Transformation matrix shouldn't be integer

2 files changed, 7 insertions, 7 deletions

diff --git a/src/detector.c b/src/detector.c
index e53d5331..b9d91118 100644
--- a/src/detector.c
+++ b/src/detector.c
@@ -32,7 +32,7 @@ static int atob(const char *a)
 }
 
 
-static int dir_conv(const char *a, signed int *sx, signed int *sy)
+static int dir_conv(const char *a, double *sx, double *sy)
 {
 	if ( strcmp(a, "-x") == 0 ) {
 		*sx = -1;  *sy = 0;
@@ -79,8 +79,8 @@ struct rvec get_q(struct image *image, double fs, double ss,
 
 	/* Convert xs and ys, which are in fast scan/slow scan coordinates,
 	 * to x and y */
-	xs = (fs-p->min_fs)*p->fsx + (ss-p->min_ss)*p->ssx;
-	ys = (fs-p->min_fs)*p->fsy + (ss-p->min_ss)*p->ssy;
+	xs = (fs-(double)p->min_fs)*p->fsx + (ss-(double)p->min_ss)*p->ssx;
+	ys = (fs-(double)p->min_fs)*p->fsy + (ss-(double)p->min_ss)*p->ssy;
 
 	rx = (xs + p->cnx) / p->res;
 	ry = (ys + p->cny) / p->res;
diff --git a/src/detector.h b/src/detector.h
index 028bd589..c4e06cef 100644
--- a/src/detector.h
+++ b/src/detector.h
@@ -38,10 +38,10 @@ struct panel
 	int      no_index; /* Don't index peaks in this panel if non-zero */
 	double   peak_sep; /* Characteristic peak separation */
 
-	signed int fsx;
-	signed int fsy;
-	signed int ssx;
-	signed int ssy;
+	double fsx;
+	double fsy;
+	double ssx;
+	double ssy;
 
 	double xfs;
 	double yfs;