Function extractPixelData

frontend/src/utility-functions/rasterization.ts:55–61

(imageData: ImageBitmapSource)

/// Convert an image source (e.g. PNG document) into pixel data, a width, and a height
export async function extractPixelData(imageData: ImageBitmapSource): Promise<ImageData> {
	const canvasContext = await imageToCanvasContext(imageData);
	const width = canvasContext.canvas.width;
	const height = canvasContext.canvas.height;

	return canvasContext.getImageData(0, 0, width, height);
}

export async function imageToCanvasContext(imageData: ImageBitmapSource): Promise<CanvasRenderingContext2D> {
	// Special handling to rasterize an SVG file