1 files changed, 42 insertions, 0 deletions
diff --git a/sys/mwcs/mwgaxlist.x b/sys/mwcs/mwgaxlist.x
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+++ b/sys/mwcs/mwgaxlist.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"mwcs.h"
+
+# MW_GAXLIST -- Get the physical axis list.  The bitflags in AXBITS define the
+# axes in the logical system; run these through the axis map (if enabled) to
+# get the list of physical axes for which the transformation is to be prepared.
+
+procedure mw_gaxlist (mw, axbits, axis, naxes)
+
+pointer	mw			#I pointer to MWCS descriptor
+int	axbits			#I bitflag marking the desired axes
+int	axis[MAX_DIM]		#O output axis array
+int	naxes			#O number of axes in axis array
+
+int	bits, ax, i
+int	bitupk()
+
+begin
+	bits = axbits
+	if (bits == 0)
+	    bits = 177B		# default to all axes
+
+	naxes = 0
+	do i = 1, MAX_DIM
+	    if (bitupk (bits, i, 1) != 0) {
+		if (MI_USEAXMAP(mw) == YES) {
+		    if (i > MI_NLOGDIM(mw))
+			break
+		    # Map logical axis to physical axis.
+		    ax = MI_PHYSAX(mw,i)
+		} else {
+		    if (i > MI_NDIM(mw))
+			break
+		    ax = i
+		}
+
+		# Add physical axis to axis list.
+		naxes = naxes + 1
+		axis[naxes] = ax
+	    }
+end