OSPRay Generalized "Tubes" Geometry Module
What are tubes?
"Tubes" are basically a wide generalization of ospray's "StreamLines" geometry type. Whereas ospray's original stream lines only support a fixed radius for all control points, "tubes" allow a per-node radius, bifurcations and correct transparency.
Compile with OSPRay
Clone the repo into module folder inside OSPRay. Change "OSPRAY_MODULE_TUBES" to "ON". Re-compile.
Data Structure
In this module, the name of geometry is "tubes" and we need commit a "nodeData" and a "linkData" to OSPRay. Users can also commit "colorData" to have color per node. "nodeData" and "linkData" are both vector contains a list of node and a list of line. The basic node struct contains: position, radius. The basic line struct contains: current node index, its predecessor index.
All struct you can find in 'Neuron.h' under ospray/geometry folder.