- load OBJ file
- set offscreen rendering
- set roll angle of the camera
- get Mat screenshot of the current scene
- remove all lights from the scene
- add a custom light in the scene
- modify the size of the WImage3D widget
- added ambient property for the widget
Changed Vec3d in cv::viz::Color
Renamed method getMatScreenshotin getScreenshot
Modified showWidget
Fixed on viz::Color and reverted fix on vtkProp3D
Removed cameraRoll method
Merged load mesh method (for ply and obj file)
Fixed doc
Fixed cv::viz::WImage3D::setSize for vtk5.8
Fixed enum for cv::viz::Mesh::load
