menus pushed too far back when order changed

[sjpt]

When folders with ortho camera are reordered they are pushed to the back.
This can have issues with big depths.
It would be best to preserve the specified z-values as far as possible.
see e.g. code below

function orthographicFolderLayout() {
  var cam = topFolderStack[0].userData.isOrthographic;
  if (!cam || topFolderStack.length <= 1) return;
    //camBoxSetup(cam);

    // original code laid them out right at back,
    // so odd z-buffer effects made them white on black, and often hidden anyway
    // This respects the original z values as much as possible, but applies them in appropriate order
    // If there is a clash of x values then the originals are (slightly) modified
    var near = cam.near,
      far = cam.far,
      n = topFolderStack.length,
      zs = topFolderStack.map(f => f.position.z).sort((a,b)=>a-b);  // old z values small to big
      zs[-1] = -9999;
      zs.forEach( (z,i) => zs[i] = Math.max(zs[i], zs[i-1] + 10*Layout.PANEL_DEPTH));  // in case of equals

  topFolderStack.forEach(function (f, i) {
    // var z = -0.9 * far + i * 10 * Layout.PANEL_DEPTH;    // original code, too near back
    // var z = - (near + (n-i) * 10 * Layout.PANEL_DEPTH);  // variant code stacking from front
    var z = zs[i];                                          // use sorted (?modified) old z-values
    if (z !== f.position.z) {
      f.position.z = z;
      f.updateMatrix();
      f.fixFolderPosition();
    }
  });
  if (topFolderStack[n - 1].position.z >= near - Layout.PANEL_DEPTH) {
    console.log("GUIVR Warning: likely problem with z-order in orthographicFolderLayout");
  }
  //console.log(`[${topFolderStack.map(f=>f.folderName + '\t: ' + f.position.z).join('\n')}]`);
}

[sjpt]

Above code fails when there are hidden top folders with inappropriate z values.
Code below ignores this:

function orthographicFolderLayout() {
var cam = topFolderStack[0].userData.isOrthographic;
if (!cam || topFolderStack.length <= 1) return;

//camBoxSetup(cam);
const tfs = topFolderStack.filter(x => x.visible);
var near = cam.near,
far = cam.far,
n = tfs.length,
zs = tfs.map(f => f.position.z).sort((a,b)=>a-b); // old z values small to big
zs[-1] = -9999;
zs.forEach( (z,i) => zs[i] = Math.max(zs[i], zs[i-1] + 10*Layout.PANEL_DEPTH)); // in case of equals

tfs.forEach(function (f, i) {
// var z = -0.9 * far + i * 10 * Layout.PANEL_DEPTH;    // original code, too near back
// var z = - (near + (n-i) * 10 * Layout.PANEL_DEPTH);  // variant code stacking from front
var z = zs[i];                                          // use sorted (?modified) old z-values
if (z !== f.position.z) {
  f.position.z = z;
  f.updateMatrix();
  f.fixFolderPosition();
}

});
if (tfs[n - 1].position.z >= near - Layout.PANEL_DEPTH) {
console.log("GUIVR Warning: likely problem with z-order in orthographicFolderLayout");
}
//console.log([${topFolderStack.map(f=>f.folderName + '\t: ' + f.position.z).join('\n')}]);
}