Scrawl-canvas v8 - Filters test 027

Test purpose

• Create a test Picture entity
• Create a reducePalette filter and apply it to the test entity
• Update filter attributes and observe the effect they have on the entity

Note that this is a resource-intensive filter. Memoization is strongly advised!

Known issue: Filter memoization will, sometimes, kill Safari-based browsers for as-yet-unknown reasons - see demo Filters-001 for details. For now, if Scrawl-canvas detects that the user is viewing the canvas in a Safari-based browser, it will ignore requests to memoize filters.

Touch test: not required

Annotated code