Method LoadSampler

IO/Geometry/vtkGLTFDocumentLoaderInternals.cxx:930–1032

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//------------------------------------------------------------------------------
bool vtkGLTFDocumentLoaderInternals::LoadSampler(
  const nlohmann::json& root, vtkGLTFDocumentLoader::Sampler& sampler)
{
  using Sampler = vtkGLTFDocumentLoader::Sampler;
  if (!root.is_object())
  {
    vtkErrorWithObjectMacro(this->Self, "Invalid sampler object");
    return false;
  }

  if (root.empty())
  {
    sampler.MagFilter = Sampler::FilterType::LINEAR;
    sampler.MinFilter = Sampler::FilterType::NEAREST_MIPMAP_LINEAR;
    sampler.WrapT = Sampler::WrapType::REPEAT;
    sampler.WrapS = Sampler::WrapType::REPEAT;
    return true;
  }

  int tempIntValue = 0;
  if (!vtkGLTFUtils::GetIntValue(root, "magFilter", tempIntValue))
  {
    sampler.MagFilter = vtkGLTFDocumentLoader::Sampler::FilterType::LINEAR;
  }
  else
  {
    switch (static_cast<vtkGLTFDocumentLoader::Sampler::FilterType>(tempIntValue))
    {
      case Sampler::FilterType::LINEAR:
      case Sampler::FilterType::NEAREST:
        sampler.MagFilter = static_cast<Sampler::FilterType>(tempIntValue);
        break;
      default:
        sampler.MagFilter = Sampler::FilterType::LINEAR;
        vtkWarningWithObjectMacro(this->Self, "Invalid sampler.magFilter value.");
    }
  }

  if (!vtkGLTFUtils::GetIntValue(root, "minFilter", tempIntValue))
  {
    sampler.MinFilter = Sampler::FilterType::NEAREST_MIPMAP_LINEAR;
  }
  else
  {
    switch (static_cast<Sampler::FilterType>(tempIntValue))
    {
      case Sampler::FilterType::LINEAR:
      case Sampler::FilterType::LINEAR_MIPMAP_LINEAR:
      case Sampler::FilterType::LINEAR_MIPMAP_NEAREST:
      case Sampler::FilterType::NEAREST:
      case Sampler::FilterType::NEAREST_MIPMAP_LINEAR:
      case Sampler::FilterType::NEAREST_MIPMAP_NEAREST:
        sampler.MinFilter = static_cast<Sampler::FilterType>(tempIntValue);
        break;
      default:
        sampler.MinFilter = Sampler::FilterType::NEAREST_MIPMAP_LINEAR;
        vtkWarningWithObjectMacro(this->Self, "Invalid sampler.minFilter value.");
    }