0.1.0-alpha.5

Haze got about ten times cheaper and now fills the room rather than only the
beams, the scene finally has ambient light, and objects can be built, edited and
organised without leaving the app.

Haze costs a tenth of what it did

• About 10 ms of GPU time down to about 1 ms, measured across twelve beams
  filling the screen.

  Every fragment of every beam was evaluating four octaves of simplex noise --
  a lattice permutation, eight gradient dots and a normalisation, four times
  over, for each pixel the beams covered. The same field is now baked once into
  a small tiling 3D texture and read back with four filtered fetches.

  Those four fetches cost what one did, which says the bottleneck was never
  bandwidth. There is room to spend on quality if it is ever wanted.

• One field for every fixture type. Beams, LED strips and panel halos read
  the same noise at the same scale through one shared shader. The glows had been
  sampling a flat slice with time standing in for the third axis, through a
  private feature size the haze scale control could not reach -- so a glow and a
  beam standing in the same air disagreed about how coarse that air was.

The room has light of its own

• Ambient light, where there was none. A single directional lamp meant every
  surface facing away from one corner rendered pure black. An environment lights
  them now, which also gives metals something to reflect.

• Haze in the air itself. Everything that showed haze was geometry -- a beam
  cone, a glow billboard -- so the space between fixtures was perfectly clear. A
  depth-aware pass now walks each view ray through the same field, so the room
  has body.

• House lights up clears the room, the way work light does, while beams and
  LED glows keep theirs. The background lifts to a working grey and returns to
  the chosen colour when the house goes down.

Objects

• Build them in the app. Cubes, cylinders, spheres and planes, with a name,
  a size in millimetres of a metre, and a colour.

• They stay editable. A created object keeps its parameters in the show, so
  it can be widened or recoloured whenever -- select it and the same fields that
  made it are there to change. Creating one used to mint a permanent library
  entry and freeze it, so a wider cube meant a second cube.

• Save to library is a separate, deliberate act, and it saves a template:
  the object in the scene keeps its own parameters, so editing it later cannot
  reach back and change everything else stamped from that entry.

• Folders, one level, in the object library. Objects are referenced by path
  now, so two folders may each hold a truss; shows written before folders
  existed still resolve.

• A library that ships with the app, merged with your own. Yours wins on a
  clash, so a supplied model can be replaced without deleting anything, and
  deleting yours brings it back.

• A browser with pictures. The Objects tab is folders of square tiles, and a
  preview is rendered for anything that has none and stored beside the model --
  once in the life of a library, not once per session.

Fixed

• Undo and redo have never worked. They were declared static while the Edit
  menu called them on the show, so both threw the moment they were clicked.

• Selection is one thing now. It had been kept in three places at once --
  the route, an event and the 3D view -- with each consumer holding its own
  copy and nothing reconciling them. Adding several fixtures left the
  single-fixture panel up; an object picked in 3D never lit its row; selecting a
  fixture left another kind's widgets on screen. Everything that shows a
  selection now reads one source.

• Everything added to the scene arrives selected -- all of it, not just the
  first of a batch -- so the next step is available without selecting it again.
  Applying an arrangement keeps the selection too.

• Screen recordings no longer leak. Each one stayed in memory for the rest
  of the session, and the download threw on its way out.