| 722 | this.attributes;if(a.position){var b=a.position.array;if(void 0===a.normal)this.addAttribute("normal",new THREE.BufferAttribute(new Float32Array(b.length),3));else for(var c=a.normal.array,d=0,e=c.length;d<e;d++)c[d]=0;var c=a.normal.array,f,g,h,k=new THREE.Vector3,n=new THREE.Vector3,p=new THREE.Vector3,q=new THREE.Vector3,m=new THREE.Vector3;if(a.index)for(var r=a.index.array,t=0<this.offsets.length?this.offsets:[{start:0,count:r.length,index:0}],s=0,u=t.length;s<u;++s){e=t[s].start;f=t[s].count; |
| 723 | for(var v=t[s].index,d=e,e=e+f;d<e;d+=3)f=3*(v+r[d]),g=3*(v+r[d+1]),h=3*(v+r[d+2]),k.fromArray(b,f),n.fromArray(b,g),p.fromArray(b,h),q.subVectors(p,n),m.subVectors(k,n),q.cross(m),c[f]+=q.x,c[f+1]+=q.y,c[f+2]+=q.z,c[g]+=q.x,c[g+1]+=q.y,c[g+2]+=q.z,c[h]+=q.x,c[h+1]+=q.y,c[h+2]+=q.z}else for(d=0,e=b.length;d<e;d+=9)k.fromArray(b,d),n.fromArray(b,d+3),p.fromArray(b,d+6),q.subVectors(p,n),m.subVectors(k,n),q.cross(m),c[d]=q.x,c[d+1]=q.y,c[d+2]=q.z,c[d+3]=q.x,c[d+4]=q.y,c[d+5]=q.z,c[d+6]=q.x,c[d+7]=q.y, |
| 724 | c[d+8]=q.z;this.normalizeNormals();a.normal.needsUpdate=!0}},computeTangents:function(){function a(a,b,c){q.fromArray(d,3*a);m.fromArray(d,3*b);r.fromArray(d,3*c);t.fromArray(f,2*a);s.fromArray(f,2*b);u.fromArray(f,2*c);v=m.x-q.x;y=r.x-q.x;G=m.y-q.y;w=r.y-q.y;K=m.z-q.z;x=r.z-q.z;D=s.x-t.x;E=u.x-t.x;A=s.y-t.y;B=u.y-t.y;F=1/(D*B-E*A);R.set((B*v-A*y)*F,(B*G-A*w)*F,(B*K-A*x)*F);H.set((D*y-E*v)*F,(D*w-E*G)*F,(D*x-E*K)*F);k[a].add(R);k[b].add(R);k[c].add(R);n[a].add(H);n[b].add(H);n[c].add(H)}function b(a){ya.fromArray(e, |
| 725 | 3*a);P.copy(ya);Fa=k[a];la.copy(Fa);la.sub(ya.multiplyScalar(ya.dot(Fa))).normalize();ma.crossVectors(P,Fa);za=ma.dot(n[a]);Ga=0>za?-1:1;h[4*a]=la.x;h[4*a+1]=la.y;h[4*a+2]=la.z;h[4*a+3]=Ga}if(void 0===this.attributes.index||void 0===this.attributes.position||void 0===this.attributes.normal||void 0===this.attributes.uv)console.warn("Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");else{var c=this.attributes.index.array,d=this.attributes.position.array, |
| 726 | e=this.attributes.normal.array,f=this.attributes.uv.array,g=d.length/3;void 0===this.attributes.tangent&&this.addAttribute("tangent",new THREE.BufferAttribute(new Float32Array(4*g),4));for(var h=this.attributes.tangent.array,k=[],n=[],p=0;p<g;p++)k[p]=new THREE.Vector3,n[p]=new THREE.Vector3;var q=new THREE.Vector3,m=new THREE.Vector3,r=new THREE.Vector3,t=new THREE.Vector2,s=new THREE.Vector2,u=new THREE.Vector2,v,y,G,w,K,x,D,E,A,B,F,R=new THREE.Vector3,H=new THREE.Vector3,C,T,Q,O,S;0===this.drawcalls.length&& |
| 727 | this.addDrawCall(0,c.length,0);var X=this.drawcalls,p=0;for(T=X.length;p<T;++p){C=X[p].start;Q=X[p].count;var Y=X[p].index,g=C;for(C+=Q;g<C;g+=3)Q=Y+c[g],O=Y+c[g+1],S=Y+c[g+2],a(Q,O,S)}var la=new THREE.Vector3,ma=new THREE.Vector3,ya=new THREE.Vector3,P=new THREE.Vector3,Ga,Fa,za,p=0;for(T=X.length;p<T;++p)for(C=X[p].start,Q=X[p].count,Y=X[p].index,g=C,C+=Q;g<C;g+=3)Q=Y+c[g],O=Y+c[g+1],S=Y+c[g+2],b(Q),b(O),b(S)}},computeOffsets:function(a){var b=a;void 0===a&&(b=65535);Date.now();a=this.attributes.index.array; |