Upgraded visualization libraries

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

VisualizationModules/LibRender/cvfRenderStatePoint.cpp

@@ -0,0 +1,165 @@
+//##################################################################################################
+//
+//   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 "cvfRenderStatePoint.h"
+#include "cvfAssert.h"
+#include "cvfOpenGL.h"
+#include "cvfOpenGLCapabilities.h"
+
+namespace cvf {
+
+
+
+
+//==================================================================================================
+///
+/// \class cvf::RenderStatePoint
+/// \ingroup Render
+///
+/// 
+///
+//==================================================================================================
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RenderStatePoint::RenderStatePoint(Mode sizeMode)
+:   RenderState(POINT),
+    m_sizeMode(sizeMode),
+    m_pointSprite(false),
+    m_pointSize(1.0f)
+{
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStatePoint::setMode(Mode sizeMode)
+{
+    m_sizeMode = sizeMode;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RenderStatePoint::Mode RenderStatePoint::mode() const
+{
+    return m_sizeMode;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStatePoint::enablePointSprite(bool enable)
+{
+    m_pointSprite = enable;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+bool RenderStatePoint::isPointSpriteEnabled() const
+{
+    return m_pointSprite;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStatePoint::setSize(float pointSize)
+{
+    m_pointSize = pointSize;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+float RenderStatePoint::size() const
+{
+    return m_pointSize;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RenderStatePoint::applyOpenGL(OpenGLContext* oglContext) const
+{
+    CVF_CALLSITE_OPENGL(oglContext);
+
+    // OpenGL ES does not support fixed point size
+    // Point size is always specified using GLSL's gl_PointSize
+#ifndef CVF_OPENGL_ES
+    bool openGL2Support = oglContext->capabilities()->supportsOpenGL2();
+
+    if (m_sizeMode == FIXED_SIZE)
+    {
+        if (openGL2Support)
+        {
+            glDisable(GL_PROGRAM_POINT_SIZE);
+        }
+    
+        glPointSize(m_pointSize);
+    }
+    else
+    {
+        if (openGL2Support)
+        {
+            glEnable(GL_PROGRAM_POINT_SIZE);
+        }
+        else
+        {
+            CVF_LOG_RENDER_ERROR(oglContext, "Context does not support program point size.");
+        }
+    }
+
+    if (openGL2Support)
+    {
+        if (m_pointSprite)
+        {
+            glEnable(GL_POINT_SPRITE);
+            glPointParameteri(GL_POINT_SPRITE_COORD_ORIGIN, GL_LOWER_LEFT);
+        }
+        else               
+        {
+            glDisable(GL_POINT_SPRITE);
+        }
+    }
+    else
+    {
+        if (m_pointSprite)
+        {
+            CVF_LOG_RENDER_ERROR(oglContext, "Context does not support point sprites.");
+        }
+    }
+#endif
+
+    CVF_CHECK_OGL(oglContext);
+}
+
+
+} // namespace cvf
+