[ae3ce4e] | 1 | |
---|
| 2 | #include <Python.h> |
---|
| 3 | #include "structmember.h" |
---|
| 4 | #include <stdio.h> |
---|
| 5 | #include <stdlib.h> |
---|
| 6 | #include <math.h> |
---|
| 7 | #include <time.h> |
---|
| 8 | |
---|
| 9 | #include "canvas.h" |
---|
| 10 | |
---|
| 11 | /// Error object for raised exceptions |
---|
| 12 | static PyObject * CCanvasError = NULL; |
---|
| 13 | |
---|
| 14 | |
---|
| 15 | // Class definition |
---|
| 16 | typedef struct { |
---|
| 17 | PyObject_HEAD |
---|
| 18 | /// Parameters |
---|
| 19 | PyObject * params; |
---|
| 20 | /// Model parameters |
---|
| 21 | CanvasParams canvas_pars; |
---|
| 22 | } CCanvas; |
---|
| 23 | |
---|
| 24 | |
---|
| 25 | static void |
---|
| 26 | CCanvas_dealloc(CCanvas* self) |
---|
| 27 | { |
---|
| 28 | canvas_dealloc(&(self->canvas_pars)); |
---|
| 29 | |
---|
| 30 | self->ob_type->tp_free((PyObject*)self); |
---|
| 31 | |
---|
| 32 | } |
---|
| 33 | |
---|
| 34 | static PyObject * |
---|
| 35 | CCanvas_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
---|
| 36 | { |
---|
| 37 | CCanvas *self; |
---|
| 38 | |
---|
| 39 | self = (CCanvas *)type->tp_alloc(type, 0); |
---|
| 40 | |
---|
| 41 | return (PyObject *)self; |
---|
| 42 | } |
---|
| 43 | |
---|
| 44 | static int |
---|
| 45 | CCanvas_init(CCanvas *self, PyObject *args, PyObject *kwds) |
---|
| 46 | { |
---|
| 47 | if (self != NULL) { |
---|
| 48 | srand(1001); |
---|
| 49 | |
---|
| 50 | // Create parameters |
---|
| 51 | self->params = PyDict_New(); |
---|
| 52 | canvas_init(&(self->canvas_pars)); |
---|
| 53 | } |
---|
| 54 | return 0; |
---|
| 55 | } |
---|
| 56 | |
---|
| 57 | static PyMemberDef CCanvas_members[] = { |
---|
| 58 | {"params", T_OBJECT, offsetof(CCanvas, params), 0, |
---|
| 59 | "Parameters"}, |
---|
| 60 | {NULL} /* Sentinel */ |
---|
| 61 | }; |
---|
| 62 | |
---|
| 63 | /** Read double from PyObject |
---|
| 64 | @param p PyObject |
---|
| 65 | @return double |
---|
| 66 | */ |
---|
| 67 | double CCanvas_readDouble(PyObject *p) { |
---|
| 68 | if (PyFloat_Check(p)==1) { |
---|
| 69 | return (double)(((PyFloatObject *)(p))->ob_fval); |
---|
| 70 | } else if (PyInt_Check(p)==1) { |
---|
| 71 | return (double)(((PyIntObject *)(p))->ob_ival); |
---|
| 72 | } else if (PyLong_Check(p)==1) { |
---|
| 73 | return (double)PyLong_AsLong(p); |
---|
| 74 | } else { |
---|
| 75 | return 0.0; |
---|
| 76 | } |
---|
| 77 | } |
---|
| 78 | |
---|
| 79 | |
---|
| 80 | /** |
---|
| 81 | * Function to call to evaluate model |
---|
| 82 | * @param args: input q or [q,phi] |
---|
| 83 | * @return: function value |
---|
| 84 | */ |
---|
| 85 | static PyObject * run(CCanvas *self, PyObject *args) { |
---|
| 86 | double q_value, phi_value; |
---|
| 87 | PyObject* pars; |
---|
| 88 | int npars; |
---|
| 89 | |
---|
| 90 | // Get input and determine whether we have to supply a 1D or 2D return value. |
---|
| 91 | if ( !PyArg_ParseTuple(args,"O",&pars) ) { |
---|
| 92 | PyErr_SetString(CCanvasError, |
---|
| 93 | "CCanvas.run expects a q value."); |
---|
| 94 | return NULL; |
---|
| 95 | } |
---|
| 96 | |
---|
| 97 | // Check params |
---|
| 98 | if( PyList_Check(pars)==1) { |
---|
| 99 | |
---|
| 100 | // Length of list should be 2 for I(q,phi) |
---|
| 101 | npars = PyList_GET_SIZE(pars); |
---|
| 102 | if(npars!=2) { |
---|
| 103 | PyErr_SetString(CCanvasError, |
---|
| 104 | "CCanvas.run expects a double or a list of dimension 2."); |
---|
| 105 | return NULL; |
---|
| 106 | } |
---|
| 107 | // We have a vector q, get the q and phi values at which |
---|
| 108 | // to evaluate I(q,phi) |
---|
| 109 | q_value = CCanvas_readDouble(PyList_GET_ITEM(pars,0)); |
---|
| 110 | phi_value = CCanvas_readDouble(PyList_GET_ITEM(pars,1)); |
---|
| 111 | // Skip zero |
---|
| 112 | if (q_value==0) { |
---|
| 113 | return Py_BuildValue("d",0.0); |
---|
| 114 | } |
---|
| 115 | return Py_BuildValue("d",canvas_intensity(&(self->canvas_pars),q_value,phi_value)); |
---|
| 116 | |
---|
| 117 | } else { |
---|
| 118 | |
---|
| 119 | // We have a scalar q, we will evaluate I(q) |
---|
| 120 | q_value = CCanvas_readDouble(pars); |
---|
| 121 | |
---|
| 122 | return Py_BuildValue("d",0.0); |
---|
| 123 | } |
---|
| 124 | } |
---|
| 125 | |
---|
| 126 | static PyObject * add(CCanvas *self, PyObject *args) { |
---|
| 127 | int id; |
---|
| 128 | |
---|
| 129 | id = canvas_add(&(self->canvas_pars),REALSPACE_SPHERE); |
---|
| 130 | return Py_BuildValue("i",id); |
---|
| 131 | } |
---|
| 132 | |
---|
| 133 | static PyObject * setParam(CCanvas *self, PyObject *args) { |
---|
| 134 | int id, par_id; |
---|
| 135 | double value; |
---|
| 136 | double radius; |
---|
| 137 | |
---|
| 138 | // Get input and determine whether we have to supply a 1D or 2D return value. |
---|
| 139 | if ( !PyArg_ParseTuple(args,"iid",&id, &par_id, &value) ) { |
---|
| 140 | PyErr_SetString(CCanvasError, |
---|
| 141 | "CCanvas.run expects a q value."); |
---|
| 142 | return NULL; |
---|
| 143 | } |
---|
| 144 | |
---|
| 145 | canvas_setParam(&(self->canvas_pars),id,par_id,value); |
---|
| 146 | |
---|
| 147 | return Py_BuildValue("i",id); |
---|
| 148 | } |
---|
| 149 | |
---|
| 150 | |
---|
| 151 | static PyMethodDef CCanvas_methods[] = { |
---|
| 152 | {"evaluate", (PyCFunction)run , METH_VARARGS, |
---|
| 153 | "Evaluate the model at a given Q"}, |
---|
| 154 | {"add", (PyCFunction)add , METH_VARARGS, "Add a shape object"}, |
---|
| 155 | {"setParam", (PyCFunction)setParam , METH_VARARGS, "Set a parameter"}, |
---|
| 156 | {NULL} |
---|
| 157 | }; |
---|
| 158 | |
---|
| 159 | static PyTypeObject CCanvasType = { |
---|
| 160 | PyObject_HEAD_INIT(NULL) |
---|
| 161 | 0, /*ob_size*/ |
---|
| 162 | "CCanvas", /*tp_name*/ |
---|
| 163 | sizeof(CCanvas), /*tp_basicsize*/ |
---|
| 164 | 0, /*tp_itemsize*/ |
---|
| 165 | (destructor)CCanvas_dealloc, /*tp_dealloc*/ |
---|
| 166 | 0, /*tp_print*/ |
---|
| 167 | 0, /*tp_getattr*/ |
---|
| 168 | 0, /*tp_setattr*/ |
---|
| 169 | 0, /*tp_compare*/ |
---|
| 170 | 0, /*tp_repr*/ |
---|
| 171 | 0, /*tp_as_number*/ |
---|
| 172 | 0, /*tp_as_sequence*/ |
---|
| 173 | 0, /*tp_as_mapping*/ |
---|
| 174 | 0, /*tp_hash */ |
---|
| 175 | 0, /*tp_call*/ |
---|
| 176 | 0, /*tp_str*/ |
---|
| 177 | 0, /*tp_getattro*/ |
---|
| 178 | 0, /*tp_setattro*/ |
---|
| 179 | 0, /*tp_as_buffer*/ |
---|
| 180 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ |
---|
| 181 | "CCanvas objects", /* tp_doc */ |
---|
| 182 | 0, /* tp_traverse */ |
---|
| 183 | 0, /* tp_clear */ |
---|
| 184 | 0, /* tp_richcompare */ |
---|
| 185 | 0, /* tp_weaklistoffset */ |
---|
| 186 | 0, /* tp_iter */ |
---|
| 187 | 0, /* tp_iternext */ |
---|
| 188 | CCanvas_methods, /* tp_methods */ |
---|
| 189 | CCanvas_members, /* tp_members */ |
---|
| 190 | 0, /* tp_getset */ |
---|
| 191 | 0, /* tp_base */ |
---|
| 192 | 0, /* tp_dict */ |
---|
| 193 | 0, /* tp_descr_get */ |
---|
| 194 | 0, /* tp_descr_set */ |
---|
| 195 | 0, /* tp_dictoffset */ |
---|
| 196 | (initproc)CCanvas_init, /* tp_init */ |
---|
| 197 | 0, /* tp_alloc */ |
---|
| 198 | CCanvas_new, /* tp_new */ |
---|
| 199 | }; |
---|
| 200 | |
---|
| 201 | |
---|
| 202 | static PyMethodDef module_methods[] = { |
---|
| 203 | {NULL} |
---|
| 204 | }; |
---|
| 205 | |
---|
| 206 | /** |
---|
| 207 | * Function used to add the model class to a module |
---|
| 208 | * @param module: module to add the class to |
---|
| 209 | */ |
---|
| 210 | void addCCanvas(PyObject *module) { |
---|
| 211 | PyObject *d; |
---|
| 212 | |
---|
| 213 | if (PyType_Ready(&CCanvasType) < 0) |
---|
| 214 | return; |
---|
| 215 | |
---|
| 216 | Py_INCREF(&CCanvasType); |
---|
| 217 | PyModule_AddObject(module, "CCanvas", (PyObject *)&CCanvasType); |
---|
| 218 | |
---|
| 219 | d = PyModule_GetDict(module); |
---|
| 220 | CCanvasError = PyErr_NewException("CCanvas.error", NULL, NULL); |
---|
| 221 | PyDict_SetItemString(d, "CCanvasError", CCanvasError); |
---|
| 222 | } |
---|
| 223 | |
---|