From dec948dc805611eeb2ed0ad970864953ad19da22 Mon Sep 17 00:00:00 2001
From: Erik Reider <35975961+ErikReider@users.noreply.github.com>
Date: Fri, 26 Jan 2024 19:46:13 +0100
Subject: [PATCH] Moved easing functions into their own file

---
 include/sway/desktop/fx_renderer/animation_utils.h | 10 ++++++++++
 sway/desktop/fx_renderer/animation_utils.c         | 12 ++++++++++++
 sway/desktop/output.c                              | 10 +---------
 sway/meson.build                                   |  1 +
 4 files changed, 24 insertions(+), 9 deletions(-)
 create mode 100644 include/sway/desktop/fx_renderer/animation_utils.h
 create mode 100644 sway/desktop/fx_renderer/animation_utils.c

diff --git a/include/sway/desktop/fx_renderer/animation_utils.h b/include/sway/desktop/fx_renderer/animation_utils.h
new file mode 100644
index 00000000..63e3b487
--- /dev/null
+++ b/include/sway/desktop/fx_renderer/animation_utils.h
@@ -0,0 +1,10 @@
+#ifndef ANIMATION_UTILS_H
+#define ANIMATION_UTILS_H
+
+double lerp (double a, double b, double t);
+
+double ease_out_cubic (double t);
+
+// TODO: Add more easing functions in the future like ease_in and ease_in_out, etc...
+
+#endif
diff --git a/sway/desktop/fx_renderer/animation_utils.c b/sway/desktop/fx_renderer/animation_utils.c
new file mode 100644
index 00000000..9c64897a
--- /dev/null
+++ b/sway/desktop/fx_renderer/animation_utils.c
@@ -0,0 +1,12 @@
+#include <math.h>
+
+#include "sway/desktop/fx_renderer/animation_utils.h"
+
+double lerp (double a, double b, double t) {
+	return a * (1.0 - t) + b * t;
+}
+
+double ease_out_cubic (double t) {
+	double p = t - 1;
+	return pow(p, 3) + 1;
+}
diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index cae31412..481079d1 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -19,6 +19,7 @@
 #include "config.h"
 #include "log.h"
 #include "sway/config.h"
+#include "sway/desktop/fx_renderer/animation_utils.h"
 #include "sway/desktop/transaction.h"
 #include "sway/input/input-manager.h"
 #include "sway/input/seat.h"
@@ -1108,15 +1109,6 @@ void handle_output_power_manager_set_mode(struct wl_listener *listener,
 	apply_output_config(oc, output);
 }
 
-static double lerp (double a, double b, double t) {
-	return a * (1.0 - t) + b * t;
-}
-
-static double ease_out_cubic (double t) {
-	double p = t - 1;
-	return pow(p, 3) + 1;
-}
-
 struct workspace_scroll workspace_scroll_get_default() {
 	return (struct workspace_scroll) {
 		.percent = 0,
diff --git a/sway/meson.build b/sway/meson.build
index 8ccdb20d..481b1d0f 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -20,6 +20,7 @@ sway_sources = files(
 	'desktop/fx_renderer/fx_stencilbuffer.c',
 	'desktop/fx_renderer/fx_texture.c',
 	'desktop/fx_renderer/matrix.c',
+	'desktop/fx_renderer/animation_utils.c',
 	'desktop/idle_inhibit_v1.c',
 	'desktop/layer_shell.c',
 	'desktop/output.c',