// bimtex example 01 — Louvre Palace, Cour Napoléon and Carrousel
//
// This remains the original glass-pyramid study, but the pyramid now sits in
// the entrance ensemble it was designed for rather than on an empty square.
//
// Published dimensions and structure:
//   https://www.saint-gobain.com/sites/saint-gobain.com/files/laa88_may2019.pdf
//     21.64 m apex over a 35.24 m square base; the main roof below uses those
//     figures exactly (pitch × half-span = height).
//   https://www.louvre.fr/en/explore/the-palace/a-pyramid-for-a-symbol
//     Cour Napoléon, the pyramidions, the underground entrance and the royal
//     axis through Louis XIV's equestrian statue.
//   https://commons.wikimedia.org/wiki/File:Plan_of_the_Cour_Napol%C3%A9on,_Louvre.svg
//     The relative positions of the seven fountain basins, three pyramidions
//     and the surrounding Richelieu / Sully / Denon wings (CC BY-SA 4.0).
//   https://www.louvre.fr/en/explore/the-palace/a-garden-at-the-heart-of-the-louvre
//     The 6.2-hectare Carrousel Garden, sculpture museum, Arc du Carrousel and
//     the westward axis toward the Tuileries.
//   https://api-www.louvre.fr/sites/default/files/2024-06/Web%20-%20EN%20%20LOUVRE_PlanG%20-%2004-2024.pdf
//     Hall Napoléon at level -2 and the three principal visitor branches to
//     Richelieu, Sully and Denon.
//   https://www.louvre.fr/decouvrir/vie-du-musee/les-grands-hommes-de-la-cour-napoleon
//     Repeated façade bays and first-floor statuary: 86 figures, 3.15 m high,
//     aligned with the columns at about 12 m above the court.
//
// DOCUMENTED:
//   Main Pyramid: 35.24 m square × 21.64 m high.
//   Three visible pyramidions north / east / south of the main entrance.
//   Seven triangular water fields around the pedestrian diagonals.
//   Richelieu, Sully and Denon wings enclosing Cour Napoléon; Cour Carrée
//   continues east of Pavillon Sully and the Carrousel axis continues west.
//
// ESTIMATED:
//   Historic-wing depths, pavilion heights, fountain-jet positions and the
//   below-grade entrance geometry are survey-level approximations from the
//   published plan. They establish the real composition without pretending
//   this example is a conservation survey.
{"t":"project","id":"glass-pyramid","name":"Louvre Palace & Grand Louvre","unit":"m","typology":"civic","frontSide":"west","light":"overcast"}
{"t":"parcel","id":"louvre-site","x":-280,"y":-18,"w":680,"d":196,"frontage":"west"}
{"t":"grade","id":"grade","elev":0}

// Courtyard finishes and the pale stone field.
{"t":"materialdef","id":"louvre-plaza","of":"paving","value":86,"body":{"roughness":0.9,"metalness":0}}
{"t":"materialdef","id":"louvre-stone","of":"stone","value":72,"accent":"#b9aa8e"}
{"t":"materialdef","id":"louvre-slate","of":"slate","value":20,"accent":"#4a4d52","body":{"roughness":0.72}}
{"t":"materialdef","id":"louvre-water","of":"glass","value":72,"body":{"type":"MeshPhysicalMaterial","roughness":0.12,"metalness":0,"opacity":0.72,"transmission":0.75,"ior":1.33}}
{"t":"materialdef","id":"louvre-bronze","of":"paint","value":42,"accent":"#5c5a3f","body":{"roughness":0.4,"metalness":0.65}}
{"t":"materialdef","id":"louvre-lawn","of":"paint","value":58,"accent":"#7c8961","body":{"roughness":1,"metalness":0}}
{"t":"materialdef","id":"louvre-gravel","of":"gravel","value":80,"accent":"#c9bea7","body":{"roughness":0.98}}
{"t":"materialdef","id":"louvre-window","of":"glass","value":42,"body":{"type":"MeshPhysicalMaterial","roughness":0.16,"metalness":0,"opacity":0.78,"transmission":0.25,"ior":1.46}}
{"t":"materialdef","id":"louvre-hall-floor","of":"paint","value":58,"accent":"#81796b","body":{"roughness":0.72,"metalness":0}}
// The court is one continuous stone finish with three real notches for the
// differently finished public passages. No coplanar plates are stacked here.
{"t":"paving","id":"cour-napoleon","use":"patio","shape":"polygon","points":[[8,4],[111,4],[111,48],[129,48],[129,4],[252,4],[252,69],[206,69],[206,91],[252,91],[252,156],[52,156],[52,116],[38,116],[38,156],[8,156]],"material":"louvre-plaza"}
{"t":"street","id":"rue-de-rivoli","name":"RUE DE RIVOLI","from":[-280,-11],"to":[400,-11],"width":14,"lanes":2,"class":"collector"}
{"t":"street","id":"quai-francois-mitterrand","name":"QUAI FRANÇOIS MITTERRAND","from":[-280,171],"to":[400,171],"width":14,"lanes":2,"class":"collector"}

// The historic U is deliberately segmented where real public passages cross
// it. These are true gaps in the existing massing, not dark rectangles painted
// onto an unbroken wall: Passage Richelieu enters from Rue de Rivoli, Porte des
// Lions crosses the Denon wing and Pavillon Sully links both palace courts.
{"t":"building","id":"richelieu-west","label":"Richelieu wing · west","x":15,"y":10,"w":96,"d":18,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"richelieu-east","label":"Richelieu wing · east","x":129,"y":10,"w":93,"d":18,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"denon-west","label":"Denon wing · Porte des Lions","x":15,"y":132,"w":23,"d":18,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"denon-east","label":"Denon wing · east","x":52,"y":132,"w":170,"d":18,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"sully-north","label":"Pavillon Sully · north","x":222,"y":28,"w":23,"d":41,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"sully-south","label":"Pavillon Sully · south","x":222,"y":91,"w":23,"d":41,"storeys":4,"height":25,"existing":true,"material":"louvre-stone"}

// The long wings are not one flat datum in the reference: corner pavilions and
// gate shoulders repeatedly break the skyline. These overlapping existing
// masses are deliberately coarse at site-cover scale, but they make that
// cadence part of the compiler output instead of leaving it only in the 3D
// appearance assets below.
{"t":"asset","id":"pavilion-richelieu-west","class":"palace-pavilion","x":15,"y":7,"w":18,"d":24,"z0":0,"z1":34,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-richelieu-gate-west","class":"palace-pavilion","x":101,"y":7,"w":10,"d":24,"z0":0,"z1":31,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-richelieu-gate-east","class":"palace-pavilion","x":129,"y":7,"w":10,"d":24,"z0":0,"z1":31,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-richelieu-sully","class":"palace-pavilion","x":204,"y":7,"w":18,"d":24,"z0":0,"z1":34,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-denon-west","class":"palace-pavilion","x":15,"y":129,"w":18,"d":24,"z0":0,"z1":34,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-denon-gate-west","class":"palace-pavilion","x":28,"y":129,"w":10,"d":24,"z0":0,"z1":31,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-denon-gate-east","class":"palace-pavilion","x":52,"y":129,"w":10,"d":24,"z0":0,"z1":31,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-denon-sully","class":"palace-pavilion","x":204,"y":129,"w":18,"d":24,"z0":0,"z1":34,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-sully-north","class":"palace-pavilion","x":219,"y":50,"w":29,"d":19,"z0":0,"z1":35,"material":"louvre-stone"}
{"t":"asset","id":"pavilion-sully-south","class":"palace-pavilion","x":219,"y":91,"w":29,"d":19,"z0":0,"z1":35,"material":"louvre-stone"}

// Gate pavilions retain the skyline while leaving the ground plane genuinely
// traversable. NS gates open north-south; EW gates open between the two courts.
{"t":"asset","id":"passage-richelieu","class":"louvre-gate-ns","x":111,"y":8,"w":18,"d":22,"z0":0,"z1":36}
{"t":"asset","id":"porte-des-lions","class":"louvre-gate-ns","x":38,"y":130,"w":14,"d":22,"z0":0,"z1":31}
{"t":"asset","id":"passage-sully","class":"louvre-gate-ew","x":220,"y":69,"w":27,"d":22,"z0":0,"z1":38}
{"t":"lookdef","id":"louvre-gate-ns","for":"asset:louvre-gate-ns","body":{"type":"Group","children":[{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[0.18,0.72,1,2,0.025]},"material":"louvre-stone","position":[-0.41,0.36,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[0.18,0.72,1,2,0.025]},"material":"louvre-stone","position":[0.41,0.36,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[1,0.28,1,2,0.025]},"material":"louvre-stone","position":[0,0.86,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[0.58,0.08,1.04,2,0.02]},"material":"louvre-slate","position":[0,1.04,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[0.12,0.1,0.18,2,0.02]},"material":"louvre-stone","position":[0,1.14,0]}]}}
{"t":"lookdef","id":"louvre-gate-ew","for":"asset:louvre-gate-ew","body":{"type":"Group","children":[{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[1,0.72,0.18,2,0.025]},"material":"louvre-stone","position":[0,0.36,-0.41]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[1,0.72,0.18,2,0.025]},"material":"louvre-stone","position":[0,0.36,0.41]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[1,0.28,1,2,0.025]},"material":"louvre-stone","position":[0,0.86,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[1.04,0.08,0.58,2,0.02]},"material":"louvre-slate","position":[0,1.04,0]},{"type":"Mesh","geometry":{"type":"RoundedBoxGeometry","args":[0.18,0.1,0.12,2,0.02]},"material":"louvre-stone","position":[0,1.14,0]}]}}
{"t":"paving","id":"walk-passage-richelieu","use":"walkway","x":111,"y":4,"w":18,"d":44,"material":"louvre-gravel"}
{"t":"paving","id":"walk-porte-des-lions","use":"walkway","x":38,"y":116,"w":14,"d":40,"material":"louvre-gravel"}
{"t":"paving","id":"walk-passage-sully","use":"walkway","x":206,"y":69,"w":46,"d":22,"material":"louvre-gravel"}

// Cour Carrée completes the east half of the palace. The existing Sully bar
// is its west side; three more historic wings close the square courtyard.
{"t":"building","id":"cour-carree-north","label":"Cour Carrée · north wing","x":222,"y":10,"w":168,"d":22,"storeys":4,"height":26,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"cour-carree-south","label":"Cour Carrée · south wing","x":222,"y":128,"w":168,"d":22,"storeys":4,"height":26,"existing":true,"material":"louvre-stone"}
{"t":"building","id":"cour-carree-colonnade","label":"Louvre Colonnade · east wing","x":366,"y":32,"w":24,"d":96,"storeys":4,"height":28,"existing":true,"material":"louvre-stone"}
{"t":"paving","id":"cour-carree","use":"patio","x":252,"y":32,"w":114,"d":96,"material":"louvre-gravel"}
{"t":"asset","id":"cour-carree-fountain","class":"louvre-court-fountain","x":302,"y":76,"w":8,"d":8,"z0":0,"z1":1.2}
{"t":"lookdef","id":"louvre-court-fountain","for":"asset:louvre-court-fountain","body":{"type":"Group","children":[{"type":"Mesh","geometry":{"type":"CylinderGeometry","args":[0.5,0.5,0.08,32]},"material":"louvre-stone","position":[0,0.04,0]},{"type":"Mesh","geometry":{"type":"CylinderGeometry","args":[0.44,0.44,0.05,32]},"material":"louvre-water","position":[0,0.09,0]},{"type":"Mesh","geometry":{"type":"CylinderGeometry","args":[0.025,0.04,0.75,10]},"material":"louvre-water","position":[0,0.48,0]}]}}

// East Colonnade rhythm: a restrained row of paired stone columns marks the
// famous Perrault façade without manufacturing every statue and window.
{"t":"asset","id":"east-colonnade","class":"louvre-colonnade-bay","parts":[{"x":388.5,"y":36,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":43,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":50,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":57,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":64,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":71,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":78,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":85,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":92,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":99,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":106,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":113,"w":1.2,"d":1.2,"z0":2,"z1":21},{"x":388.5,"y":120,"w":1.2,"d":1.2,"z0":2,"z1":21}]}
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// Cour Napoléon façades are repeated architectural bays rather than one flat
// massing colour. Each bay carries a rusticated plinth, three window tiers,
// pilasters, string courses, balustrade and one representative 3.15 m figure.
// The official programme contains 86 statues; repetition here preserves its
// structural cadence without claiming survey-level sculpture geometry.
{"t":"asset","id":"cour-facades-x","class":"louvre-cour-facade-x","parts":[{"x":32,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":44,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":56,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":68,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":80,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":92,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":138,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":150,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":162,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":174,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":186,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":198,"y":27,"w":10,"d":1,"z0":0,"z1":24},{"x":18,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":56,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":68,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":80,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":92,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":104,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":116,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":128,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":140,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":152,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":164,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":176,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":188,"y":132,"w":10,"d":1,"z0":0,"z1":24},{"x":200,"y":132,"w":10,"d":1,"z0":0,"z1":24}]}
{"t":"asset","id":"cour-facades-y","class":"louvre-cour-facade-y","parts":[{"x":221,"y":34,"w":1,"d":10,"z0":0,"z1":24},{"x":221,"y":46,"w":1,"d":10,"z0":0,"z1":24},{"x":221,"y":58,"w":1,"d":10,"z0":0,"z1":24},{"x":221,"y":94,"w":1,"d":10,"z0":0,"z1":24},{"x":221,"y":106,"w":1,"d":10,"z0":0,"z1":24},{"x":221,"y":118,"w":1,"d":10,"z0":0,"z1":24}]}
// Cour Carrée uses the same repeated bay grammar on its inner faces. Keeping
// these as appearance assets preserves the site-massing contract while giving
// the rear court the window, pilaster and cornice rhythm visible from above.
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// West of the palace, the 6.2-hectare Carrousel composition carries the royal
// axis toward the Tuileries: gravel walks, clipped lawns, sculpture rows and
// the Arc de Triomphe du Carrousel.
// Gravel and lawn tile the ground instead of occupying the same depth plane.
// The six strict interior holes expose mown landscape below the gravel plate.
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// Main Pyramid: the semantic roof keeps the plan, elevation and 3D in agreement.
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{"t":"level","id":"court","name":"Cour Napoléon","elev":0,"height":0.15}
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// Seven shallow triangular fountain fields copied proportionally from the
// published Cour Napoléon plan. The gaps are the real diagonal walks.
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// The three surface pyramidions illuminate the underground approaches to the
// Richelieu, Sully and Denon wings.
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// Water jets are separate fixtures, not extra pool geometry.
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// The historic skyline: long slate roof bands and the seven principal
// pavilions frame the modern glass entrance without modelling decorative
// sculpture as fake structure.
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// Louis XIV anchors Pei's corrected royal perspective west of the Pyramid.
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// Level -2 is now a legible Hall Napoléon rather than one oversized stair
// envelope. The open central rotunda, lift, four escalator banks and three
// principal branch portals express the official Richelieu / Sully / Denon
// distribution diagram while remaining within the Pyramid's truthful box.
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