Generative artist, sharing my journey in visual experiments.
sh = async () => raymarch({
antiAliasing: 3,
eye: `vec3(.3, .1, .7) * 1.2 * rotate3D(sin(u_time * TAU) * .7, vec3(1, 0, 0))`,
sceneSDF: `
#define PI ${Math.PI}
#define TAU ${Math.PI * 2}
uniform sampler2D u_texture;
${iqSDF.sdBox()}
${iqSDF.sdSphere()}
${iqSDF.sdTorus()}
${iqSDF.opUnion()}
${iqSDF.opSmoothUnion()}
${glslSnippets.rotate3D()}
${glslSnippets.random()}
${await glslSnippets.matcap()}
vec2 sceneSDF(vec3 p) {
vec3 pp = p;
float t = u_time * TAU;
float sinT = sin(t);
float cosT = cos(t);
float d = sdTorus(p.xzy * rotate3D(-t, vec3(1, 0, 1)), vec2(.3, .05));
d = opSmoothUnion(d, sdTorus(p.xzy * rotate3D(t, vec3(0, 1, 1)), vec2(.12, .02)), .1);
d = opSmoothUnion(d, sdTorus(p * rotate3D(t * 2., vec3(1, 1, 0)), vec2(.48, .06)), .1);
float dd = 10e5;
const float N = 60.;
for(float i = 0.; i < N; i++) {
float angle = TAU / N * i;
vec3 pp = p * rotate3D(angle, vec3(0,0,1));
pp *= rotate3D(random(i * 2.654823) * TAU, vec3(0,1,0));
pp.x += .4 + .3 * sin((u_time + i/N * 4. + i * 2.1332) * TAU * 2.);
dd = opSmoothUnion(dd, sdSphere(pp, .02 + random(i) * .02), .1);
}
d = opSmoothUnion(d, dd, .1);
return vec2(d, 2.);
}`,
computeColor: `
vec3 computeColor(vec3 ro, vec3 rd, vec3 pos, float d, float m) {
vec3 color = vec3(0.);
vec3 nor = calcNormal(pos);
//color = nor;
vec2 matcapUV = matcap(rd, nor);
color = texture2D(u_texture, matcapUV).rgb;
//float fre = pow(clamp(1.0 + dot(nor, rd), 0.0, 1.0), 2.0); // fresnel
float fre = pow(1.0 + dot(nor, rd), 2.); // fresnel
//color = vec3(fre);
vec3 bg = vec3(0.6 - length((gl_FragCoord.xy - u_resolution / 2.) / u_resolution.x));
color = mix(color, bg, fre);
return color;
}`,
logShader: true
})
matcapURL = `https://makio135.com/matcaps/512/${shuffle(matcapIds)[0]}-512px.png`
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