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viscenter / layered-viewer

(Archive Repository) Registered image viewer based on OpenSeadragon
https://gitlab.com/educelab/vislayers
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Circular flashlight #4

Closed stephenrparsons closed 9 years ago

stephenrparsons commented 9 years ago

try this http://stackoverflow.com/questions/10396991/clearing-circular-regions-from-html5-canvas