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Added new isosurface raycaster with adaptive step size control.
The folder also contains some evaluation CSV files with timings and image quality measure. Two Python files are provided for analysis and visualization.
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‎.gitignore‎

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.vs/
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bin/
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bin/
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data/eval*

‎AddingNewVolumeRenderer.md‎

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## Adding a new volume renderer
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All volume rendering algorithms are found in `cppvolrend/structured`. Assume we want to create a new renderer, which visualizes isosurfaces. We call it a *ray-casting 1-pass isosurface renderer*, or short `rc1piso`. These steps need to be taken to add it:
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* Create a new subfolder `cppvolrend/rc1piso` and add some files:
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* * Add the C++ files named `rc1pisorenderer.cpp` and `rc1pisorenderer.h`. Their content could come from one of the other algorithms, or be based on `volrendernull.cpp/h`.
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* * Add a compute shader called `ray_marching_1p_iso.comp`.
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* Edit `structured/CMakeLists.txt` to add the new C++ files in the call to `add_executable()`. Follow the structure of the existing text there.
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* Run CMake. The files should now be part of your buildsystem and appear in your IDE.
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* Include the new renderer in the list of renderers available to the program by adding a few lines in `structured/main.cpp`:
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```c++
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// near the beginning of main.cpp ...
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#include "structured/rc1piso/rc1pisorenderer.h"
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// ... and in the main function
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int main (int argc, char **argv)
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{
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RenderingManager::Instance()->AddVolumeRenderer(new RayCasting1PassIso());
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}
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```
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You can now compile and test your new renderer.
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‎cppvolrend/CMakeLists.txt‎

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# GPU Image Order Ray Casting
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structured/rc1pass/rc1prenderer.cpp structured/rc1pass/rc1prenderer.h
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# GPU Image Order Iso Ray Casting with adaptive step size
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structured/rc1pisoadapt/rc1pisoadaptrenderer.cpp structured/rc1pisoadapt/rc1pisoadaptrenderer.h
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# Directional Ambient Occlusion and Cone Shadows Ground Truth
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structured/rc1pcrtgt/crtgtrenderer.cpp structured/rc1pcrtgt/crtgtrenderer.h
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‎cppvolrend/main.cpp‎

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#include "volrendernull.h"
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// 1-pass - Ray Casting - GLSL
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#include "structured/rc1pass/rc1prenderer.h"
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#include "structured/rc1pisoadapt/rc1pisoadaptrenderer.h"
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#include "structured/rc1pcrtgt/crtgtrenderer.h"
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#include "structured/rc1pdosct/dosrcrenderer.h"
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#include "structured/rc1pextbsd/ebsrenderer.h"
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//-----------------------------------------------------------------------------------------------------------------------------------------------------------------
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// 1-pass - Ray Casting - GLSL
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RenderingManager::Instance()->AddVolumeRenderer(new RayCasting1Pass());
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RenderingManager::Instance()->AddVolumeRenderer(new RayCasting1PassIsoAdapt());
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RenderingManager::Instance()->AddVolumeRenderer(new RC1PConeLightGroundTruthSteps());
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RenderingManager::Instance()->AddVolumeRenderer(new RC1PConeTracingDirOcclusionShading());
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RenderingManager::Instance()->AddVolumeRenderer(new RC1PExtinctionBasedShading());

‎cppvolrend/structured/rc1pisoadapt/evaluation/EvalSSIM_aneurism.csv‎

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StepSizeSmall,StepSizeLarge,StepSizeRange,TimePerFrame (ms),FramesPerSecond,ImageFile,SSIM
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