From 5d1c12ffe2ff1392768d52b99e58c9df40321eac Mon Sep 17 00:00:00 2001
From: mars <mars@tebibyte.media>
Date: Sat, 9 Jul 2022 18:23:13 -0600
Subject: [PATCH] Add animation delay

---
 src/anim.rs | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/anim.rs b/src/anim.rs
index 81b2006..8ebf755 100644
--- a/src/anim.rs
+++ b/src/anim.rs
@@ -4,6 +4,7 @@ use keyframe::EasingFunction;
 pub struct Animation<F> {
     time: f32,
     duration: f32,
+    delay: f32,
     from: f32,
     to: f32,
     function: F,
@@ -17,6 +18,7 @@ impl<F: EasingFunction> Animation<F> {
             duration,
             from,
             to,
+            delay: 0.0,
             function,
             direction: false,
         }
@@ -32,10 +34,18 @@ impl<F: EasingFunction> Animation<F> {
 
     pub fn get(&self) -> f32 {
         if self.is_active() {
-            let x = self.time / self.duration;
-            let x = if self.direction { x } else { 1.0 - x };
-            let lerp = self.function.y(x as f64) as f32;
-            (1.0 - lerp) * self.from + lerp * self.to
+            if self.time <= 0.0 {
+                if self.direction {
+                    self.from
+                } else {
+                    self.to
+                }
+            } else {
+                let x = self.time / self.duration;
+                let x = if self.direction { x } else { 1.0 - x };
+                let lerp = self.function.y(x as f64) as f32;
+                (1.0 - lerp) * self.from + lerp * self.to
+            }
         } else if self.direction {
             self.to
         } else {
@@ -66,9 +76,13 @@ impl<F: EasingFunction> Animation<F> {
         if self.is_active() {
             self.time = self.duration - self.time;
         } else {
-            self.time = 0.0;
+            self.time = -self.delay;
         }
 
         self.direction = !self.direction;
     }
+
+    pub fn set_delay(&mut self, delay: f32) {
+        self.delay = delay;
+    }
 }