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Program thumbnail for "{props.program.title}"

Title	floorspeed
ID	6015593896214528
Created	10 years ago, 1421965240441
Updated	10 years ago, 1422297211423
Code	/*Click for a better texture that takes a long time./ frameRate(30); // Try frameRate(0); // Try a big canvas: https://www.khanacademy.org/computer-programming/floorspeed/6015593896214528?width=580&height=480 // Eric Balingit showed that eliminating global variables from a function makes that function much faster. (Try deleting a "this." from ren()) // Swax97 showed that composing the noise function with itself is more interesting than noise. (i.e. noise(noise(x))) var mode=0; // 1 for bilinear var ren=function(p,t,tm, wid,hei, mode, vo,yaw,pit){ var x,y,l=0,le, dx,dy,dz, vx,vy, dvx,dvy, rhei=1/hei, sy=this.sin(yaw), cy=this.cos(yaw), sp=this.sin(pit), cp=this.cos(pit), car, cag, cab; for(y=0; y<hei; y++){ dx=cy(cp - yrheisp); dy=sy(cp - yrheisp); dz=sp + (yrhei - 0.5)cp; var m=(dz>0?vo[2]:vo[2]-200)/dz; // if(m<0){continue;} // if(m<0){m=-m;} var cm=this.pow(0.9985, m), ca=(1 - cm)(1 - cm)0.015; cm=cm0x400\|0; ca=ca0x100000\|0; dvx=rheisym0x1000\|0; dvy=rhei-cym0x1000\|0; vx=(vo[0] + dxm)0x1000 - dvx(wid >> 1) & 0x7ffff; vy=(vo[1] + dym)0x1000 - dvy(wid >> 1) & 0x7ffff; car=7ca\|0; cag=8ca\|0; cab=9ca\|0; l=ywid << 2; le=l + (wid << 2); if(mode===0){ for(; l<le; l+=4, vx+=dvx, vy+=dvy){ // var c=tm[(vx >> 12 & 63) \| (vy >> 12 & 63) << 6]; var c=tm[(vx >> 12 & 127) \| (vy >> 5 & 0x3f80)]; p[l]=(c >> 16)cm + car >> 10; p[l+1]=(c >> 8 & 255)cm + cag >> 10; p[l+2]=(c & 255)cm + cab >> 10; } } if(mode===1){ for(; l<le; l+=4, vx+=dvx, vy+=dvy){ var xi=vx>>4&0x7fff, yi=vy>>4&0x7fff; var xf=xi&255, yf=yi&255; // xf=xfxf(0x300 - 2xf) >> 16; // yf=yfyf(0x300 - 2yf) >> 16; xi>>=8; yi>>=8; var xj=xi+1&127, yj=(yi+1&127) << 7; yi<<=7; var c0=tm[xi \| yi], c1=tm[xj \| yi], c2=tm[xi \| yj], c3=tm[xj \| yj]; p[l ]=((((c0>>16)(xf^255) + (c1>>16)xf)(yf^255)) + (((c2>>16)(xf^255) + (c3>>16)xf)yf) >> 16)cm + car >> 10; p[l+1]=((((c0>>8&255)(xf^255) + (c1>>8&255)xf)(yf^255)) + (((c2>>8&255)(xf^255) + (c3>>8&255)xf)yf) >> 16)cm + cag >> 10; p[l+2]=((((c0&255)(xf^255) + (c1&255)xf)(yf^255)) + (((c2&255)(xf^255) + (c3&255)xf)yf) >> 16)cm + cab >> 10; } } } }; var texf=function(x,y){ var j=1, k=0; if(y>0.67){ y-=0.67; y=3; x=x3 + 0.4; k=~~x; x-=k; k%=3; j--; }else{ y=1.5; } y=y2 - 1; x=x2 - 1; var h=pow(1 - xx, 1)pow(1 - yy, 1); var m=noise((noise(x0.5,y0.25,k11.45) - 0.5)14(j + 1) + x2, (noise(k11.45,x0.5,y0.25) - 0.5)14(j + 1) + y1, (1 - h)(1 - h)3); m+=(h - 0.2)0.1; for(var k=j2; k<3; k++){ m=m(3 - 2m); } m=(j0.5 + (1 - j)0.2)(m - 1) + 1; m=0.1 + 0.9pow(h + 0.02, 0.25); m=m<0.1?0.1:m>1?1:m; return (m85\|0)(0x20201 + j0x10000) - (random(16777216)&0x70707); }; var tex=[], td=0, texf2=function(x,y){ var j,k1,k=0,l, dx,dy,dx0,dy0, d0,d1, m,h, vx,vy,vz, m0,m1; var c=[0.11,0.22, 0.93,0.34, 0.35,0.76, 0.37,0.38, 0.19,0.60]; for(var i=0; i<3; i++){ d0=d1=1e3; for(j=0; j<c.length; j+=2){ for(l=0; l<9; l++){ dx=x + (i&1)1e-6 - c[j ] - 1 + (l%3); dy=y + (i>>1)1e-6 - c[j+1] - 1 + (l/3\|0); m=dxdx + dydy; // m=(x-c[j])(x-c[j]) + (y-c[j+1])(y-c[j+1]); if(m<d0){ d1=d0; k1=k; d0=m; dx0=dx; dy0=dy; k=j>>1; }else if(m<d1){ d1=m; k1=j>>1; } } } h=d0/d1; //h=h;//h=h;h=h;//h-=sqrt(d0)5; var m=noise((noise(dx0,dy0,k11.45) - 0.5)4(k + 1) + dx0(8 - k2), (noise(k11.45,dx0,dy0) - 0.5)4(k + 1) + dy0(8 - k2), hh); for(var l=[3,4,4,3,3][k]; l>0; l--){ m=m(3 - 2m); } // m=0.015; m1=(m + h0 - d020)1e-2; if(i===0){m0=m1;} if(i===1){vx=m1 - m0;} if(i===2){vy=m1 - m0;} } var n=1/sqrt(vxvx + vyvy + 1e-12); vx=-n; vy=-n; vz=1e-6n; // vz=sqrt(1e-12 - vxvx - vyvy); // var n=(vx0.3 + vy0.3 + vz0.9); // var n=(vx0.2 + vy0.2 + vz0.98); var n=(vx0.5 + vy0.5 + vz0.7); if(n<0){n=-0.3n;} var c0=[0x887744, 0x556655, 0xaa9988, 0xbbbbbb, 0x997755], c1=[0x884422, 0x889988, 0x777777, 0x3355aa, 0x557799]; var c=lerpColor(c0[k]\|255<<24, c1[k]\|255<<24, m); c=lerpColor(c,100,pow(h,10)0.5); c=lerpColor(0,c,0.8(n - 1) + 1); return c&0xffffff; }; mouseClicked=function(){td=0;texf=texf2;}; keyPressed=function(){mode^=1;}; var draw= function() { var ms=millis(); if(!loadPixels){ return; } var i; if(!tex.length){ for(var i=0; i<0x4000; i++){ tex[i]=((i&127)^(i>>7))0x20202\|0x303030; } } for(var i=0, k=td+1; i<k && td<0x4000; i++, td++){ if(!(i&7) && millis()-ms>30){ break; } if(texf!==texf2){ tex[td]=texf((td&127)/128, (td>>7)/128); continue; } var r=0,b=0,g=0; for(var j=0; j<16; j++){ // var c=this.texf((td&127)/128 + pow((j&3)-1.5,3)/(5123.3), // (td>>7)/128 + pow((j>>2)-1.5,3)/(5123.3)); var c=this.texf((td&127)/128 + (j&3)/512, (td>>7)/128 + (j>>2)/512); r+=sq(c>>16); g+=sq(c>>8&255); b+=sq(c&255); } tex[td]=sqrt(r/0x100000)256 << 16 \| sqrt(g/0x100000)256 << 8 \| sqrt(b/0x100000)256; } if(!this.imageData\|\|!this.imageData.data){ loadPixels(); } if(!this.imageData\|\|!this.imageData.data){ return; } var t=ms1e-5; ren(this.imageData.data, millis()2e-5, tex, width,height, mode, [noise(0,0,t)1e4, noise(0,t,0)1e4, noise(t1e1,0,0)2e2], //[10.5, 1.5, 100.5], // t20, t20 -mouseX + (noise(t20,12.3) - 0.5)30, (mouseY - height/2)0.5 + (noise(t20,12.3) - 0.5)30 ); // this.imageData.data[80201]=0; updatePixels(); text(millis()-ms+"\n"+ this.__frameRate.toFixed(1)+"\n\n"+ (td<0x4000?~~(100td/0x4000)+"%":""),20,20); }; fill(255,200,200); textSize(13);
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgLDK6eTXCgw
Votes	271
Spin-Offs	21
Type	PJS
Width	400
Height	400
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	Brian French
Author Name	mtrn
Author ID	kaid_686555315868069366831036
Author Profile Access	COACH

Archive Data

Added	6 months ago, 1739452546651
Updated	4 months ago, 1744845333853
Source Deleted	unknown