Easy3DViewer

A web-based 3D viewer based on three.js designed for easy-to-use.

Usage

To use our system, you should first write a config.json to the root of our workspace.

An example of config.json is shown as follows:

{
    "repository_name" : "http://localhost:8000",
    "default_data_folder": "/test_data",
    "data": [
        {
            "source_url": "https://changhaonan.github.io/Easy3DViewer", 
            "source_directory": "/test_data", 
            "name":"test",
            "folder_name": "scarf4Cam", 
            "title": "Test",
            "frames": ["frame_000001"]
        }
    ]
}

There are two different ways of using this software.

Running the Node App locally

The node app (in the master branch) consists of the code that you can use to run and test the software locally on your systems and generate the files needed for static hosting (can be used on github with github-pages).

The steps to run the software locally is as follows:

1. clone the repository
2. npm install
3. python configure.py
4. node app.js

If you get error when running npm install, then run npm init first.

To add in your own 3D visualizations, you need to add a folder with your animation to public/test_data. The folder should contain files that look like this. Once added, you need to change the config.json to add the name of your folder and the frames you want to render.

Now if you run node app.js, you should see your visualizations. You can add multiple of these folders as shown in the example config.json and test_data folder that we have added.

Generating the static files to host

The steps to generate the static index.html file is simple. Now that you have the node app set up from above, make sure that you put in your repository_name in the config.json. Once that is done, on your terminal, when you run node generate.js, you should see a new index.html file ready to be hosted.

We make a copy of this index.html and the public/test_data folder, and switch over to the gh-pages branch. Just replace the exisiting index.html and test_data with the copied (new) ones.

Once this is done, you need to push your code back to github. You do not need to push the externals folder (in the gh-pages branch), as the exisiting code will point to this repository only. If you have github-pages enabled (see this), you should see your page at https://username.github.io/repository_name. This may take a while to compile given the size of your repository.

If you do make changes to the externals folder in the gh-pages branch, in your editor you should search for changhaonan.github.io/Easy3DViewer and replace it with your username.github.io/repository_name

Open-box usage

Locally

First generate visualiazation data into public/test_data (or use our prepared test data) Then run the following commands:

npm install
python configure.py
node app.js

Python interface

cd Easy3DViewer/
pip install -e .

Or

cd Easy3DViewer/
python setup.py install

Issue

• When I remove "source_directory": "/test_data", the file can not be correctly loaded.

KeyBoard ShortCut

• Press 'a' to go to last frame.
• Press 'd' to go to next frame.
• Press 'p' to do screen shot.
• Press 'r' to do screen record.
• Press ' ' to switch the transform control mode.
• Press 'Tab' to download the current meta information.

Example

Annotation

• Run label_pre first, and label world transform first and then label different objects.
• Then copy all *.json into the recon_dir (Where the pcds are saved.)
• Run label_post then. It will output an axis_alignment.txt and an annotation_info.pkl

Todo:

• Add a floor object to make it looks better.