From 9de980008707eb4d5fa185fa568bf60734f9fa85 Mon Sep 17 00:00:00 2001
From: Sylvie Lamy-Thepaut <sylvie.lamy-thepaut@ecmwf.int>
Date: Mon, 5 Jun 2023 18:03:43 +0100
Subject: [PATCH] Magics : contour_shade_max/min_level wher used evne idf
 contour_shade was off . [SD-79687]

---
 src/visualisers/IsoPlot.cc   | 2 +-
 src/visualisers/IsoShading.h | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/visualisers/IsoPlot.cc b/src/visualisers/IsoPlot.cc
index bca07225..016f728d 100644
--- a/src/visualisers/IsoPlot.cc
+++ b/src/visualisers/IsoPlot.cc
@@ -1342,7 +1342,7 @@ bool IsoPlot::prepare(MatrixHandler& data) {
     double min = data.min();
     double max = data.max();
     (*levelSelection_).clear();
-    (*levelSelection_).calculate(min, max, true);
+    (*levelSelection_).calculate(min, max, shading_->isShading());
     bool need_isolines = (*shading_)(*levelSelection_);
     shading_->reset();
     (*label_).prepare(*levelSelection_, (*colour_).name());
diff --git a/src/visualisers/IsoShading.h b/src/visualisers/IsoShading.h
index 64931e41..641c2afd 100644
--- a/src/visualisers/IsoShading.h
+++ b/src/visualisers/IsoShading.h
@@ -76,6 +76,7 @@ class NoIsoShading {
     virtual bool needClipping() { return false; }
     virtual bool method(ContourMethod*) { return false; }
     virtual void reset() {}
+    virtual bool isShading() { return false; }
 
 protected:
     //! Method to print string about this class on to a stream of type ostream (virtual).
@@ -109,6 +110,8 @@ class IsoShading : public NoIsoShading, public IsoShadingAttributes {
         object->copy(*this);
         return object;
     }
+    
+    bool isShading() override { return true; }
 
     CellArray* array(MatrixHandler& matrix, IntervalMap<int>& range, const Transformation& transformation, int width,
                      int height, float resolution, const string& technique) override {