startExecution(_:)
Allows you to perform custom setup tasks before the Quartz Composer engine starts rendering.
Declaration
func startExecution(_ context: (any QCPlugInContext)!) -> BoolParameters
- context:
An opaque object , conforming to the Qcplugincontext protocol, that represents the execution context of the
QCPlugInobject. Do not retain this object or use it outside of the scope of this method.
Return Value
false indicates a fatal error occurred and prevents the Quartz Composer engine from starting.
Discussion
The Quartz Composer engine calls this method when your custom patch starts to render. You can optionally override this execution method to perform setup tasks.