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.obj Modeling File Reader For Macbrownaustin

OBJ files are used by Wavefront's Advanced Visualizer application to define and store the geometric objects. Backward and forward transmission of geometric data is made possible through OBJ files. Both polygonal geometry like points, lines, texture vertices, faces and free-form geometry (curves and surfaces) are supported by OBJ format. It deals with files in OBJ format, which typically describe a 3D model built with various CAD software, such as 3ds Max, SketchUp or DAZ Studio. The program was designed to cover small to medium.

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  2. .obj Modeling File Reader For Mac Brown Austin Peay

WARNING: THIS REPO IS NO LONGER MAINTANING, MAYBE NOT SUPPORT NEWERST CESIUM.

File

Node command line tool and module convert obj model file to 3D Tiles, based on obj2gltf.

NOTE: Only support .b3dm and .i3dm for now!

Please use Cesium after v1.37, cause this 3d tile use glTF2.0.

Getting Start

Make sure you have Node installed, and then

Isd

Basic Usage

  • Convert .obj to .gltf
  • Convert .obj to .glb

NOTE: More detial to convert .gltf and .glb can find at obj2gltf.

NOTE: If your model have tarnsparency texture please add --checkTransparency parameter.

NOTE: If your model using blinn-phong material, and use occlusion when convert to PBR material, the model will looks darker.The useOcclusion default is false, remember adding --useOcclusion if your model using PBR material. Here are some showcase about it.

  • Convert .obj to .b3dm with default BatchTable, which have batchId and name property, and name is model’s name.
  • Convert .obj to .b3dm with default BatchTable and export default BatchTable (a JSON file). Maybe get information for custom BatchTable.
  • Convert .obj to .b3dm with custom BatchTable.
  • Convert .obj to .i3dm width FeatureTable.
  • Convert .obj to .i3dm with FeatureTable and BatchTable.

FeatureTable support following parameters : position, orientation, scale.

Create Tileset

  • Create a single tileset with .b3dm tile.
  • Create a single tileset with .b3dm tile and custom tileset options, custom BatchTable.
  • Create a single tileset with .i3dm tile.
  • Create a single tileset with .i3dm tile and custom tileset options, custom BatchTable.

The customTilesetOptions.json can have options bellow, and these are fake values, please only add properties you need, other value will be auto calculate through .obj file.

NOTE: If you are not specify the transHeight option, your model will be place at earth ground surface, which means no matter what the height your models are,the lowerest point of your models will be place at height = 0.0 on the earth. But if you want keep origin heigth you just need specify transHeight = 0.0.

Here are different bounding volumes.

Combine tilesets

You can combine tilesets into one tileset.json as external tileset.

Using as node module

If you want to use this tool in node or debug, check out how to use as node module.

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Test

Navigate to this project folder and run

Troubleshooting

First, make sure your .obj file is complete, normally include .obj, .mtl and textures like .jpg or .png.You can preview your .obj model via “Mixed Reality Viewer” if you are in windows 10.Otherwise you can use this online viewer.
Second, export .glb and check if it display correctly. You can useCesium or Three.js gltf viewer.
In the end, just export .b3dm or tileset and load in Cesium.

Sample Data

Sample data under the .binbarrel folder.

Resources

  • Online glTF viewer, make sure your glTF is correct. Cesium, Three.js.

Credits

Great thanks to Sean Lilley(@lilleyse) for helping and advising.

Thanks AnalyticalGraphicsInc provide a lot of open source project (like Cesium and 3D Tiles) and creat a great GIS environment.

License

.obj Modeling File Reader For Macbrownaustin

G.Viewer - Online 3D Model Viewer

G.Viewer is an Online 3D Model Viewer developed by MASC, which supports both OBJ and OFF format. It's also a 2D polygon viewer which support POLY format. See demos here.

Try G.Viewer

Drag & Drop your model file on the canvas

Supported Format

2d: POLY
3d: OBJ, OFF, JSON (triangular mesh only)

Usage

drop file onto canvas to load model
drag model to rotate
mouse wheel or '[' ']' key to zoom in/out
'w' to toggle wireframe mode
arrows keys to move the model
'c' change to random colors
space to toggle rotation

Wiki Syntax

{{objviewer url='http://masc.cs.gmu.edu/wiki/uploads/ObjViewer/beethoven.obj' width='480' height='320' dropable='true'}}

.obj Modeling File Reader For Mac Brown Austin Peay

{{objviewer url='http://masc.cs.gmu.edu/wiki/uploads/ObjViewer/303.off' width='480' height='320' dropable='true'}}
{{objviewer url='http://masc.cs.gmu.edu/wiki/uploads/ObjViewer/neuron.poly' width='600' height='480' dropable='true'}}
Notice: an absolute url is preferred here, or using '/wiki/uploads/...'
if dropable is set to true, you can drop any local obj file onto canvas