{"params":{"colorway":{"type":"choice","default":"chemical-blue","label":"Colorway","describe":"Curated kit-coherent scheme; sets shell, head and bung caps together. chemical-blue is the approved blue drum with a dark grey head; kerosene-red is a fuel drum with a near-black head; coolant-green a workshop drum; food-cream a pale food-grade drum with a slate blue head.","options":["chemical-blue","kerosene-red","coolant-green","food-cream"]},"body":{"type":"color","default":"#8FB4C9","label":"Body","describe":"Albedo of the whole moulded plastic shell \u2014 wall, every hoop rib, the flared foot ring and the rolled top rim with its flat annulus. This is the drum's dominant colour. Overrides the colorway."},"lid":{"type":"color","default":"#4E5459","label":"Head","describe":"Albedo of the sealed head disc sunk inside the top rim and of the recess wall around it. Keep it several values DARKER than Body or the top stops reading as a dark well. Overrides the colorway."},"bung":{"type":"color","default":"#1B1D20","label":"Bung caps","describe":"Albedo of both screw-cap bungs on the head (collar and plug together). Keep it well below Head \u2014 the caps sit in the rim's shade, so a small tone difference disappears at hero distance. Overrides the colorway."},"tallness":{"type":"range","default":0.9,"label":"Tallness","describe":"Overall height in metres from the ground to the top rim; the 0.60 m diameter never changes. The drum is REBUILT, not stretched: foot ring, rim, head and rib sections keep their exact metric size and the hoop ribs repeat at a constant 0.244 m pitch and the run stays centred on the drum's mid-height, so it gains a rib as the wall lengthens \u2014 1 rib below 0.79 m, 2 from 0.79 m (the approved drum at 0.90 m), 3 from 1.04 m. 0.70 is a squat 120-litre drum, 1.12 a tall 250-litre one; triangle count moves with the rib count.","affects":"geometry","min":0.7,"max":1.12},"facets":{"type":"range","default":14,"label":"Facets","describe":"Number of flat vertical faces around the drum, the roundness of the turned form. 14 is the approved look \u2014 round enough to read as a moulded plastic barrel rather than a faceted metal one; 8 is a hard octagonal barrel whose corners read from any angle. Ribs, rim and foot share the same facet grid at every value.","affects":"geometry","min":8,"max":15,"step":1},"taper":{"type":"range","default":0,"label":"Taper","describe":"How much the wall narrows from foot to rim, as a fraction of the wall radius. 0 gives the approved plumb-sided drum; 0.26 gives an unmistakably conical stacking drum, roughly 0.46 m across the rim against 0.60 m at the foot. Rib crests, rim, foot ring and the bung positions are all re-derived from the tapered wall, so they hug it at every value.","affects":"geometry","min":0,"max":0.26}},"presets":{"chemical-blue":{"body":"#8FB4C9","lid":"#4E5459","bung":"#1B1D20"},"kerosene-red":{"body":"#B5462F","lid":"#4E5459","bung":"#1B1D20"},"coolant-green":{"body":"#3F8A5E","lid":"#4E5459","bung":"#1B1D20"},"food-cream":{"body":"#F0EFEC","lid":"#5B6E8C","bung":"#2E3134"}},"rev":1792408798,"materials":{"body":{"kind":"plastic","finish":"satin"},"lid":{"kind":"plastic","finish":"satin"},"bung":{"kind":"plastic","finish":"satin"}},"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":1792463128,"mod_v":1792408798}