| 1 | const t=(t,M,r,n,e)=>h(t[1],M[1],r[1],n[1],e).map((h=>a(t[0],M[0],r[0],n[0],h))),a=(t,a,h,M,r)=>r*(3*a*Math.pow(r-1,2)+r*(-3*h*r+3*h+M*r))-t*Math.pow(r-1,3),h=(t,a,h,r,n)=>M((r-=n)-3*(h-=n)+3*(a-=n)-(t-=n),3*h-6*a+3*t,3*a-3*t,t).filter((t=>t>=0&&t<=1)),M=(t,a,h,M)=>{if(0===t)return((t,a,h)=>{const M=a*a-4*t*h;return M<0?[]:[(-a+Math.sqrt(M))/(2*t),(-a-Math.sqrt(M))/(2*t)]})(a,h,M);const r=(3*(h/=t)-(a/=t)*a)/3,n=(2*a*a*a-9*a*h+27*(M/=t))/27;if(0===r)return[Math.pow(-n,1/3)];if(0===n)return[Math.sqrt(-r),-Math.sqrt(-r)];const e=Math.pow(n/2,2)+Math.pow(r/3,3);if(0===e)return[Math.pow(n/2,.5)-a/3];if(e>0)return[Math.pow(-n/2+Math.sqrt(e),1/3)-Math.pow(n/2+Math.sqrt(e),1/3)-a/3];const u=Math.sqrt(Math.pow(-r/3,3)),o=Math.acos(-n/(2*Math.sqrt(Math.pow(-r/3,3)))),s=2*Math.pow(u,1/3);return[s*Math.cos(o/3)-a/3,s*Math.cos((o+2*Math.PI)/3)-a/3,s*Math.cos((o+4*Math.PI)/3)-a/3]};export{t as g} |