问题描述
我正在测试 Model Derivative API 以将我的 Navisworks 文件之一转换为 SVF，然后使用 Forge AR|VR Toolkit 在 Unity 中加载模型。我之前尝试过 Navisworks 中的一些 sample models，它们正确加载到 Unity。
当我尝试加载我自己的 Navisworks 文件时，它只加载了一些组件，而不会在统一控制台中抛出任何消息，只是“加载于：115.9605317”之一：
在 Forge Viewer 中，将模型转换为 SVF 后，它看起来像这样：
我的清单出现以下错误：
{
"urn": "dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q","derivatives": [
{
"hasThumbnail": "true","children": [
{
"guid": "8181cbda-7e23-4809-a45a-08d2499ce6a7","type": "geometry","role": "3d","name": "Taif-STP-30-CDM-31001.nwc","status": "success","hasThumbnail": "true","progress": "complete","messages": [
{
"type": "warning","code": "Navisworks-MissingXref","message": [
"Missing external reference file: {0}","C:\\Users\\arq5\\Documents\\00-RVT-RECURSOS\\05-TEXTURASJPG\\HORMIGON\\hormigon ocre.jpg"
]
}
],"viewableID": "cache","useAsDefault": true,"children": [
{
"guid": "49aef14e-066f-4cfc-b5ac-9c325b4d90b6","type": "view","name": "Default","camera": [
2217718.25,7836792,4384.18896484375,2217845,4325.51806640625,0.42008858919143677,-7.63888952093339e-13,0.9074831008911133,3.273224115371704,1.5807563066482544,1,0
],"children": [
{
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q/output/0/0_100.png","role": "thumbnail","mime": "image/png","guid": "f6fa8a98-f6bc-4efd-a2a0-f3e3400f0cba","type": "resource","resolution": [
100,100
]
},{
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q/output/0/0_200.png","guid": "128b27ba-07e8-4696-abbf-518500d081c8","resolution": [
200,200
]
},{
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q/output/0/0_400.png","guid": "a47779a5-a149-4d27-b80e-84dd78bf28cb","resolution": [
400,400
]
}
]
},{
"guid": "64bc3028-731c-4ea1-9775-7a1e1a89ec82","type": "folder","name": "3D View","role": "viewable","hasThumbnail": "false","progress": "0% complete","children": [
{
"guid": "1f08519e-1628-4839-af45-93b200032b26","name": "{3D}","camera": [
2217922,7836688.5,4324.17578125,2217995,7836701.5,4376.45751953125,-0.5683003664016724,-0.10182362794876099,0.8164966106414795,45,224.16700744628906,1
],"status": "success"
},{
"guid": "3e259277-489f-4e98-8ed8-3b3e0a49fd75","name": "Analytical","camera": [
2218373.25,7836174,4628.72900390625,2218286.25,7836905.5,4197.9208984375,-0.05953280255198479,0.5012193918228149,0.8632699251174927,1036.07373046875,{
"guid": "ef039511-0489-446e-8c06-78bcc5ea0ab2","name": "{3D - carmen.gg2}","camera": [
2217942,7836805.5,4334.80078125,2217918.5,7836822,4309.9580078125,-0.5310993790626526,0.37772226333618164,0.7584585547447205,486.9418640136719,{
"guid": "3e93f0b5-97db-430e-9189-a120e8e402c3","name": "{3D - carmen.gg2} copy 1","camera": [
2218071.75,7836715.5,4252.97412109375,2218091.5,7836931.5,4262.3193359375,-0.004109169356524944,-0.04292852059006691,0.9990696907043457,567.1892700195312,{
"guid": "5fa9f6b6-0847-44b6-b6d9-595c1e772d89","name": "{3D - ricardo.navas}","camera": [
2217873.75,7837036,4360.271484375,2217985.25,7836975,4267.619140625,0.5160266160964966,-0.2839450240135193,0.8081409335136414,835.2225952148438,{
"guid": "3f044262-ed05-4336-903b-43df445f204f","name": "{3D - carmen.gg2} copy 1 copy 1","camera": [
2218292.75,4375.10009765625,2218032.75,7836986.5,4314.8154296875,-0.1535138338804245,0.10686176270246506,0.9823513031005859,876.185791015625,{
"guid": "8dc04e9c-6994-48d5-be18-5efe1c48c675","name": "{3D - jorge.mansoGPHPF}","camera": [
2218281,7836987.5,4511.279296875,2218000.25,7836937,4309.6044921875,713.5865478515625,"status": "success"
}
]
},{
"guid": "7c3a22f2-fe30-4bf9-84ef-86fe9b2f9544","name": "Vista","camera": [
2218147,7836836.5,4338.59912109375,2218120.75,7836927.5,4315.5693359375,-0.06565795093774796,0.22708940505981445,0.9716581106185913,2.7923386096954346,0.785398006439209,"status": "success"
},{
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q/output/0/0.svf","role": "graphics","mime": "application/autodesk-svf","guid": "9b21a9ef-8aef-4c8a-821d-e5c614446cae","type": "resource"
}
]
},{
"urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6aW1tZXJzaWFfdGVzdHMvVEFjri1TVFAtMzAtQ0RNLTMxMDAxX1RpbWVsaW5lci5ud2Q/output/0/properties.db","role": "Autodesk.Cloudplatform.PropertyDatabase","mime": "application/autodesk-db","guid": "8e4c0271-e625-4b69-8662-562f34b79158","status": "success"
}
],"name": "Taif-STP-30-CDM-31001_Timeliner.nwd","outputType": "svf","status": "success"
},{
"status": "success","outputType": "arkit","children": [
{
"view_id": "8181cbda-7e23-4809-a45a-08d2499ce6a7","startTime": "2021-04-09T09:43:43.372Z","endTime": "2021-04-09T10:40:55.076Z","name": "navisworks"
},{
"view_id": "8181cbda-7e23-4809-a45a-08d2499ce6a7","startTime": "2021-04-13T07:14:05.130Z","endTime": "2021-04-13T08:11:55.941Z","name": "taif"
}
]
}
],"type": "manifest","region": "US","version": "1.0","status": "success"
}
可能是什么原因造成的？也许缺少纹理？清单的“3d 视图”节点中的“0% 完成”？
操作编辑：
刚刚发现了一件有趣的事情。大多数网格都以随机坐标加载。只有最后 2 个项目在 0,0 坐标（第一张图片）。此外，这 2 个项目的比例不正确。
将模型移近 Navisworks 文件中的原点后：
解决方法
我相信我过去曾看到过类似的问题，即进入 Unity 的几何体与原点相距甚远，以至于根本没有出现。你可以试试：
- 更新原始 Navisworks 文件以将模型移近原点，或
- 修改加载到 Unity 的所有几何图形的位置，使它们更靠近原点