1 files changed, 36 insertions, 0 deletions
diff --git a/pkg/proto/maskexpr/mesetexpr.x b/pkg/proto/maskexpr/mesetexpr.x
new file mode 100644
index 00000000..40c2495f
--- /dev/null
+++ b/pkg/proto/maskexpr/mesetexpr.x
@@ -0,0 +1,36 @@
+# ME_SETEXPR -- Set the pixel mask region to the appropriate number.
+
+procedure me_setexpr (expr, pmim, pregno, pregval, verbose)
+
+char	expr[ARB]		#I the region expression 
+pointer	pmim			#I the pixelmask image descriptor
+int	pregno			#I the current region number
+int	pregval			#I the current region value
+bool	verbose			#I print status messages ?
+
+pointer	sp, chregval
+int	nchars, stat
+int	itoc(), me_rgmask()
+
+begin
+	call smark (sp)
+	call salloc (chregval, SZ_FNAME, TY_CHAR)
+	nchars = itoc (pregval, Memc[chregval], SZ_FNAME)
+	if (nchars <= 0) {
+	    if (verbose) {
+		call printf ("    Region value %d cannot be encoded\n")
+		    call pargi (pregval)
+	    }
+	} else {
+	    stat = me_rgmask (expr, Memc[chregval], "p", pmim)
+	    if (stat == ERR) {
+		if (verbose) {
+		    call printf ("    Region %d cannot be decoded\n")
+		        call pargi (pregno)
+		}
+	    }
+	}
+
+	call sfree (sp)
+end
+