Save Slice Images

/**
 * Export every slice from a user-selected view as rendered image files.
 *
 * On each run, the script asks which view to export.
 *
 * Integer to view mapping:
 * 0 = Sagittal
 * 1 = Coronal
 * 2 = Transverse
 *
 * Edit the configuration values below as needed, then run the script in VivoQuant.
 */
var OUTPUT_DIR = "/Users/justin/Desktop/vq_export";
var FILE_PREFIX_BASE = "slice";
var EXTENSION = ".png";
var COLOR_BAR_TYPE = 0;
var MAGNIFICATION = 1;
var ZERO_PADDING_DIGITS = 3;
function padNumber(value, width) {
  var text = String(value);
  while (text.length < width) {
    text = "0" + text;
  }
  return text;
}
function ensureTrailingSlash(path) {
  if (path.length === 0) {
    return path;
  }
  var last = path.charAt(path.length - 1);
  if (last === "/" || last === "\\") {
    return path;
  }
  return path + "/";
}
function planeName(plane) {
  if (plane === 0) return "sagittal";
  if (plane === 1) return "coronal";
  return "transverse";
}
function promptForPlane() {
  var plane = VQ.getInt(
    "Export View",
    "Enter view number.\n0 = Sagittal\n1 = Coronal\n2 = Transverse",
    1,
    0,
    2,
    1
  );
  return parseInt(plane, 10);
}
function exportSlicesForPlane() {
  var plane = promptForPlane();
  if (isNaN(plane) || plane < 0 || plane > 2) {
    VQ.showMessage("Export cancelled: invalid view number.", true);
    return;
  }
  var vc = VQ.controller();
  var mw = VQ.mainWin();
  var outDir = ensureTrailingSlash(OUTPUT_DIR);
  var prefix = planeName(plane) + "_" + FILE_PREFIX_BASE;
  var maxSlice = vc.getMax(plane);
  var total = maxSlice + 1;
  VQ.debug("Exporting " + total + " " + planeName(plane) + " slices to " + outDir);
  for (var i = 0; i <= maxSlice; i++) {
    vc.setPos(plane, i);
    var filename =
      outDir +
      prefix +
      "_" +
      padNumber(i, ZERO_PADDING_DIGITS) +
      EXTENSION;
    mw.saveImage(filename, plane + 1, COLOR_BAR_TYPE, 0, MAGNIFICATION, "");
  }
  VQ.showMessage(
    "Export complete. Saved " + total + " " + planeName(plane) + " slice images.",
    true
  );
}
try {
  exportSlicesForPlane();
} catch (err) {
  VQ.debug("Slice export aborted: " + err);
  VQ.showMessage("Slice export aborted: " + String(err), true);
}