degree calculator

misc/tools.py

@@ -1,7 +1,26 @@
-
 from decimal import Decimal
 
-def deg(deg, mm, ss):
-    return (Decimal(deg) +
-        Decimal(mm) / Decimal(60) +
-        Decimal(ss) / Decimal(3600)).normalize()
+class Deg:
+    def __str__(self):
+        return "%03d - %02d - %02d" % (self.deg, self.mm, self.ss)
+
+    def __init__(self, deg, mm, ss):
+        self.deg = Decimal(deg)
+        self.mm = Decimal(mm)
+        self.ss = Decimal(ss)
+
+    @staticmethod
+    def from_1(deg):
+        assert isinstance(deg, Decimal)
+
+        pdeg, pmm = divmod(deg, 1)
+        pmm = pmm * Decimal(60)
+        pmm, pss = divmod(pmm, 1)
+        pss = pss * Decimal(60)
+        return Deg(pdeg, pmm, pss)
+
+    def frac(self):
+        return (
+            self.deg +
+            self.mm / Decimal(60) +
+            self.ss / Decimal(3600)).normalize()