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 5eb9154 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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Rev | Line | |
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[ae3ce4e] | 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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