isTransparent

isTransparent(ctx, x, y, tolerance): boolean

Defined in: src/util/misc/isTransparent.ts:10

Returns true if context has transparent pixel at specified location (taking tolerance into account)

Parameters

ctx

CanvasRenderingContext2D

context

x

number

x coordinate in canvasElementCoordinate, not fabric space. integer

y

number

y coordinate in canvasElementCoordinate, not fabric space. integer

tolerance

number

Tolerance pixels around the point, not alpha tolerance, integer

Returns

boolean

true if transparent