1 files changed, 87 insertions, 0 deletions
diff --git a/noao/rv/rvidlines/idnewfeature.x b/noao/rv/rvidlines/idnewfeature.x
new file mode 100644
index 00000000..efa489b4
--- /dev/null
+++ b/noao/rv/rvidlines/idnewfeature.x
@@ -0,0 +1,87 @@
+include	<mach.h>
+include	"identify.h"
+
+# ID_NEWFEATURE -- Allocate and initialize memory for a new feature.
+
+procedure id_newfeature (id, pix, fit, user, wt, width, type, label)
+
+pointer	id			# ID pointer
+double	pix			# Pixel coordinate
+double	fit			# Fit coordinate
+double	user			# User coordinate
+double	wt			# Feature weight
+real	width			# Feature width
+int	type			# Feature type
+pointer	label			# Pointer to feature label
+
+int	i, current, strlen()
+double	delta
+
+define	NALLOC	20		# Length of additional allocations
+
+begin
+	if (IS_INDEFD (pix))
+	    return
+
+	delta = MAX_REAL
+	do i = 1, ID_NFEATURES(id) {
+	    if (abs (pix - PIX(id,i)) < delta) {
+		delta = abs (pix - PIX(id,i))
+		current = i
+	    }
+	}
+
+	if (delta >= ID_MINSEP(id)) {
+	    ID_NFEATURES(id) = ID_NFEATURES(id) + 1
+	    if (ID_NALLOC(id) < ID_NFEATURES(id)) {
+	        ID_NALLOC(id) = ID_NALLOC(id) + NALLOC
+	        call realloc (ID_PIX(id), ID_NALLOC(id), TY_DOUBLE)
+	        call realloc (ID_FIT(id), ID_NALLOC(id), TY_DOUBLE)
+	        call realloc (ID_USER(id), ID_NALLOC(id), TY_DOUBLE)
+	        call realloc (ID_WTS(id), ID_NALLOC(id), TY_DOUBLE)
+	        call realloc (ID_FWIDTHS(id), ID_NALLOC(id), TY_REAL)
+	        call realloc (ID_FTYPES(id), ID_NALLOC(id), TY_INT)
+	        call realloc (ID_LABEL(id), ID_NALLOC(id), TY_POINTER)
+		call aclri (Memi[ID_LABEL(id)+ID_NALLOC(id)-NALLOC], NALLOC)
+	    }
+	    for (current=ID_NFEATURES(id); (current>1)&&(pix<PIX(id,current-1));
+		    current=current-1) {
+	        PIX(id,current) = PIX(id,current-1)
+	        FIT(id,current) = FIT(id,current-1)
+	        USER(id,current) = USER(id,current-1)
+	        WTS(id,current) = WTS(id,current-1)
+	        FWIDTH(id,current) = FWIDTH(id,current-1)
+	        FTYPE(id,current) = FTYPE(id,current-1)
+		Memi[ID_LABEL(id)+current-1] = Memi[ID_LABEL(id)+current-2]
+	    }
+	    PIX(id,current) = pix
+	    FIT(id,current) = fit
+	    USER(id,current) = user
+	    WTS(id,current) = wt
+	    FWIDTH(id,current) = width
+	    FTYPE(id,current) = type
+	    if (label != NULL) {
+		i = strlen (Memc[label])
+		call malloc (Memi[ID_LABEL(id)+current-1], i, TY_CHAR)
+		call strcpy (Memc[label], Memc[Memi[ID_LABEL(id)+current-1]], i)
+	    } else
+		Memi[ID_LABEL(id)+current-1] = NULL
+	    ID_NEWFEATURES(id) = YES
+	} else if (abs (fit-user) < abs (FIT(id,current)-USER(id,current))) {
+	    PIX(id,current) = pix
+	    FIT(id,current) = fit
+	    USER(id,current) = user
+	    WTS(id,current) = wt
+	    FWIDTH(id,current) = width
+	    FTYPE(id,current) = type
+	    if (label != NULL) {
+		i = strlen (Memc[label])
+		call malloc (Memi[ID_LABEL(id)+current-1], i, TY_CHAR)
+		call strcpy (Memc[label], Memc[Memi[ID_LABEL(id)+current-1]], i)
+	    } else
+		Memi[ID_LABEL(id)+current-1] = NULL
+	    ID_NEWFEATURES(id) = YES
+	}
+
+	ID_CURRENT(id) = current
+end