CharStiles

// Define some constants
const int steps = 128; // This is the maximum amount a ray can march.
const float smallNumber = 0.001;
const float maxDist = 10.; // This is the maximum distance a ray can travel.
 
float scene(vec3 position){
    // So this is different from the normal sphere equation in that I am
    // splitting the position into it's three different parts
    // and adding a 10th of a cos wave to the x position so it oscillates left 

CharStiles

// Define some constants
const int steps = 64; // This is the maximum amount a ray can march.
const float smallNumber = 0.001;
const float maxDist = 10.; // This is the maximum distance a ray can travel.
 
 // smoothly interpolate between two fuctions with k that controls the radious/distance of the smoothness.
// read more here about smin: https://iquilezles.org/www/articles/smin/smin.htm
float smin( float a, float b, float k )
{
    float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );

CharStiles

// Define some constants
const int steps = 128; // This is the maximum amount a ray can march.
const float smallNumber = 0.001;
const float maxDist = 10.; // This is the maximum distance a ray can travel.
 
float scene(vec3 position){
    // So this is different from the normal sphere equation in that I am
    // splitting the position into it's three different parts
    // and adding a 10th of a cos wave to the x position so it oscillates left 

CharStiles

// Define some constants
const int steps = 128; // This is the maximum amount a ray can march.
const float smallNumber = 0.001;
const float maxDist = 10.; // This is the maximum distance a ray can travel.
 
float scene(vec3 position){
    // So this is different from the normal sphere equation in that I am
    // splitting the position into it's three different parts
    // and adding a 10th of a cos wave to the x position so it oscillates left 

CharStiles

float circ(vec2 p){
    return length(p) - .50;   
}

// Repeat in two dimensions
vec2 pMod2(inout vec2 p, vec2 size) {
    vec2 c = floor((p + size*0.5)/size);
    p = mod(p + size*0.5,size) - size*0.5;
    return c;
}

CharStiles

float circ(vec2 p){
    return length(p) - .50;   
}

// Repeat in two dimensions
vec2 pMod2(inout vec2 p, vec2 size) {
    vec2 c = floor((p + size*0.5)/size);
    p = mod(p + size*0.5,size) - size*0.5;
    return c;
}

CharStiles

float circ(vec2 p){
    return length(p) - .50;   
}

// http://www.iquilezles.org/www/articles/palettes/palettes.htm
// As t runs from 0 to 1 (our normalized palette index or domain), 
//the cosine oscilates c times with a phase of d. 
//The result is scaled and biased by a and b to meet the desired constrast and brightness.
vec3 cosPalette( float t, vec3 a, vec3 b, vec3 c, vec3 d )
{

CharStiles

float circ( vec2 p){
    
    return length(p) - 0.3;
}
void pR(inout vec2 p, float a) {
    p = cos(a)*p + sin(a)*vec2(p.y, -p.x);
}
// Repeat in two dimensions
vec2 pMod2(inout vec2 p, vec2 size) {
    vec2 c = floor((p + size*0.5)/size);

CharStiles

#ifdef GL_ES
precision highp float;
#endif

uniform float time;
uniform vec2 resolution;
uniform vec2 mouse;
uniform vec3 spectrum;

uniform sampler2D myPic;

CharStiles

// Define some constants
const int steps = 128; // This is the maximum amount a ray can march.
const float smallNumber = 0.0001;
const float maxDist = 30.; // This is the maximum distance a ray can travel.
 
float smin( float a, float b, float k )
{
    float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );
    return mix( b, a, h ) - k*h*(1.0-h);