/*

	This example demonstrates how to connect a runtime custom operator to an object.

*/

NewScene( null, false );

var null1 = GetPrim( "null" );

var null2 = GetPrim( "null" );

// Create a runtime scripted operator and turn on debugging (logs extra information)

var sop = XSIFactory.CreateScriptedOp( "myexpr", myexpr_Update.toString(), "JScript" );

sop.Debug = 1;

// Add a portgroup to read from/write to

var group1 = sop.AddPortGroup( "MainGroup" )

// We use an IO port because we want to blend the existing

// transformation rather than completely replacing it

sop.AddIOPort( null1.Kinematics.Local, "", group1.Index );

// Add a second group with an optional port

var group2 = sop.AddPortGroup( "SecondGroup", 0, 1 )

sop.AddInputPort( null2.Kinematics.Local, "inputs", -1, group2.Index );

// Connect first group.  Operator would start functioning immediately

sop.ConnectToGroup( group1.Index, null1.Kinematics.Local );

// Connect to the optional port

sop.ConnectToGroup( 1, null2.Kinematics.Local);

// This has no effect on null1

Translate( null2, 1, -1, 1 );

// This changes null1 rotation as well

Rotate(null2, 90, -45, 0 ) ;

// This operator constrains the rotation of the connected (target) object to the

// rotation of the object connected through the second portgroup.

function myexpr_Update( ctx, out, inlocal1, inlocal2 )

{

	Application.LogMessage( "myexpr_Update: " + out.Name );

	Application.LogMessage( ""+(inlocal2) );

	var transfo = inlocal1.Value.Transform;

	// Is there an object connected to the 2nd group?

	if ( ctx.Operator.GetNumInstancesInGroup( 1 ) )

	{

		var inlocal2 = ctx.Operator.PortAt( 0, 1, 0 );

		// Is the port connected?

		if ( inlocal2.IsConnected )

		{

			var rot = inlocal2.Value.Transform.Rotation;

			transfo.SetRotation	( rot );

		}

	}

	out.Value.Transform = transfo;

}