====== API Overview ======
The SpeedTree Engine API is contained completely in the relatively compact **speedtree_engine.h** header file which has no external dependencies. That is, it includes no other header files.

The library API is written in C and since C does not support namespaces, all data types and functions are prefixed with **“Ste” (STE for __S__peed__T__ree __E__ngine)**.

The API functions are declared at the end of the header file and are organized into a few different groups:

  * Startup functions for licensing, creating new objects, and setting up a message port from the library to the host application.
   
  * Functions for loading and computing [[input|SPM, STE, and STMAT files]].
   
  * Functions for querying geometry, animating wind and growth, and providing other details about the loaded tree model.