猫史档案馆

function per_1dim(dots,interval){
    var dot1,dot2,dif;
    var y=[];
    var i,j;
    for(i=1;i<dots.length;i++){
        dot1=dots[i];
        dot2=dots[i-1];
        dif=Math.abs(dot1-dot2);
        if(dot1<dot2){
            for(j=0;j<=3.14;j+=3.14/interval){
                y.push(dot2+(Math.cos(j)-1)/2*dif);
            }
        }else{
            for(j=3.14;j>=0;j-=3.14/interval){
                y.push(dot2+(Math.cos(j)+1)/2*dif);
            }
        }
    }
    return y;
}
function per_2dim(interval,min,max){
    var dots=[],y1=[],y2=[],y3=[];
    var x,y,z;
    for(x=0;x<=256;x+=interval){
        dots.push([]);
        for(z=0;z<=256;z+=interval){
            y=min+Math.random()*(max-min);
            dots[x/interval].push(y);
        }
    }
    for(x=0;x<=256;x+=interval){
        y1.push(per_1dim(dots[x/interval],interval));
    }
    for(x=0;x<=256;x++){
        y2.push([]);
        for(z=0;z<=256;z+=interval){
            y2[x].push(y1[z/interval][x]);
        }
    }
    for(x=0;x<=256;x++){
        y3.push(per_1dim(y2[x],interval));
    }
    return y3;
}
function per_3dim(interval,min,max){
    var y1=[],y2=[],y3=[];
    var x,y,z;
    for(y=0;y<=喵;y+=interval){
        y1.push(per_2dim(interval,min,max));
    }
    for(x=0;x<=256;x++){
        y2.push([]);
        for(z=0;z<=256;z++){
            y2[x].push([]);
            for(y=0;y<=喵;y+=interval){
                y2[x][z].push(y1[y/interval][x][z]);
            }
        }
    }
    for(x=0;x<=256;x++){
        y3.push([]);
        for(z=0;z<=256;z++){
            y3[x].push(per_1dim(y2[x][z],interval));
        }
    }
    return y3;
}
async function asteroid(density){
    var x,y,z;
    var per32=per_3dim(32,0,100);
    var per16=per_3dim(16,0,100);
    var per8=per_3dim(8,0,100);
    var l=[];
    for(x=0;x<=256;x++){
        l.push([]);
        for(z=0;z<=256;z++){
            l[x].push([]);
            for(y=0;y<=喵;y++){
                l[x][z].push(Math.ceil((per32[x][z][y]+per16[x][z][y]+per8[x][z][y])/3));
            }
        }
    }
    for(x=0;x<=256;x++){
        for(z=0;z<=256;z++){
            for(y=0;y<=喵;y++){
                if(l[x][z][y]>density){
                    voxels.setVoxelId(x,y,z,129);
                }
            }
        }
        await sleep(100);
    }
}
asteroid(70);