1 files changed, 19 insertions, 0 deletions
diff --git a/src/cmd/map/libmap/azequidist.c b/src/cmd/map/libmap/azequidist.c
new file mode 100644
index 00000000..d26d33d4
--- /dev/null
+++ b/src/cmd/map/libmap/azequidist.c
@@ -0,0 +1,19 @@
+#include <u.h>
+#include <libc.h>
+#include "map.h"
+
+int
+Xazequidistant(struct place *place, double *x, double *y)
+{
+	double colat;
+	colat = PI/2 - place->nlat.l;
+	*x = -colat * place->wlon.s;
+	*y = -colat * place->wlon.c;
+	return(1);
+}
+
+proj
+azequidistant(void)
+{
+	return(Xazequidistant);
+}