2 files changed, 14 insertions, 0 deletions
diff --git a/libcrystfel/src/detgeom.c b/libcrystfel/src/detgeom.c
index 988d3f28..a8f8b079 100644
--- a/libcrystfel/src/detgeom.c
+++ b/libcrystfel/src/detgeom.c
@@ -213,3 +213,15 @@ void detgeom_show_hierarchy(const struct detgeom *dg)
 {
 	detgeom_show_group(dg->top_group, 0);
 }
+
+
+void detgeom_translate_detector_m(struct detgeom *dg, double x, double y, double z)
+{
+	int i;
+	for ( i=0; i<dg->n_panels; i++ ) {
+		struct detgeom_panel *p = &dg->panels[i];
+		p->cnx += x / p->pixel_pitch;
+		p->cny += y / p->pixel_pitch;
+		p->cnz += z / p->pixel_pitch;
+	}
+}
diff --git a/libcrystfel/src/detgeom.h b/libcrystfel/src/detgeom.h
index 22f5bd1a..cf4968f8 100644
--- a/libcrystfel/src/detgeom.h
+++ b/libcrystfel/src/detgeom.h
@@ -140,6 +140,8 @@ extern struct detgeom_panel *detgeom_find_panel(struct detgeom *dg, const char *
 
 extern void detgeom_show_hierarchy(const struct detgeom *dg);
 
+extern void detgeom_translate_detector_m(struct detgeom *dg, double x, double y, double z);
+
 #ifdef __cplusplus
 }
 #endif