ImGui and gl3w Update

• updated ImGui library
• updated gl3w bindings
• fixed wrong version tag in generated shared library

Empty Space Skipping, Normalized Data Intervals, Bugfixes

• implemented empty space skipping for line-of-sight integration, maximum-intensity projection and transfer function mode
• changed handling of transfer function interval which is now applied on the normalized interval between configurable data min and max limits
• updated imgui library
• several bugfixes: makefile default and all target, missing volume data types

Shared Library, Performance Optimization and Bugfixes

• added c-interface wrapper for utizing render functionality in external programs
• new concept for handling data intervals: min/ max filtering, normalized transfer-function, auto-adjustment of histogram
• performance optimization: parallelized computation of histogram, empty space skipping in ray marching
• reorganized makefile: default and all target, new target for shared library
• output of discretized transfer function as csv
• several bugfixes : memory leak when loading new timesteps, wrong blending with background color, wrong version request in window creation and more

Save configuration

• New feature: save the current configuration to a json file via the gui

Refactoring and Batch Rendering

• completely refactored the whole project (introduced classes for texture, geometry, volume data and other ressources; made use of modern C++ memory management features)
• implemented initial configuration of the renderer via json configuration file passed as command line argument (see --help and example/configExample.json)
• implemented batch render mode (render to TIFF file)

Screenshot Functionality

New features:

• screenshot functionality with viewport independet resolution
• panning as new camera movement and reset functionality
• possibility of only loading a spatial subset of the volume data

v1.0.0

Implemented initially planned functionality.

new features:

• transfer function mode with graphical editor
• ambient occlussion

basic

Implemented:

• Loading of JSON+raw datasets
• line-of-sight integration
• maximum-intensity-projection
• histograms