To change image, drag-and-drop an image file over the canvas
Horizontal radius
Vertical radius
Angle
Include red
Include green
Include blue
Include alpha
Exclude transparent pixels
Premultiply
Opacity
Memoize filter
To note: Javascript is not running in this browser environment. The canvas element is ignored; instead a placeholder image displays where the canvas would have appeared.
Test purpose
Create a test Picture entity
Create a gaussianblur filter and apply it to the test entity
Update filter attributes and observe the effect they have on the entity