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-rw-r--r--src/geometry.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/geometry.c b/src/geometry.c
index 2329b0c7..56bb2b0a 100644
--- a/src/geometry.c
+++ b/src/geometry.c
@@ -236,9 +236,24 @@ RefList *find_intersections(struct image *image, UnitCell *cell)
int hmax, kmax, lmax;
double mres;
signed int h, k, l;
+ double a, b, c, al, be, ga;
reflections = reflist_new();
+ /* Cell angle check from Foadi and Evans (2011) */
+ cell_get_parameters(cell, &a, &b, &c, &al, &be, &ga);
+ if ( al + be + ga >= 2.0*M_PI ) return NULL;
+ if ( al + be - ga >= 2.0*M_PI ) return NULL;
+ if ( al - be + ga >= 2.0*M_PI ) return NULL;
+ if ( - al + be + ga >= 2.0*M_PI ) return NULL;
+ if ( al + be + ga <= 0.0 ) return NULL;
+ if ( al + be - ga <= 0.0 ) return NULL;
+ if ( al - be + ga <= 0.0 ) return NULL;
+ if ( - al + be + ga <= 0.0 ) return NULL;
+ if ( isnan(al) ) return NULL;
+ if ( isnan(be) ) return NULL;
+ if ( isnan(ga) ) return NULL;
+
cell_get_reciprocal(cell, &asx, &asy, &asz,
&bsx, &bsy, &bsz,
&csx, &csy, &csz);