1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* detgeom.c
*
* Utility functions for detgeom structure
*
* Copyright © 2019-2021 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2020-2021 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
* CrystFEL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CrystFEL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <libcrystfel-config.h>
#include <math.h>
#include <stdlib.h>
#include "detgeom.h"
#include "utils.h"
/**
* \file detgeom.h
*/
void detgeom_transform_coords(struct detgeom_panel *p,
double fs, double ss,
double wavelength,
double dx, double dy,
double *r)
{
double xs, ys, zs;
double fac;
/* Calculate 3D position of given position, in pixels */
xs = p->cnx + fs*p->fsx + ss*p->ssx + dx*p->pixel_pitch;
ys = p->cny + fs*p->fsy + ss*p->ssy + dy*p->pixel_pitch;
zs = p->cnz + fs*p->fsz + ss*p->ssz;
fac = wavelength * sqrt(xs*xs + ys*ys + zs*zs);
r[0] = xs / fac;
r[1] = ys / fac;
r[2] = zs / fac - 1.0/wavelength;
}
void detgeom_free(struct detgeom *detgeom)
{
int i;
for ( i=0; i<detgeom->n_panels; i++ ) {
free(detgeom->panels[i].name);
}
free(detgeom->panels);
free(detgeom);
}
static double panel_max_res(struct detgeom_panel *p,
double wavelength)
{
double r[3];
double max_res = 0.0;
detgeom_transform_coords(p, 0, 0, wavelength, 0.0, 0.0, r);
max_res = biggest(max_res, modulus(r[0], r[1], r[2]));
detgeom_transform_coords(p, 0, p->h, wavelength, 0.0, 0.0, r);
max_res = biggest(max_res, modulus(r[0], r[1], r[2]));
detgeom_transform_coords(p, p->w, 0, wavelength, 0.0, 0.0, r);
max_res = biggest(max_res, modulus(r[0], r[1], r[2]));
detgeom_transform_coords(p, p->w, p->h, wavelength, 0.0, 0.0, r);
max_res = biggest(max_res, modulus(r[0], r[1], r[2]));
return max_res;
}
double detgeom_max_resolution(struct detgeom *detgeom,
double wavelength)
{
int i;
double max_res = 0.0;
for ( i=0; i<detgeom->n_panels; i++ ) {
double panel_maxres;
panel_maxres = panel_max_res(&detgeom->panels[i],
wavelength);
if ( panel_maxres > max_res ) {
max_res = panel_maxres;
}
}
return max_res;
}
void show_panel(struct detgeom_panel *p)
{
STATUS("Panel '%s':\n", p->name);
STATUS(" Size %i x %i px\n", p->w, p->h);
STATUS(" Transformation [cnx] + [%6.2f %6.2f] [fs] = [x]\n",
p->fsx, p->ssx);
STATUS(" [cny] + [%6.2f %6.2f] [ss] = [y]\n",
p->fsy, p->ssy);
STATUS(" [cnz] + [%6.2f %6.2f] = [z]\n",
p->fsz, p->ssz);
STATUS(" corner x,y,z = %f, %f, %f px\n",
p->cnx, p->cny, p->cnz);
STATUS(" = %f, %f, %f mm\n",
p->cnx*p->pixel_pitch*1e3,
p->cny*p->pixel_pitch*1e3,
p->cnz*p->pixel_pitch*1e3);
STATUS(" %f adu/photon, max %f adu\n",
p->adu_per_photon, p->max_adu);
}
static double clen(struct detgeom *dg, int i)
{
return dg->panels[i].cnz * dg->panels[i].pixel_pitch;
}
static double far_corner_clen(struct detgeom *dg, int i)
{
struct detgeom_panel *p = &dg->panels[i];
return (p->cnz + p->fsz*p->w + p->ssz*p->h) * p->pixel_pitch;
}
/* Return mean clen in m, or NAN in the following circumstances:
* 1. If the individual panel distances vary by more than 10% of the average
* 2. If the tilt of the panel creates a distance variation of more than 10%
* of the corner value over the extent of the panel */
double detgeom_mean_camera_length(struct detgeom *dg)
{
int i;
double mean;
double total = 0.0;
for ( i=0; i<dg->n_panels; i++ ) {
total += clen(dg, i);
}
mean = total / dg->n_panels;
for ( i=0; i<dg->n_panels; i++ ) {
if ( !within_tolerance(clen(dg, i), mean, 10.0) ) return NAN;
if ( !within_tolerance(clen(dg, i), far_corner_clen(dg, i), 10.0) ) return NAN;
}
return mean;
}
|
