Method SetPropertiesFromModelToWorldMatrix

Rendering/Core/vtkProp3D.cxx:162–227

}

void vtkProp3D::SetPropertiesFromModelToWorldMatrix(vtkMatrix4x4* modelToWorld)
{
  vtkMatrix4x4* inputMatrix = modelToWorld;

  if (this->CoordinateSystem == PHYSICAL && this->CoordinateSystemRenderer)
  {
    // model -> intermediate -> user -> physical
    // so
    // modeltointermediate = modeltoworld * worldToPhysical * inverseUserMatrix
    vtkRenderWindow* renWin =
      static_cast<vtkRenderWindow*>(this->CoordinateSystemRenderer->GetVTKWindow());
    renWin->GetPhysicalToWorldMatrix(this->TempMatrix4x4);
    this->TempMatrix4x4->Invert();
    vtkMatrix4x4::Multiply4x4(this->TempMatrix4x4, modelToWorld, this->TempMatrix4x4);
    vtkMatrix4x4* userToIntermediate = this->GetUserMatrix();
    if (userToIntermediate)
    {
      vtkNew<vtkMatrix4x4> tmpMatrix;
      tmpMatrix->DeepCopy(userToIntermediate);
      tmpMatrix->Invert();
      vtkMatrix4x4::Multiply4x4(tmpMatrix, this->TempMatrix4x4, this->TempMatrix4x4);
    }
    inputMatrix = this->TempMatrix4x4;
  }

  if (this->CoordinateSystem == DEVICE && this->CoordinateSystemRenderer)
  {
    // modelToDevice = modelToWOrld * worldToDevice
    vtkRenderWindow* renWin =
      static_cast<vtkRenderWindow*>(this->CoordinateSystemRenderer->GetVTKWindow());
    if (renWin->GetDeviceToWorldMatrixForDevice(
          static_cast<vtkEventDataDevice>(this->CoordinateSystemDevice), this->TempMatrix4x4))
    {
      this->TempMatrix4x4->Invert();
      vtkMatrix4x4::Multiply4x4(this->TempMatrix4x4, modelToWorld, this->TempMatrix4x4);
      inputMatrix = this->TempMatrix4x4;
    }
    vtkMatrix4x4* userToIntermediate = this->GetUserMatrix();
    if (userToIntermediate)
    {
      vtkNew<vtkMatrix4x4> tmpMatrix;
      tmpMatrix->DeepCopy(userToIntermediate);
      tmpMatrix->Invert();
      vtkMatrix4x4::Multiply4x4(tmpMatrix, this->TempMatrix4x4, this->TempMatrix4x4);
    }
  }

  double* mat = inputMatrix->GetData();
  this->Origin[0] = 0.0;
  this->Origin[1] = 0.0;
  this->Origin[2] = 0.0;
  this->Position[0] = mat[3];
  this->Position[1] = mat[7];
  this->Position[2] = mat[11];

  this->Scale[0] = sqrt(mat[0] * mat[0] + mat[4] * mat[4] + mat[8] * mat[8]);
  this->Scale[1] = sqrt(mat[1] * mat[1] + mat[5] * mat[5] + mat[9] * mat[9]);
  this->Scale[2] = sqrt(mat[2] * mat[2] + mat[6] * mat[6] + mat[10] * mat[10]);