ya.crossVectors(Ga,Da);Ha=ya.dot(l[a]);Ja=0>Ha?-1:1;h[4*a]=T.x;h[4*a+1]=T.y;h[4*a+2]=T.z;h[4*a+3]=Ja}if(void0===this.attributes.index||void0===this.attributes.position||void0===this.attributes.normal||void0===this.attributes.uv)console.warn("Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");else{varc=this.attributes.index.array,d=this.attributes.position.array,e=this.attributes.normal.array,f=this.attributes.uv.array,g=d.length/3;void0===this.attributes.tangent&&
l[a].add(ca);l[b].add(ca);l[c].add(ca)}functionb(a){aa.x=e[3*a];aa.y=e[3*a+1];aa.z=e[3*a+2];Ga.copy(aa);Da=k[a];T.copy(Da);T.sub(aa.multiplyScalar(aa.dot(Da))).normalize();ya.crossVectors(Ga,Da);Ha=ya.dot(l[a]);Ja=0>Ha?-1:1;h[4*a]=T.x;h[4*a+1]=T.y;h[4*a+2]=T.z;h[4*a+3]=Ja}if(void0===this.attributes.index||void0===this.attributes.position||void0===this.attributes.normal||void0===this.attributes.uv)console.warn("Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");