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51 lines
1.2 KiB
51 lines
1.2 KiB
12 years ago
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#!/usr/bin/env node
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process.title = 'imgcat'
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var ansi = require('../../')
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, cursor = ansi(process.stdout, { enabled: true })
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, tty = require('tty')
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, Canvas = require('canvas')
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, imageFile = process.argv[2] || __dirname + '/yoshi.png'
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, screenWidth = process.stdout.isTTY ? process.stdout.getWindowSize()[0] : Infinity
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, maxWidth = parseInt(process.argv[3], 10) || screenWidth
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, image = require('fs').readFileSync(imageFile)
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, pixel = ' '
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, alphaThreshold = 0
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var img = new Canvas.Image();
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img.src = image;
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function draw () {
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var width = maxWidth / pixel.length
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, scaleW = img.width > width ? width / img.width : 1
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, w = Math.floor(img.width * scaleW)
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, h = Math.floor(img.height * scaleW);
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var canvas = new Canvas(w, h)
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, ctx = canvas.getContext('2d');
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ctx.drawImage(img, 0, 0, w, h);
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var data = ctx.getImageData(0, 0, w, h).data;
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for (var i=0, l=data.length; i<l; i+=4) {
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var r = data[i]
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, g = data[i+1]
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, b = data[i+2]
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, alpha = data[i+3];
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if (alpha > alphaThreshold) {
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cursor.bg.rgb(r, g, b);
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} else {
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cursor.bg.reset();
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}
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process.stdout.write(pixel);
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if ((i/4|0) % w === (w-1)) {
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cursor.bg.reset();
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process.stdout.write('\n');
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}
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}
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}
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draw();
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