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P.subtract(e,t,N),P.magnitudeSquared(N)},P.normalize=function(e,t){var n=P.magnitude(e);return t.x=e.x/n,t.y=e.y/n,t},P.dot=function(e,t){return e.x*t.x+e.y*t.y},P.multiplyComponents=function(e,t,n){return n.x=e.x*t.x,n.y=e.y*t.y,n},P.divideComponents=function(e,t,n){return n.x=e.x/t.x,n.y=e.y/t.y,n},P.add=function(e,t,n){return n.x=e.x+t.x,n.y=e.y+t.y,n},P.subtract=function(e,t,n){return n.x=e.x-t.x,n.y=e.y-t.y,n},P.multiplyByScalar=function(e,t,n){return n.x=e.x*t,n.y=e.y*t,n},P.divideByScalar=function(e,t,n){return n.x=e.x/t,n.y=e.y/t,n},P.negate=function(e,t){return t.x=-e.x,t.y=-e.y,t},P.abs=function(e,t){return t.x=Math.abs(e.x),t.y=Math.abs(e.y),t};var U=new P;P.lerp=function(e,t,n,a){return P.multiplyByScalar(t,n,U),a=P.multiplyByScalar(e,1-n,a),P.add(U,a,a)};var L=new P,k=new P;P.angleBetween=function(e,t){return P.normalize(e,L),P.normalize(t,k),V.CesiumMath.acosClamped(P.dot(L,k))};var W=new P;P.mostOrthogonalAxis=function(e,t){var n=P.normalize(e,W);return 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