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- const getAverageRGB = (frame) => {
- const length = frame.data.length / 4;
- let r = 0;
- let g = 0;
- let b = 0;
- for (let i = 0; i < length; i++) {
- r += frame.data[i * 4 + 0];
- g += frame.data[i * 4 + 1];
- b += frame.data[i * 4 + 2];
- }
- return {
- r: r / length,
- g: g / length,
- b: b / length,
- };
- };
- // ...
- for (let y = 0; y < height; y += fontHeight) {
- for (let x = 0; x < width; x += fontWidth) {
- const frameSection = hiddenContext.getImageData(x, y, fontWidth, fontHeight);
- const { r, g, b } = getAverageRGB(frameSection);
- outputContext.fillStyle = `rgb(${r},${g},${b})`;
- outputContext.fillRect(x, y, fontWidth, fontHeight);
- }
- }
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