From 159a1d5612b803ca1d8b1f5d7498d5e84a58c284 Mon Sep 17 00:00:00 2001
From: Martynas Bagdonas <git.martynas@gmail.com>
Date: Sun, 1 Oct 2023 22:09:06 +0100
Subject: [PATCH] Round char rotation to the closest standard angle

---
 src/core/evaluator.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index 7154c4c820da6..88115370e67ab 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -2874,6 +2874,22 @@ class PartialEvaluator {
         }
         textChunk.str.push(glyphUnicode);
 
+        function closestStandardAngle(degrees) {
+          const standardAngles = [0, 90, 180, 270];
+          let closestAngle = standardAngles[0];
+          let minDifference = Math.abs(degrees - closestAngle);
+
+          for (let i = 1; i < standardAngles.length; i++) {
+            const difference = Math.abs(degrees - standardAngles[i]);
+            if (difference < minDifference) {
+              minDifference = difference;
+              closestAngle = standardAngles[i];
+            }
+          }
+
+          return closestAngle;
+        }
+
         function matrixToDegrees(matrix) {
           let radians = Math.atan2(matrix[1], matrix[0]);
           if (radians < 0) {
@@ -2884,6 +2900,7 @@ class PartialEvaluator {
           if (degrees < 0) {
             degrees += 360;
           }
+          degrees = closestStandardAngle(degrees);
           return degrees;
         }