classic-lite

commit 596bdb297d526c4d4534d9c948f88e20dd35cd68
parent 31dfee29fefc36a2c19f888cd476f37ad38d868f
Author: Natasha Kerensikova <natacha@instinctive.eu>
Date:   Sun, 13 Dec 2015 18:32:12 +0000

Use lines rather than arcs for minute marks in round display

For a few pixels it doesn't make much of a visual difference, while
being more than 30 times faster do draw.
Diffstat:
M
src/classic-lite.c
 | 
19
+++++++++++++++++--

1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/src/classic-lite.c b/src/classic-lite.c
@@ -349,6 +349,20 @@ background_layer_draw(Layer *layer, GContext *ctx) {
 	}
 }
 #else
+static GPoint
+point_at_angle(GRect bounds, int32_t angle) {
+	GPoint ret;
+	uint32_t width = bounds.size.w;
+	uint32_t height = bounds.size.h;
+	ret.x = bounds.origin.x
+	    + (TRIG_MAX_RATIO * (width + 1) + width * sin_lookup(angle))
+	    / (2 * TRIG_MAX_RATIO);
+	ret.y = bounds.origin.y
+	    + (TRIG_MAX_RATIO * (height + 1) - height * cos_lookup(angle))
+	    / (2 * TRIG_MAX_RATIO);
+	return ret;
+}
+
 static void
 background_layer_draw(Layer *layer, GContext *ctx) {
 	const GRect bounds = layer_get_bounds(layer);
@@ -367,8 +381,9 @@ background_layer_draw(Layer *layer, GContext *ctx) {
 		INSET_RECT(rect, bounds, 5);
 		for (i = 0; i < 60; i += 1) {
 			angle = TRIG_MAX_ANGLE * i / 60;
-			graphics_draw_arc(ctx, rect, GOvalScaleModeFillCircle,
-			    angle - angle_delta, angle + angle_delta);
+			graphics_draw_line(ctx,
+			    point_at_angle(rect, angle - angle_delta),
+			    point_at_angle(rect, angle + angle_delta));
 		}
 	}