imclab / image-rotate

Rotates a 2D ndarray

image-rotate

Rotates and translates a 2D ndarray.

Install

npm install image-rotate

Example

//Load input image
var lena = require("luminance")(require("lena"))

//Allocate storage for result
var result = require("zeros")([512, 512])

//Rotate the image
require("image-rotate")(result, lena, Math.PI / 6.0)

//Save the result
require("save-pixels")(result, "png").pipe(process.stdout)

API

require("image-rotate")(output,input,theta[,iX,iY,oX,oY])

Rotates an image by theta radians about the point iX,iY in the source image and translated to the point oX,oY in the output image.

• output is an array that gets the output of rotating the image
• input is the image which is rotated
• theta is the amount to rotate by in radians
• iX,iY is the point to rotate about (default center of input)
• oX,oY is the image of the point to rotate about in output image (default center of output)

Returns output

Credits

(c) 2013 Mikola Lysenko. MIT License