Fem: in case the range collapses to a single value expand it to a valid range with +/- eps

2022-03-28 20:16:22 +02:00
parent a7ef1d7aa8
commit 5974abe351
1 changed files with 4 additions and 0 deletions
--- a/src/Mod/Fem/Gui/ViewProviderFemPostObject.cpp
+++ b/src/Mod/Fem/Gui/ViewProviderFemPostObject.cpp
@@ -477,6 +477,10 @@ void ViewProviderFemPostObject::WritePointData(vtkPoints* points, vtkDataArray*
 void ViewProviderFemPostObject::setRangeOfColorBar(double min, double max)
 {
    try {
+        if (min >= max) {
+            min = max - 10 * std::numeric_limits<float>::epsilon();
+            max = max + 10 * std::numeric_limits<float>::epsilon();
+        }
        m_colorBar->setRange(min, max);
    }
    catch (const Base::ValueError& e) {