initial commit

source/Hands/IHands.mc

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+ import Toybox.Graphics;
+ import Toybox.Lang;
+ import Toybox.System;
+ import Toybox.WatchUi;
+ 
+ class IHands extends Drawable {
+
+    var BackgroundColor as ColorType;
+    var CenterShift as [Float, Float];
+    var Color as ColorType;
+    var Radius as Float;
+    var Type as HandType;
+
+    typedef HandsParams as {
+        :Identifier as Object,
+        :Color as ColorType,
+        :Type as HandType,
+        :Field as FieldParams,
+    };
+
+    enum HandType {
+        OTHER_HAND = 0,
+        HOURS_HAND = 1,
+        MINUTES_HAND = 2,
+        SECONDS_HAND = 3,
+    }
+
+    enum HandStyleType {
+        EMPTY_HANDS = 0,
+        SIMPLE_HANDS = 1,
+    }
+
+    static function getHands(style as HandStyleType, options as HandsParams) as IHands? {
+        switch (style) {
+            case SIMPLE_HANDS:
+                return new SimpleHands(options);
+            case EMPTY_HANDS:
+            default:
+                return null;
+        }
+    }
+
+    function initialize(options as HandsParams) {
+        Drawable.initialize({:identifier => options[:Identifier]});
+
+        // scene
+        var field = getOrElse(options[:Field], {}) as FieldParams;
+        CenterShift = getOrElse(field[:CenterShift], [0.0, 0.0]);
+        Radius = 0.95 * getOrElse(field[:Radius], 1.0);
+
+        // properties
+        BackgroundColor = options[:BackgroundColor];
+        Color = options[:Color];
+        Type = options[:Type];
+    }
+
+    function draw(dc as Dc) as Void {
+        var center = getCenter(dc, CenterShift);
+        var length = Radius * min(center[0], center[1]);
+        drawHand(dc, center[0], center[1], length);
+    }
+
+    function drawHand(dc as Dc, x as Float, y as Float, length as Float) as Void {}
+
+    function getAngle(angle as Float?) as Float? {
+        var now = System.getClockTime();
+        switch (Type) {
+            case HOURS_HAND:
+                return (now.hour % 12 + now.min / 60.0) * 30.0;
+            case MINUTES_HAND:
+                return now.min * 6.0;
+            case SECONDS_HAND:
+                return now.sec * 6.0;
+            case OTHER_HAND:
+            default:
+                return angle;
+        }
+    }
+ }

source/Hands/SimpleHands.mc

@@ -0,0 +1,26 @@
+import Toybox.Graphics;
+import Toybox.Lang;
+
+class SimpleHands extends IHands {
+
+    function initialize(options as IHands.HandsParams) {
+        IHands.initialize(options);
+    }
+
+    function drawHand(dc as Dc, x as Float, y as Float, length as Float) as Void {
+        var angle = Math.toRadians(getAngle(null) - 90);
+        length *= getLenght(Type);
+
+        dc.setColor(Color, Color);
+        dc.drawLine(x, y, x + length * Math.cos(angle), y + length * Math.sin(angle));
+    }
+
+    private function getLenght(handType as IHands.HandType) as Float {
+        switch (handType) {
+            case HOURS_HAND:
+                return 0.7;
+            default:
+                return 1.0;
+        }
+    }
+}