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gaia-web-starfield.html
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gaia-web-starfield.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>GAIA-Web 3D Starfield v0.5</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="three.js/main.css">
<style>
body {
background-color: #ccc;
color: #000;
}
a {
color: #f00;
}
#statusline {
position: absolute;
left: 0px;
bottom: 0px;
width: auto;
height: auto;
color: greenyellow;
background-color: rgba(0,0,0,0.4);
display: flex;
flex-direction: row;
justify-content: left;
/* align-items: center; */
text-align: left;
margin: 0;
padding: 5px;
line-height: 100%;
font-size: 12px;
/* cursor: pointer; */
border: 1px solid green;
}
#blocker {
position: absolute;
width: 100%;
height: 100%;
color: white;
background-color: rgba(0,0,0,0.05);
}
#instructions {
width: 100%;
height: 100%;
display: flex;
flex-direction: column;
justify-content: left;
align-items: left;
line-height: 100%;
text-align: left;
font-size: 12px;
padding: 5px;
cursor: pointer;
border: 3px solid white;
}
</style>
</head>
<body>
<div id="blocker">
<div id="instructions">
<p style="font-size:16px">
<pre>
Welcome to Gaia-web, where you can fly through the
stars like the USS Enterprise 🚀
Where pressing 'space' finally gets you into space 😉
Please be patient as star data is loaded in the background.
Click on the starfield to capture WASD keys to star moving around,
and ESC to uncapture and return the cursor.
</pre>
</p>
<p> Keyboard shortcuts: <br/>
Move: WASDQE<br/>
Warp: Space<br/>
Look: Mouse<br/>
Tour start/pause: T<br/>
Tour next object: N<br/>
Tour prev object: P<br/>
Back to Sol: B<br/>
aXis on/off: X<br>
Milky Way view: M (select a 10000+ ly dataset first)<br>
Pause data loading & rendering: Z<br>
sLow down starship: L<br>
Galactic overview: G<br/>
Right Mouse click: Zoom in/out<br>
</p>
</div>
</div>
<pre id="statusline"></pre>
<!--
Planet Earth/Sol/Origin: P<br/>
Reload all star data for galactic overview: L<br/>
Reload all star data for Sol neighbourhood:Planet Earth/Sol/Origin: N<br/>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - trackball controls<br />
MOVE mouse & press LEFT/A: rotate, MIDDLE/S: zoom, RIGHT/D: pan
</div>
<script type="text/javascript" src="./stars-test-01.js"></script>
<script async src="https://unpkg.com/es-module-shims@1.6.3/dist/es-module-shims.js"></script>
-->
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="./libs/es-module-shims.js"></script>
<script src="./libs/tween.umd.js"></script>
<script type="importmap">
{
"imports": {
"three": "./three.js/build/three.module.js",
"three/addons/": "./three.js/jsm/",
"local-data/": "./data/"
}
}
</script>
<script type="x-shader/x-vertex" id="vertexshader">
attribute float size;
attribute vec3 customColor;
varying vec3 vColor;
void main() {
vColor = customColor;
vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
//gl_PointSize = size * ( 600.0 / -mvPosition.z );
//gl_PointSize = size * ( 300.0 / -mvPosition.z);
/*
So there will exist some formulae that will mimic the appearance
of nearby stars vs the cloudy appearance of a the myriad
of milky way stars. Is it related to the size of rods
in the eye?
*/
/*
// Attempt 1
// Ok but milky way a bit overpowering
gl_PointSize = size * pow(( 200.0 / -mvPosition.z), 1.3);
if ( gl_PointSize < 4.0) gl_PointSize = 4.0;
*/
/*
// Attempt 2: The one to beat. Distant cloudy patches visible while
// nearby stars are nice and bright
// still dims out stars too quick i think where they
// become brighter again once further in the distance?!
gl_PointSize = size * pow(( 200.0 / -mvPosition.z), 1.5);
// if ( (gl_PointSize > 1.0) && (gl_PointSize < 3.0)) gl_PointSize = 3.0;
if ( gl_PointSize < 7.0) {
//vColor = vColor * (0.5 + gl_PointSize / 14.0);
//vColor = vColor * 0.9;
gl_PointSize = 3.5 + gl_PointSize / 2.0;
}
*/
/*
// Attempt
//
gl_PointSize = size * pow(( 200.0 / -mvPosition.z), 1.3);
if ( (gl_PointSize > 1.0) && (gl_PointSize < 3.0)) gl_PointSize = 3.0;
if ( gl_PointSize < 1.0) gl_PointSize = 1.0;
*/
// gl_PointSize = size * pow(( 200.0 / -mvPosition.z), 1.5);
gl_PointSize = size * 500. / -mvPosition.z;
// if ( (gl_PointSize > 1.0) && (gl_PointSize < 3.0)) gl_PointSize = 3.0;
if ( gl_PointSize < (size * 3.)) {
//vColor = vColor * (0.5 + gl_PointSize / 14.0);
// dim but not too much
if ( gl_PointSize / 10. < 0.05) vColor = vColor * 0.05;
else vColor = vColor * gl_PointSize / 10.;
//gl_PointSize = size * 3.;
gl_PointSize = size * 3. * (1. - -mvPosition.z/20000.);
}
/*
if ( gl_PointSize < 6.0) {
//vColor = vColor * (0.5 + gl_PointSize / 14.0);
//vColor = vColor * 0.9;
gl_PointSize = 3.0 + gl_PointSize / 2.0;
}
*/
gl_Position = projectionMatrix * mvPosition;
}
</script>
<script type="x-shader/x-fragment" id="fragmentshader">
uniform vec3 color;
uniform sampler2D pointTexture;
varying vec3 vColor;
void main() {
gl_FragColor = vec4( color * vColor, 1.0 );
gl_FragColor = gl_FragColor * texture2D( pointTexture, gl_PointCoord );
if ( gl_FragColor.a < 0.4 ) discard;
}
</script>
<!-- The main index of all sky patch elements, which basically based on this file:
http://cdn.gea.esac.esa.int/Gaia/gdr3/gaia_source/_MD5SUM.txt
-->
<script sync type="text/javascript" src="data/gaia-web-data-sets-index.js"></script>
<script sync type="text/javascript" src="data/wp-open-clusters.js"></script>
<script sync type="text/javascript" src="data/star-labels.js"></script>
<script sync type="text/javascript" src="data/nebula-data.js"></script>
<script sync type="text/javascript" src="data/hip_resolved_named_stars.js"></script>
<script sync type="text/javascript" src="data/hip_resolved_labels.js"></script>
<script sync type="text/javascript" src="data/grand_gaia_source_objects_names.js"></script>
<script sync type="text/javascript" src="data/simbad_gaia_dr3_but_no_hip_names.js"></script>
<script type="module">
// Uhm yeah the HTML ain't gonna dictate our indentation. Who does it think it is!?!?
import * as THREE from 'three';
// THREE.Object3D.DefaultUp.set(0, 0, 1);
import Stats from 'three/addons/libs/stats.module.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { FontLoader } from 'three/addons/loaders/FontLoader.js';
// import { TrackballControls } from 'three/addons/controls/TrackballControls.js';
import { PointerLockControls } from 'three/addons/controls/PointerLockControls.js';
// Courtesy of: https://codepen.io/hootstheowl/pen/xOQVQg
// class CubeWebGL {
// constructor(props = {}) {
// Object.assign(this, {
// // set variable settings
// container: props.container || document.body,
// fps: props.fps || 30,
// theta: props.theta || 0.1,
// radius: props.radius || 600,
// opacity: props.opacity || 0.2,
// count: props.count || 150,
// palette: props.palette || null,
// // containers for ThreeJS animation
// then: Date.now(),
// camera: null,
// scene: null,
// renderer: null,
// });
// // // let's go!
// // this.init();
// // this.animate();
// // document.addEventListener(
// // 'mousedown', this.getIntersect.bind(this), false
// // );
// }
// getIntersect(e) {
// const raycaster = new THREE.Raycaster();
// const mouse = new THREE.Vector3();
// mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
// mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
// // update the picking ray with the camera and mouse position
// raycaster.setFromCamera( mouse, this.camera );
// // calculate objects intersecting the picking ray
// const intersects = raycaster.intersectObjects( this.scene.children );
// console.log(intersects)
// }
// addCube() {
// const { palette, opacity } = this;
// if (Array.isArray(palette)) {
// const cubeColor = palette[Math.floor(
// Math.random() * palette.length
// )];
// }
// const cube = new THREE.Mesh(
// new THREE.BoxGeometry(2.5, 2.5, 2.5),
// new THREE.MeshBasicMaterial({
// color: Math.random() * 0x808008 + 0x808080,
// transparent: true,
// opacity,
// })
// );
// cube.position.x = this.generatePosition();
// cube.position.y = this.generatePosition();
// cube.position.z = this.generatePosition();
// cube.scale.x= cube.scale.y = cube.scale.z = Math.random() * 45;
// this.scene.add(cube);
// }
// var menu = {
// data_set = 'star_density': '',
// prev_data_set = 'star_density',
// vely: 0,
// camera: {
// speed: 0.0001
// },
// stop: function() {
// this.velx = 0;
// this.vely = 0;
// },
// reset: function() {
// this.velx = 0.1;
// this.vely = 0.1;
// camera.position.z = 75;
// camera.position.x = 0;
// camera.position.y = 0;
// cube.scale.x = 1;
// cube.scale.y = 1;
// cube.scale.z = 1;
// cube.material.wireframe = true;
// }
// };
let data_set = 'px80_2000ly_15mag'
let prev_data_set = data_set
// let prev_data_set = 'star_density'
let data_set_type = ''
let data_set_xyz_multiplier = 100
let moveForward = false;
let moveBackward = false;
let moveLeft = false;
let moveRight = false;
let moveUp = false;
let moveDown = false;
let canJump = false;
let warp_speed = 1;
let warp_enabled = false;
let global_sizeAttenuation = true;
let global_sizeAttenuation_multiplier = 1;
let axes_added = false;
let default_camera_fov = 60
let DEG2RAD = Math.PI / 180
let global_render_load_pause = false;
let axesHelper = new THREE.AxesHelper( 100 );
let we_want_axes = true;
let slow_down_cowboy = false;
let earth_hyades_milkyway_bg = icrs_to_threejs( [101, 160, 62])
let stars_filter = 'da_hood';
// let stars_filter = 'galactic';
let prev_stars_filter = ''; // Set to empty to force reload @ reload_all_stars() call
let nebulae_basedir = '../gaia-web-data/nebulae';
let nebula_being_loaded = false;
let nebula_loading = 0;
let nebula_loaded = 0;
let tour_active = false;
let tour_speed = 0;
let tour_target_arrived = false;
let tour_time_at_target = 0;
let tour_prev_update = 0;
let tour_orbit_radius_default = 25; //ly
let old_tour_targets = [
/*
[ 62, 130, 50, 'Hyades'],
[ 222, 336, 178, 'Messier 45, Pleiades'],
[ -366, 434, 203, 'Messier 44, Beehive Cluster'],
[ -213, 438, -385, 'NGC 2451 A'],
[ -200, 68, -442, 'IC 2602, Southern Pleiades'],
[ -18.6,-746.4,-517.6, 'Messier 7'],
[ 125, 1219, -130, 'Trapezium Cluster?'],
[ 135, 1260, -115, 'Trapezium Cluster 2?'],
[ 489, 730, 553, 'IC 348'], // <- is this really something?
[ -784, 194, -1333, 'NGC 3532, Wishing Well Cluster '],
[ -108, -1263, -800, 'Messier 6, Butterfly Cluster'],
[ 907, 779, 1102, 'Messier 34'],
[ -2176.2, -4843.8, -2653.4, 'Messier 4' ],
*/
[ -406, 838, -731, 'NGC 2451 B'],
// [ , , , ''],
[ 515, 340, 1055, '?'],
[ 144.4, 1113.5, 53.8, '?'],
[ -266.2, 1239.2,1100.6, '?' ],
[ 260, -1525, 148, '?' ],
[ -628, -1429, -1341, '?' ],
[ 3618.0, 2559.1, 6839.6, 'NGC 884 / NGC 869' ],
[ 141, 4179, 2670, 'Messier 37'],
[ 3792, -40, 5780, 'NGC 7789, White Rose Cluster'],
[ -302, -1940, -2330, 'IC 4651'],
[ -1710, 3209, -2895, 'Behind NGC 2451 A/B?'],
[ -1875, 2023, 576, 'Messier 67'],
[ 407, 2954, 2144, 'Messier 38'],
/*
[ , , , ''],
[ , , , ''],
[ , , , ''],
[ , , , ''],
[ ],
*/
];
let tour_targets = wp_open_clusters
tour_targets = nebula_data.concat( tour_targets)
let label_font;
let labels_loaded = false;
let label_meshes = [];
let tour_orbit_angle = 0;
let tour_orbit_dec = 0;
let tour_orbit_start_x;
let tour_orbit_start_y;
let tour_orbit_start_z;
let tour_orbit_insertion_distance;
let tour_orbit_insertion_speed;
let tour_orbit_target;
let tour_started = false;
let tour_stops = [];
let tour_target_index = 0;
let tour_busy = false;
let tour_object_panning = true;
let tour_name = 'open clusters';
let tour_target_name = '';
let stop_tween = false;
let clock = new THREE.Clock();
let delta = 0;
// 60 fps
let interval = 1 / 60;
// let tour_target_name = '';
let prevTime = performance.now();
const velocity = new THREE.Vector3();
const direction = new THREE.Vector3();
const vertex = new THREE.Vector3();
const camera_vector = new THREE.Vector3();
const color = new THREE.Color();
let initial_scene_reloaded = false;
var spinner = ['-', '\\', '|', '/']
let statusline = 'Data being loaded, please wait...'
let available_elements = []
for (var i = 0; i < 100; i++) available_elements.push( i);
const sprite = new THREE.TextureLoader().load( 'three.js/textures/sprites/disc.png' );
let camera, perspectiveCamera, orthographicCamera, controls, scene, renderer, stats;
const params = {
orthographicCamera: false,
'option 1': false,
'option 2': true
};
const frustumSize = 400;
var star_max_dist = 10**5;
var star_max_dist = 10**3;
var all_stars = {};
var rendered_sky_elements = [];
var total_stars_in_scene = 0;
var total_cubes_in_scene = 0;
var loading_lock = false;
var speed = 0
var speed_multiplier = 10.0 // 5.0
var lightyear_p_parsec = 3.261563777
init();
animate();
function icrs_to_threejs( c, reverse = false) {
/*
Three.js and other GL implementations use a convention of
Y = up, Z = back/forward
While ICRS cartesian would be:
Z = up, X = back/forward
Hence we need to transform ICRS <-> Three.js coords throughout.
What fun and opportunity for bugs to creep in, groan :'(
Further info:
https://gkjohnson.github.io/threejs-sandbox/basis-transform/
Z
|
|
.----- Y
/
X
Needs to become and vice verse:
Y
|
|
.----- X
/
Z
*/
var transposed = []
if (reverse) transposed = [ c[2], c[0], c[1] ];
else transposed = [ c[1], c[2], c[0] ];
// console.log( c, transposed)
return transposed;
}
function add_nebulae_to_scene( scene, nebulae_data) {
// console.log('Entering nebulae....')
nebula_being_loaded = true;
// return 0
var nebula_targets = []
var method = 2
if (method == 2) {
// console.log('brick wall')
// MeshPhongMaterial needs light, else it will be black
// scene.add(new THREE.AmbientLight(0xAAAAAA))
var ni = 0;
for ( ni = 0; ni < nebulae_data.length; ni++) {
var n = nebulae_data[ni]
var x = n[0]
var y = n[1]
var z = n[2]
var name = n[3]
var size = n[4]
var rotation = n[5]
var dirname = n[6]
nebula_targets.push( [x, y, z, name, size])
// let neb_map = new THREE.TextureLoader().load(`nebulae/${dirname}/in.jpg`);
let neb_map = new THREE.TextureLoader().load(`${nebulae_basedir}/${dirname}/out.jpg`);
let neb_dmap = new THREE.TextureLoader().load(`${nebulae_basedir}/${dirname}/dmap.jpg`);
let neb_amap = new THREE.TextureLoader().load(`${nebulae_basedir}/${dirname}/amap.jpg`);
let neb_bmap = new THREE.TextureLoader().load(`${nebulae_basedir}/${dirname}/bmap.jpg`);
var displacement_opacity_array = [
// [ 25, -1, 0.1, neb_bmap ],
// [ 15, -2, 0.5, neb_bmap ],
// // [ 10, -2, 0.5, neb_bmap ],
// [ 5, -2, 0.2, neb_bmap ],
[ 0, 0, 1, neb_bmap],
[ -25 * size / 100, 0, 1, neb_bmap ], // Perhaps bmap as we don't know the shape of the back of the nebula with any certainty
[ 25 * size / 100, 0, 1, neb_map ],
// [ -25, 1, 0.2 ],
// [ -15, 2, 0.1 ],
]
for (var di = 0; di < displacement_opacity_array.length; di++) {
var d = displacement_opacity_array[di]
// for (var di = 0; di < 100; di++) {
// var d = [
// 100 - di, 0, di / 100, neb_map
// ]
let neb_material = new THREE.MeshPhongMaterial({
// color: 0xffff00,
side: THREE.DoubleSide,
// bumpMap: bmap,
// bumpScale: 1.3,
displacementMap: neb_dmap,
displacementScale: d[0],
displacementBias: d[1],
opacity: d[2],
map: d[3],
transparent: true,
// shading: THREE.SmoothShading,
alphaMap: neb_amap,
depthTest: false,
// alphaTest: 0.05,
reflectivity: 0,
});
// console.log( neb_map.naturalWidth, neb_map.naturalHeight );
const neb_geometry = new THREE.PlaneGeometry( size, size, 1000, 1000 );
const neb_plane = new THREE.Mesh( neb_geometry, neb_material );
// planea.translate( 100, 30, 30)
// var pos = icrs_to_threejs( [ -100, 50, 50])
// neb_plane.rotation.z = rotation * DEG2RAD
// var pos = icrs_to_threejs( [x, y, z])
// neb_plane.position.x = 0
// neb_plane.position.y = 0
// neb_plane.position.z = -10
var pos = icrs_to_threejs( [x, y, z])
neb_plane.position.x = pos[0]
neb_plane.position.y = pos[1]
neb_plane.position.z = pos[2]
// neb_plane.rotation = rotation
neb_plane.lookAt( new THREE.Vector3( 0, 0, 0))
// neb_plane.rotation.z = ( Math.PI / 4)
// neb_plane.position.x = 100
// neb_plane.position.y = 0
// neb_plane.position.z = 0
// neb_plane.lookAt(150, 100, 50);
var axis = new THREE.Vector3(0, 0, 1);
neb_plane.rotateOnAxis(axis, -rotation * DEG2RAD);
// neb_plane.lookAt( new THREE.Vector3( 0, 0, 0))
// neb_plane.rotateY( Math.PI / 4)
// neb_plane.rotateZ( Math.PI / 4)
// var axis = new THREE.Vector3( pos[0], pos[1], pos[2] );
// var deg = 43;
// var angle = deg * (Math.PI / 180);
// neb_geometry.applyAxisAngle( axis, angle );
// geometry.lookAt( new THREE.Vector3( -100, -30, -30))
scene.add( neb_plane );
}
}
// add_labels_to_scene( scene, nebula_targets)
}
// console.log('Exiting nebula...DEBUG555')
nebula_being_loaded = false;
return
if (method == 0) {
// The old
// let map = new THREE.TextureLoader().load("nebulae/i2qvMyMDQfwWCzBFn8wPF6.jpg");
let map = new THREE.TextureLoader().load("nebulae/i2qvMyMDQfwWCzBFn8wPF6.jpg");
let bmap = new THREE.TextureLoader().load("nebulae/i2qvMyMDQfwWCzBFn8wPF6.jpg");
let dmap = new THREE.TextureLoader().load("nebulae/out.jpg");
// let amap = new THREE.TextureLoader().load("nebulae/alpha.jpg");
let amap = new THREE.TextureLoader().load("nebulae/alpha.jpg");
let amaterial = new THREE.MeshPhongMaterial({
// color: 0xffff00,
side: THREE.DoubleSide,
bumpMap: bmap,
bumpScale: 1.3,
displacementMap: dmap,
displacementBias: 2,
displacementScale: -15,
transparent: true,
alphaMap: amap,
depthTest: false,
// alphaTest: 0.05,
reflectivity: 0,
opacity: 0.2,
map: map
});
let bmaterial = new THREE.MeshPhongMaterial({
// color: 0xffff00,
side: THREE.DoubleSide,
bumpMap: bmap,
bumpScale: 1.3,
displacementMap: dmap,
displacementBias: -2,
displacementScale: 15,
transparent: true,
alphaMap: amap,
depthTest: false,
// alphaTest: 0.05,
reflectivity: 0,
map: map
});
const geometry = new THREE.PlaneGeometry( 100, 100, 200, 200 );
// const geometry = new THREE.PlaneGeometry( 100, 100, 1000, 1000 );
const material = new THREE.MeshBasicMaterial({
color: 0xffff00,
side: THREE.DoubleSide
} );
// geometry.translate( 100, 30, 30)
const planea = new THREE.Mesh( geometry, amaterial );
// planea.translate( 100, 30, 30)
planea.position.x = 100
planea.position.y = 50
planea.position.z = 50
planea.lookAt( new THREE.Vector3( 0, 0, 0))
// geometry.lookAt( new THREE.Vector3( -100, -30, -30))
scene.add( planea );
const planeb = new THREE.Mesh( geometry, bmaterial );
planeb.position.x = 100
planeb.position.y = 50
planeb.position.z = 50
planeb.lookAt( new THREE.Vector3( 0, 0, 0))
scene.add( planeb );
// Here we'll try using mesh with displacement maps.
// let map = new THREE.TextureLoader().load("nebulae/out.png");
// let map = new THREE.TextureLoader().load("nebulae/i2qvMyMDQfwWCzBFn8wPF6.jpg");
// let ageometry = new THREE.PlaneGeometry( 400, 450, 50, 50);
// // let ageometry = new THREE.PlaneGeometry( 4000, 4500, 500, 500);
// // geometry.position.x = 0
// // geometry.position.y = 0
// // geometry.position.z = 0
// let brickWall = new THREE.Mesh(ageometry,amaterial);
// scene.add(brickWall);
// var points = new THREE.Points( ageometry, amaterial );
// scene.add( points );
}
if (method == 1) {
// This method generates sprites for each image coordinate, and adds depth based on the brightness of the RGB components. It works but needs lots of tweaking still
var canvas = document.createElement("canvas");
var pic = new Image();
pic.src = 'nebulae/out.png';
pic.onload = function() {
canvas.width = pic.width;
canvas.height = pic.height;
var ctx = canvas.getContext("2d");
ctx.drawImage(pic, 0, 0);
var c = canvas.getContext('2d');
var p = c.getImageData(107, 107, 1, 1).data;
var hex = "RGB = " + p[0]+", "+p[1]+", "+p[2];
console.log( 'colors: ', p, hex)
var p = c.getImageData( 80, 80, 1, 1).data;
var hex = "RGB = " + p[0]+", "+p[1]+", "+p[2];
console.log( 'colors: ', p, hex)
// Transform image to cubes
var pixel
var c;
var x, y, z;
var actually_added = 0;
var stars_geometry = new THREE.BufferGeometry();
// var amount = cube_data.length
// const positions = new Float32Array( );
// const colors = new Float32Array( );
// const sizes = new Float32Array( );
const positions = [];
const colors = [];
const sizes = [];
for (var y = 1; y < pic.height; y++) {
for (var z = 1; z < pic.width; z++) {
pixel = c.getImageData( z, y, 1, 1).data;
/*
Yeah cubes without shader language optimization is not the way forward
i.e. displaying a few hundred cubes slows it all down to a crawl.
It's not impossible, see here:
https://codepen.io/zadvorsky/pen/mwqQaJ
But will require much more study.
*/
/*
var cube = new THREE.Mesh(
new THREE.BoxGeometry( 1, 1, 1),
new THREE.MeshBasicMaterial({
// color: Math.random() * 0x0000FF, // + 0x000080,
color: 0x0000FF,
// color: 0x8888AA,
transparent: true,
// opacity: Math.random() * 0.1,
opacity: 0.1,
})
);
cube.position.x = 50
cube.position.y = 50 + pic.height - y
cube.position.z = 100 + z
// cube.material.opacity = 0.3
// cube.material.color = Math.random() * 0x000080 + 0x606080,
// cube.material.color = new THREE.Color()
cube.material.opacity = 0.3; // * (x+y+z)/30
// var hex = "RGB = " + p[0]+", "+p[1]+", "+p[2];
pixel = c.getImageData( z, y, 1, 1).data;
cube.material.color.setRGB( pixel[0] / 256, pixel[1] / 256, pixel[2] / 256) // + 0x000080,
// cube.scale.x= cube.scale.y = cube.scale.z = Math.random();
// console.log('cube: ', cube)
scene.add(cube);
*/
x = 50
positions.push(x)
positions.push(pic.height - y)
positions.push(z)
colors.push( pixel[0] / 256)
colors.push( pixel[1] / 256)
colors.push( pixel[2] / 256)
sizes.push( 15)
// Add depth cubes/pixels
// var depth = parseInt( 0.25 * pic.width * (pixel[0] + pixel[1] + pixel[2]) / (256 * 3))
// Depth based on pixel value
// var depth = parseInt( 0.5 * pic.width * (pixel[0] + pixel[1] + pixel[2]) / (256 * 3))
// Depth based on it being a spheroid
var depth = 0.5 * parseInt(
Math.sqrt(
Math.cos(
Math.PI * Math.abs( 0.5*pic.height - y) / pic.height
)**2
*
Math.sin(
Math.PI * Math.abs( 0.5*pic.width - x) / pic.width
)**2
)
* pic.width
)
console.log( 'depth', depth)
var dimm_factor = 1;
var depth_x = 0;
for (var x = -depth; x < depth; x++) {
/*
var cube = new THREE.Mesh(
new THREE.BoxGeometry( 1, 1, 1),
new THREE.MeshBasicMaterial({
// color: Math.random() * 0x0000FF, // + 0x000080,
color: 0x0000FF,
// color: 0x8888AA,
transparent: true,
// opacity: Math.random() * 0.1,
opacity: 0.1,
})
);
cube.position.x = 50 + x
cube.position.y = 50 + pic.height - y
cube.position.z = 100 + z
*/
depth_x = 50 + x
dimm_factor = (1 - Math.abs( x / depth)) ** 3
if (dimm_factor < 0.1) continue;
/*
// cube.material.opacity = 0.3 * dimm_factor
// pixel = c.getImageData( z, y, 1, 1).data;
// var hex = "RGB = " + p[0]+", "+p[1]+", "+p[2];
cube.material.color.setRGB( pixel[0] / 256, pixel[1] / 256, pixel[2] / 256) // + 0x000080,
// cube.scale.x= cube.scale.y = cube.scale.z = Math.random();
// console.log('cube: ', cube)
scene.add(cube);
*/
positions.push(depth_x)
positions.push(pic.height - y)
positions.push(z)
colors.push( pixel[0] / 256)
colors.push( pixel[1] / 256)
colors.push( pixel[2] / 256)
// colors.push( dimm_factor * pixel[0] / 256)
// colors.push( dimm_factor * pixel[1] / 256)
// colors.push( dimm_factor * pixel[2] / 256)
sizes.push( dimm_factor * 5)
}
}
}
// Arrays have now been populated with x,y,z and color info
console.log( positions, colors)
stars_geometry.setAttribute( 'size', new THREE.BufferAttribute( new Float32Array(sizes), 1 ) );
stars_geometry.setAttribute( 'position', new THREE.BufferAttribute( new Float32Array( positions), 3 ) );
stars_geometry.setAttribute( 'customColor', new THREE.BufferAttribute( new Float32Array(colors), 3 ) );
const point_material = new THREE.ShaderMaterial( {
uniforms: {
color: { value: new THREE.Color( 0xffffff ) },
// pointTexture: { value: new THREE.TextureLoader().load( 'three.js/textures/sprites/spark1.png' ) }
// https://www.cleanpng.com/png-sparkling-star-download-light-302543/download-png.html
pointTexture: { value: new THREE.TextureLoader().load( 'images/cloud1.png' ) }
},
vertexShader: document.getElementById( 'vertexshader' ).textContent,
fragmentShader: document.getElementById( 'fragmentshader' ).textContent,
// blending: THREE.AdditiveBlending, <- Makes nebula way too bright
// blending: THREE.Normal, // <- is OK
// blending: THREE.Multiply, <- Maybe not so good as causes dimming from some angles
depthTest: false,
transparent: true,
vertexColors : true
// flatShading: true
} );
var points = new THREE.Points( stars_geometry, point_material );
scene.add( points );
}
}
// document.getElementById("output").innerHTML = hex;
// let img = new (window as any).Image();
// img.crossOrigin = `Anonymous`;
// img.src = "nebulae/out.png";
// img.onload = function () {
// canvas = document.getElementById("myCanvas") as HTMLCanvasElement;
// canvas.width = img.width;
// canvas.height = img.height;
// let ctx: CanvasRenderingContext2D = canvas.getContext(
// "2d"
// ) as CanvasRenderingContext2D;
// ctx.drawImage(img, 0, 0);
// const imgData = ctx.getImageData(0, 0, canvas.width, canvas.height);
// data = imgData.data;
// canvas.addEventListener("mousemove", (ev) => {
// //as the mouse moves around the image
// let cols = canvas.width;
// let { offsetX, offsetY } = ev;
// //call the method to get the r,g,b,a values for current pixel
// let c = extractPixelColor(cols, offsetY, offsetX);
// //build a colour string for
// let colour = `rgb(${c.red}, ${c.green}, ${c.blue})`} ;
// let hexCode = `#${[c.red, c.green, c.blue]
// .map((x) => x.toString(16).padStart(2, "0"))
// .join("")}`;
// });
// };
}
function add_cubes_to_scene( scene, cube_data) {
console.log('Entering cubes ....')
/*
theta: props.theta || 0.1,
radius: props.radius || 600,
opacity: props.opacity || 0.2,
count: props.count || 150,
palette: props.palette || null,
// */
// const { palette, opacity } = this;
// if (Array.isArray(palette)) {
// const cubeColor = palette[Math.floor(
// Math.random() * palette.length
// )];
// }
// const cube = new THREE.Mesh(
// new THREE.BoxGeometry( 50, 50, 50),