precision highp float; uniform vec2 resolution; uniform vec2 mouse; uniform float time; uniform sampler2D backbuffer; float PI = 3.141592; mat2 rot(float r){ return mat2(cos(r),sin(r),-sin(r),cos(r)); } float random (in vec2 st) { return fract(sin(dot(st.xy, vec2(12.9898,78.233)))* 43758.5453123); } float noise (in vec2 st) { vec2 i = floor(st); vec2 f = fract(st); float a = random(i); float b = random(i + vec2(1.0, 0.0)); float c = random(i + vec2(0.0, 1.0)); float d = random(i + vec2(1.0, 1.0)); vec2 u = f * f * (3.0 - 2.0 * f); return mix(a, b, u.x) + (c - a)* u.y * (1.0 - u.x) + (d - b) * u.x * u.y; } #define OCTAVES 6 float fbm (in vec2 st) { float value = 0.0; float amplitude = .5; float frequency = 0.; for (int i = 0; i < OCTAVES; i++) { value += amplitude * noise(st); st *= 2.; amplitude *= .5; } return value; } float cylin( vec3 p, float h, float r ) { p.y -= clamp( p.y, 0.0, h ); return length( p ) - r; } float hashira(vec3 p,vec2 s){ vec2 q = abs(p.xz); vec2 m = max(s-q,0.); return length(max(q-s,0.))-min(m.x,m.y); } float box(vec3 p,vec3 s){ vec3 q = abs(p); vec3 m = max(s-q,0.); return length(max(q-s,0.))-min(min(m.x,m.y),m.z); } float cup(vec3 p){ p.xy *= rot(PI); p.y += 0.4; float sd = abs(length(p)-0.4)-0.01; float bd = box(p-vec3(0,-0.45,0),vec3(0.9,0.2,0.9)); return max(sd,-bd); } // The MIT License // Copyright © 2019 Inigo Quilez float dot2( in vec2 v ) { return dot(v,v); } vec4 sdJoint3DSphere( in vec3 p, in float l, in float a, in float w) { // if perfectly straight if( abs(a)<0.001 ) return vec4( length(p-vec3(0,clamp(p.y,0.0,l),0))-w, p ); // parameters vec2 sc = vec2(sin(a),cos(a)); float ra = 0.5*l/a; // recenter p.x -= ra; // reflect vec2 q = p.xy - 2.0*sc*max(0.0,dot(sc,p.xy)); float u = abs(ra)-length(q); float d2 = (q.y<0.0) ? dot2( q+vec2(ra,0.0) ) : u*u; float s = sign(a); return vec4( sqrt(d2+p.z*p.z)-w, (p.y>0.0) ? s*u : s*sign(-p.x)*(q.x+ra), (p.y>0.0) ? atan(s*p.y,-s*p.x)*ra : (s*p.x<0.0)?p.y:l-p.y, p.z ); } vec4 rope1(vec3 p){ p.y += 1.; p.x -= 1.; p.yz *= rot(PI); float an2 = 0.1*sin(time*1.9)*exp(fract(time*1.9/(PI*2.)))-0.2; float le2 = 0.6; float wi2 = 0.01; vec4 d4 = sdJoint3DSphere(p, le2, an2, wi2 ); p.xy*= rot(-an2); p -= vec3(0,le2/an2*sin(an2),0); p.xy*= rot(-an2); return vec4(p,d4.x); } vec4 cup1(vec3 p1){ vec4 rope1obj = rope1(p1); vec3 p = rope1obj.xyz; float d4 = rope1obj.w; float scup = 1.6; float d0 = cup(p*scup)/scup; return vec4(p,min(d0,d4)); } vec4 rope2(vec3 p1){ vec4 cupobj = cup1(p1); vec3 p = cupobj.xyz; float d0 = cupobj.w; p.xy *= rot(0.1*sin(time)); float an = 0.1*sin(time*2.)*exp(fract(time*2./(PI*2.)))-0.15; float le = 1.2; float wi = 0.01; vec4 d1 = sdJoint3DSphere(p, le, an, wi ); p.xy*= rot(-an); p -= vec3(0,le/an*sin(an),0); p.xy*= rot(-an); p.xz *= rot(time*4.+pow(abs(sin(time)),4.)*time*6.); return vec4(p,min(d1.x,d0)); } vec4 paper1(vec3 p1){ vec4 rope2obj = rope2(p1); vec3 p = rope2obj.xyz; float d1 = rope2obj.w; float planex = 0.4; float d2 = box(p-vec3(0,planex,0),vec3(0.01,planex,0.1)); return vec4(p,min(d2,d1)); } float hurin(vec3 p){ vec4 paper1obj = paper1(p); p = paper1obj.xyz; float d2 = paper1obj.w; //p.yz *= rot(time); return d2; } float ueno(vec3 p){ vec3 sp = p; sp.xy *=rot(0.5*PI); sp.x = abs(sp.x)-0.8; float d1 = hashira(sp,vec2(0.2,0.2)); sp = p; float spkx = 2.6; sp.x = mod(sp.x,spkx)-0.5*spkx; float d2 = box(sp,vec3(0.1,0.8,0.2)); float d3 = box(p-vec3(0,1.8,0),vec3(100,0.2,3)); return min(min(d1,d2),d3); } float door(vec3 sp){ return box(sp-vec3(-7,-4,0),vec3(5,3,0.15)); } float ana(vec3 p){ p.x += 0.2; p.y +=0.15; float k = 0.9; p.xy = mod(p.xy,k)-0.5*k; p.z = abs(p.z)-1.; float d0 = box(p,vec3(0.38,0.38,0.95)); return d0; } float dist(vec3 p){ float d0 = ueno(p); float d3 = door(p); d3 = max(d3,-ana(p)); return min(min(d0,d3),hurin(p)); } vec3 getNormal(vec3 p){ vec2 e = vec2(0.001,0.); return normalize(vec3( dist(p+e.xyy)-dist(p-e.xyy), dist(p+e.yxy)-dist(p-e.yxy), dist(p+e.yyx)-dist(p-e.yyx) )); } vec3 woodoorlight(vec3 p,vec3 ld,vec3 normal,vec3 vd){ float alp = .5; float dif = pow((alp*max(dot(normal,ld),0.)+(1.-alp)),2.); float nof = fbm(p.xy*1.+p.z*0.3); float nof2 = fbm(20.+p.xy*2.+.4*p.z); vec3 alb = vec3(218.,143.,143.)/255.*(0.2+0.8*nof); if(mod(nof*10.0,2.0)<0.2||mod(nof2*10.0,2.0)<0.2){ alb =vec3(0,0,0); } return dif*alb; } vec3 wooduplight(vec3 p,vec3 ld,vec3 normal,vec3 vd){ float alp = .5; float dif = pow((alp*max(dot(normal,ld),0.)+(1.-alp)),2.); float nof = fbm(40.+p.xy*1.+p.z*0.3); float nof2 = fbm(30.+p.xy*2.+.4*p.z); vec3 alb = 0.4*vec3(288.,143.,143.)/255.*(0.2+0.8*nof); if(mod(nof*10.0,2.0)<0.2){ alb =vec3(0,0,0); } return dif*alb; } vec3 paperlight(vec3 p,vec3 ld,vec3 normal,vec3 vd){ float alp = .1; float dif = pow((alp*max(dot(normal,ld),0.)+(1.-alp)),2.); vec3 alb = vec3(1.0); return dif*alb; } vec3 sky(vec3 vd,vec3 ld){ float dalp = pow(dot(ld,vd),6.); vec3 blue = normalize(vec3(0.1,0.2,1.)); vec3 white = vec3(1); vec3 scol= mix(blue,white,dalp); float fbmem = fbm(6.*vd.yx+time*0.1); return mix(vec3(0.1,0.3,0.9),scol+fbmem,clamp(vd.y*2.,0.,1.0)); } void main(){vec2 r=resolution,p=(gl_FragCoord.xy*2.-r)/min(r.x,r.y); vec2 uv = gl_FragCoord.xy/r; vec2 pix = vec2(min(resolution.x,resolution.y)/64.); //p = floor(p*pix)/pix; vec3 ta = vec3(0,-2,0); vec3 ro = vec3(2,-3,5); ro -= 1.0*(ta-ro); vec3 cdir = normalize(ta-ro); vec3 side = cross(cdir,vec3(0,1,0)); vec3 up = cross(side,cdir); float fov = 3.0; vec3 fcol = vec3(0); vec2 glv =floor(gl_FragCoord.xy/2.); #define bokashi 5 for(int i = 0;imaxdis)break; } vec3 col = vec3(0); vec3 sp = ro+rd*t; vec3 ld = normalize(vec3(0.5,1,-1)); vec3 vd = rd; vec3 nor = getNormal(sp); if(dabs(sp.z)&&(ana(sp)0.9)){ col = paperlight(sp,ld,nor,vd); } }; if(ueno(sp)

HURIN[ONLY GRAPHYICS]