要如何在Viewer本地模式下使用加載 AEC Model Data?
近期有在關注 Forge 的朋友應該有注意到 Forge Viewer 終於推出原生的樓層剖切擴展 (Autodesk.AEC.LevelsExtension) 和小地圖擴展 (Autodesk.AEC.Minimap3DExtension) 以下圖：git
在使用這兩個擴展時有個大前提，都須要加載一個叫 AecModelData.json 的文檔，但這個文檔只有在Viewer在線模式下經過 Viewer3D#loadDocumentNode 加載模型，纔可以經過 Document#downloadAecModelData 加載，並經過 BubbleNode#getAecModelData 獲取，因此有許多 Forge 的小夥伴在諮詢有沒有什麼辦法能夠在本地模式下也能獲取 AECModelData 數據？github
所幸，咱們Forge開發技術支持團隊的黃老師提出了一個不錯的解方；在開始說明前，咱們先看完整代碼樣例長什麼樣子：數據庫
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"guid": "060ddb1a-9398-45a3-d2bf-1560f8650e6f",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A105 - Elev__ Stair Sections 958251/dwfx/A105 - Elev__ Stair Sections4.png",
"resolution": [
400,
400
],
"mime": "image/png",
"status": "success"
},
{
"guid": "db90b95d-0265-5fe4-376a-4dd3386c3d7d",
"type": "resource",
"role": "graphics",
"mime": "application/autodesk-f2d",
"status": "success",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/8c15d5f2-9aa1-61e6-77a7-61e08633eb4f_f2d/primaryGraphics.f2d"
},
{
"guid": "eb6a5fb3-d049-4cfb-bf32-1a8a22dc31c8",
"type": "view",
"role": "2d",
"name": "Sheet: A105 - Elev./ Stair Sections",
"viewbox": [
0,
0.023889,
839.999999,
593.976111
]
}
]
},
{
"guid": "e9248f2e-7bb7-4baf-8541-afac7b6872de-000ea29f",
"type": "geometry",
"role": "2d",
"name": "A101 - Site Plan",
"viewableID": "e9248f2e-7bb7-4baf-8541-afac7b6872de-000ea29f",
"phaseNames": "Working Drawings",
"status": "success",
"progress": "complete",
"properties": {
"Print Setting": {
"Layout": "Landscape",
"Paper size": "ISO A4, 210 x 297 mm"
}
},
"hasThumbnail": "true",
"children": [
{
"guid": "ccaa45fd-a10e-aa0a-1bc4-4ce456f6356f",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A101 - Site Plan 959135/dwfx/A101 - Site Plan1.png",
"resolution": [
100,
100
],
"mime": "image/png",
"status": "success"
},
{
"guid": "6e8928d6-0ea0-80d3-e66d-2815cee64d1c",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A101 - Site Plan 959135/dwfx/A101 - Site Plan2.png",
"resolution": [
200,
200
],
"mime": "image/png",
"status": "success"
},
{
"guid": "dfe3c27a-0757-fe54-ed61-984456235f87",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A101 - Site Plan 959135/dwfx/A101 - Site Plan4.png",
"resolution": [
400,
400
],
"mime": "image/png",
"status": "success"
},
{
"guid": "1fd6b2ec-267d-8ba3-6b00-abe1adf80994",
"type": "resource",
"role": "graphics",
"mime": "application/autodesk-f2d",
"status": "success",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/72d0413b-08ca-d1b5-2af2-60a9e588793b_f2d/primaryGraphics.f2d"
},
{
"guid": "8ea7bfa8-847d-455f-87cc-389b43124326",
"type": "view",
"role": "2d",
"name": "Sheet: A101 - Site Plan",
"viewbox": [
0,
0.023889,
839.999999,
593.976111
]
}
]
},
{
"guid": "666da4f5-76ba-443a-9fe6-0bcd8a1bcfe9-000ea416",
"type": "geometry",
"role": "2d",
"name": "A001 - Title Sheet",
"viewableID": "666da4f5-76ba-443a-9fe6-0bcd8a1bcfe9-000ea416",
"status": "success",
"progress": "complete",
"properties": {
"Print Setting": {
"Layout": "Landscape",
"Paper size": "ISO A4, 210 x 297 mm"
}
},
"hasThumbnail": "true",
"children": [
{
"guid": "a9589c82-05f3-6298-dbee-c6157a8d8bb8",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A001 - Title Sheet 959510/dwfx/A001 - Title Sheet1.png",
"resolution": [
100,
100
],
"mime": "image/png",
"status": "success"
},
{
"guid": "e8cdf870-7bc1-5d7c-bf7b-a1cdf1c15381",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A001 - Title Sheet 959510/dwfx/A001 - Title Sheet2.png",
"resolution": [
200,
200
],
"mime": "image/png",
"status": "success"
},
{
"guid": "53bfab17-2fa9-e9f2-c21e-cd466b3eecd9",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/Sheet/A001 - Title Sheet 959510/dwfx/A001 - Title Sheet4.png",
"resolution": [
400,
400
],
"mime": "image/png",
"status": "success"
},
{
"guid": "97e8b569-a295-8750-f788-2d5067608b9c",
"type": "resource",
"role": "graphics",
"mime": "application/autodesk-f2d",
"status": "success",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/9c6e0f4b-edee-0c07-9f8d-fe90a92668fa_f2d/primaryGraphics.f2d"
},
{
"guid": "86896da4-be5c-465e-940b-465a2aeb326d",
"type": "view",
"role": "2d",
"name": "Sheet: A001 - Title Sheet",
"viewbox": [
0,
0.023889,
839.999999,
593.976111
]
}
]
}
]
},
{
"status": "success",
"progress": "complete",
"outputType": "thumbnail",
"children": [
{
"guid": "db899ab5-939f-e250-d79d-2d1637ce4565",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/preview1.png",
"resolution": [
100,
100
],
"mime": "image/png",
"status": "success"
},
{
"guid": "3f6c118d-f551-7bf0-03c9-8548d26c9772",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/preview2.png",
"resolution": [
200,
200
],
"mime": "image/png",
"status": "success"
},
{
"guid": "4e751806-0920-ce32-e9fd-47c3cec21536",
"type": "resource",
"role": "thumbnail",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/preview4.png",
"resolution": [
400,
400
],
"mime": "image/png",
"status": "success"
}
]
}
]
}
Autodesk.Viewing.endpoint.getItemApi= (endpoint, derivativeUrn, api) => {
return 'https://sbhehe.github.io/sb233/house'+decodeURIComponent( derivativeUrn.split('Resource')[1])
};
Autodesk.Viewing.Initializer( { env:'Local' }, () => {
const viewerDocument = new Autodesk.Viewing.Document( manifestJsonObject );
viewerDocument.downloadAecModelData();
const config3d = {
extensions:[
'Autodesk.AEC.LevelsExtension',
'Autodesk.AEC.Minimap3DExtension'
]
};
const viewer = new Autodesk.Viewing.GuiViewer3D( document.body.children[0], config3d);
viewer.start();
viewer.loadDocumentNode(viewerDocument, viewerDocument.getRoot().getDefaultGeometry())
})
首先, 第一步，咱們需先將模型上載到 Forge 服務上進行轉換，等待轉換完成後，獲取轉換的Manifest，並把他存放在某處，像上面代碼樣例的 manifestJsonObject 寫在JavaScript文檔裏面，也能夠把它存放在本身的數據存儲、數據庫什麼的，在須要時經過 AJAX 請求獲取。json
第二步，咱們須要將在線模式的 Viewer代碼作個轉換，從下面這個代碼：api
const options = {
env: 'AutodeskProduction'
//...
};
Autodesk.Viewing.Initializer(options, () => {
Autodesk.Viewing.Document.load( urn, viewerDocument => {
Viewer.loadDocumentNode( viewerDocument, geometry )
}
})
轉換成這個樣子：服務器
const options = {
env: 'Local'
//...
};
Autodesk.Viewing.Initializer(options, () => {
const viewerDocument = new Autodesk.Viewing.Document(manifestJsonObject) //從 Forge Model Derivative GET :urn/manifest 端點獲取 manifest 物件
Viewer.loadDocumentNode( viewerDocument, geometry )
//...
})
第三步，複寫 viewer 的 getItem 方法：網絡
Autodesk.Viewing.endpoint.getItemApi = ( endpoint, derivativeUrn, api ) => {
return '/path/to/model/'+decodeURIComponent( derivativeUrn.split('Resource')[1] ); //decode the URN and extract its path
}
下面給小夥伴們舉個例，app
假設下載的 SVF 包放在網頁服務器的 House文件夾裏，且經過網絡能夠訪問的地址是 https://sbhehe.github.io/sb233/house；那麼，你的 /path/to/model/ 就會是 https://sbhehe.github.io/sb233/houseui
在來，AecModelData.json 文檔在 manifest的描述是：spa
{
"guid": "a4aac952-a3f4-031c-4113-b2d9ac2d0de6",
"type": "resource",
"role": "Autodesk.AEC.ModelData",
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6c2IyMzMzMzMzL3Jldml0aG91c2UucnZ0/output/Resource/AECModelData.json",
"mime": "application/json",
"status": "success"
},
則 derivativeUrn.split('Resource')[1] 的結果會是 /AECModelData.json
因此最後，
你須要確保你的 SVF 包的文件夾結構是相似下面這個樣子：
/ House
|------> AecModelData.json
|------> Model.sdb
|------> /3D View
|------> /{3D} 960621
|------> {3D}.svf
|------> {3D}.png
|------> // 其餘文檔或文件夾……………
|------> // 其餘文檔或文件夾……………
|------> // 其餘文檔或文件夾……………
上面這些注意事項都作完以後，你就能夠在本地模式下獲取 AecModelData 數據，並正常使用 Forge Viewer原生的樓層剖切擴展和小地圖擴展啦~
順祝開發順利！
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