core_shell_microgelscostrafo411magnetic_modelrelease_v0.94release_v0.95ticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
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[5c1d341] | 1 | double form_volume(double radius); |
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| 2 | |
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| 3 | double Iq(double q, |
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| 4 | double radius, |
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| 5 | double mass_dim, |
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| 6 | double cutoff_length); |
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| 7 | |
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| 8 | double Iqxy(double qx, double qy, |
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| 9 | double radius, |
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| 10 | double mass_dim, |
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| 11 | double cutoff_length); |
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| 12 | |
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| 13 | |
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| 14 | static double _mass_fractal_kernel(double q, |
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| 15 | double radius, |
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| 16 | double mass_dim, |
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| 17 | double cutoff_length) |
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| 18 | { |
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| 19 | |
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| 20 | //calculate P(q) for the spherical subunits; not normalized |
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| 21 | //double pq = pow((3.0*(sin(q*radius) - q*radius*cos(q*radius))/pow((q*radius),3)),2); |
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| 22 | double pq = J1c(q*radius); |
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| 23 | |
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| 24 | //pq = 1.0; |
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| 25 | |
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| 26 | //calculate S(q) |
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| 27 | double mmo = mass_dim-1.0; |
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| 28 | double sq = exp(lanczos_gamma(mmo))*sin((mmo)*atan(q*cutoff_length)); |
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| 29 | sq *= pow(cutoff_length, mmo); |
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| 30 | sq /= pow((1.0 + (q*cutoff_length)*(q*cutoff_length)),(mmo/2.0)); |
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| 31 | sq /= q; |
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| 32 | |
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| 33 | //sq = 1.0; |
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| 34 | |
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| 35 | //combine and return |
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| 36 | double result = pq * sq; |
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| 37 | |
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| 38 | return result; |
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| 39 | } |
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| 40 | double form_volume(double radius){ |
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| 41 | |
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| 42 | return 1.333333333333333*M_PI*radius*radius*radius; |
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| 43 | } |
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| 44 | |
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| 45 | double Iq(double q, |
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| 46 | double radius, |
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| 47 | double mass_dim, |
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| 48 | double cutoff_length) |
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| 49 | { |
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| 50 | return _mass_fractal_kernel(q, |
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| 51 | radius, |
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| 52 | mass_dim, |
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| 53 | cutoff_length); |
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| 54 | } |
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| 55 | |
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| 56 | // Iqxy is never called since no orientation or magnetic parameters. |
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| 57 | double Iqxy(double qx, double qy, |
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| 58 | double radius, |
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| 59 | double mass_dim, |
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| 60 | double cutoff_length) |
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| 61 | { |
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| 62 | double q = sqrt(qx*qx + qy*qy); |
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| 63 | return _mass_fractal_kernel(q, |
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| 64 | radius, |
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| 65 | mass_dim, |
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| 66 | cutoff_length); |
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| 67 | } |
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| 68 | |
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