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Add multiroofs extension
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‎extensions/multiroofs/0.1.0/LICENSE‎

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MIT License
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Copyright (c) 2026 MultiRoofs
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎extensions/multiroofs/0.1.0/README.md‎

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# Shed CityJSON Extensions
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A demo Extension where sheds are modelled, with a new semantic surface.

‎extensions/multiroofs/0.1.0/examples/test3.city.json‎

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{
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"type": "CityJSON",
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"version": "2.0",
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"extensions": {
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"multiroofs": {
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"url": "https://cityjson.github.io/extensions/multiroofs/0.1.0/multiroofs.ext.json",
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"version": "0.1.0"
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}
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},
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"CityObjects": {
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"41": {
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"type": "Building",
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"attributes": {
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"+building-function": "Detached",
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"+building-has-elevator": null,
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"+building-heritage-status": null,
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"+building-max-height-allowed": 12.5,
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"+building-monument-status": false,
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"+building-type": "Semi-detached",
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"+building-volume": 532.52655,
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"+building-year-construction": 1920,
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"+colours": {
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"social": 0.6,
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"water": null,
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"green": 0.3,
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"energy": 0.8,
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"densification": null,
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"utilities": 0.5,
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"mobility": 0.7
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},
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"+roof-area": 142.3,
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"+roof-compactness": 0.72,
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"+roof-elevation": 0.0,
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"+roof-good-solar": true,
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"+roof-irradiance": 850.4,
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"+roof-slope": 38.5,
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"+roof-sun-hours": 4.2
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},
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"geometry": [
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{
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"type": "Solid",
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"lod": "2.2",
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"boundaries": [
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[
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[[3, 65, 2, 66, 1, 67, 0]],
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[[68, 66, 2, 69]],
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[[70, 67, 1, 71]],
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[[72, 3, 0, 73]],
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[[73, 0, 67, 70]],
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[[69, 2, 65, 74]],
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[[74, 75, 76]],
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[[75, 74, 65, 3, 72]],
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[[71, 1, 66, 68]],
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[[75, 72, 73, 70, 77, 76]],
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[[68, 77, 70, 71]],
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[[77, 68, 69, 74, 76]]
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]
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],
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"semantics": {
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"surfaces": [
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{
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"type": "GroundSurface"
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},
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{
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"on_footprint_edge": true,
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"type": "WallSurface"
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},
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{
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"on_footprint_edge": false,
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"type": "WallSurface"
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},
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{
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"rf_azimuth": 328.484467,
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"rf_h_roof_50p": 8.292183,
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"rf_h_roof_70p": 9.15872,
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"rf_h_roof_max": 11.077557,
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"rf_h_roof_min": 6.489581,
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"rf_slope": 45.46785,
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"type": "RoofSurface"
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},
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{
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"rf_azimuth": 147.778091,
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"rf_h_roof_50p": 9.779508,
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"rf_h_roof_70p": 10.246067,
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"rf_h_roof_max": 11.077557,
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"rf_h_roof_min": 8.72821,
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"rf_slope": 30.256968,
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"type": "RoofSurface"
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},
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{
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"rf_azimuth": 59.065632,
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"rf_h_roof_50p": 8.016039,
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"rf_h_roof_70p": 8.586391,
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"rf_h_roof_max": 10.364244,
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"rf_h_roof_min": 6.568833,
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"rf_slope": 46.531986,
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"type": "RoofSurface"
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}
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],
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"values": [[0, 1, 1, 1, 1, 1, 2, 1, 1, 3, 4, 5]]
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}
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}
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]
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}
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},
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"vertices": [
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[100945, 79038, 56],
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[105128, 72308, 56],
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[111299, 76083, 56],
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[107126, 82877, 56],
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[94770, 75201, 57],
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[98936, 68437, 57],
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[99211, 68618, 57],
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[100573, 66443, 57],
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[106903, 70371, 57],
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[105543, 72562, 57],
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[105128, 72308, 57],
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[100945, 79038, 57],
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[95074, 74708, 57],
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[103066, 75626, 57],
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[106135, 71608, 57],
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[99364, 68373, 57],
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[100945, 79038, 7286],
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[94770, 75201, 7304],
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[95074, 74708, 7394],
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[95074, 74708, 7891],
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[100573, 66443, 2974],
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[106903, 70371, 2964],
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[103066, 75626, 11357],
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[106135, 71608, 8467],
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[106135, 71608, 3080],
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[105543, 72562, 9112],
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[105128, 72308, 9112],
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[99364, 68373, 7592],
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[99364, 68373, 3154],
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[100463, 68898, 3142],
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[100463, 68898, 8840],
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[99211, 68618, 7595],
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[95476, 74963, 7885],
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[98936, 68437, 7256],
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[100179, 73848, 11351],
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[78300, 96979, 81],
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[79079, 95717, 81],
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[84687, 86623, 81],
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[80285, 83881, 81],
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[80248, 83784, 81],
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[78440, 84222, 81],
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[78463, 84319, 81],
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[73507, 92353, 81],
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[76602, 94277, 81],
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[76105, 95078, 81],
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[75864, 95465, 81],
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[80248, 83784, 10115],
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[80285, 83881, 10112],
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[78440, 84222, 10134],
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[78463, 84319, 10131],
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[84687, 86623, 9965],
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[75864, 95465, 6529],
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[76105, 95078, 6708],
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[73507, 92353, 10007],
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[76602, 94277, 9904],
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[78300, 96979, 6620],
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[76105, 95078, 9892],
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[79079, 95717, 7202],
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[79079, 95717, 9824],
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[77678, 95416, 9856],
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[77678, 95416, 6969],
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[77739, 94935, 9867],
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[77739, 94935, 7136],
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[78614, 95617, 9835],
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[78614, 95617, 7125],
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[107328, 82548, 56],
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[109845, 75194, 56],
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[103069, 75620, 56],
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[109845, 75194, 9055],
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[111299, 76083, 7256],
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[103069, 75620, 11373],
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[105128, 72308, 9098],
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[107126, 82877, 7239],
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[100945, 79038, 7282],
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[107328, 82548, 7344],
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[107328, 82548, 7632],
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[107093, 82394, 7641],
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[105969, 77416, 11357]
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],
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"transform": {
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"scale": [0.001, 0.001, 0.001],
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"translate": [85289.898, 447042.018, -0.435]
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},
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"metadata": {
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"geographicalExtent": [
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85363.405, 447108.461, -0.379, 85401.197, 447138.997, 10.938
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],
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"referenceSystem": "https://www.opengis.net/def/crs/EPSG/0/7415"
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}
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}

‎extensions/multiroofs/0.1.0/extension.toml‎

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[extension]
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name = "multiroofs"
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version = "0.1.0"
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versionCityJSON = "2.0"
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description = "Extension for the MultiRoofs EU project (https://multiroofs.nweurope.eu)"
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authors = ["Hugo Ledoux <https://3d.bk.tudelft.nl/hledoux>"]
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repository = "https://github.com/MultiRoofs/cityjson-extension"
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# doi = ["https://someurl.org"]
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keywords = ["sustainability", "urban"]
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license = "MIT"

‎extensions/multiroofs/0.1.0/multiroofs.ext.json‎

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{
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"type": "CityJSONExtension",
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"name": "multiroofs",
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"uri": "https://cityjson.github.io/extensions/multiroofs/0.1.0/multiroofs.ext.json",
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"version": "0.1.0",
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"versionCityJSON": "2.0",
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"description": "Attributes needed for the MultiRoofs project",
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"extraAttributes": {
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"Building": {
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"+building-function": {
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"type": "string"
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},
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"+building-has-elevator": {
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"type": ["string", "null"],
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"enum": ["yes", "no", null]
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},
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"+building-heritage-status": {
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"type": ["string", "null"]
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},
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"+building-max-height-allowed": {
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"type": ["number", "null"]
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},
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"+building-monument-status": {
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"type": ["boolean", "null"]
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},
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"+building-type": {
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"type": "string",
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"enum": ["Detached", "Semi-detached", "Apartement", "null"]
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},
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"+building-volume": {
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"type": "number"
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},
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"+building-year-construction": {
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"type": "integer"
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},
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"+colours": {
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"type": "object",
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"properties": {
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"social": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"water": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"green": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"energy": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"densification": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"utilities": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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},
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"mobility": {
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"type": ["number", "null"],
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"minimum": 0,
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"maximum": 1
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}
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},
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"required": [
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"social",
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"water",
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"green",
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"energy",
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"densification",
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"utilities",
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"mobility"
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],
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"additionalProperties": false
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},
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"+roof-area": {
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"type": ["number", "null"]
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},
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"+roof-compactness": {
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"type": ["number", "null"]
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},
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"+roof-elevation": {
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"type": ["number", "null"]
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},
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"+roof-good-solar": {
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"type": ["boolean", "null"]
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},
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"+roof-irradiance": {
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"type": ["number", "null"]
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},
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"+roof-slope": {
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"type": ["number", "null"]
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},
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"+roof-sun-hours": {
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"type": ["number", "null"]
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}
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}
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},
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"extraRootProperties": {},
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"extraSemanticSurfaces": {},
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"extraCityObjects": {}
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}

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