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raw-image
Advanced tools
Readme
A helper for manipulating raw image data and rendering it to a canvas.
Install the package.
npm install raw-image --save
Require the module.
var RawImage = require("raw-image");
Note: RawImage needs to run a browser context. You can use something like browserify to bundle RawImage as a dependency. Take a look at the example if you need help with this.
<canvas id="canvas"></canvas>
<script>
var image = new RawImage("image.png");
image.onload = function () {
// Get the dimensions of the image.
image.width;
image.height;
// Get the color of a pixel.
image.get(50, 50);
// Set the color of a pixel.
var white = {
"red": 255,
"green": 255,
"blue": 255,
"alpha": 255
};
image.set(50, 50, white);
// Render the image to a canvas.
var canvas = document.getElementById("canvas");
image.render(canvas);
}
</script>
If you change the image, you'll need to re-render it.
You can change the dimensions of the image by passing a width and/or a height:
new RawImage("image.png", { width: 100, height: 100 });
The aspect ratio of the image is preserved and the image will not exceed 100x100.
The get and set methods will respect the new image dimensions.
## Serialization
Once the image has loaded, you can serialize your image to json:
var image = new RawImage("image.png");
var json;
image.onload = function () {
json = JSON.stringify(image);
};
var clone = RawImage.fromJson(json);
clone.get(50, 50);
Please send a pull request or open an issue.
You should follow me on twitter.
FAQs
A helper for manipulating raw image data and rendering it to a canvas.
We found that raw-image demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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