radialRepeat.jsx

#target photoshop
// radialRepeat.jsx
// https://github.com/amatecha/
// Copyright (c) 2014 Andrew Matecha <andrew@matecha.net>
// Some rights reserved.  See LICENSE.

// DESCRIPTION
// This simple "radial repeat" script will repeat your artwork X number of times in a circular pattern.
// Start with an empty layer into which you have drawn some content.  It must be a new transparent layer, not the Background layer.

// SETTINGS
// To change the total number of nodes in the resulting graphic, change the "numberOfNodes" value below.
// If you would like to be prompted for this number every time you run the script, change "promptForNumberOfNodes" to true.
// You can get some interesting results by changing the number of nodes each time you run the script.

var numberOfNodes = 16;
var promptForNumberOfNodes = false;

// SCRIPT
var document = app.activeDocument;
var origLayer = document.activeLayer;

if (origLayer.isBackgroundLayer) {
	alert("Before using this script, the graphics you wish to repeat must be in a new layer (not the Background layer).  A new empty layer has now been created for you to use.");
	document.artLayers.add();
} else if (origLayer.kind == "LayerKind.TEXT") {
	alert("You cannot use a text layer with this script.  Please use a raster (normal) layer instead.");
} else {
	if (promptForNumberOfNodes) {
		numberOfNodes = prompt("How many total nodes/repeats do you want to have?", 16);
	}
	document.activeHistoryBrushSource = document.activeHistoryState;
	resetLayer(origLayer);
	createNodes();
	document.mergeVisibleLayers();
	document.selection.deselect();
	document.artLayers.add();
}
function resetLayer(layer) {
	layer.pixelsLocked = false;
	layer.allLocked = false;
	layer.positionLocked = false;
	layer.transparentPixelsLocked = false;
}
function createNodes() {
	var angle = 360 / parseInt(numberOfNodes);
	for (var i = 1; i < numberOfNodes; i++) {
		var newLayer = origLayer.duplicate();
		document.selection.selectAll();
		try {
			newLayer.rotate(angle * i);
		} catch(e) {
			alert("You must have some graphics in the active layer before you can use this script.");
			return;
		}
	};
}