Demo Filters 012

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 matrix, matrix5 filters; apply them to the test entity
Update filter attributes and observe the effect they have on the entity

Known issue: the 'premultiplied' option is designed for kernels whose total weights sum to ~1 (such as blur filters. For kernels whose summed weights approach zero (such as edge detection filters) the premultiplied option leads to unwanted results and should be avoided.

Touch test: not required

Annotated code

Scrawl-canvas v8 - Filters test 012

Parameters for: matrix, matrix5 filters

To change image, drag-and-drop an image file over the canvas

Test purpose