[RoiManager to SVG] Converts simple polygon ROIs from the ROI Manager to an SVG file #fiji #svg #roi-to-svg #conversion #imagej #macro

RoiManager to SVG.ijm

// Reference: https://forum.image.sc/t/basic-macro-help-rois-to-svg/7861/3
#@ File svgFile ("style=save")

svg = "<?xml version=\"1.0\" ?><svg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' xmlns:jfreesvg='http://www.jfree.org/jfreesvg/svg' width='"+getWidth()+"' height='"+getHeight()+"'>\n";
n = roiManager("count");
for (j = 0; j < n; j++){

	roiManager("select", j);
	getSelectionCoordinates(x, y);
	text = "<path d='m";
	x2 = y2 = 0;
	for (i = 0; i < x.length; i++) {
	    text += " " + (x[i] - x2) + "," + (y[i] - y2);
	    x2 = x[i];
	    y2 = y[i];
	}
	text += " z' />\n";
	svg += text;
} 

svg += "</svg>";
File.saveString(svg, svgFile);