c# – VTK(Activiz 5.8.0)纹理影响不透明度

我使用vtkTextureMapToSphere将纹理映射到对象.请注意,下面代码中的边界表示我应用纹理的_polydata对象的边界框.

vtkTextureMapToSphere textureMapper = vtkTextureMapToSphere.New();
textureMapper.SetInput(_polydata);
textureMapper.SetCenter(bounds.center[0],bounds.center[1],bounds.center[2]);
textureMapper.PreventSeamOn();

vtkTransformTextureCoords transformMap = vtkTransformTextureCoords.New();
double factorEnlarge = 4;
double scale = bounds.dimensions.Sum() / bounds.dimensions.Length / factorEnlarge;
transformMap.SetInputConnection(textureMapper.GetOutputPort());
transformMap.SetScale(scale,scale,scale);

vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
mapper.SetInputConnection(transformMap.GetOutputPort());

vtkActor actor = vtkActor.New();
actor.SetTexture(texture);
actor.GetProperty().SetColor((double)color.R / 255,(double)color.G / 255,(double)color.B / 255);
actor.GetProperty().SetOpacity(alpha);
actor.SetMapper(mapper);
actor.GetProperty().SetInterpolationToPhong();

renderer.AddActor(actor);

编辑

关闭vtkTextureMapToSphere的PreventSeam选项后,颜色的差异消失了.但是,无论您通过网格的两个以上表面查看(例如网格中有空洞的位置),在着色中仍然存在明显的差异.