//por jorge2017a2...JFP //basic landscape 2d v2 ----------->>>-28-abril-2022 //referencia //https://iquilezles.org/articles/distfunctions2d /// #define antialiasing(n) n/min(iResolution.y,iResolution.x) #define S(d,b) smoothstep(antialiasing(0.8),b,d) #define S2(d,b) smoothstep(8.0*antialiasing(2.0),b,d) #define PI 3.14159265 #define TWO_PI 6.28318530 float opRep1D( float p, float c ) { float q = mod(p+0.5*c,c)-0.5*c; return q ;} float intersectSDF(float distA, float distB) { return max(distA, distB);} float unionSDF(float distA, float distB) { return min(distA, distB);} float differenceSDF(float distA, float distB) { return max(distA, -distB);} vec3 DrawFigBorde(vec3 pColObj, vec3 colOut, float distObj ) { colOut = mix(colOut,pColObj ,S2( distObj,0.0)); colOut = mix(colOut,vec3(0.0) ,S2(abs( distObj)-0.005,0.0)); return colOut; } vec3 DrawFigBordeCol(vec3 pColObj, vec3 colOut, float distObj , vec3 colBorde ) { colOut = mix(colOut,pColObj ,S2( distObj,0.0)); colOut = mix(colOut,colBorde ,S2(abs( distObj)-0.01,0.0)); return colOut; } float sdBox( in vec2 p, in vec2 b ) { vec2 d = abs(p)-b; return length(max(d,0.0)) + min(max(d.x,d.y),0.0); } float sdCircle( vec2 p, float r ) { return length(p) - r;} vec3 PisoOnda(vec2 uv,vec3 colIn, vec3 colOut ) { float y=uv.y + sin(uv.x*5.)*0.1; vec3 col= DrawFigBorde(colIn, colOut, y); return col; } float PisoOnda(vec2 uv ) { float y=uv.y + sin(uv.x*5.)*0.1; return y; } vec3 PisoPlano(vec2 uv,vec3 colIn, vec3 colOut ) { float y= uv.y+ 1.0; vec3 col= DrawFigBorde(colIn-(0.5+uv.y/8.0), colOut, y); return col; } vec3 PisoPlanoIzq(vec2 uv,vec3 colIn, vec3 colOut ) { float y= uv.y+uv.x+1.0; vec3 col= DrawFigBorde(colIn, colOut, y); return col; } vec3 PisoPlanoDer(vec2 uv,vec3 colIn, vec3 colOut ) { float y= uv.y-uv.x+1.0; vec3 col= DrawFigBorde(colIn, colOut, y); return col; } float PisoPlanoIzqFl(vec2 uv ) { //float y= uv.y+uv.x+1.0; float onda= uv.y+uv.x+sin(uv.x*10.)*0.2; float y=onda; return y; } float PisoPlanoDerFl(vec2 uv) { //float y= uv.y-uv.x+1.0; float onda= uv.y-uv.x+sin(uv.x*10.0)*0.2; float y=onda; return y; } vec3 PisoPlanoLinea(vec2 uv,vec3 colIn, vec3 colOut ) { float y1= uv.y+ 0.25; float y2= uv.y- 0.25; float dif= differenceSDF(y2,y1); vec3 col= DrawFigBorde(colIn, colOut, dif); return col; } vec3 HacerCascada(vec2 uv, vec3 colOut) { float t=iTime*10.0; uv.y= opRep1D(uv.y, 1.0 ); uv.y -= sin(uv.x*5.+t)*0.2; float p1=uv.y-0.1; float p2=uv.y+0.2; float dif= differenceSDF(p1, p2); vec3 col= DrawFigBorde(vec3(0.2,0.2,0.8), colOut, dif); return col; } float HacerCascadaFlo(vec2 uv) { float t=0.0; uv.y= opRep1D(uv.y, 1.0 ); uv.y -= sin(uv.x*5.)*0.2+t; float p1=uv.y-0.1; float p2=uv.y+0.2; float dif= differenceSDF(p1, p2); return dif; } vec3 HacerCascadaTriangulo(vec2 uv, vec3 colOut) { float t=iTime*10.0; vec2 uv0=uv; float dif= HacerCascadaFlo(uv+vec2(0.0+0.125*sin(t*20.0),t)); float d1= PisoPlanoIzqFl(vec2(uv0.x, -uv0.y+5.0)); float d2= PisoPlanoDerFl(vec2(uv0.x, -uv0.y+5.0)); float d3= uv.y-10.0; float uni= unionSDF(d1, d2); //inclinados float inter= differenceSDF(d3,uni); // dif= differenceSDF(dif,uni); vec3 col= DrawFigBorde(vec3(1.0), colOut, inter); col= DrawFigBorde(vec3(0.2,0.0,1.0), col, dif); return col; } vec3 CascadaBloque(vec2 uv, vec3 colOut) { float d1= sdBox(uv,vec2(3.0,5.0) ); //grande float d2= sdBox(uv,vec2(2.5,4.5) ); //chico float dif1= differenceSDF(d1, d2); float t=iTime; float d3=HacerCascadaFlo(uv+vec2(0.0+0.125*sin(t*20.0),t)); float dif2= intersectSDF(d3,d2); vec3 col= DrawFigBorde(vec3(1.0), colOut, d2); col= DrawFigBorde(vec3(0.0), col, dif1); col= DrawFigBorde(vec3(0.2,0.2,0.8), col, dif2); return col; } vec3 nubes(vec2 uv, vec3 colOut) { vec3 col; float d1,d2,d3; d1= sdCircle(uv, 1.0 ); d2= sdCircle(uv-vec2(1.5,0.0), 1.5 ); d3= sdCircle(uv-vec2(3.0,-0.25), 1.2 ); float duni= unionSDF(d1, d2); duni= unionSDF(duni,d3); col= DrawFigBorde(vec3(1.0), colOut, duni); return col; } vec3 Hacermonte(vec2 uv,vec3 colIn, vec3 colOut) { float x=uv.x; float xx=x+2.0*cos(x*0.5); float fx2=3.0*sin(xx*0.5)/xx; float monte=uv.y+fx2; vec3 col= DrawFigBorde(colIn, colOut, monte); //cafe return col; } vec3 BloqueSimple(vec2 uv, vec3 colOut) { float d1= sdBox(uv-vec2(0.0,2.5),vec2(2.5,0.5) ); //grande sup float d2= sdBox(uv,vec2(2.0,3.0) ); //grande inf float d3= PisoOnda(uv-vec2(0.0,2.5)); d1= differenceSDF(d1,d3); vec3 col; col= DrawFigBorde(vec3(0.6,1.2,0.3)*0.8-(uv.x/7.0), colOut, d2); col= DrawFigBorde(vec3(0.8,0.2,0.3)*0.8-(uv.x/8.0), col, d1); return col; } vec3 Hacermontev2(vec2 uv,vec3 colIn, vec3 colOut) { float x=uv.x; float xx=x+cos(x*0.25); float fx2=3.0*sin(xx+cos(xx*1.5)); float monte=uv.y+fx2; vec3 col= DrawFigBorde(colIn-(-0.12+uv.y/8.0), colOut, monte); //cafe return col; } void mainImage( out vec4 fragColor, in vec2 fragCoord ) { vec2 uv = -1.0 + 2.0 * fragCoord.xy/iResolution.xy; uv.x *= iResolution.x/iResolution.y; uv-=vec2(0.0,-0.5); float t=iTime; //float t0=mod(t,15.0); vec3 col=vec3(0.0,0.1,0.8); uv.x+=t; uv.x= opRep1D(uv.x, 5.0 ); float esc=8.0; uv*=esc; float trep=t*0.25; vec2 uv0=uv; col= Hacermonte(uv-vec2(0.0,10.0),vec3(0.7,0.35,0.2), col); col= Hacermonte(uv-vec2(10.0,8.0),vec3(0.7,0.35,0.2)*0.8, col); col= Hacermontev2(uv-vec2(5.0,4.0),vec3(0.7,0.35,0.2)*0.6, col); col= HacerCascadaTriangulo(uv-vec2(0.0,3.0),col); uv=uv0; uv.y-=4.0+1.0*sin(t*0.125); uv.x= opRep1D(uv.x+t, 20.0 ); col= nubes(uv-vec2(4.0,7.0),col); col= nubes(uv-vec2(-8.0,5.0),col); uv=uv0; col= PisoOnda(uv+vec2(0.0,-0.2),vec3(0.0),col); //pasto col= PisoOnda(uv,vec3(0.2,0.8,0.2),col); //pasto col= PisoPlano(uv,vec3(0.1,0.46,0.2), col ); col= PisoPlanoLinea(uv-vec2(0.0,-0.8),vec3(0.5,0.4,0.3), col); col= BloqueSimple(uv-vec2(10.0,2.0),col); col=pow(col, vec3(0.554545)); fragColor = vec4(col,1.0); }