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diff layer/Colour3DPlotLayer.cpp @ 1378:f08a3b8cdb9d

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Avoid nan/inf values (and consequent crash) in colour scale range
author Chris Cannam
date Tue, 06 Nov 2018 13:35:47 +0000
parents a1393b4384a5
children c8a6fd3f9dff 79032214f79d
line wrap: on
line diff
--- a/layer/Colour3DPlotLayer.cpp	Tue Nov 06 13:34:56 2018 +0000
+++ b/layer/Colour3DPlotLayer.cpp	Tue Nov 06 13:35:47 2018 +0000
@@ -1049,9 +1049,16 @@
                 << " (model min = " << m_model->getMinimumLevel()
                 << ", max = " << m_model->getMaximumLevel() << ")"
                 << endl;
-        
+
         if (maxValue <= minValue) {
             maxValue = minValue + 0.1f;
+
+            if (!(maxValue > minValue)) { // one of them must be NaN or Inf
+                SVCERR << "WARNING: Colour3DPlotLayer::getRenderer: resetting "
+                       << "minValue and maxValue to zero and one" << endl;
+                minValue = 0.f;
+                maxValue = 1.f;
+            }
         }
 
         cparams.threshold = minValue;