hkl/hkl-engine-2c.c

   1 /* This file is part of the hkl library.
   2  *
   3  * The hkl library is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * The hkl library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with the hkl library.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  * Copyright (C) 2003-2017 Synchrotron SOLEIL
  17  *                         L'Orme des Merisiers Saint-Aubin
  18  *                         BP 48 91192 GIF-sur-YVETTE CEDEX
  19  *
  20  * Authors: Picca Frédéric-Emmanuel <picca@synchrotron-soleil.fr>
  21  */
  22 #include "hkl-macros-private.h"
  23 #include "hkl-factory-private.h"        // for autodata_factories_, etc
  24 #include "hkl-pseudoaxis-private.h"     // for hkl_engine_list_add, etc
  25 #include "hkl/ccan/array_size/array_size.h"
  26
  27 #define OMEGA "omega"
  28 #define TTH "tth"
  29
  30 #define HKL_GEOMETRY_TWOC_DESCRIPTION                                   \
  31         "+ xrays source fix allong the :math:`\\vec{x}` direction (1, 0, 0)\n" \
  32         "+ 1 axes for the sample\n"                                     \
  33         "\n"                                                            \
  34         "  + **" OMEGA "** : rotating around the :math:`-\\vec{y}` direction (0, -1, 0)\n" \
  35         "\n"                                                            \
  36         "+ 1 axis for the detector\n"                                   \
  37         "\n"                                                            \
  38         "  + **" TTH "** : rotation around the :math:`-\\vec{y}` direction (0, -1, 0)\n"
  39
  40 static const char* hkl_geometry_twoC_axes[] = {OMEGA, TTH};
  41
  42 static HklGeometry *hkl_geometry_new_twoC(const HklFactory *factory)
  43 {
  44         HklGeometry *self = hkl_geometry_new(factory, &hkl_geometry_operations_defaults);
  45         HklHolder *h;
  46
  47         h = hkl_geometry_add_holder(self);
  48         hkl_holder_add_rotation(h, OMEGA, 0, -1, 0, &hkl_unit_angle_deg);
  49
  50         h = hkl_geometry_add_holder(self);
  51         hkl_holder_add_rotation(h, TTH, 0, -1, 0, &hkl_unit_angle_deg);
  52
  53         return self;
  54 }
  55
  56 static HklEngineList *hkl_engine_list_new_twoC(const HklFactory *factory)
  57 {
  58         HklEngineList *self = hkl_engine_list_new();
  59
  60         return self;
  61 }
  62
  63 REGISTER_DIFFRACTOMETER(twoC, "TwoC", HKL_GEOMETRY_TWOC_DESCRIPTION);