clear abstract method
- Rect? target
 
Clears the buffer to the PixelFormat.zero value.
This is equivalent to calling fill with the zero value of the format.
If a target rectangle is provided, only the pixels within that rectangle
will be cleared, and the rectangle will be clipped to the bounds of the
buffer. If omitted, the entire buffer will be cleared.
Example
final pixels = IntPixels(2, 2);
pixels.clear();
pixels.clear(Rect.fromLTWH(1, 0, 1, 2));
Implementation
void clear([Rect? target]);