From 49426f19cd8eaed7cf6c47999b66fee7ee637a56 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Fri, 27 Feb 2026 16:33:57 +0100
Subject: feat: implement keyframe animation system

Add keyframe support for transform, opacity, and volume properties.
Includes animation engine (interpolation, mutations, resolvers), timeline
markers with selection/snapping, properties panel toggles, keyframe-aware
renderer, and full undo/redo command support.

Also refactor element command constructors to object params, extract
timeline pixel math to pixel-utils.ts, and update cursor rules.
---
 apps/web/src/utils/math.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'apps/web/src/utils')

diff --git a/apps/web/src/utils/math.ts b/apps/web/src/utils/math.ts
index ac82ca17..d45e71c0 100644
--- a/apps/web/src/utils/math.ts
+++ b/apps/web/src/utils/math.ts
@@ -10,6 +10,18 @@ export function clamp({
 	return Math.max(min, Math.min(max, value));
 }
 
+export function isNearlyEqual({
+	leftValue,
+	rightValue,
+	epsilon = 0.0001,
+}: {
+	leftValue: number;
+	rightValue: number;
+	epsilon?: number;
+}): boolean {
+	return Math.abs(leftValue - rightValue) <= epsilon;
+}
+
 export function evaluateMathExpression({
 	input,
 }: {
-- 
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