31 lines
No EOL
778 B
Dart
31 lines
No EOL
778 B
Dart
import 'dart:html';
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import 'package:dart_floyd_steinberg_dithering/Dither.dart';
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CanvasElement input;
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CanvasElement output;
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ImageElement inputImg;
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ImageElement outputImg;
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void main() {
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inputImg = new ImageElement(src: 'kitten.jpg', width: 712, height: 470);
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input = document.querySelector('#input');
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output = document.querySelector('#output');
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inputImg.onLoad.listen(imgLoaded);
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}
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void imgLoaded(Event e) {
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print("image loaded");
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input.context2D.drawImage(inputImg, 0, 0);
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PixelArray px = new PixelArray.fromImageData(getImageData(input), 712);
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px = Pixed.greyscale(px);
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output.context2D.putImageData(px.toImageData(), 0, 0);
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}
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ImageData getImageData(CanvasElement canvas) {
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return canvas.context2D.getImageData(0, 0, canvas.width, canvas.height);
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} |