Nearly perfect sync between transform and animation, but not sure how to replicate that reliably.

animate2.cpp

@@ -55,7 +55,7 @@ namespace animate2 {
       if($sequence.subframe > 0.9) $sequence.subframe = 0.0f;
       frame_change = true;
     } else {
-      $sequence.subframe = std::lerp($sequence.subframe, 1.0, $sequence.timer.alpha * $transform.ease_rate);
+      $sequence.subframe = std::lerp($sequence.subframe, 1.0, $sequence.timer.DELTA * $transform.ease_rate);
       fmt::println("subframe: {}, alpha: {}", $sequence.subframe, $sequence.timer.alpha);
     }
 
@@ -70,7 +70,6 @@ namespace animate2 {
   }
 
   void Animate2::update() {
-    // $sequence.subframe += $transform.speed;
     update_frame();
   }
 

animate2.hpp

@@ -52,7 +52,6 @@ namespace animate2 {
     bool simple{true};
     bool flipped{false};
     float ease_rate{0.5f};
-    float speed{0.1f};
     bool scaled{false};
     bool stationary{false};
     // these can handled by the onLoop, same as ganim8 does it

tests/animate2.cpp

@@ -39,7 +39,6 @@ Animate2 crafter() {
       .simple{false},
       .flipped{false},
       .ease_rate{0.5f},
-      .speed{0.02f},
       .scaled{true},
       .stationary{true},
       .toggled{false},

tools/animator.cpp

@@ -157,7 +157,7 @@ animate2::Sheet sheet{
 
 animate2::Sequence sequence{
   .frames{0,1,0,1},
-    .durations{166ms, 266ms, 166ms, 266ms}
+    .durations{500ms, 266ms, 100ms, 100ms}
 };
 
 animate2::Transform scale_tr{
@@ -167,13 +167,12 @@ animate2::Transform scale_tr{
     .max_y{0.8f},
     .simple{false},
     .flipped{false},
-    .ease_rate{0.5f},
-    .speed{0.02f},
+    .ease_rate{1.0f/0.2f},
     .scaled{true},
     .stationary{true},
     .toggled{false},
     .looped{true},
-    .easing = ease2::out_circle,
+    .easing = ease2::in_out_back,
     .motion = ease2::move_rush,
 };
 
@@ -185,7 +184,6 @@ animate2::Transform move_tr{
     .simple{false},
     .flipped{false},
     .ease_rate{2.5f},
-    .speed{0.02f},
     .scaled{true},
     .stationary{true},
     .toggled{false},