initial commit

source/Utils.mc

@@ -0,0 +1,47 @@
+import Toybox.Lang;
+import Toybox.Graphics;
+
+// generic function for arrays
+function find(source as Array, searchFunction as Method(left, right) as Boolean) {
+    if (source == null || source.size() == 0) {
+        return null;
+    }
+
+    var result = source[0];
+    for (var i = 0; i < source.size(); ++i) {
+        if (searchFunction.invoke(result, source[i])) {
+            result = source[i];
+        }
+    }
+
+    return result;
+}
+
+// no types here, because this is generic, which are not supported by language
+function getOrElse(value, defaultValue) {
+    if (value == null) {
+        return defaultValue;
+    } else {
+        return value;
+    }
+}
+
+function _max(left as Numeric, right as Numeric) as Boolean {
+    return left < right;
+}
+
+function max(source as Array<Numeric>) as Numeric? {
+    return find(source, new Method($, :_max));
+}
+
+function _min(left as Numeric, right as Numeric) as Boolean {
+    return left > right;
+}
+
+function min(source as Array<Numeric>) as Numeric? {
+    return find(source, new Method($, :_min));
+}
+
+function getCenter(dc as Dc, shift as Point2D) as Point2D {
+    return [dc.getWidth() / 2.0 + shift[0], dc.getHeight() / 2.0 + shift[1]];
+}