From bb54f97810284770f827af6d3d6f9417d8d318ca Mon Sep 17 00:00:00 2001
From: Vasile Vilvoiu <vasi@vilvoiu.ro>
Date: Thu, 22 Jul 2021 21:11:43 +0300
Subject: Handle very small axes, when no nice value is found.

Fixes #23.
---
 src/renderer.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/renderer.cpp')

diff --git a/src/renderer.cpp b/src/renderer.cpp
index 4337bbf..5285c63 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -381,8 +381,12 @@ Renderer::GetNiceTicks(double v_min, double v_max, const std::string& v_unit, un
             fval = std::floor(fval) + 1.0f;
         }
         fval *= factor;
-        assert(v_min <= fval);
-        assert(fval <= v_max);
+
+        if ((fval < v_min) || (fval > v_max)) {
+            /* there is no nice value here; usually this happens because the
+             * axis length is too small */
+            return v_min;
+        }
 
         return fval;
     };
-- 
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