image-data-resizer

Install globally with npm

$ npm i -g image-data-resizer

What is it

Computes rescaling coordinates (padding and new size) of an image to be put into a canvas, by keeping aspect ratio.

E.g., compute vertical padding of wide figures:

// Canvas Dimensions (width and height)
var cd = {
    cw: 100,
    ch: 100
};

// Pass in Dimensions (iw = image width, ih = image height)
computeAllPosAndSizeNoFit({
    iw: 400,
    ih: 100
    }, cd)

//You get:
//
//{
//  dx: 0,     <- h padding
//  dy: 37.5,  <- v padding
//  scaleh: 0.25,
//  scalew: 0.25,
//  nw: 100,   <- new width
//  nh: 25     <- new height
//}

API

fitHeight()

reduces height and width

fitWidth()

reduces width and height

Author

• Vittorio Zaccaria

License

Copyright © 2015 Vittorio Zaccaria Released under the BSD license.

This file was generated by verb-cli on October 24, 2015.