From 3f3fbe7e4b63c19a1a8f5baa3850a5c2c3e26e0f Mon Sep 17 00:00:00 2001
From: Lutz Helm <helm@ub.uni-leipzig.de>
Date: Thu, 21 Mar 2019 15:54:08 +0100
Subject: [PATCH] Remove IIIF source rounding workarounds

Always try to use canonical URI form. If the server serves wrong tile
heights for given w, shaped size request URI parameters, so be it.
---
 src/ol/source/IIIF.js | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/ol/source/IIIF.js b/src/ol/source/IIIF.js
index 05babdd608..d0f4754767 100644
--- a/src/ol/source/IIIF.js
+++ b/src/ol/source/IIIF.js
@@ -184,9 +184,6 @@ class IIIF extends TileImage {
         if (regionY + tileHeight * scale > height) {
           sizeH = Math.floor((height - regionY + scale - 1) / scale);
         }
-        const sizeHBySizeW = Math.round(sizeW / regionW * regionH),
-            sizeWBySizeH = Math.round(sizeH / regionH * regionW),
-            preferSizeByH = (sizeHBySizeW > sizeH) && (sizeW == sizeWBySizeH);
         if (regionX == 0 && regionW == width && regionY == 0 && regionH == height) {
           // canonical full image region parameter is 'full', not 'x,y,w,h'
           regionParam = 'full';
@@ -201,7 +198,7 @@ class IIIF extends TileImage {
         }
         if (version == Versions.VERSION3 && (!supportsArbitraryTiling || features.includes('sizeByWh'))) {
           sizeParam = sizeW + ',' + sizeH;
-        } else if (!supportsArbitraryTiling || features.includes('sizeByW') && (!preferSizeByH || !(features.includes('sizeByH')))) {
+        } else if (!supportsArbitraryTiling || features.includes('sizeByW')) {
           sizeParam = sizeW + ',';
         } else if (features.includes('sizeByH')) {
           sizeParam = ',' + sizeH;