Upgraded visualization libraries

Major refactoring of color legend framework
Added discrete log color legend
p4#: 18989

VisualizationModules/LibRender/cvfRenderStateFrontFace.cpp

@@ -0,0 +1,89 @@
+//##################################################################################################
+//
+//   Custom Visualization Core library
+//   Copyright (C) 2011-2012 Ceetron AS
+//    
+//   This library is free software: you can redistribute it and/or modify 
+//   it under the terms of the GNU General Public License as published by 
+//   the Free Software Foundation, either version 3 of the License, or 
+//   (at your option) any later version. 
+//    
+//   This library is distributed in the hope that it will be useful, but WITHOUT ANY 
+//   WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//   FITNESS FOR A PARTICULAR PURPOSE.   
+//    
+//   See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>> 
+//   for more details. 
+//
+//##################################################################################################
+
+#include "cvfBase.h"
+#include "cvfRenderStateFrontFace.h"
+#include "cvfAssert.h"
+#include "cvfOpenGL.h"
+
+namespace cvf {
+
+
+
+//==================================================================================================
+///
+/// \class cvf::RenderStateFrontFace
+/// \ingroup Render
+///
+/// Encapsulate OpenGL glFrontFace() used to specify polygon winding. Used together with RenderStateCullFace
+/// render state and the gl_FrontFacing bultin shader input variable.
+///
+/// \sa http://www.opengl.org/sdk/docs/man/xhtml/glFrontFace.xml
+/// \sa http://www.opengl.org/sdk/docs/manglsl/xhtml/gl_FrontFacing.xml
+//==================================================================================================
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RenderStateFrontFace::RenderStateFrontFace(Mode faceMode)
+:   RenderState(FRONT_FACE),
+    m_faceMode(faceMode)
+{
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStateFrontFace::setMode(Mode faceMode)
+{
+    m_faceMode = faceMode;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RenderStateFrontFace::Mode RenderStateFrontFace::mode() const
+{
+    return m_faceMode;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStateFrontFace::applyOpenGL(OpenGLContext* oglContext) const
+{
+    if (m_faceMode == CW)    
+    {
+        glFrontFace(GL_CW);
+    }
+    else 
+    {
+        glFrontFace(GL_CCW);
+    }
+
+    CVF_CHECK_OGL(oglContext);
+}
+
+
+
+} // namespace cvf
+