Method DrawPolygon

Rendering/ContextOpenGL2/vtkOpenGLContextDevice2D.cxx:1373–1401

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//------------------------------------------------------------------------------
void vtkOpenGLContextDevice2D::DrawPolygon(float* f, int n)
{
  if (SkipDraw())
  {
    return;
  }

  if (!f || n <= 0)
  {
    vtkWarningMacro(<< "Points supplied that were not of type float.");
    return;
  }

  // convert polygon to triangles
  std::vector<float> tverts;
  int numTVerts = 3 * (n - 2);
  tverts.reserve(numTVerts * 2);
  for (int i = 0; i < n - 2; i++)
  {
    tverts.push_back(f[0]);
    tverts.push_back(f[1]);
    tverts.push_back(f[i * 2 + 2]);
    tverts.push_back(f[i * 2 + 3]);
    tverts.push_back(f[i * 2 + 4]);
    tverts.push_back(f[i * 2 + 5]);
  }

  this->CoreDrawTriangles(tverts);
}

//------------------------------------------------------------------------------
void vtkOpenGLContextDevice2D::DrawColoredPolygon(