A3DCallbackProgressStart

type A3DCallbackProgressStart

A callback function the library invokes as it prepares to perform a potentially time-consuming process.

The argument identifies the processing phase, as follows:

Processing phase | Description

• 0 | Undefined.

• 1 | Parsing the file

• 2 | Writing file

• 3 | Reading or building the model, which follows parsing the file (processing phase 1)

  2.0