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BRP = eul2r(pi/6,pi/4,pi/3);
L1P = [-0.866;0;-0.5]; L2P = [0;0;-1];
L1B = BRP*L1P; L2B = BRP*L2P;

B = Ortho_basis(L1B,L2B);
P = Ortho_basis(L1P,L2P);

R = B1*inv(P);



function A = Ortho_basis(a1,a2)
    beta1 = a1;
    beta2 = a2-(dot(a2,beta1)/dot(beta1,beta1))*beta1;
    a1 = beta1/norm(beta1);
    a2 = beta2/norm(beta2);
    a3 = cross(a1,a2);
    A = [a1';a2';a3'];
end

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È»ºóÏëͨ¹ýL1PÓëL1B£¬L2PÓëL2B£¬ÕâÁ½¶ÔÏòÁ¿Ö®¼äµÄ¹ØÏµ·´Çó³öÆäÅ·À­Ðýת±ä»»¾ØÕóR£¬

·´Çó˼·ÊÇÓÉL1PºÍL2PµÃ³öP×ø±êϵÖеıê×¼Õý½»»ùP£¬ÓÉL1BºÍL2BµÃ³öB×ø±êϵÖеıê×¼Õý½»»ùB£¬È»ºóÓÉR*P=B     R=B*inv(P)Ëã³öR



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