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index_star_nolib.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>No Lib Test</title>
<style>
body,html {
width:100%;height:100%;margin:0;padding:0;background-color: black;
}
#can {
position:absolute;top:0;left:0;width:100% !important;height:100% !important;cursor:move;
}
</style>
<!-- <script src='src/planets.js'></script> -->
</head>
<body>
<canvas id="can"></canvas>
<script id="shader-vertex-star-halo" type="x-shader/x-vertex">
uniform float sphere_radius;
uniform vec3 sphere_position;
uniform float time;
uniform float time_multiplier;
uniform vec3 color_step_1;
uniform vec3 color_step_2;
uniform vec3 color_step_3;
uniform vec3 color_step_4;
uniform float ratio_step_1;
uniform float ratio_step_2;
varying float v_distance_to_surface;
void main()
{
float camera_distance = distance(sphere_position,cameraPosition);
float angle = asin(sphere_radius / camera_distance);
float visible_radius = tan(angle) * camera_distance;
float distance_to_surface = distance(sphere_position,position) - visible_radius;
v_distance_to_surface = distance_to_surface;
gl_Position = projectionMatrix * modelViewMatrix * vec4(position,1.0);
}
</script>
<script id="shader-fragment-star-halo" type="x-shader/x-fragment">
uniform float time;
uniform float time_multiplier;
uniform vec3 color_step_1;
uniform vec3 color_step_2;
uniform vec3 color_step_3;
uniform vec3 color_step_4;
uniform float ratio_step_1;
uniform float ratio_step_2;
varying float v_distance_to_surface;
vec3 get_color_from_gradient(float value)
{
vec3 color;
if(value < ratio_step_1)
{
value = smoothstep(0.0,ratio_step_1,value);
color = mix( color_step_1, color_step_2, vec3(value,value,value));
// color = vec3(1.0,0.0,0.0);
}
else if(value < ratio_step_2)
{
value = smoothstep(ratio_step_1,ratio_step_2,value);
color = mix( color_step_2, color_step_3, vec3(value,value,value));
// color = vec3(0.0,1.0,0.0);
}
else
{
value = smoothstep(ratio_step_2,1.0,value);
color = mix( color_step_3, color_step_4, vec3(value,value,value));
// color = vec3(0.0,0.0,1.0);
}
return color;
}
void main()
{
float halo_1_radius = 0.03;
float strength_1 = (1.0 - v_distance_to_surface / halo_1_radius);
float halo_2_radius = 1.0;
float strength_2 = (1.0 - v_distance_to_surface / halo_2_radius);
vec4 color_1 = vec4(get_color_from_gradient(strength_1),strength_1);
vec4 color_2 = vec4(get_color_from_gradient(strength_2 - 0.7),strength_2);
color_1 = clamp(color_1,vec4(0.0,0.0,0.0,0.0),vec4(1.0,1.0,1.0,1.0));
color_2 = clamp(color_2,vec4(0.0,0.0,0.0,0.0),vec4(1.0,1.0,1.0,1.0));
gl_FragColor = color_1 + color_2 * 0.65;
}
</script>
<script id="shader-vertex-star-sphere" type="x-shader/x-vertex">
//
// Author: Stefan Gustavson ([email protected])
// Version: 2011-08-22
//
// Copyright (c) 2011 Stefan Gustavson. All rights reserved.
// Distributed under the MIT license. See LICENSE file.
// https://github.com/ashima/webgl-noise
//
vec4 mod289(vec4 x)
{
return x - floor(x * (1.0 / 289.0)) * 289.0;
}
vec4 permute(vec4 x)
{
return mod289(((x*34.0)+1.0)*x);
}
vec4 taylorInvSqrt(vec4 r)
{
return 1.79284291400159 - 0.85373472095314 * r;
}
vec4 fade(vec4 t) {
return t*t*t*(t*(t*6.0-15.0)+10.0);
}
// Classic Perlin noise
float cnoise(vec4 P)
{
vec4 Pi0 = floor(P); // Integer part for indexing
vec4 Pi1 = Pi0 + 1.0; // Integer part + 1
Pi0 = mod289(Pi0);
Pi1 = mod289(Pi1);
vec4 Pf0 = fract(P); // Fractional part for interpolation
vec4 Pf1 = Pf0 - 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 = vec4(Pi0.zzzz);
vec4 iz1 = vec4(Pi1.zzzz);
vec4 iw0 = vec4(Pi0.wwww);
vec4 iw1 = vec4(Pi1.wwww);
vec4 ixy = permute(permute(ix) + iy);
vec4 ixy0 = permute(ixy + iz0);
vec4 ixy1 = permute(ixy + iz1);
vec4 ixy00 = permute(ixy0 + iw0);
vec4 ixy01 = permute(ixy0 + iw1);
vec4 ixy10 = permute(ixy1 + iw0);
vec4 ixy11 = permute(ixy1 + iw1);
vec4 gx00 = ixy00 * (1.0 / 7.0);
vec4 gy00 = floor(gx00) * (1.0 / 7.0);
vec4 gz00 = floor(gy00) * (1.0 / 6.0);
gx00 = fract(gx00) - 0.5;
gy00 = fract(gy00) - 0.5;
gz00 = fract(gz00) - 0.5;
vec4 gw00 = vec4(0.75) - abs(gx00) - abs(gy00) - abs(gz00);
vec4 sw00 = step(gw00, vec4(0.0));
gx00 -= sw00 * (step(0.0, gx00) - 0.5);
gy00 -= sw00 * (step(0.0, gy00) - 0.5);
vec4 gx01 = ixy01 * (1.0 / 7.0);
vec4 gy01 = floor(gx01) * (1.0 / 7.0);
vec4 gz01 = floor(gy01) * (1.0 / 6.0);
gx01 = fract(gx01) - 0.5;
gy01 = fract(gy01) - 0.5;
gz01 = fract(gz01) - 0.5;
vec4 gw01 = vec4(0.75) - abs(gx01) - abs(gy01) - abs(gz01);
vec4 sw01 = step(gw01, vec4(0.0));
gx01 -= sw01 * (step(0.0, gx01) - 0.5);
gy01 -= sw01 * (step(0.0, gy01) - 0.5);
vec4 gx10 = ixy10 * (1.0 / 7.0);
vec4 gy10 = floor(gx10) * (1.0 / 7.0);
vec4 gz10 = floor(gy10) * (1.0 / 6.0);
gx10 = fract(gx10) - 0.5;
gy10 = fract(gy10) - 0.5;
gz10 = fract(gz10) - 0.5;
vec4 gw10 = vec4(0.75) - abs(gx10) - abs(gy10) - abs(gz10);
vec4 sw10 = step(gw10, vec4(0.0));
gx10 -= sw10 * (step(0.0, gx10) - 0.5);
gy10 -= sw10 * (step(0.0, gy10) - 0.5);
vec4 gx11 = ixy11 * (1.0 / 7.0);
vec4 gy11 = floor(gx11) * (1.0 / 7.0);
vec4 gz11 = floor(gy11) * (1.0 / 6.0);
gx11 = fract(gx11) - 0.5;
gy11 = fract(gy11) - 0.5;
gz11 = fract(gz11) - 0.5;
vec4 gw11 = vec4(0.75) - abs(gx11) - abs(gy11) - abs(gz11);
vec4 sw11 = step(gw11, vec4(0.0));
gx11 -= sw11 * (step(0.0, gx11) - 0.5);
gy11 -= sw11 * (step(0.0, gy11) - 0.5);
vec4 g0000 = vec4(gx00.x,gy00.x,gz00.x,gw00.x);
vec4 g1000 = vec4(gx00.y,gy00.y,gz00.y,gw00.y);
vec4 g0100 = vec4(gx00.z,gy00.z,gz00.z,gw00.z);
vec4 g1100 = vec4(gx00.w,gy00.w,gz00.w,gw00.w);
vec4 g0010 = vec4(gx10.x,gy10.x,gz10.x,gw10.x);
vec4 g1010 = vec4(gx10.y,gy10.y,gz10.y,gw10.y);
vec4 g0110 = vec4(gx10.z,gy10.z,gz10.z,gw10.z);
vec4 g1110 = vec4(gx10.w,gy10.w,gz10.w,gw10.w);
vec4 g0001 = vec4(gx01.x,gy01.x,gz01.x,gw01.x);
vec4 g1001 = vec4(gx01.y,gy01.y,gz01.y,gw01.y);
vec4 g0101 = vec4(gx01.z,gy01.z,gz01.z,gw01.z);
vec4 g1101 = vec4(gx01.w,gy01.w,gz01.w,gw01.w);
vec4 g0011 = vec4(gx11.x,gy11.x,gz11.x,gw11.x);
vec4 g1011 = vec4(gx11.y,gy11.y,gz11.y,gw11.y);
vec4 g0111 = vec4(gx11.z,gy11.z,gz11.z,gw11.z);
vec4 g1111 = vec4(gx11.w,gy11.w,gz11.w,gw11.w);
vec4 norm00 = taylorInvSqrt(vec4(dot(g0000, g0000), dot(g0100, g0100), dot(g1000, g1000), dot(g1100, g1100)));
g0000 *= norm00.x;
g0100 *= norm00.y;
g1000 *= norm00.z;
g1100 *= norm00.w;
vec4 norm01 = taylorInvSqrt(vec4(dot(g0001, g0001), dot(g0101, g0101), dot(g1001, g1001), dot(g1101, g1101)));
g0001 *= norm01.x;
g0101 *= norm01.y;
g1001 *= norm01.z;
g1101 *= norm01.w;
vec4 norm10 = taylorInvSqrt(vec4(dot(g0010, g0010), dot(g0110, g0110), dot(g1010, g1010), dot(g1110, g1110)));
g0010 *= norm10.x;
g0110 *= norm10.y;
g1010 *= norm10.z;
g1110 *= norm10.w;
vec4 norm11 = taylorInvSqrt(vec4(dot(g0011, g0011), dot(g0111, g0111), dot(g1011, g1011), dot(g1111, g1111)));
g0011 *= norm11.x;
g0111 *= norm11.y;
g1011 *= norm11.z;
g1111 *= norm11.w;
float n0000 = dot(g0000, Pf0);
float n1000 = dot(g1000, vec4(Pf1.x, Pf0.yzw));
float n0100 = dot(g0100, vec4(Pf0.x, Pf1.y, Pf0.zw));
float n1100 = dot(g1100, vec4(Pf1.xy, Pf0.zw));
float n0010 = dot(g0010, vec4(Pf0.xy, Pf1.z, Pf0.w));
float n1010 = dot(g1010, vec4(Pf1.x, Pf0.y, Pf1.z, Pf0.w));
float n0110 = dot(g0110, vec4(Pf0.x, Pf1.yz, Pf0.w));
float n1110 = dot(g1110, vec4(Pf1.xyz, Pf0.w));
float n0001 = dot(g0001, vec4(Pf0.xyz, Pf1.w));
float n1001 = dot(g1001, vec4(Pf1.x, Pf0.yz, Pf1.w));
float n0101 = dot(g0101, vec4(Pf0.x, Pf1.y, Pf0.z, Pf1.w));
float n1101 = dot(g1101, vec4(Pf1.xy, Pf0.z, Pf1.w));
float n0011 = dot(g0011, vec4(Pf0.xy, Pf1.zw));
float n1011 = dot(g1011, vec4(Pf1.x, Pf0.y, Pf1.zw));
float n0111 = dot(g0111, vec4(Pf0.x, Pf1.yzw));
float n1111 = dot(g1111, Pf1);
vec4 fade_xyzw = fade(Pf0);
vec4 n_0w = mix(vec4(n0000, n1000, n0100, n1100), vec4(n0001, n1001, n0101, n1101), fade_xyzw.w);
vec4 n_1w = mix(vec4(n0010, n1010, n0110, n1110), vec4(n0011, n1011, n0111, n1111), fade_xyzw.w);
vec4 n_zw = mix(n_0w, n_1w, fade_xyzw.z);
vec2 n_yzw = mix(n_zw.xy, n_zw.zw, fade_xyzw.y);
float n_xyzw = mix(n_yzw.x, n_yzw.y, fade_xyzw.x);
return 2.2 * n_xyzw;
}
uniform samplerCube texCube;
uniform float time;
uniform float time_multiplier;
uniform vec3 color_step_1;
uniform vec3 color_step_2;
uniform vec3 color_step_3;
uniform vec3 color_step_4;
uniform float ratio_step_1;
uniform float ratio_step_2;
uniform float displacement;
varying vec3 v_position;
varying float v_intensity;
vec3 get_position(vec3 position)
{
vec3 new_position = position;
// Set up
float value = 0.0;
float frequency_1 = 12.0;
float speed_1 = 0.1;
float frequency_2 = 24.0;
float speed_2 = 0.2;
// First global perlin (from 0 to 1)
float perlin_1 = (cnoise(vec4(frequency_1 * position,time *time_multiplier * 0.6)) + 1.0) / 2.0;
float perlin_2 = (cnoise(vec4(frequency_2 * position,time *time_multiplier * 0.8)) + 1.0) / 2.0;
float value_1 = clamp(perlin_1,0.4,0.5) - 0.35;
float value_2 = perlin_2;
value = value_1 * value_2 * 0.12;
new_position += normal * value;
return new_position;
}
float get_intensity(vec3 position,float angle)
{
// Perlins
float value = 0.0;
float perlin_1 = (cnoise(vec4(2.0 * position,time * time_multiplier * 0.2)) + 1.0) / 2.0;
float perlin_2 = (cnoise(vec4(6.0 * position,time * time_multiplier * 0.3)) + 1.0) / 2.0;
float perlin_3 = (cnoise(vec4(12.0 * position,time * time_multiplier * 0.5)) + 1.0) / 2.0;
float value_1 = clamp(perlin_1,0.4,0.5) - 0.35;
float value_2 = perlin_2;
float value_3 = perlin_3;
value = value_1 * perlin_2 * 8.0 * value_3 * 0.4;
value += clamp(angle - 1.0,0.0,1.0) * 1.2;
return value;
}
void main()
{
vec3 new_position = get_position(position);
vec3 direction = cameraPosition - position;
v_position = position;
float angle = acos(dot(normalize(normal),normalize(direction)));
v_intensity = get_intensity(v_position,angle);
gl_Position = projectionMatrix * modelViewMatrix * vec4(new_position,1.0);
}
</script>
<script id="shader-fragment-star-sphere" type="x-shader/x-fragment">
//
// GLSL textureless classic 4D noise "cnoise",
// with an RSL-style periodic variant "pnoise".
// Author: Stefan Gustavson ([email protected])
// Version: 2011-08-22
//
// Copyright (c) 2011 Stefan Gustavson. All rights reserved.
// Distributed under the MIT license. See LICENSE file.
// https://github.com/ashima/webgl-noise
//
vec4 mod289(vec4 x)
{
return x - floor(x * (1.0 / 289.0)) * 289.0;
}
vec4 permute(vec4 x)
{
return mod289(((x*34.0)+1.0)*x);
}
vec4 taylorInvSqrt(vec4 r)
{
return 1.79284291400159 - 0.85373472095314 * r;
}
vec4 fade(vec4 t) {
return t*t*t*(t*(t*6.0-15.0)+10.0);
}
// Classic Perlin noise
float cnoise(vec4 P)
{
vec4 Pi0 = floor(P); // Integer part for indexing
vec4 Pi1 = Pi0 + 1.0; // Integer part + 1
Pi0 = mod289(Pi0);
Pi1 = mod289(Pi1);
vec4 Pf0 = fract(P); // Fractional part for interpolation
vec4 Pf1 = Pf0 - 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 = vec4(Pi0.zzzz);
vec4 iz1 = vec4(Pi1.zzzz);
vec4 iw0 = vec4(Pi0.wwww);
vec4 iw1 = vec4(Pi1.wwww);
vec4 ixy = permute(permute(ix) + iy);
vec4 ixy0 = permute(ixy + iz0);
vec4 ixy1 = permute(ixy + iz1);
vec4 ixy00 = permute(ixy0 + iw0);
vec4 ixy01 = permute(ixy0 + iw1);
vec4 ixy10 = permute(ixy1 + iw0);
vec4 ixy11 = permute(ixy1 + iw1);
vec4 gx00 = ixy00 * (1.0 / 7.0);
vec4 gy00 = floor(gx00) * (1.0 / 7.0);
vec4 gz00 = floor(gy00) * (1.0 / 6.0);
gx00 = fract(gx00) - 0.5;
gy00 = fract(gy00) - 0.5;
gz00 = fract(gz00) - 0.5;
vec4 gw00 = vec4(0.75) - abs(gx00) - abs(gy00) - abs(gz00);
vec4 sw00 = step(gw00, vec4(0.0));
gx00 -= sw00 * (step(0.0, gx00) - 0.5);
gy00 -= sw00 * (step(0.0, gy00) - 0.5);
vec4 gx01 = ixy01 * (1.0 / 7.0);
vec4 gy01 = floor(gx01) * (1.0 / 7.0);
vec4 gz01 = floor(gy01) * (1.0 / 6.0);
gx01 = fract(gx01) - 0.5;
gy01 = fract(gy01) - 0.5;
gz01 = fract(gz01) - 0.5;
vec4 gw01 = vec4(0.75) - abs(gx01) - abs(gy01) - abs(gz01);
vec4 sw01 = step(gw01, vec4(0.0));
gx01 -= sw01 * (step(0.0, gx01) - 0.5);
gy01 -= sw01 * (step(0.0, gy01) - 0.5);
vec4 gx10 = ixy10 * (1.0 / 7.0);
vec4 gy10 = floor(gx10) * (1.0 / 7.0);
vec4 gz10 = floor(gy10) * (1.0 / 6.0);
gx10 = fract(gx10) - 0.5;
gy10 = fract(gy10) - 0.5;
gz10 = fract(gz10) - 0.5;
vec4 gw10 = vec4(0.75) - abs(gx10) - abs(gy10) - abs(gz10);
vec4 sw10 = step(gw10, vec4(0.0));
gx10 -= sw10 * (step(0.0, gx10) - 0.5);
gy10 -= sw10 * (step(0.0, gy10) - 0.5);
vec4 gx11 = ixy11 * (1.0 / 7.0);
vec4 gy11 = floor(gx11) * (1.0 / 7.0);
vec4 gz11 = floor(gy11) * (1.0 / 6.0);
gx11 = fract(gx11) - 0.5;
gy11 = fract(gy11) - 0.5;
gz11 = fract(gz11) - 0.5;
vec4 gw11 = vec4(0.75) - abs(gx11) - abs(gy11) - abs(gz11);
vec4 sw11 = step(gw11, vec4(0.0));
gx11 -= sw11 * (step(0.0, gx11) - 0.5);
gy11 -= sw11 * (step(0.0, gy11) - 0.5);
vec4 g0000 = vec4(gx00.x,gy00.x,gz00.x,gw00.x);
vec4 g1000 = vec4(gx00.y,gy00.y,gz00.y,gw00.y);
vec4 g0100 = vec4(gx00.z,gy00.z,gz00.z,gw00.z);
vec4 g1100 = vec4(gx00.w,gy00.w,gz00.w,gw00.w);
vec4 g0010 = vec4(gx10.x,gy10.x,gz10.x,gw10.x);
vec4 g1010 = vec4(gx10.y,gy10.y,gz10.y,gw10.y);
vec4 g0110 = vec4(gx10.z,gy10.z,gz10.z,gw10.z);
vec4 g1110 = vec4(gx10.w,gy10.w,gz10.w,gw10.w);
vec4 g0001 = vec4(gx01.x,gy01.x,gz01.x,gw01.x);
vec4 g1001 = vec4(gx01.y,gy01.y,gz01.y,gw01.y);
vec4 g0101 = vec4(gx01.z,gy01.z,gz01.z,gw01.z);
vec4 g1101 = vec4(gx01.w,gy01.w,gz01.w,gw01.w);
vec4 g0011 = vec4(gx11.x,gy11.x,gz11.x,gw11.x);
vec4 g1011 = vec4(gx11.y,gy11.y,gz11.y,gw11.y);
vec4 g0111 = vec4(gx11.z,gy11.z,gz11.z,gw11.z);
vec4 g1111 = vec4(gx11.w,gy11.w,gz11.w,gw11.w);
vec4 norm00 = taylorInvSqrt(vec4(dot(g0000, g0000), dot(g0100, g0100), dot(g1000, g1000), dot(g1100, g1100)));
g0000 *= norm00.x;
g0100 *= norm00.y;
g1000 *= norm00.z;
g1100 *= norm00.w;
vec4 norm01 = taylorInvSqrt(vec4(dot(g0001, g0001), dot(g0101, g0101), dot(g1001, g1001), dot(g1101, g1101)));
g0001 *= norm01.x;
g0101 *= norm01.y;
g1001 *= norm01.z;
g1101 *= norm01.w;
vec4 norm10 = taylorInvSqrt(vec4(dot(g0010, g0010), dot(g0110, g0110), dot(g1010, g1010), dot(g1110, g1110)));
g0010 *= norm10.x;
g0110 *= norm10.y;
g1010 *= norm10.z;
g1110 *= norm10.w;
vec4 norm11 = taylorInvSqrt(vec4(dot(g0011, g0011), dot(g0111, g0111), dot(g1011, g1011), dot(g1111, g1111)));
g0011 *= norm11.x;
g0111 *= norm11.y;
g1011 *= norm11.z;
g1111 *= norm11.w;
float n0000 = dot(g0000, Pf0);
float n1000 = dot(g1000, vec4(Pf1.x, Pf0.yzw));
float n0100 = dot(g0100, vec4(Pf0.x, Pf1.y, Pf0.zw));
float n1100 = dot(g1100, vec4(Pf1.xy, Pf0.zw));
float n0010 = dot(g0010, vec4(Pf0.xy, Pf1.z, Pf0.w));
float n1010 = dot(g1010, vec4(Pf1.x, Pf0.y, Pf1.z, Pf0.w));
float n0110 = dot(g0110, vec4(Pf0.x, Pf1.yz, Pf0.w));
float n1110 = dot(g1110, vec4(Pf1.xyz, Pf0.w));
float n0001 = dot(g0001, vec4(Pf0.xyz, Pf1.w));
float n1001 = dot(g1001, vec4(Pf1.x, Pf0.yz, Pf1.w));
float n0101 = dot(g0101, vec4(Pf0.x, Pf1.y, Pf0.z, Pf1.w));
float n1101 = dot(g1101, vec4(Pf1.xy, Pf0.z, Pf1.w));
float n0011 = dot(g0011, vec4(Pf0.xy, Pf1.zw));
float n1011 = dot(g1011, vec4(Pf1.x, Pf0.y, Pf1.zw));
float n0111 = dot(g0111, vec4(Pf0.x, Pf1.yzw));
float n1111 = dot(g1111, Pf1);
vec4 fade_xyzw = fade(Pf0);
vec4 n_0w = mix(vec4(n0000, n1000, n0100, n1100), vec4(n0001, n1001, n0101, n1101), fade_xyzw.w);
vec4 n_1w = mix(vec4(n0010, n1010, n0110, n1110), vec4(n0011, n1011, n0111, n1111), fade_xyzw.w);
vec4 n_zw = mix(n_0w, n_1w, fade_xyzw.z);
vec2 n_yzw = mix(n_zw.xy, n_zw.zw, fade_xyzw.y);
float n_xyzw = mix(n_yzw.x, n_yzw.y, fade_xyzw.x);
return 2.2 * n_xyzw;
}
uniform float time;
uniform float time_multiplier;
uniform vec3 color_step_1;
uniform vec3 color_step_2;
uniform vec3 color_step_3;
uniform vec3 color_step_4;
uniform float ratio_step_1;
uniform float ratio_step_2;
uniform float displacement;
varying float v_angle;
varying vec3 v_position;
varying float v_intensity;
vec3 get_color_from_gradient(float value)
{
vec3 color;
if(value < ratio_step_1)
{
value = smoothstep(0.0,ratio_step_1,value);
color = mix( color_step_1, color_step_2, vec3(value,value,value));
// color = vec3(1.0,0.0,0.0);
}
else if(value < ratio_step_2)
{
value = smoothstep(ratio_step_1,ratio_step_2,value);
color = mix( color_step_2, color_step_3, vec3(value,value,value));
// color = vec3(0.0,1.0,0.0);
}
else
{
value = smoothstep(ratio_step_2,1.0,value);
color = mix( color_step_3, color_step_4, vec3(value,value,value));
// color = vec3(0.0,0.0,1.0);
}
return color;
}
float get_intensity(vec3 position)
{
vec3 new_position = position;
// Perlins
float value = 1.0;
// | frequency | speed
float perlin_4 = (cnoise(vec4(100.0 * new_position,time * time_multiplier * 1.0)) + 1.0) / 2.0;
float perlin_5 = (cnoise(vec4(200.0 * new_position,time * time_multiplier * 1.0)) + 1.0) / 2.0;
float value_4 = 1.0 - clamp(perlin_4,0.0,0.3) * 3.0;
float value_5 = perlin_5;
// Final value
value *= value_4;
value *= value_5;
value *= 14.0;
return value;
}
void main()
{
vec3 new_position = v_position;
float new_displacement = v_intensity * 6.0 * displacement;
// Displacement
if(new_displacement != 0.0)
{
float displacement_1 = (cnoise(vec4(36.0 * new_position,time * 0.0003 * 0.5)) + 1.0) / 2.0;
new_position.x += displacement_1 * new_displacement;
new_position.y += displacement_1 * new_displacement;
new_position.z += displacement_1 * new_displacement;
}
float intensity = get_intensity(new_position) * v_intensity * 3.0;
vec3 color = get_color_from_gradient(intensity);
gl_FragColor = vec4(color,1.0);
}
</script>
<script src="libs/dat.gui.min.js"></script>
<script src='libs/three.js'></script>
<script src="libs/EffectComposer.js"></script>
<script src="libs/RenderPass.js"></script>
<script src="libs/ShaderPass.js"></script>
<script src="libs/MaskPass.js"></script>
<script src="libs/FXAAShader.js"></script>
<script src="libs/CopyShader.js"></script>
</body>
<script>
// /**
// * Set up
// */
var scene = new THREE.Scene(),
camera = new THREE.PerspectiveCamera( 55, window.innerWidth / window.innerHeight, 0.1, 100000 ),
renderer = new THREE.WebGLRenderer( { canvas : document.getElementById( 'can' ), alpha : true } ),
mouse = { down : false, origin : { x : 0, y : 0 }, offset : { x : 0, y : 0 }, wheel : 300 },
start_time = + new Date();
camera.position.z = 10;
renderer.setClearColor( 0x000000, 1 );
/**
* Render (FXAA) no
*/
var pixel_ratio = window.devicePixelRatio !== undefined ? window.devicePixelRatio : 1;
var render_pass = new THREE.RenderPass( scene, camera );
var fxaa_pass = new THREE.ShaderPass( THREE.FXAAShader );
fxaa_pass.uniforms.resolution.value.set( 1 / (window.innerWidth * pixel_ratio ), 1 / ( window.innerHeight * pixel_ratio ) );
fxaa_pass.renderToScreen = true;
composer = new THREE.EffectComposer( renderer );
composer.setSize( window.innerWidth * pixel_ratio, window.innerHeight * pixel_ratio );
composer.addPass( render_pass );
composer.addPass( fxaa_pass );
// /**
// * Resize function
// */
var resize = function()
{
// Resize renderer and composer
renderer.setSize( window.innerWidth * window.devicePixelRatio, window.innerHeight * window.devicePixelRatio );
fxaa_pass.uniforms.resolution.value.set( 1 / ( window.innerWidth * pixel_ratio ), 1 / ( window.innerHeight * pixel_ratio ) );
composer.setSize( window.innerWidth * pixel_ratio, window.innerHeight * pixel_ratio );
// Update camera
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
};
window.onresize = resize;
resize();
/**
* Mouse function
*/
var mouse_move = function( e )
{
if(mouse.down)
{
var ratio_x = ( e.clientX / window.innerWidth - 0.5 ) * 2,
ratio_y = - ( e.clientY / window.innerHeight - 0.5 ) * 2;
mouse.offset.x += ratio_x - mouse.origin.x;
mouse.offset.y += ratio_y - mouse.origin.y;
if( mouse.offset.y < - 0.5 )
mouse.offset.y = - 0.5;
else if( mouse.offset.y > 0.5 )
mouse.offset.y = 0.5;
mouse.origin.x = ratio_x;
mouse.origin.y = ratio_y;
}
};
var mouse_down = function( e )
{
mouse.down = true;
var ratio_x = ( e.clientX / window.innerWidth - 0.5 ) * 2,
ratio_y = - ( e.clientY / window.innerHeight - 0.5 ) * 2;
mouse.origin.x = ratio_x;
mouse.origin.y = ratio_y;
};
var mouse_up = function( e )
{
mouse.down = false;
};
var mouse_wheel = function( e )
{
e.preventDefault();
if(e.detail)
mouse.wheel += e.detail * 3;
else
mouse.wheel += e.deltaY;
if( mouse.wheel < 100 )
mouse.wheel = 100;
else if( mouse.wheel > 5000 )
mouse.wheel = 5000;
};
document.onmousemove = mouse_move;
document.onmousedown = mouse_down;
document.onmouseup = mouse_up;
if ('onmousewheel' in document )
document.onmousewheel = mouse_wheel;
else
document.addEventListener( 'DOMMouseScroll', mouse_wheel, false );
/**
* Star
*/
var star_object = new THREE.Object3D();
scene.add(star_object);
// Colors
var colors =
{
current : [],
red :
[
'#440000',
'#ff6600',
'#ffd236',
'#ffe68f',
],
blue :
[
'#001159',
'#0072ff',
'#00c7ff',
'#90f6ff',
],
green :
[
'#00361f',
'#47ca00',
'#78ff00',
'#c7ff67',
]
};
colors.current = Object.create(colors.red);
// Uniforms (for sphere and halo)
var star_uniforms = {
sphere_radius :
{
type : 'f',
value : 1
},
sphere_position :
{
type : 'v3',
value : new THREE.Vector3(0,0,0)
},
time :
{
type : 'f',
value : 0
},
time_multiplier :
{
type : 'f',
value : 0.0005
},
color_step_1 :
{
type : 'c',
value : new THREE.Color(colors.current[0])
},
color_step_2 :
{
type : 'c',
value : new THREE.Color(colors.current[1])
},
color_step_3 :
{
type : 'c',
value : new THREE.Color(colors.current[2])
},
color_step_4 :
{
type : 'c',
value : new THREE.Color(colors.current[3])
},
ratio_step_1 :
{
type : 'f',
value : 0.4
},
ratio_step_2 :
{
type : 'f',
value : 0.9
},
displacement :
{
type : 'f',
value : 0.03
}
};
/**
* Sphere
*/
var sphere_vertex_shader = document.getElementById( 'shader-vertex-star-sphere' ).textContent,
sphere_fragment_shader = document.getElementById( 'shader-fragment-star-sphere' ).textContent,
sphere_geometry = new THREE.SphereGeometry( 1, 100, 100 ),
sphere_material = new THREE.ShaderMaterial( {
wireframe : false,
vertexShader : sphere_vertex_shader,
fragmentShader : sphere_fragment_shader,
uniforms : star_uniforms,
transparent : true
} ),
sphere_object = new THREE.Mesh( sphere_geometry, sphere_material );
star_object.add( sphere_object );
/**
* Halo
*/
var halo_vertex_shader = document.getElementById( 'shader-vertex-star-halo' ).textContent,
halo_fragment_shader = document.getElementById( 'shader-fragment-star-halo' ).textContent,
halo_uniforms = star_uniforms,
halo_geometry = new THREE.PlaneBufferGeometry( 4, 4, 40, 40 ),
halo_material = new THREE.ShaderMaterial( {
vertexShader : halo_vertex_shader,
fragmentShader : halo_fragment_shader,
uniforms : star_uniforms,
transparent : true
} ),
// halo_material = new THREE.MeshBasicMaterial( { color : 0xff0000 } ),
halo_object = new THREE.Mesh( halo_geometry, halo_material );
star_object.add( halo_object );
// /**
// * Presets
// */
function go_preset_red()
{
colors.current = Object.create(colors.red);
update_colors();
}
function go_preset_blue()
{
colors.current = Object.create(colors.blue);
update_colors();
}
function go_preset_green()
{
colors.current = Object.create(colors.green);
update_colors();
}
function update_colors()
{
star_uniforms.color_step_1.value = new THREE.Color(colors.current[0]);
star_uniforms.color_step_2.value = new THREE.Color(colors.current[1]);
star_uniforms.color_step_3.value = new THREE.Color(colors.current[2]);
star_uniforms.color_step_4.value = new THREE.Color(colors.current[3]);
gui_manual_update = true;
color_1.setValue(colors.current[0]);
color_2.setValue(colors.current[1]);
color_3.setValue(colors.current[2]);
color_4.setValue(colors.current[3]);
gui_manual_update = false;
}
/**
* Dat GUI
*/
var gui = new dat.GUI(),
gui_params = gui.addFolder('Params'),
gui_presets = gui.addFolder('Presets'),
gui_manual_update = false;
gui_params.open();
console.log(colors.current);
var color_1 = gui_params.addColor(colors.current,'0').name('color 1'),
color_2 = gui_params.addColor(colors.current,'1').name('color 2'),
color_3 = gui_params.addColor(colors.current,'2').name('color 3'),
color_4 = gui_params.addColor(colors.current,'3').name('color 4');
gui_params.add(star_uniforms.ratio_step_1,'value').min(0).max(1).step(0.01).name('step 1');
gui_params.add(star_uniforms.ratio_step_2,'value').min(0).max(1).step(0.01).name('step 2');
gui_params.add(star_uniforms.displacement,'value').min(0).max(1).step(0.0001).name('displacement');
gui_params.add(star_uniforms.time_multiplier,'value').min(0).max(0.01).step(0.00001).name('time multiplier');
color_1.onChange(function(value)
{
if(gui_manual_update)
return;
colors.current[0] = value;
update_colors();
});
color_2.onChange(function(value)
{
if(gui_manual_update)
return;
colors.current[1] = value;
update_colors();
});
color_3.onChange(function(value)
{
if(gui_manual_update)
return;
colors.current[2] = value;
update_colors();
});
color_4.onChange(function(value)
{
if(gui_manual_update)
return;
colors.current[3] = value;
update_colors();
});
gui_presets.open();
gui_presets.add(window,'go_preset_red').name('red');
gui_presets.add(window,'go_preset_blue').name('blue');
gui_presets.add(window,'go_preset_green').name('green');
/**
* Frame function
*/
var frame = function()
{
window.requestAnimationFrame( frame );
// Update camera
var phi = - mouse.offset.y * Math.PI,
theta = - mouse.offset.x * Math.PI;
var x = - ( mouse.wheel / 100 + 1 ) * Math.cos( phi ) * Math.cos( theta ),
y = ( mouse.wheel / 100 + 1 ) * Math.sin( phi ),
z = ( mouse.wheel / 100 + 1 ) * Math.cos( phi ) * Math.sin( theta );
camera.position.x += (x - camera.position.x) / 4;
camera.position.y += (y - camera.position.y) / 4;
camera.position.z += (z - camera.position.z) / 4;
camera.lookAt( new THREE.Vector3() );
// Update sphere
star_uniforms.time.value = + new Date() - start_time;
// Update halo
halo_object.lookAt(camera.position);
// Render
renderer.render( scene, camera );
};
frame();
</script>
</html>