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custom/painter
Painter
scanCanvas
Function scanCanvas
scanCanvas
(
ctx
:
CanvasRenderingContext2D
,
x
:
number
,
y
:
number
,
w
:
number
,
h
:
number
,
cb
:
(
px
:
number
,
py
:
number
,
color
:
[
r
:
number
,
g
:
number
,
b
:
number
,
a
:
number
]
,
)
=>
void
|
[
number
,
number
,
number
,
number
]
,
)
:
void
Parameters
ctx
:
CanvasRenderingContext2D
x
:
number
y
:
number
w
:
number
h
:
number
cb
:
(
px
:
number
,
py
:
number
,
color
:
[
r
:
number
,
g
:
number
,
b
:
number
,
a
:
number
]
,
)
=>
void
|
[
number
,
number
,
number
,
number
]
Returns
void
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