mitkGLMapper.cpp

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/*===================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center,
Division of Medical and Biological Informatics.
All rights reserved.

This software is distributed WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.

See LICENSE.txt or http://www.mitk.org for details.

===================================================================*/

#include "mitkGLMapper.h"
#include "mitkGL.h"

mitk::GLMapper::GLMapper()
{
}

mitk::GLMapper::~GLMapper()
{
}

void mitk::GLMapper::MitkRender(mitk::BaseRenderer *renderer, mitk::VtkPropRenderer::RenderType type)
{
  bool visible = true;

  GetDataNode()->GetVisibility(visible, renderer, "visible");

  if (!visible)
    return;

  // the if-condition ensures that Paint(renderer) is only called once, otherwise it will be called four times
  // it does not mean that OpenGL renders only an opaque scene
  if (type == mitk::VtkPropRenderer::Opaque)
    Paint(renderer);
}

bool mitk::GLMapper::IsVtkBased() const
{
  return false;
}

void mitk::GLMapper::ApplyColorAndOpacityProperties(mitk::BaseRenderer *renderer, vtkActor * /*actor*/)
{
  float rgba[4] = {1.0f, 1.0f, 1.0f, 1.0f};
  // check for color prop and use it for rendering if it exists
  GetDataNode()->GetColor(rgba, renderer, "color");
  // check for opacity prop and use it for rendering if it exists
  GetDataNode()->GetOpacity(rgba[3], renderer, "opacity");

  glColor4fv(rgba);
}