refs #304, centralized icons

* icons which can be rotated
* provide metadata
* integrated in CValueObjects
* added SVG support

src/blackmisc/pqangle.cpp

@@ -0,0 +1,34 @@
+/* Copyright (C) 2013
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of Swift Project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "iconlist.h"
+#include "pqangle.h"
+
+namespace BlackMisc
+{
+    namespace PhysicalQuantities
+    {
+        BlackMisc::CIcon CAngle::toIcon() const
+        {
+            BlackMisc::CIcon i = CIconList::iconForIndex(CIcons::StandardIconArrowMediumNorth16);
+            i.setRotation(*this);
+            return i;
+        }
+
+        double CAngle::piFactor() const
+        {
+            return BlackMisc::Math::CMath::round(this->value(CAngleUnit::rad()) / BlackMisc::Math::CMath::PI() , 6);
+        }
+
+        const double &CAngle::PI()
+        {
+            return BlackMisc::Math::CMath::PI();
+        }
+    }
+}