#include "GL_NormalRenderer.h"
#include "GL_NormalRendererGeometry3DVisitor.h"
#include "GL_NormalRendererGroupingVisitor.h"

namespace X3DTK {
namespace GL {

NormalRenderer::NormalRenderer()
{
  // The algorithm for drawing the normals is based upon a DFS graph traversal 
  // of the GL scene graph.
  setGraphTraversal(new DFSGraphTraversal());
  
  // Setting the component visitor to the tree traversal algorithm.
  setComponentVisitor(new NormalRendererGeometry3DVisitor());
  setComponentVisitor(new NormalRendererGroupingVisitor());
}

void NormalRenderer::setNormalLength(float value)
{
  Singleton<NormalRendererStateVariables>::getInstance()->setNormalLength(value);
}

void NormalRenderer::render(SFNode N) const
{
  glDisable(GL_COLOR_MATERIAL);
  traverse(N);
}

}
}