Praneeth Shetty
Praneeth Shetty
Adding Weekly Blogpost 
Adding Weekly Blogpost. 
This feature adds grouping functionality to the shapes present in the `DrawPanelUI`. PR #623 needs to be merged before this. To group shapes: - Go to selection mode - Hold...
Adding a `RingSlider2D` to interactively rotate any shape from the center. Demo:
Creating a SpinBoxUI with tutorials and tests. 
## Description As we can see below the Earth's texture (maybe other textures too) in the tutorials are inverted. This creates a miss-match in the coordinate points and the locations...
By Rferencing PR #285 Implementing Scrollbar as an individual element. This makes ScrollBar more flexible and code duplicacy is avoided. 
As in the previous implementation, the `Panel2D` used `Rectangle2D` which affected the performance so replacing it with the `TexturedActor2D` 
Creating a ProgressUI Widget which can be used as Loading bars. https://user-images.githubusercontent.com/64432063/128671950-849c19b5-17ca-47a2-92a5-3f6e357538c5.mp4 https://user-images.githubusercontent.com/64432063/131996694-e7cf3e34-b010-499d-a7d7-832c2348859e.mp4
Updating the load_image method to directly convert the image into vtk_imagedata using the utils function