scaleOverScaleDepth = scale / scaleDepth;
|
||||
|
||||
// Get the ray from the camera to the vertex and its length (which is the far point of the ray passing through the atmosphere)
|
||||
vec3 v3Ray = position - cameraPosition;
|
||||
float fFar = length(v3Ray);
|
||||
v3Ray /= fFar;
|
||||
|
||||
// Calculate the closest intersection of the ray with the outer atmosphere (which is the near point of the ray passing through the atmosphere)
|
||||
float fNear = calculateNearScatter(cameraPosition, v3Ray, cameraHeight, outerRadius);
|
||||
|
||||
// Calculate the ray's starting position, then calculate its scattering offset
|
||||
vec3 v3Start = cameraPosition + v3Ray * fNear;
|
||||
fFar -= fNear;
|
||||
float fDepth = exp((innerRadius - outerRadius) / scaleDepth);
|
||||
float fCameraAngle = dot(-v3Ray, position) / length(position);
|
||||
float fLightAngle = dot(lightDirection, position) / length(position);
|
||||
|
||||
float fCameraScale = dscale(fCameraAngle);
|
||||
float fLightScale = dscale(fLightAngle);
|
||||
float fCameraOffset = fDepth*fCameraScale;
|
||||
float fTemp = (fLightScale + fCameraScale);
|
||||
|
||||
// Initialize the scattering loop variables
|
||||
float fSampleLength = fFar / fSamples;
|
||||
float fScaledLength = fSampleLength * scale;
|
||||
vec3 v3SampleRay = v3Ray * fSampleLength;
|
||||
vec3 v3SamplePoint = v3Start + v3SampleRay * 0.5;
|
||||
|
||||
// Now loop through the sample rays
|
||||
vec3 v3FrontColor = vec3(0.0, 0.0, 0.0);
|
||||
vec3 v3Attenuate;
|
||||
for(int i=0; i<nSamples; i++)
|
||||
{
|
||||
float fHeight = length(v3SamplePoint);
|
||||
float fDepth = exp(scaleOverScaleDepth * (innerRadius - fHeight));
|
||||
float fScatter = fDepth*fTemp - fCameraOffset;
|
||||
v3Attenuate = exp(-fScatter * (invWavelength * Kr4PI + Km4PI));
|
||||
v3FrontColor += v3Attenuate * (fDepth * fScaledLength);
|
||||
v3SamplePoint += v3SampleRay;
|
||||
}
|
||||
|
||||
// Calculate the attenuation factor for the ground
|
||||
c0 = v3Attenuate;
|
||||
c1 = v3FrontColor * (invWavelength * KrESun + KmESun);
|
||||
|
||||
gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(position,1);
|
||||
}
|
||||
`,
|
||||
fragmentAtmosphere: `
|
||||
uniform vec3 lightDirection;
|
||||
uniform float g;
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||||
|
||||
varying vec3 v3Direction;
|
||||
varying vec3 c0;
|
||||
varying vec3 c1;
|
||||
|
||||
// Calculates the Mie phase function
|
||||
float getMiePhase(float fCos, float fCos2, float g, float g2){
|
||||
return 1.5 * ((1.0 - g2) / (2.0 + g2)) * (1.0 + fCos2) / pow(1.0 + g2 - 2.0 * g * fCos, 1.5);
|
||||
}
|
||||
|
||||
// Calculates the Rayleigh phase function
|
||||
float getRayleighPhase(float fCos2) {
|
||||
// return 0.75 + 0.75 * fCos2;
|
||||
return 0.75 * (2.0 + 0.5 * fCos2);
|
||||
}
|
||||
|
||||
void main (void) {
|
||||
float fCos = dot(lightDirection, v3Direction) / length(v3Direction);
|
||||
float fCos2 = fCos * fCos;
|
||||
vec3 color = getRayleighPhase(fCos2) * c0 +
|
||||
getMiePhase(fCos, fCos2, g, pow(g, 2.0)) * c1;
|
||||
gl_FragColor = vec4(color, 1.0);
|
||||
gl_FragColor.a = gl_FragColor.b;
|
||||
}
|
||||
`,
|
||||
fragmentGround: `
|
||||
uniform vec3 color;
|
||||
|
||||
varying vec3 c0;
|
||||
varying vec3 c1;
|
||||
|
||||
void main (void) {
|
||||
gl_FragColor = vec4(c1, 1.0) + vec4(color * c0, 1.0);
|
||||
}
|
||||
`
|
||||
}
|
||||
|
||||
module.exports = ATMOSPHERE
|
||||
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@ -0,0 +1,281 @@
|
|||
/* global THREE */
|
||||
|
||||
const CubePlanetRes = 15
|
||||
const blankGeom = new THREE.BufferGeometry()
|
||||
|
||||
class PlanetGenerator {
|
||||
constructor (radius) {
|
||||
this.radius = radius
|
||||
}
|
||||
|
||||
getHeight (v) {
|
||||
return 0
|
||||
}
|
||||
|
||||
getBiome (v) {
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
class CubePlanetIndexBuffer {
|
||||
constructor (fanTop = false, fanRight = false, fanLeft = false, fanBottom = false) {
|
||||
const indices = []
|
||||
for (let y = 0; y < CubePlanetRes - 1; y++) {
|
||||
let slantLeft = (y % 2) === 0
|
||||
for (let x = 0; x < CubePlanetRes - 1; x++) {
|
||||
const topLeft = (y * CubePlanetRes) + x
|
||||
const topRight = topLeft + 1
|
||||
const bottomLeft = ((y + 1) * CubePlanetRes) + x
|
||||
const bottomRight = bottomLeft + 1
|
||||
|
||||
let tri1 = slantLeft ? [topLeft, bottomLeft, bottomRight] : [topLeft, bottomLeft, topRight]
|
||||
let tri2 = slantLeft ? [topLeft, bottomRight, topRight] : [bottomLeft, bottomRight, topRight]
|
||||
|
||||
if (fanTop && y === 0) {
|
||||
if (x % 2 === 0) {
|
||||
tri2 = [topLeft, bottomRight, topRight + 1]
|
||||
} else {
|
||||
tri1 = null
|
||||
}
|
||||
}
|
||||
|
||||
if (fanRight && x === CubePlanetRes - 2) {
|
||||
if (y % 2 === 0) {
|
||||
tri2 = [topRight, bottomLeft, bottomRight + CubePlanetRes]
|
||||
} else {
|
||||
tri2 = null
|
||||
}
|
||||
}
|
||||
|
||||
if (fanBottom && y === CubePlanetRes - 2) {
|
||||
if (x % 2 === 0) {
|
||||
tri2 = [bottomLeft, bottomRight + 1, topRight]
|
||||
} else {
|
||||
tri1 = null
|
||||
}
|
||||
}
|
||||
|
||||
if (fanLeft && x === 0) {
|
||||
if (y % 2 === 0) {
|
||||
tri1 = [topLeft, bottomLeft + CubePlanetRes, bottomRight]
|
||||
} else {
|
||||
tri1 = null
|
||||
}
|
||||
}
|
||||
|
||||
// faster than concat :p
|
||||
if (tri1) indices.push(tri1[0], tri1[1], tri1[2])
|
||||
if (tri2) indices.push(tri2[0], tri2[1], tri2[2])
|
||||
|
||||
slantLeft = !slantLeft
|
||||
}
|
||||
}
|
||||
this.length = indices.length
|
||||
this.indices = new THREE.Uint16BufferAttribute(indices, 1)
|
||||
}
|
||||
}
|
||||
|
||||
const CubePlanetIndexBuffers = {
|
||||
base: new CubePlanetIndexBuffer(),
|
||||
fixT: new CubePlanetIndexBuffer(true, false, false, false),
|
||||
fixTR: new CubePlanetIndexBuffer(true, true, false, false),
|
||||
fixTL: new CubePlanetIndexBuffer(true, false, true, false),
|
||||
fixB: new CubePlanetIndexBuffer(false, false, false, true),
|
||||
fixBR: new CubePlanetIndexBuffer(false, true, false, true),
|
||||
fixBL: new CubePlanetIndexBuffer(false, false, true, true),
|
||||
fixR: new CubePlanetIndexBuffer(false, true, false, false),
|
||||
fixL: new CubePlanetIndexBuffer(false, false, true, false)
|
||||
}
|
||||
|
||||
class CubePlanetBufferGeometry extends THREE.BufferGeometry {
|
||||
constructor (fnode) {
|
||||
super()
|
||||
|
||||
const vertices = []
|
||||
const normals = []
|
||||
const uvs = []
|
||||
|
||||
const radius = fnode.root.generator.radius
|
||||
const divisionLevel = Math.pow(2, fnode.level)
|
||||
|
||||
for (let i = 0, vertexPointer = 0; i < CubePlanetRes; i++) {
|
||||
for (let j = 0; j < CubePlanetRes; j++, vertexPointer++) {
|
||||
// Vertex index (0 - 1)
|
||||
const iindex = i / (CubePlanetRes - 1)
|
||||
const jindex = j / (CubePlanetRes - 1)
|
||||
|
||||
// From the left and forward vectors, we can calculate an oriented vertex
|
||||
const iv = fnode.left.clone().multiplyScalar(iindex).multiplyScalar(radius).divideScalar(divisionLevel)
|
||||
const jv = fnode.forward.clone().multiplyScalar(jindex).multiplyScalar(radius).divideScalar(divisionLevel)
|
||||
|
||||
// Add the scaled left and forward to the centered origin
|
||||
const vertex = fnode.relPos.clone().add(iv.add(jv))
|
||||
|
||||
// Normalize and multiply by radius to create a spherical mesh
|
||||
const normal = vertex.normalize()
|
||||
const pointHeight = fnode.root.generator.getHeight(normal)
|
||||
const pos = normal.clone().multiplyScalar(pointHeight * 10 + radius)
|
||||
|
||||
// const pointBiome = fnode.root.generator.getBiome(pointHeight, normal)
|
||||
|
||||
vertices[vertexPointer * 3] = pos.x
|
||||
vertices[vertexPointer * 3 + 1] = pos.y
|
||||
vertices[vertexPointer * 3 + 2] = pos.z
|
||||
normals[vertexPointer * 3] = normal.x
|
||||
normals[vertexPointer * 3 + 1] = normal.y
|
||||
normals[vertexPointer * 3 + 2] = normal.z
|
||||
uvs[vertexPointer * 2] = i * (1 / CubePlanetRes)
|
||||
uvs[vertexPointer * 2 + 1] = j * (1 / CubePlanetRes)
|
||||
|
||||
if (i === Math.floor(CubePlanetRes / 2) && j === Math.floor(CubePlanetRes / 2)) {
|
||||
fnode.center = pos
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
this.setIndex(CubePlanetIndexBuffers.base.indices)
|
||||
this.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3))
|
||||
this.setAttribute('normal', new THREE.Float32BufferAttribute(normals, 3))
|
||||
this.setAttribute('uv', new THREE.Float32BufferAttribute(uvs, 3))
|
||||
}
|
||||
}
|
||||
|
||||
class CubePlanetNode extends THREE.Mesh {
|
||||
constructor (root, index, level, position, normal) {
|
||||
super()
|
||||
|
||||
this.root = root
|
||||
|
||||
this.index = index
|
||||
this.level = level
|
||||
|
||||
this.relPos = position
|
||||
this.normal = normal
|
||||
|
||||
this.left = new THREE.Vector3(normal.y, normal.z, normal.x)
|
||||
this.forward = normal.clone().cross(this.left)
|
||||
|
||||
if (level === 0) {
|
||||
this.relPos.sub(this.left.clone().multiplyScalar(root.generator.radius / 2))
|
||||
this.relPos.sub(this.forward.clone().multiplyScalar(root.generator.radius / 2))
|
||||
}
|
||||
|
||||
if (root.material) this.material = root.material
|
||||
|
||||
this.generated = false
|
||||
this.generate()
|
||||
}
|
||||
|
||||
generate () {
|
||||
if (this.generated) return
|
||||
this.geometry = new CubePlanetBufferGeometry(this)
|
||||
this.generated = true
|
||||
}
|
||||
|
||||
isLeaf () {
|
||||
return !this.children.length
|
||||
}
|
||||
|
||||
merge () {
|
||||
if (this.isLeaf()) return
|
||||
|
||||
for (const i in this.children) {
|
||||
const ch = this.children[i]
|
||||
|
||||
ch.merge()
|
||||
ch.dispose()
|
||||
}
|
||||
|
||||
this.children = []
|
||||
this.generate()
|
||||
}
|
||||
|
||||
subdivide () {
|
||||
if (this.level === (this.root.generator.maxLOD || 8)) return
|
||||
|
||||
const lv = this.level + 1
|
||||
const stepLeft = this.left.clone().multiplyScalar(this.root.generator.radius / Math.pow(2, lv))
|
||||
const stepForward = this.forward.clone().multiplyScalar(this.root.generator.radius / Math.pow(2, lv))
|
||||
|
||||
// Top left corner
|
||||
this.add(new CubePlanetNode(this.root, 0, lv, this.relPos.clone(), this.normal))
|
||||
// Top right corner
|
||||
this.add(new CubePlanetNode(this.root, 1, lv, this.relPos.clone().add(stepForward), this.normal))
|
||||
// Bottom right corner
|
||||
this.add(new CubePlanetNode(this.root, 2, lv, this.relPos.clone().add(stepLeft.clone().add(stepForward)), this.normal))
|
||||
// Bottom left corner
|
||||
this.add(new CubePlanetNode(this.root, 3, lv, this.relPos.clone().add(stepLeft), this.normal))
|
||||
|
||||
this.dispose()
|
||||
}
|
||||
|
||||
dispose () {
|
||||
if (!this.generated) return
|
||||
this.geometry.dispose()
|
||||
this.geometry = blankGeom
|
||||
this.generated = false
|
||||
}
|
||||
|
||||
setMaterial (mat) {
|
||||
this.material = mat
|
||||
for (const i in this.children) {
|
||||
this.children[i].setMaterial(mat)
|
||||
}
|
||||
}
|
||||
|
||||
update (camera, dt) {
|
||||
if (!this.center) return
|
||||
const camToOrigin = camera.position.clone().distanceTo(this.center)
|
||||
const divisionLevel = Math.pow(2, this.level)
|
||||
const splitDistance = this.root.generator.radius / divisionLevel
|
||||
|
||||
if (camToOrigin < splitDistance * 5 && this.children.length === 0) {
|
||||
this.subdivide()
|
||||
return
|
||||
} else if (camToOrigin > splitDistance * 5.5 && this.children.length > 0) {
|
||||
this.merge()
|
||||
return
|
||||
}
|
||||
|
||||
if (this.children.length > 0) {
|
||||
for (const i in this.children) {
|
||||
this.children[i].update(camera, dt)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
class CubePlanet extends THREE.Object3D {
|
||||
constructor (origin, generator) {
|
||||
super()
|
||||
this.position.copy(origin)
|
||||
this.generator = generator
|
||||
|
||||
this.radius = generator.radius
|
||||
const hs = generator.radius / 2
|
||||
|
||||
this.add(new CubePlanetNode(this, 0, 0, new THREE.Vector3(0, 0, -hs), new THREE.Vector3(0, 0, -1)))
|
||||
this.add(new CubePlanetNode(this, 1, 0, new THREE.Vector3(0, 0, hs), new THREE.Vector3(0, 0, 1)))
|
||||
|
||||
this.add(new CubePlanetNode(this, 2, 0, new THREE.Vector3(-hs, 0, 0), new THREE.Vector3(-1, 0, 0)))
|
||||
this.add(new CubePlanetNode(this, 3, 0, new THREE.Vector3(hs, 0, 0), new THREE.Vector3(1, 0, 0)))
|
||||
|
||||
this.add(new CubePlanetNode(this, 4, 0, new THREE.Vector3(0, hs, 0), new THREE.Vector3(0, 1, 0)))
|
||||
this.add(new CubePlanetNode(this, 5, 0, new THREE.Vector3(0, -hs, 0), new THREE.Vector3(0, -1, 0)))
|
||||
}
|
||||
|
||||
update (camera, dt) {
|
||||
for (const i in this.children) {
|
||||
this.children[i].update(camera, dt)
|
||||
}
|
||||
}
|
||||
|
||||
setMaterial (mat) {
|
||||
this.material = mat
|
||||
for (const i in this.children) {
|
||||
this.children[i].setMaterial(mat)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = { PlanetGenerator, CubePlanet, CubePlanetNode }
|
||||
|
|
@ -0,0 +1,72 @@
|
|||
/* global THREE */
|
||||
|
||||
THREE.Extras = THREE.Extras || {}
|
||||
THREE.Extras.Planet = {}
|
||||
|
||||
const atmosShader = require('./builtin/atmosphere.glsl.js')
|
||||
const cubePlanet = require('./cubeplanet.js')
|
||||
|
||||
class ScatterShader {
|
||||
static _compose (iR, oR, vS, fS, p) {
|
||||
const st = new THREE.ShaderMaterial({
|
||||
uniforms: {},
|
||||
vertexShader: vS,
|
||||
fragmentShader: fS
|
||||
})
|
||||
ScatterShader.scatterUniforms(st, iR, oR, p)
|
||||
return st
|
||||
}
|
||||
|
||||
static newAtmosphere (innerRadius, outerRadius, params) {
|
||||
const st = ScatterShader._compose(
|
||||
innerRadius,
|
||||
outerRadius,
|
||||
atmosShader.vertexUniforms + atmosShader.vertexFunctions + atmosShader.vertexAtmosphere,
|
||||
atmosShader.fragmentAtmosphere,
|
||||
params
|
||||
)
|
||||
st.side = THREE.BackSide
|
||||
st.transparent = true
|
||||
return st
|
||||
}
|
||||
|
||||
static newAttenuate (innerRadius, outerRadius, params) {
|
||||
return ScatterShader._compose(
|
||||
innerRadius,
|
||||
outerRadius,
|
||||
atmosShader.vertexUniforms + atmosShader.vertexFunctions + atmosShader.vertexGround,
|
||||
atmosShader.fragmentGround,
|
||||
params
|
||||
)
|
||||
}
|
||||
|
||||
static scatterUniforms (shader, innerRadius, outerRadius, custom = {}) {
|
||||
const Kr = custom.Kr || 0.0025
|
||||
const Km = custom.Km || 0.0015
|
||||
const ESun = custom.ESun || 15.0
|
||||
const Scale = custom.scale || (1 / (outerRadius - innerRadius))
|
||||
const ScaleDepth = custom.scaleDepth || 0.25
|
||||
const G = custom.g || -0.950
|
||||
const Wavelength = custom.wavelength || [0.650, 0.570, 0.475]
|
||||
|
||||
shader.uniforms.invWavelength = {
|
||||
value: [1 / Math.pow(Wavelength[0], 4), 1 / Math.pow(Wavelength[1], 4), 1 / Math.pow(Wavelength[2], 4)],
|
||||
type: 'v3'
|
||||
}
|
||||
shader.uniforms.outerRadius = { value: outerRadius, type: 'f' }
|
||||
shader.uniforms.innerRadius = { value: innerRadius, type: 'f' }
|
||||
shader.uniforms.Kr = { value: Kr, type: 'f' }
|
||||
shader.uniforms.Km = { value: Km, type: 'f' }
|
||||
shader.uniforms.ESun = { value: ESun, type: 'f' }
|
||||
shader.uniforms.scale = { value: Scale, type: 'f' }
|
||||
shader.uniforms.scaleDepth = { value: ScaleDepth, type: 'f' }
|
||||
shader.uniforms.g = { value: G, type: 'f' }
|
||||
}
|
||||
}
|
||||
|
||||
for (const o in cubePlanet) {
|
||||
THREE.Extras.Planet[o] = cubePlanet[o]
|
||||
}
|
||||
|
||||
THREE.Extras.Planet.ScatterShader = ScatterShader
|
||||
module.exports = THREE.Extras.Planet
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
const path = require('path')
|
||||
|
||||
module.exports = (env) => {
|
||||
return {
|
||||
entry: './src/index.js',
|
||||
output: {
|
||||
path: path.resolve(__dirname, 'lib'),
|
||||
filename: 'qplanets.js'
|
||||
},
|
||||
module: {},
|
||||
devtool: env.mode === 'development' ? 'inline-source-map' : ''
|
||||
}
|
||||
}
|
||||
Reference in New Issue