From e09c3d81260a0549549aaa3ec3696110490ebf00 Mon Sep 17 00:00:00 2001
From: "Silc Lizard (Tokage) Renew"
 <61938263+TokageItLab@users.noreply.github.com>
Date: Wed, 17 May 2023 07:03:45 +0900
Subject: [PATCH] Optimize Tween calculations by caching some divisions

---
 scene/animation/easing_equations.h | 33 ++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/scene/animation/easing_equations.h b/scene/animation/easing_equations.h
index a5af7dea543..1b9c378b4fe 100644
--- a/scene/animation/easing_equations.h
+++ b/scene/animation/easing_equations.h
@@ -78,7 +78,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace sine
 
@@ -104,7 +105,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace quint
 
@@ -130,7 +132,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace quart
 
@@ -157,7 +160,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace quad
 
@@ -197,7 +201,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace expo
 
@@ -264,7 +269,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace elastic
 
@@ -293,7 +299,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace cubic
 
@@ -322,7 +329,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace circ
 
@@ -356,14 +364,16 @@ static real_t in_out(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return in(t * 2, b, c / 2, d);
 	}
-	return out(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return out(t * 2 - d, b + h, h, d);
 }
 
 static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace bounce
 
@@ -398,7 +408,8 @@ static real_t out_in(real_t t, real_t b, real_t c, real_t d) {
 	if (t < d / 2) {
 		return out(t * 2, b, c / 2, d);
 	}
-	return in(t * 2 - d, b + c / 2, c / 2, d);
+	real_t h = c / 2;
+	return in(t * 2 - d, b + h, h, d);
 }
 }; // namespace back