pattern_sim: Get image size from detector geometry

src/detector.c

@@ -202,6 +202,7 @@ struct detector *get_detector_geometry(const char *filename)
 	char **bits;
 	int i;
 	int reject;
+	int x, y, max_x, max_y;
 
 	fh = fopen(filename, "r");
 	if ( fh == NULL ) return NULL;
@@ -339,7 +340,10 @@ struct detector *get_detector_geometry(const char *filename)
 	}
 
 	reject = 0;
+	max_x = 0;
+	max_y = 0;
 	for ( i=0; i<det->n_panels; i++ ) {
+
 		STATUS("Panel %i, min_x = %i\n", i, det->panels[i].min_x);
 		if ( det->panels[i].min_x == -1 ) {
 			ERROR("Please specify the minimum x coordinate for"
@@ -397,7 +401,25 @@ struct detector *get_detector_geometry(const char *filename)
 		}
 		/* It's not a problem if "no_index" is still zero */
 
+		if ( det->panels[i].max_x > max_x ) {
+			max_x = det->panels[i].max_x;
+		}
+		if ( det->panels[i].max_y > max_y ) {
+			max_y = det->panels[i].max_y;
+		}
+
+	}
+
+	for ( x=0; x<=max_x; x++ ) {
+	for ( y=0; y<=max_y; y++ ) {
+		if ( find_panel(det, x, y) == NULL ) {
+			ERROR("Detector geometry invalid: contains gaps.\n");
+			reject = 1;
+		}
+	}
 	}
+	det->max_x = max_x;
+	det->max_y = max_y;
 
 	if ( reject ) return NULL;
 

src/detector.h

@@ -38,6 +38,8 @@ struct detector
 {
 	struct panel *panels;
 	int           n_panels;
+	int           max_x;
+	int           max_y;  /* Size of overall array needed, minus 1 */
 };
 
 extern struct rvec get_q(struct image *image, unsigned int xs, unsigned int ys,

src/pattern_sim.c

@@ -338,9 +338,16 @@ int main(int argc, char *argv[])
 		delete_items(items);
 	}
 
+	image.det = get_detector_geometry(geometry);
+	if ( image.det == NULL ) {
+		ERROR("Failed to read detector geometry from '%s'\n", geometry);
+		return 1;
+	}
+	free(geometry);
+
 	/* Define image parameters */
-	image.width = 1024;
-	image.height = 1024;
+	image.width = image.det->max_x + 1;
+	image.height = image.det->max_y + 1;
 	image.lambda = ph_en_to_lambda(eV_to_J(PHOTON_ENERGY)); /* Wavelength */
 	cell = load_cell_from_pdb(filename);
 	if ( cell == NULL ) {
@@ -352,13 +359,6 @@ int main(int argc, char *argv[])
 	image.f0 = 1.0;
 	image.f0_available = 1;
 
-	image.det = get_detector_geometry(geometry);
-	if ( image.det == NULL ) {
-		ERROR("Failed to read detector geometry from '%s'\n", geometry);
-		return 1;
-	}
-	free(geometry);
-
 	powder = calloc(image.width*image.height, sizeof(*powder));
 
 	/* Splurge a few useful numbers */