JS-script for Adobe Photoshop 2017, that finds centroid of svg figures

Get_Centroid_coordinates.jsx

/*
Get_Centroid_coordinates.jsx
A Javascript for Adobe Photoshop 2017.
Purpose: Find the centroid (center of gravity) of SVG path and point by guidelines.
Based on formula for finding Centroid of non-self-intersecting closed polygon
To Use: Select layer which includes normal path. Call the script.
Author: Ivan Grekov
*/

// reset unites for proper navigation & sizes
app.preferences.rulerUnits = Units.PIXELS;
app.preferences.typeUnits = TypeUnits.PIXELS;

var doc = app.activeDocument;
var svgPaths = doc.pathItems;

function Point(x, y) {
    this.x = x;
    this.y = y;
}

function Region(points) {
    this.points = points || [];
    this.length = points.length;
}

Region.prototype.area = function () {
    var area = 0,
        i,
        j,
        point1,
        point2;

    for (i = 0, j = this.length - 1; i < this.length; j=i,i++) {
        point1 = this.points[i];
        point2 = this.points[j];
        area += point1.x * point2.y;
        area -= point1.y * point2.x;
    }
    area /= 2;

    return area;
};

Region.prototype.centroid = function () {
    var x = 0,
        y = 0,
        i,
        j,
        f,
        point1,
        point2;

    for (i = 0, j = this.length - 1; i < this.length; j=i,i++) {
        point1 = this.points[i];
        point2 = this.points[j];
        f = point1.x * point2.y - point2.x * point1.y;
        x += (point1.x + point2.x) * f;
        y += (point1.y + point2.y) * f;
    }

    f = this.area() * 6;

    return new Point(x / f, y / f);
};


var figureCoords = [];

// call loop iteration for each svg layer
for(i = 0; i < svgPaths.length; i++){
	var svgPath = svgPaths[i];
	var subPaths = svgPath.subPathItems;

	// call loop iteration  for each svg path
	for(k = 0; k < subPaths.length; k++){
		var subPath = subPaths[k];
		var points = subPath.pathPoints;

		// call loop iteration for each point
		for(l = 0; l < points.length; l++){
			var anchor = points[l].anchor;

			var x = anchor[0];
			var y = anchor[1];

			figureCoords.push({x: x, y: y});
		}
		//
		var region = new Region(figureCoords);
		var centroidData = region.centroid();
		
		activeDocument.guides.add(Direction.VERTICAL, parseInt(doc.width) - centroidData.x + " pixels");
		activeDocument.guides.add(Direction.HORIZONTAL, parseInt(doc.height) - centroidData.y + " pixels");
	}
}