From 8e710784df379cb2b1a12f64182b28ba71613079 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sun, 27 Mar 2022 09:04:05 +0200
Subject: [PATCH] fixed scale_at for cylindrical projections

---
 drawing.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drawing.cpp b/drawing.cpp
index 1325296c..acc848e7 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -789,6 +789,15 @@ EX ld scale_at(const shiftmatrix& T) {
   applymodel(tC0(T), h1);
   applymodel(T * xpush0(.01), h2);
   applymodel(T * ypush(.01) * C0, h3);
+  if(mdBandAny()) {
+    ld x2 = 2;
+    if(pmodel == mdBandEquiarea) x2 /= 2;
+    ld x4 = 2 * x2;
+    if(h2[0] > h1[0] + x2) h2[0] -= x4;
+    if(h2[0] < h1[0] - x2) h2[0] += x4;
+    if(h3[0] > h1[0] + x2) h3[0] -= x4;
+    if(h3[0] < h1[0] - x2) h3[0] += x4;
+    }
   return sqrt(hypot_d(2, h2-h1) * hypot_d(2, h3-h1) / .0001);
   }