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ZincJS (Web-based-Zinc-Visualisation)

Webapp developed using ZincJS:

Braveheart Interactive hert

Medtech Lungs

SPARC MAPcore 2018 Demo

Fitzlet

Installation:

You need NPM to build the ZincJS library. Once NPM has been installed, follow the instructions below:

$ npm install
$ npm run build

If everything works accordingly, a 'build' folder along with two files zinc.js and zinc.min.js in it should be created. The zinc.js and zinc.min.js can now be consumed in your preferred envirnoment.

Useful links:

Examples

Tutorials

API Documentation

How to export models to ZincJS:

Here is a short instruction on how to get simple models from CMGUI/Zinc showing on web brwoser quickly.

For PyZinc users:

PyZinc2ZincJS

For Cmgui users:

  1. Download the latest cmgui from http://physiomeproject.org/software/opencmiss/cmgui/download/developer

  2. Read in your files, set up the graphics and viewing windows.

  3. Export the json files using the following command gfx expore threejs, there are few different options regarding the export, make sure you read the instruction using "gfx export threejs ?" command. Please note down the filename_prefix you have chosen here. The number of files output is determined by the number of surfaces group you have created.

  4. Note down the values of eye point, interest point, upvector, near plane and far plane from the output of the "gfx list win 1" command.

  5. Copy the model/newheart_view.json file available here in the repository and rename it to [filename_prefix]_view.json ; Open the file and edit the values inside.

Example: if I have 3 different group of surfaces output under the prefix "new_models" with the following graphics windows settings:

farPlane: 601.1211762872496
nearPlane: 14.809855917663832
upVector: [0.0, 1.0, 0.0]
interest point: [9.704483032226562, 6.385875701904297, -5.001008987426758] 
eye point: [9.704483032226562, 6.385875701904297, 291.1961093658496]}

I will create and edit the new_models_view.json file and its content will be

{"farPlane": 601.1211762872496, "nearPlane": 14.809855917663832, "upVector": [0.0, 1.0, 0.0], "numberOfResources": 3, "targetPosition": [9.704483032226562, 6.385875701904297, -5.001008987426758], "timeEnabled": [1, 1, 1], "morphColour" : [0, 0, 0], "eyePosition": [9.704483032226562, 6.385875701904297, 291.1961093658496]}

Note that:

[timeEnabled] values in this case indicates that time varying vertices have been output for all 3 group of surfaces.
[morphColour] values in this case indicates that time varying spectrum colours have not been output for all 3 group of surfaces.
[numberOfResources] indicates the number of files output from cmgui.

Make sure all the json files are located in the same folder and now we should have all files required and we are ready to view them.

*please not that only surfaces are supported at this moment.

Using the sample page:

I have included a simple html page - multiscenes_example.html which will display simple models. You can also view the following page to see mroe WebGL based Zinc in action: http://sites.bioeng.auckland.ac.nz/webgl_zinc_collections/

Use of ThreeJS:

This library wraps the ThreeJS library and provides a more Zinc-like experience to users. I have modified the ThreeJS backend slightly to fit my usage here, you can find the github repository of my ThreeJS fork here: https://github.com/alan-wu/three.js

Basic controls:

  • Left click/single finger touch move: Rotate
  • Middle click/three finger touch move: Translate
  • Right click/two finger pinch: Zoom