To load a dataset simply follow the prompts provided. The main file, its dimensions, and its datatype are required. Adding a segmentation mask is optional. If one is included it should be in 8 bit format and have the same dimensions as the volume. All of the files should be .raw files. Click the visualize button to launch the data explorer. You should see the volume rendered in the center, a panel with slice view on the upper left, and a panel with controls on the upper right. In the controls there are options for controlling the slices, transfer function, and clipping planes. If a segmentation mask was included, there will be an additional section of the controls that allow you to select which segmentation ID's to render as well as which to selectively clip. You can find 3 demo videos on this repository as well as some sample data. A live version hosted on GitHub pages can be found here.
This is still a prototype, however, it should work smoothly on modern versions of Firefox and Chrome. For questions and support contact znicolaiscanio@college.harvard.edu
index.html - the html code for the main page of VelRen
/colormaps - a folder containing the default transfer function options. They are .png files 1px by 180px with alpha channel set to 1.
/fonts - a folder with fonts for all of the icons used
/css/component.css - the main css file for VolRen
/css/normalize.css - standard normalizer so different browsers behave the same way
/css/popper.css - style for the info tooltip
/css/nano.min.css - style for the color picking tool
/shaders - a folder with the source code for all of the shaders. Those with "box" in the name are for the slices view and those with "vol" are for the volume renderer. Those with "seg" in the name are used when a segmentation mask is included. Those with "int" in the name are used when the datatype is 16 bit.
/js/dat.gui.js - the library for the control panel
js/file.js - the code for the file loading functionality and interface
/js/FileSaver.js - a library for file saving used for the screen shot feature
/js/gl-matrix-min.js - a library for linear algebra in JavaScript
/js/helpers.js - a collection of helper and utility functions
/js/main.js - the main script of VolRen
/js/overlay.js - the code for the transfer function editor overlay
/js/pickr.min.js - the library for the color picking tool
/js/popper.min.js - one of the libraries for the info tooltip
/js/seedrandom.min.js - a library to make Math.random have a settable seed
/js/slices.js - the code for the slice viewer
/js/tooltip.min.js - the other library for the info tooltip
/js/two.min.js - the graphics library used in the transfer function editor
/js/volume-raycaster.js - the code for the volume renderer
/js/webgl-util.js - a library of utility functions for WebGL