Closed soupman99 closed 7 years ago
Added sampleFn(canvas) as function property on the cropper settings where you can manipulate the output image - see example #3 from the sample app (or) : this.cropperSettings3.resampleFn = (buffer:HTMLCanvasElement) => {
var canvasContext = buffer.getContext('2d');
var imgW = buffer.width;
var imgH = buffer.height;
var imgPixels = canvasContext.getImageData(0, 0, imgW, imgH);
for(let y = 0; y < imgPixels.height; y++){
for(let x = 0; x < imgPixels.width; x++){
var i = (y * 4) * imgPixels.width + x * 4;
var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
imgPixels.data[i] = avg;
imgPixels.data[i + 1] = avg;
imgPixels.data[i + 2] = avg;
}
}
canvasContext.putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
};
Any chance of incorporating a resampling function to alleviate jagged edges when very large images are scaled & cropped?
I'd do it myself, but haven't been able to figure out how to incorporate a function like that.