{"params":{"colorway":{"type":"choice","default":"signal-red","label":"Colorway","describe":"Curated scheme. signal-red: the whole stop painted bright signal red, beam and frame alike, with a white band, on a brown ballast bed over a pale slab with grey sleepers (the classic). company-green: red beam with a cream band on a green frame. yard-black: black beam with a white band on a dark grey frame, dark creosoted sleepers on grey cinder ballast for a goods-yard siding. limestone: the red stop on pale limestone ballast with darker grey sleepers. royal-blue: the kit-wide royal-blue livery, a royal blue beam and frame with a cream band.","options":["signal-red","company-green","yard-black","limestone","royal-blue"]},"beam":{"type":"color","default":"#a14d3d","label":"Beam paint","describe":"Albedo of the buffer beam above and below its band, and its ends. Fades toward a dusty pink-grey above wear 0.3."},"band":{"type":"color","default":"#f2f2ec","label":"Band","describe":"Albedo of the raised band wrapped round the middle of the beam, front, back and ends."},"frame":{"type":"color","default":"#903330","label":"Frame paint","describe":"Albedo of the painted ironwork: the bent-rail frame with its I-beam soles, base ties and base plates, the buffer housings, and the iron fixing plates of the timber frame. Above wear 0.3 the paint browns toward the rust colour while plates, ties and housings rust through."},"timber":{"type":"color","default":"#968d84","label":"Timber","describe":"Albedo of the sleepers and the posts, struts and sills of the timber frame. Silvers paler above wear 0.3."},"ballast":{"type":"color","default":"#af8361","label":"Ballast","describe":"Albedo of the ballast bed: its crest, faceted shoulders and the z = 0 joint section. Dirties above wear 0.3."},"slab":{"type":"color","default":"#dfddd8","label":"Slab","describe":"Albedo of the 0.06 m ground slab under the ballast bed, the 4 x 4 m tile base whose edges butt the next tile. Wear never touches it."},"steel":{"type":"color","default":"#7c766b","label":"Steel","describe":"Albedo of the rail sides and feet, the chairs they sit in, and the buffer plungers and head rims. Browns toward rust above wear 0.3."},"bright":{"type":"color","default":"#ede9e0","label":"Bright steel","describe":"Albedo of the polished running surface on top of each rail and the two buffer faces. Wear never touches it."},"rust":{"type":"color","default":"#896038","label":"Rust","describe":"Albedo of the rust wear brings out face by face on the chairs, base plates, base ties, buffer housings and iron fixing plates; also the colour old frame paint and rail sides brown toward. Invisible at wear 0."},"style":{"type":"choice","default":"bent-rail","label":"Frame style","describe":"What holds the beam up. bent-rail: per side one length of heavy rail standing behind the beam, bent over above it in a round apex and raking down behind at about 55 degrees onto a steel I-beam sole, the two soles tied front and back by base ties into one painted base frame. timber-baulk: per side a squared chamfered timber post behind the beam and a raking timber strut, both on a heavy timber sill, with iron fixing plates. Same beam, buffers, track and footprint either way.","affects":"geometry","options":["bent-rail","timber-baulk"]},"beamLength":{"type":"range","default":2.8,"label":"Beam length","describe":"Length of the buffer beam across the track in metres. The beam's section, band, buffers (fixed 1.75 m apart) and frame stay put; only the overhang past the frame changes: 2.4 is a short beam ending just past the buffer heads, 3.4 a long one reaching out over the ballast shoulders.","affects":"geometry","min":2.4,"max":3.4,"step":0.1},"wear":{"type":"range","default":0.3,"label":"Wear","describe":"0 freshly painted and new, 1 old and weathered: faded paint, dirt, rust and small chips; the object itself never changes.","affects":"geometry","min":0,"max":1,"step":0.1},"scale":{"type":"range","default":1,"label":"Scale","describe":"Scales the whole model; 1 is as built. Real-world size is in this range (real length is 1.8-3 m, as built 4 m).","affects":"geometry","min":0.4,"max":1,"step":0.05}},"presets":{"signal-red":{"beam":"#a14d3d","band":"#f2f2ec","frame":"#903330","timber":"#968d84","ballast":"#af8361","slab":"#dfddd8","steel":"#7c766b","bright":"#ede9e0","rust":"#896038"},"company-green":{"beam":"#a14d3d","band":"#d6c396","frame":"#728738","timber":"#968d84","ballast":"#af8361","slab":"#dfddd8","steel":"#7c766b","bright":"#ede9e0","rust":"#896038"},"yard-black":{"beam":"#2d2925","band":"#f2f2ec","frame":"#3f4140","timber":"#563e26","ballast":"#7c766b","slab":"#dfddd8","steel":"#968d84","bright":"#ede9e0","rust":"#896038"},"limestone":{"beam":"#a14d3d","band":"#f2f2ec","frame":"#903330","timber":"#7c766b","ballast":"#ae9f8a","slab":"#dfddd8","steel":"#3f4140","bright":"#ede9e0","rust":"#896038"},"royal-blue":{"beam":"#385d7c","band":"#d6c396","frame":"#426e8f","timber":"#968d84","ballast":"#af8361","slab":"#dfddd8","steel":"#7c766b","bright":"#ede9e0","rust":"#896038"}},"materials":{"ballast":{"kind":"stone","finish":"rough"},"slab":{"kind":"stone","finish":"concrete"},"timber":{"kind":"wood","finish":"raw"},"steel":{"kind":"metal","finish":"satin"},"bright":{"kind":"metal","finish":"polished"},"beam":{"kind":"paint","finish":"eggshell"},"band":{"kind":"paint","finish":"eggshell"},"frame":{"kind":"paint","finish":"matte"},"rust":{"kind":"metal","finish":"rusted"}},"rev":1792626517,"materials_note":"what each colour zone is made of: `kind` and `finish` name a procedural PBR material in https://polyfork.dev/materials.mjs (dressByAlbedo finds a zone by its albedo in COLOR_0). A zone not listed has not been classified.","preview_v":1792626529,"mod_v":1792626517}