问题解决了。焦点的变化也会改变观点。所以,我进行了一些几何变换,就是这样。
// vtk Element /////////////////////////////////////////////////////////
vtkRenderWindowInteractor *rwi = widget->GetInteractor();
vtkRenderer *renderer = widget->GetRenderWindow()->GetRenderers()->GetFirstRenderer();
vtkCamera *camera = renderer->GetActiveCamera();
// Camera Parameters ///////////////////////////////////////////////////
double *focalPoint = camera->GetFocalPoint();
double *viewUp = camera->GetViewUp();
double *position = camera->GetPosition();
double axis[3];
axis[0] = -camera->GetViewTransformMatrix()->GetElement(0,0);
axis[1] = -camera->GetViewTransformMatrix()->GetElement(0,1);
axis[2] = -camera->GetViewTransformMatrix()->GetElement(0,2);
// Build The transformatio /////////////////////////////////////////////////
vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New();
transform->Identity();
transform->Translate(d->center[0], d->center[1], d->center[2]);
transform->RotateWXYZ(rxf, viewUp); // Azimuth
transform->RotateWXYZ(ryf, axis); // Elevation
transform->Translate(-d->center[0], -d->center[1], -d->center[2]);
double newPosition[3];
transform->TransformPoint(position,newPosition); // Transform Position
double newFocalPoint[3];
transform->TransformPoint(focalPoint, newFocalPoint); // Transform Focal Point
camera->SetPosition(newPosition);
camera->SetFocalPoint(newFocalPoint);
// Orhthogonalize View Up //////////////////////////////////////////////////
camera->OrthogonalizeViewUp();
renderer->ResetCameraClippingRange();
rwi->Render();
试图避免通过旋转演员来实现弧球相机渲染 - 但现在我发现了你的解决方案,不由得尝试一下。谢谢! [python-vtk实现通过gist共享](https://gist.github.com/pangyuteng/facd430d0d9761fc67fff4ff2e5fffc3) – teng