From 2cf1e62d283a7f6ce1bad9b0c8a0fbb664a294fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Helmut=20Hoffer=20von=20Ankershoffen=20n=C3=A9=20Oertel?=
 <helmuthva@googlemail.com>
Date: Tue, 12 Nov 2024 22:42:47 +0100
Subject: [PATCH] perf(bulkAnnotations): cache affine (#159)

* perf(bulkAnnotations): cache affine

* fix: typo

---------

Co-authored-by: Helmut (Oertel) Hoffer von Ankershoffen <helmuthva@gmail.com>
---
 src/bulkAnnotations/utils.js | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/bulkAnnotations/utils.js b/src/bulkAnnotations/utils.js
index 41824e4..38d5030 100644
--- a/src/bulkAnnotations/utils.js
+++ b/src/bulkAnnotations/utils.js
@@ -468,6 +468,12 @@ export const getFeaturesFromBulkAnnotations = ({
 
   const { topLeft, bottomRight } = getViewportBoundingBox({ view, pyramid, affine })
 
+  const cachedAffine = getAffineBasedOnPyramidLevel({
+    affine,
+    pyramid,
+    annotationGroup
+  })
+
   const features = []
 
   for (
@@ -492,11 +498,7 @@ export const getFeaturesFromBulkAnnotations = ({
       if (annotationCoordinateType === '2D') {
         firstCoordinate = mapPixelCoordToSlideCoord({
           point: [firstCoordinate[0], firstCoordinate[1]],
-          affine: getAffineBasedOnPyramidLevel({
-            affine,
-            pyramid,
-            annotationGroup
-          })
+          affine: cachedAffine
         })
       }