src/hkl-axis.c

   1 #include <stdlib.h>
   2 #include <math.h>
   3
   4 #include <hkl/hkl-axis.h>
   5 #include <hkl/hkl-quaternion.h>
   6
   7 /*****************/
   8 /* HklAxisConfig */
   9 /*****************/
  10
  11 static HklAxisConfig hkl_axis_config_default = {{-M_PI, M_PI}, 0., 1};
  12
  13 void hkl_axis_config_randomize(HklAxisConfig *self)
  14 {
  15         double alea = (double)rand() / (RAND_MAX + 1.);
  16         self->value = self->range.min+(self->range.max-self->range.min)*alea;
  17         self->dirty = 1;
  18 }
  19
  20 void hkl_axis_config_init(HklAxisConfig *self, double min, double max,
  21                           double value, int dirty)
  22 {
  23         self->range.min = min;
  24         self->range.max = max;
  25         self->value = value;
  26         self->dirty = dirty;
  27 }
  28
  29 void hkl_axis_config_fprintf(FILE *f, HklAxisConfig *self)
  30 {
  31         fprintf(f, "% f [%f : %f] (%d)", self->value,
  32                 self->range.min, self->range.max, self->dirty);
  33 }
  34
  35 /***********/
  36 /* HklAxis */
  37 /***********/
  38
  39 void hkl_axis_init(HklAxis *self, char const *name, HklVector const *axis_v)
  40 {
  41         self->name = name;
  42         self->axis_v = *axis_v;
  43         self->config = hkl_axis_config_default;
  44 }
  45
  46 void hkl_axis_get_config(HklAxis *axis, HklAxisConfig *config)
  47 {
  48         *config = axis->config;
  49 }
  50
  51 void hkl_axis_set_config(HklAxis *axis, HklAxisConfig *config)
  52 {
  53         axis->config = *config;
  54         axis->config.dirty = HKL_TRUE;
  55 }
  56
  57 void hkl_axis_clear_dirty(HklAxis *axis)
  58 {
  59         axis->config.dirty = HKL_FALSE;
  60 }
  61
  62 void hkl_axis_get_quaternion(HklAxis const *axis, HklQuaternion *q)
  63 {
  64         hkl_quaternion_from_angle_and_axe(q, axis->config.value,
  65                                           &axis->axis_v);
  66 }