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// Any three (non colinear) points define a circle // { .xy=center, .z=radius } vec3 getCircle( vec2 a, vec2 b, vec2 c ) { vec2 ba = b-a, cb = c-b, ac = a-c; float de = ba.xcb.y-ba.ycb.x; // zero if colinear vec2 ce = 0.5(a+b+vec2(ba.y,-ba.x)dot(ac,cb)/de); return vec3( ce,... show more

inigo quilez

51,962 subscribers

73,497 次观看 • 1 年前 •via X (Twitter)

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"Jupiter" vec2 p=(FC.rg*2.-r)/r.y,c,s;vec3 z=vec3(p,sqrt(1.-dot(p,p)));c=vec2(atan(z.x,z.z),z.y/=-.6),s=vec2(.2/dot(z-.6,z-.5)+sin(c.y*7.),.5*t);for(float f=8.;f<1e2;f/=.7)c+=sin(c.yx*f+s)/f;o+=z.z*.5*(cos(.3*s.x+vec4(.4,.6,.7,0)-sin(c.y/vec4(.34,.32,.3,1)))+1.);

"Jupiter" vec2 p=(FC.rg2.-r)/r.y,c,s;vec3 z=vec3(p,sqrt(1.-dot(p,p)));c=vec2(atan(z.x,z.z),z.y/=-.6),s=vec2(.2/dot(z-.6,z-.5)+sin(c.y7.),.5t);for(float f=8.;f<1e2;f/=.7)c+=sin(c.yxf+s)/f;o+=z.z.5(cos(.3*s.x+vec4(.4,.6,.7,0)-sin(c.y/vec4(.34,.32,.3,1)))+1.);

Xor

10,246 次观看 • 1 年前

void mainImage(out vec4 o, vec2 f){float c=cos(iTime),s=sin(iTime),a=iResolution.y,z=-a,i,d;f=2.*f/a-1.;vec3 p;for(o*=i;i++<1e2;o+=(sin(p.x/.2+z/.1+vec4(0,1,2,3))+1.)/d)p=vec3(f.x*c-z*s,f.y,z*c+f*s),a=length(p.xy)-.6,z+=d=.01+.3*abs(sqrt(a*a+p*p).z-.3);o=tanh(o*o/7e6);}

void mainImage(out vec4 o, vec2 f){float c=cos(iTime),s=sin(iTime),a=iResolution.y,z=-a,i,d;f=2.f/a-1.;vec3 p;for(o=i;i++<1e2;o+=(sin(p.x/.2+z/.1+vec4(0,1,2,3))+1.)/d)p=vec3(f.xc-zs,f.y,zc+fs),a=length(p.xy)-.6,z+=d=.01+.3abs(sqrt(aa+pp).z-.3);o=tanh(oo/7e6);}

Xor

65,358 次观看 • 1 年前

V2: vec2 p=(FC.xy-r*.5)/r.y*mat2(8,-6,6,8);for(float i;i<50.;o+=(cos(sin(i)*vec4(1,2,3,0))+1.)*exp(sin(i+i*t*.1))/length(max(p,p*vec2((3.+snoise2D(p+vec2(t/.1,i)))*.02,.5))))p+=cos(++i*i+t*.2+p.x*.02+i*vec2(11,9))*2.;o=tanh(.01*p.y*vec4(0,1,2,3)+o*o/1e4);

V2: vec2 p=(FC.xy-r.5)/r.ymat2(8,-6,6,8);for(float i;i<50.;o+=(cos(sin(i)vec4(1,2,3,0))+1.)exp(sin(i+it.1))/length(max(p,pvec2((3.+snoise2D(p+vec2(t/.1,i))).02,.5))))p+=cos(++ii+t.2+p.x.02+ivec2(11,9))2.;o=tanh(.01p.yvec4(0,1,2,3)+oo/1e4);

Xor

14,990 次观看 • 1 年前

order / chaos / order #つぶやきGLSL vec2 u=(FC.xy-.5*r)/r.x;for(int i=0;++i<17;)u=vec2(u.x,-u.y)/dot(u,u)+.4*u*rotate2D(t*.5);o+=(u.x+u.y)*9.;

order / chaos / order #つぶやきGLSL vec2 u=(FC.xy-.5r)/r.x;for(int i=0;++i<17;)u=vec2(u.x,-u.y)/dot(u,u)+.4u*rotate2D(t.5);o+=(u.x+u.y)9.;

sleeping

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#つぶやきGLSL for(float i,g,e,s;++i<99.;o.rgb+=hsv(e-g,.35,s/7e2)){vec3 p=vec3((FC.xy-.5*r)/r.y+vec2(0,.7),g);p.zx*=rotate2D(t*.3);s=1.5;for(int i;i++<9;p=vec3(2,5,2)-abs(abs(p)*e-vec3(3,4,4)))s*=e=max(1.,9./dot(p,p));g+=mod(length(p.xz),p.y)/s;s=log(s);}

#つぶやきGLSL for(float i,g,e,s;++i<99.;o.rgb+=hsv(e-g,.35,s/7e2)){vec3 p=vec3((FC.xy-.5r)/r.y+vec2(0,.7),g);p.zx=rotate2D(t.3);s=1.5;for(int i;i++<9;p=vec3(2,5,2)-abs(abs(p)e-vec3(3,4,4)))s*=e=max(1.,9./dot(p,p));g+=mod(length(p.xz),p.y)/s;s=log(s);}

Yohei Nishitsuji

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#つぶやきGLSL for(float i,g,e,s;++i<79.;){vec3 p=vec3((FC.xy-.5*r)/r.y*2.+vec2(0,1),g-.5);p.zx*=rotate2D(t*.5);s=1.;for(int i;i++<16;p=vec3(2,5,3)-abs(abs(p)*e-vec3(3,1.4,4.5)))s*=e=max(1.005,8./dot(p,p));g+=mod(length(p.xz),p.y)/s;s=log(s)/g;o.rgb+=hsv(.4*p.y,1.-p.y,s/2e4);}

#つぶやきGLSL for(float i,g,e,s;++i<79.;){vec3 p=vec3((FC.xy-.5r)/r.y2.+vec2(0,1),g-.5);p.zx=rotate2D(t.5);s=1.;for(int i;i++<16;p=vec3(2,5,3)-abs(abs(p)e-vec3(3,1.4,4.5)))s=e=max(1.005,8./dot(p,p));g+=mod(length(p.xz),p.y)/s;s=log(s)/g;o.rgb+=hsv(.4*p.y,1.-p.y,s/2e4);}

Yohei Nishitsuji

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Cycles, 285 chars #つぶやきGLSL for (s *= c; c++ < 200.; s += .003/abs(abs(length(y + 1.5* sin(c*.014+e) * vec2(cos(c*.4+e), sin(c*.4+e))) - l * (sin(c*.04+e) * .5+.5)*.2) + sin(c*.014+e) * .02) * (1.+cos(c*.03-e*4.+l*3.+vec4(0,1,2,0))));

Cycles, 285 chars #つぶやきGLSL for (s = c; c++ < 200.; s += .003/abs(abs(length(y + 1.5 sin(c.014+e) vec2(cos(c.4+e), sin(c.4+e))) - l * (sin(c.04+e) .5+.5).2) + sin(c.014+e) * .02) * (1.+cos(c.03-e4.+l*3.+vec4(0,1,2,0))));

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float i,e,R,s;vec3 q,p,d=vec3(FC.yx/r.x+vec2(.7),.8);for(q.yz--;i++<99.;){o+=.023-exp(-e*3e3)*.045*vec4(1,vec3(.7,.6,0));s=1.;p=q+=d*e*R*.15;p=vec3(log2(R=length(p)),exp(-p.z/R+.5),p.y-t*.5);for(e=--p.y;s<1.2e3;s+=s)e-=.055-abs(dot(cos(p. xxx*s),-cos(t-p*s)))/s*.15;}#つぶやきGLSL

float i,e,R,s;vec3 q,p,d=vec3(FC.yx/r.x+vec2(.7),.8);for(q.yz--;i++<99.;){o+=.023-exp(-e3e3).045vec4(1,vec3(.7,.6,0));s=1.;p=q+=deR.15;p=vec3(log2(R=length(p)),exp(-p.z/R+.5),p.y-t.5);for(e=--p.y;s<1.2e3;s+=s)e-=.055-abs(dot(cos(p. xxxs),-cos(t-ps)))/s.15;}#つぶやきGLSL

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"Caustics" in 146 chars of #GLSL vec2 p=FC.xy/r.y*2e1+t;for(float i;i++<8.;)p+=sin(p+t/.2+i)*.4,p*=mat2(6,-8,8,6)/9.;o=vec4(tanh(length(fwidth(sin(p*.3)/.1))),texture(b,FC.xy/r));

"Caustics" in 146 chars of #GLSL vec2 p=FC.xy/r.y2e1+t;for(float i;i++<8.;)p+=sin(p+t/.2+i).4,p=mat2(6,-8,8,6)/9.;o=vec4(tanh(length(fwidth(sin(p.3)/.1))),texture(b,FC.xy/r));

Xor

98,295 次观看 • 2 年前

for(float i,g,e,s;++i<99.;o.rgb+=.01-hsv(.1,g*.013,s/2e2)){vec3 p=vec3((FC.xy-.5*r)/r.y*7.+vec2(-2,8),g+4.)*rotate3D(sin(t*.5)*.005-1.8,vec3(0,9,-1));s=1.8;for(int i;i++<19;p=vec3(.05,4,-1)-abs(abs(p)*e-vec3(3.1,4,2.9)))s*=e=7.1/dot(p,p*.5);g+=p.y/s;s=log(s)/exp(e);}#つぶやきGLSL

for(float i,g,e,s;++i<99.;o.rgb+=.01-hsv(.1,g.013,s/2e2)){vec3 p=vec3((FC.xy-.5r)/r.y7.+vec2(-2,8),g+4.)rotate3D(sin(t.5).005-1.8,vec3(0,9,-1));s=1.8;for(int i;i++<19;p=vec3(.05,4,-1)-abs(abs(p)e-vec3(3.1,4,2.9)))s=e=7.1/dot(p,p*.5);g+=p.y/s;s=log(s)/exp(e);}#つぶやきGLSL

Yohei Nishitsuji

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float i,e,R,s;vec3 q,p,d=vec3(FC.xy/r*.4+vec2(-.2,.8),1);for(q.zy--;i++<80.;){o.rgb-=hsv(R,.5,exp(-e)*.01)-vec3(exp(-e*9.)*.04);s=7.,p=q+=d*e*R*.16;p=vec3(log2(R=length(p))-t*.5,exp(R-p.z/R*.1),atan(p.y,p.x));for(e=--p.y;s<1e3;s+=s)e+=dot(sin(p.xz*s),sin(p.xx*s))/s;}#つぶやきGLSL

float i,e,R,s;vec3 q,p,d=vec3(FC.xy/r.4+vec2(-.2,.8),1);for(q.zy--;i++<80.;){o.rgb-=hsv(R,.5,exp(-e).01)-vec3(exp(-e9.).04);s=7.,p=q+=deR*.16;p=vec3(log2(R=length(p))-t.5,exp(R-p.z/R.1),atan(p.y,p.x));for(e=--p.y;s<1e3;s+=s)e+=dot(sin(p.xzs),sin(p.xxs))/s;}#つぶやきGLSL

Yohei Nishitsuji

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for(float i,g,e,s;++i<99.;){vec3 p=vec3((FC.xy-.5*r)/r.y*4.+vec2(0,1),g-6.)*rotate3D(3.,vec3(0,9,-3));p.xz*=rotate2D(t*.3);s=6.;for(int i;i++<12;p=vec3(0,4.03,-1)-abs(abs(p)*e-vec3(3,4,3)))s*=e=7.5/dot(p,p*.47);g+=p.y*p.y/s*.3;s=log2(s)-g*.8;o.rgb+=hsv(.5,.1,s/7e2);}#つぶやきGLSL

for(float i,g,e,s;++i<99.;){vec3 p=vec3((FC.xy-.5r)/r.y4.+vec2(0,1),g-6.)rotate3D(3.,vec3(0,9,-3));p.xz=rotate2D(t.3);s=6.;for(int i;i++<12;p=vec3(0,4.03,-1)-abs(abs(p)e-vec3(3,4,3)))s=e=7.5/dot(p,p.47);g+=p.yp.y/s.3;s=log2(s)-g*.8;o.rgb+=hsv(.5,.1,s/7e2);}#つぶやきGLSL

Yohei Nishitsuji

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for(float i,g,e,s;++i<99.;o+=s/8e2){vec3 p=vec3((FC.xy-.5*r)/r.y*1.3+vec2(2.8,-.4),g-6.)*rotate3D(sin(t*.5)*.1-3.,vec3(2,40,-7));s=3.;for(int i;i++<16;p=vec3(0,4,-1)-abs(abs(p)*e-vec3(3,4,3)))s*=e=7.5/abs(dot(p,p*(.55+cos(t)*.005)+.3));g+=p.y/s-.0015;s=log2(s)-g*.5;}#つぶやきGLSL

for(float i,g,e,s;++i<99.;o+=s/8e2){vec3 p=vec3((FC.xy-.5r)/r.y1.3+vec2(2.8,-.4),g-6.)rotate3D(sin(t.5).1-3.,vec3(2,40,-7));s=3.;for(int i;i++<16;p=vec3(0,4,-1)-abs(abs(p)e-vec3(3,4,3)))s=e=7.5/abs(dot(p,p(.55+cos(t).005)+.3));g+=p.y/s-.0015;s=log2(s)-g.5;}#つぶやきGLSL

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#つぶやきGLSL for(float i,g,e,s;++i<65.;){vec3 p=vec3((FC.xy-.5*r)/r.x*.5+vec2(0,1.3),g-1.);p.zx*=rotate2D(t*.5+1.);s=1.8;for(int i;i++<18;p=vec3(0,4,.7)-abs(abs(p)*e-vec3(2.3,3.98+e*.12,4)))s*=e=5.4/dot(p,p*.5);g+=p.y/s;s=log2(s)+g*g;o.rgb+=.016-hsv(.25/p.y,p.z*.1,s/1e3);}

#つぶやきGLSL for(float i,g,e,s;++i<65.;){vec3 p=vec3((FC.xy-.5r)/r.x.5+vec2(0,1.3),g-1.);p.zx=rotate2D(t.5+1.);s=1.8;for(int i;i++<18;p=vec3(0,4,.7)-abs(abs(p)e-vec3(2.3,3.98+e.12,4)))s=e=5.4/dot(p,p.5);g+=p.y/s;s=log2(s)+gg;o.rgb+=.016-hsv(.25/p.y,p.z.1,s/1e3);}

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48,196 次观看 • 5 个月前