1 | /** c_models |
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2 | * |
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3 | * Module containing all SANS model extensions |
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4 | * |
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5 | * @author M.Doucet / UTK |
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6 | */ |
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7 | #include <Python.h> |
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8 | #include <parameters.hh> |
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9 | |
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10 | void addCCylinderModel(PyObject *module); |
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11 | extern "C" { |
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12 | void addCCoreShellCylinderModel(PyObject *module); |
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13 | void addCCoreShellModel(PyObject *module); |
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14 | void addCEllipsoidModel(PyObject *module); |
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15 | void addCSphereModel(PyObject *module); |
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16 | void addCEllipticalCylinderModel(PyObject *module); |
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17 | void addDisperser(PyObject *module); |
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18 | void addCGaussian(PyObject *module); |
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19 | void addCLorentzian(PyObject *module); |
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20 | } |
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21 | |
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22 | /** |
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23 | * Delete a dispersion model object |
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24 | */ |
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25 | void del_dispersion_model(void *ptr){ |
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26 | DispersionModel * disp = static_cast<DispersionModel *>(ptr); |
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27 | delete disp; |
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28 | return; |
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29 | } |
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30 | |
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31 | /** |
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32 | * Create a dispersion model as a python object |
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33 | */ |
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34 | PyObject * new_dispersion_model(PyObject *, PyObject *args) { |
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35 | DispersionModel *disp = new DispersionModel(); |
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36 | return PyCObject_FromVoidPtr(disp, del_dispersion_model); |
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37 | } |
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38 | |
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39 | |
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40 | /** |
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41 | * Delete a gaussian dispersion model object |
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42 | */ |
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43 | void del_gaussian_dispersion(void *ptr){ |
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44 | GaussianDispersion * disp = static_cast<GaussianDispersion *>(ptr); |
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45 | delete disp; |
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46 | return; |
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47 | } |
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48 | |
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49 | /** |
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50 | * Create a gaussian dispersion model as a python object |
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51 | */ |
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52 | PyObject * new_gaussian_dispersion(PyObject *, PyObject *args) { |
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53 | GaussianDispersion *disp = new GaussianDispersion(); |
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54 | return PyCObject_FromVoidPtr(disp, del_gaussian_dispersion); |
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55 | } |
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56 | |
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57 | /** |
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58 | * Delete an array dispersion model object |
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59 | */ |
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60 | void del_array_dispersion(void *ptr){ |
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61 | ArrayDispersion * disp = static_cast<ArrayDispersion *>(ptr); |
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62 | delete disp; |
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63 | return; |
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64 | } |
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65 | |
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66 | /** |
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67 | * Create an array dispersion model as a python object |
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68 | */ |
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69 | PyObject * new_array_dispersion(PyObject *, PyObject *args) { |
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70 | ArrayDispersion *disp = new ArrayDispersion(); |
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71 | return PyCObject_FromVoidPtr(disp, del_array_dispersion); |
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72 | } |
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73 | |
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74 | #define INVECTOR(obj,buf,len) \ |
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75 | do { \ |
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76 | int err = PyObject_AsReadBuffer(obj, (const void **)(&buf), &len); \ |
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77 | if (err < 0) return NULL; \ |
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78 | len /= sizeof(*buf); \ |
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79 | } while (0) |
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80 | |
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81 | /** |
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82 | * Sets weights from a numpy array |
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83 | */ |
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84 | PyObject * set_weights(PyObject *, PyObject *args) { |
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85 | PyObject *val_obj; |
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86 | PyObject *wei_obj; |
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87 | PyObject *disp; |
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88 | Py_ssize_t nval; |
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89 | Py_ssize_t nwei; |
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90 | double *values; |
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91 | double *weights; |
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92 | int i; |
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93 | |
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94 | if (!PyArg_ParseTuple(args, "OOO", &disp, &val_obj, &wei_obj)) return NULL; |
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95 | INVECTOR(val_obj, values, nval); |
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96 | INVECTOR(wei_obj, weights, nwei); |
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97 | |
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98 | // Sanity check |
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99 | if(nval!=nwei) return NULL; |
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100 | |
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101 | // Set the array pointers |
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102 | void *temp = PyCObject_AsVoidPtr(disp); |
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103 | DispersionModel * dispersion = static_cast<DispersionModel *>(temp); |
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104 | dispersion->set_weights(nval, values, weights); |
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105 | |
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106 | return Py_BuildValue("i",1); |
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107 | } |
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108 | |
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109 | |
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110 | |
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111 | /** |
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112 | * Define empty module |
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113 | */ |
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114 | static PyMethodDef module_methods[] = { |
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115 | {"new_dispersion_model", (PyCFunction)new_dispersion_model , METH_VARARGS, |
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116 | "Create a new DispersionModel object"}, |
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117 | {"new_gaussian_model", (PyCFunction)new_gaussian_dispersion, METH_VARARGS, |
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118 | "Create a new GaussianDispersion object"}, |
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119 | {"new_array_model", (PyCFunction)new_array_dispersion , METH_VARARGS, |
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120 | "Create a new ArrayDispersion object"}, |
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121 | {"set_dispersion_weights",(PyCFunction)set_weights , METH_VARARGS, |
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122 | "Create the dispersion weight arrays for an Array Dispersion object"}, |
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123 | {NULL} |
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124 | }; |
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125 | |
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126 | |
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127 | #ifndef PyMODINIT_FUNC /* declarations for DLL import/export */ |
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128 | #define PyMODINIT_FUNC void |
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129 | #endif |
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130 | PyMODINIT_FUNC |
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131 | initc_models(void) |
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132 | { |
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133 | PyObject* m; |
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134 | |
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135 | m = Py_InitModule3("c_models", module_methods, |
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136 | "C extension module for SANS scattering models."); |
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137 | |
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138 | addCCylinderModel(m); |
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139 | addCCoreShellCylinderModel(m); |
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140 | addCCoreShellModel(m); |
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141 | addCEllipsoidModel(m); |
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142 | addCSphereModel(m); |
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143 | addCEllipticalCylinderModel(m); |
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144 | addDisperser(m); |
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145 | addCGaussian(m); |
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146 | addCLorentzian(m); |
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147 | |
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148 | } |
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