From 60f86b8ea0c2bfe1c7015bd68ae84cd29388798c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Wed, 30 Jan 2013 14:36:45 +0100
Subject: [PATCH] Math: added Vector::{min,max}Abs().

---
 src/Math/Test/VectorTest.cpp | 16 ++++++++++++++++
 src/Math/Vector.h            | 20 ++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/src/Math/Test/VectorTest.cpp b/src/Math/Test/VectorTest.cpp
index adaa4f166..ba53288cc 100644
--- a/src/Math/Test/VectorTest.cpp
+++ b/src/Math/Test/VectorTest.cpp
@@ -48,7 +48,9 @@ class VectorTest: public Corrade::TestSuite::Tester {
         void sum();
         void product();
         void min();
+        void minAbs();
         void max();
+        void maxAbs();
 
         void projected();
         void angle();
@@ -85,7 +87,9 @@ VectorTest::VectorTest() {
              &VectorTest::sum,
              &VectorTest::product,
              &VectorTest::min,
+             &VectorTest::minAbs,
              &VectorTest::max,
+             &VectorTest::maxAbs,
 
              &VectorTest::projected,
              &VectorTest::angle,
@@ -217,11 +221,23 @@ void VectorTest::min() {
     CORRADE_COMPARE(Vector3(1.0f, -2.0f, 3.0f).min(), -2.0f);
 }
 
+void VectorTest::minAbs() {
+    /* Check that initial value is absolute and also all others */
+    CORRADE_COMPARE(Vector3(-2.0f, 1.0f, 3.0f).minAbs(), 1.0f);
+    CORRADE_COMPARE(Vector3(1.0f, -2.0f, 3.0f).minAbs(), 1.0f);
+}
+
 void VectorTest::max() {
     /* Check also that initial value isn't initialized to 0 */
     CORRADE_COMPARE(Vector3(-1.0f, -2.0f, -3.0f).max(), -1.0f);
 }
 
+void VectorTest::maxAbs() {
+    /* Check that initial value is absolute and also all others */
+    CORRADE_COMPARE(Vector3(-5.0f, 1.0f, 3.0f).maxAbs(), 5.0f);
+    CORRADE_COMPARE(Vector3(1.0f, -5.0f, 3.0f).maxAbs(), 5.0f);
+}
+
 void VectorTest::projected() {
     Vector3 line(1.0f, -1.0f, 0.5f);
     Vector3 projected = Vector3(1.0f, 2.0f, 3.0f).projected(line);
diff --git a/src/Math/Vector.h b/src/Math/Vector.h
index 58d9e6d1d..f05b2ff6f 100644
--- a/src/Math/Vector.h
+++ b/src/Math/Vector.h
@@ -483,6 +483,16 @@ template<std::size_t size, class T> class Vector {
             return out;
         }
 
+        /** @brief Minimal absolute value in the vector */
+        T minAbs() const {
+            T out(std::abs(_data[0]));
+
+            for(std::size_t i = 1; i != size; ++i)
+                out = std::min(out, std::abs(_data[i]));
+
+            return out;
+        }
+
         /** @brief Maximal value in the vector */
         T max() const {
             T out(_data[0]);
@@ -493,6 +503,16 @@ template<std::size_t size, class T> class Vector {
             return out;
         }
 
+        /** @brief Maximal absolute value in the vector */
+        T maxAbs() const {
+            T out(std::abs(_data[0]));
+
+            for(std::size_t i = 1; i != size; ++i)
+                out = std::max(out, std::abs(_data[i]));
+
+            return out;
+        }
+
     private:
         /* Implementation for Vector<size, T>::Vector(const Vector<size, U>&) */
         template<class U, std::size_t ...sequence> inline constexpr explicit Vector(Implementation::Sequence<sequence...>, const Vector<sizeof...(sequence), U>& vector): _data{T(vector.data()[sequence])...} {}