Package Exports

tga
tga/src/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (tga) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

TGA

This is a pure Node.js module for parse or write tga image file.

Requirements

Node.js v6

Installation

$ npm install tga --save

API

Class TGA(buffer, opt = { dontFixAlpha: false })

buffer: buffer is the tga file Buffer(fs.readFile)
opt: tga parse options
- dontFixAlpha: some tga image is fully transparent, it will convert the alpha chanel to 255, you can turn this on if you dont want this feature.

TGA.createTgaBuffer(width, height, pixels)

width: image width
height: image height
pixels(Uint8Array): pixels data, [r, g, b, a, r, g, b, a]

TGA.getHeader(buffer)

buffer: buffer is the tga file Buffer(fs.readFile)
return a object contain the tga header info such as width, height and so on

Example

var fs = require('fs');
var TGA = require('tga');
var tga = new TGA(fs.readFileSync('./test.tga'));
console.log(tga.width, tga.height);
for (var i = 0; i < tga.pixels.length; i += 4) {
    // the range of r, g, b and a is [0, 255]
    console.log(tga.pixels[i], tga.pixels[i + 1], tga.pixels[i + 2], tga.pixels[i + 3]);
}

// save as another tga image
var buf = TGA.createTgaBuffer(tga.width, tga.height, tga.pixels);
fs.writeFileSync('./out.tga', buf);

// save the tga as png
var PNG = require('pngjs').PNG;
var png = new PNG({
    width: tga.width,
    height: tga.height
});
png.data = tga.pixels;
png.pack().pipe(fs.createWriteStream('./test.png'));