ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalccostrafo411magnetic_scattrelease-4.1.1release-4.1.2release-4.2.2release_4.0.1ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload
Last change
on this file since 68dada4 was
ae3ce4e,
checked in by Mathieu Doucet <doucetm@…>, 17 years ago
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Moving sansmodels to trunk
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-
Property mode set to
100644
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File size:
931 bytes
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1 | /** |
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2 | * Scattering model for a sphere |
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3 | * @author: Mathieu Doucet / UTK |
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4 | */ |
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5 | |
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6 | #include "sphere.h" |
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7 | #include "libSphere.h" |
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8 | #include <math.h> |
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9 | |
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10 | |
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11 | /** |
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12 | * Function to evaluate 1D scattering function |
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13 | * @param pars: parameters of the sphere |
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14 | * @param q: q-value |
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15 | * @return: function value |
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16 | */ |
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17 | double sphere_analytical_1D(SphereParameters *pars, double q) { |
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18 | double dp[5]; |
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19 | |
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20 | dp[0] = pars->scale; |
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21 | dp[1] = pars->radius; |
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22 | dp[2] = pars->contrast; |
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23 | dp[3] = pars->background; |
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24 | |
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25 | return SphereForm(dp, q); |
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26 | } |
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27 | |
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28 | /** |
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29 | * Function to evaluate 2D scattering function |
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30 | * @param pars: parameters of the sphere |
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31 | * @param q: q-value |
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32 | * @return: function value |
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33 | */ |
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34 | double sphere_analytical_2D(SphereParameters *pars, double q, double phi) { |
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35 | return sphere_analytical_1D(pars,q); |
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36 | } |
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37 | |
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38 | double sphere_analytical_2DXY(SphereParameters *pars, double qx, double qy){ |
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39 | return sphere_analytical_1D(pars,sqrt(qx*qx+qy*qy)); |
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40 | } |
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