From fa55ed58c66aa2bf27940a73eb59de901c1f6486 2017-11-08 08:27:55
From: Alexandre Leroux <aleroux@itlink.fr>
Date: 2017-11-08 08:27:55
Subject: [PATCH] Implements OptionalAxis::bounds() method

This method will be used to get min/max of th y-axis of a spectrogramm, to use it for setting the Y range of the colormap

---

diff --git a/core/include/Data/OptionalAxis.h b/core/include/Data/OptionalAxis.h
index 1d3b198..73e6ae2 100644
--- a/core/include/Data/OptionalAxis.h
+++ b/core/include/Data/OptionalAxis.h
@@ -41,6 +41,10 @@ public:
     /// @return gets the data at the index passed in parameter, NaN if the index is outside the
     /// bounds of the axis, or if the axis is undefined
     double at(int index) const;
+
+    ///@return the min and max values of the data on the axis, NaN values if there is no data
+    std::pair<double, double> bounds() const;
+
     /// @return the number of data on the axis, 0 if the axis is not defined
     int size() const;
     /// @return the unit of the axis, an empty unit if the axis is not defined
diff --git a/core/src/Data/OptionalAxis.cpp b/core/src/Data/OptionalAxis.cpp
index 8e25635..024fd4d 100644
--- a/core/src/Data/OptionalAxis.cpp
+++ b/core/src/Data/OptionalAxis.cpp
@@ -44,6 +44,31 @@ double OptionalAxis::at(int index) const
     }
 }
 
+std::pair<double, double> OptionalAxis::bounds() const
+{
+    if (!m_Defined || m_Data->size() == 0) {
+        return std::make_pair(std::numeric_limits<double>::quiet_NaN(),
+                              std::numeric_limits<double>::quiet_NaN());
+    }
+    else {
+
+        auto minIt = std::min_element(
+            m_Data->cbegin(), m_Data->cend(), [](const auto &it1, const auto &it2) {
+                return SortUtils::minCompareWithNaN(it1.first(), it2.first());
+            });
+
+        // Gets the iterator on the max of all values data
+        auto maxIt = std::max_element(
+            m_Data->cbegin(), m_Data->cend(), [](const auto &it1, const auto &it2) {
+                return SortUtils::maxCompareWithNaN(it1.first(), it2.first());
+            });
+
+        auto pair = std::make_pair(minIt->first(), maxIt->first());
+
+        return std::make_pair(minIt->first(), maxIt->first());
+    }
+}
+
 int OptionalAxis::size() const
 {
     return m_Defined ? m_Data->size() : 0;