December 2010
Intermediate to advanced
110 pages
2h 31m
English
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Name
CRC.createImageData() — creates a new ImageData object
Synopsis
ImageData createImageData(w,h) ImageData createImageData(ImageDatadata)
Arguments
w,hThe desired ImageData width and height, in CSS pixels
dataAn existing ImageData object that specifies the size of the ImageData to be created
Returns
A newly created ImageData object that has the specified width
and height or has the same size as
data.
Description
Returns a new ImageData object with the specified width and height
or the same dimensions as data. All pixels
within this new ImageData object
are initialized to transparent black (all color components and alpha are
0).
The w and h
arguments specify image dimensions in CSS pixels. Implementations are
allowed to map single CSS pixels to more than one underlying device
pixel. The width and height
properties of the returned ImageData object specify the image dimensions
in device pixels, and these values may not match the
w and h
arguments.
See Also
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.