Last modified: 2013-3-2

Class ImageData

Canvas-Api for Max (can be found in MAX_PATH/Cycling '74/jsextensions/)

interface ImageData.

Defined in: CanvasExtension.js

Class Summary
Constructor Attributes	Constructor Name and Description
	ImageData(sketchimage) ImageData.

Field Summary
Field Attributes	Field Name and Description
Array	data One dimensional Array of RGBA pixel values.
Integer	height Height of the image.
Image	source The Image object.
Integer	width Width of the image

Method Summary
Method Attributes	Method Name and Description
void	set(index, value) calls this.source.setpixel().

Class Detail

ImageData

(sketchimage)

ImageData.

Defined in: CanvasExtension.js

Example:

function getImageData(filename){
	var sketchimage = new Image(filename);
	return new ImageData(sketchimage);
}

Parameters:
{Image} sketchimage

Field Detail

{Array}

data

One dimensional Array of RGBA pixel values. Integer values 0-255

Example:

//pseudocode to illustrate the structure of this array
var r,g,b,alpha;
for(var i = 0; i < imageDataInstance.data.length; i+=4){
	r = imageDataInstance.data[i];
	g = imageDataInstance.data[i+1];
	b = imageDataInstance.data[i+2];
	alpha = imageDataInstance.data[i+3];
}

{Integer}

height

Height of the image.

{Image}

source

The Image object.

{Integer}

width

Width of the image

Method Detail

{void}

set

(index, value)

calls this.source.setpixel(). See Image.setpixel()

Parameters:
{Integer} index
{Integer} value

Classes

Max/MSP Jitter Javascript Reference