From 90e2b03662847fda9843d2ed73369653a3bcbea6 Mon Sep 17 00:00:00 2001
From: James Magahern <james@magahern.com>
Date: Sun, 27 Jan 2019 22:39:30 -0800
Subject: Some code cleanup

---
 src/animation.c | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

(limited to 'src/animation.c')

diff --git a/src/animation.c b/src/animation.c
index 15093d3..ecefb97 100644
--- a/src/animation.c
+++ b/src/animation.c
@@ -7,15 +7,6 @@
 #include "animation.h"
 #include <stdlib.h>
 
-anim_time_interval_t anim_now()
-{
-    struct timespec ts;
-    clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
-
-    long ms = (ts.tv_sec * 1000) + (ts.tv_nsec / 1000000);
-    return (ms / 1000.0);
-}
-
 /*
  * Easing functions
  */
@@ -31,4 +22,29 @@ double anim_quad_ease_out(double p)
     return -(p * (p - 2.0));
 }
 
+/*
+ * Convenience calculation functions
+ */
+
+anim_time_interval_t anim_now()
+{
+    struct timespec ts;
+    clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+
+    long ms = (ts.tv_sec * 1000) + (ts.tv_nsec / 1000000);
+    return (ms / 1000.0);
+}
+
+double anim_progress(animation_t *anim, const double duration)
+{
+    const anim_time_interval_t now = anim_now();
+    double progress = (now - anim->start_time) / duration;
+    return (anim->direction == IN) ? progress : (1.0 - progress);
+}
+
+bool anim_complete(animation_t *anim, const double progress)
+{
+   return (anim->direction == IN) ? progress >= 1.0 : progress <= 0.0;
+}
+
 
-- 
cgit v1.2.3-54-g00ecf