image-js/lib/draw/drawPoints.js

Image processing and manipulation in JavaScript

import { Image } from '../Image.js';
import { getDefaultColor } from '../utils/getDefaultColor.js';
import { getOutputImage, maskToOutputMask } from '../utils/getOutputImage.js';
import { setBlendedVisiblePixel } from '../utils/setBlendedVisiblePixel.js';
import checkProcessable from '../utils/validators/checkProcessable.js';
import { validateColor } from '../utils/validators/validators.js';
/**
 * Draw a set of points on an image or a mask.
 * @param image - The image on which to draw the points.
 * @param points - Array of points.
 * @param options - Draw points on Image options.
 * @returns New mask.
 */
export function drawPoints(image, points, options = {}) {
    const { color = getDefaultColor(image), origin = { row: 0, column: 0 } } = options;
    let newImage;
    if (image instanceof Image) {
        newImage = getOutputImage(image, options, { clone: true });
        validateColor(color, newImage);
    }
    else {
        newImage = maskToOutputMask(image, options, { clone: true });
    }
    checkProcessable(newImage, {
        bitDepth: [1, 8, 16],
    });
    for (const point of points) {
        setBlendedVisiblePixel(newImage, Math.round(origin.column + point.column), Math.round(origin.row + point.row), color);
    }
    return newImage;
}
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