/*

	This example illustrates how to use the XSIFactory to create a multi-output operator 

	which constrains the posx position of a number of objects to a single object. 

*/

NewScene( null, false );

var null1 = GetPrim( "Null" );

var null2 = GetPrim( "Null" );

var polymsh1 = CreatePrim( "sphere", "MeshSurface" );

var op = XSIFactory.CreateScriptedOp( "myCns", myCns_Update.toString(), "JScript" );

// Allow a maximum of 2 nulls to be connected to the main group

var group1 = op.AddPortGroup( "mainoutputgroup", 1, 2, siNullFilter );

// You only need to add 1 port to control 2 objects since the portgroup definition takes 

// care of that. The only thing you need to do here is to define what type of object/parameter 

// you would like to be connected to.

op.AddOutputPort( null1.posx, "", group1.Index );

// Define the second input group that will accept only 1 polygon mesh as input

var group2 = op.AddPortGroup( "inputgroup", 1, 1, siPolyMeshFilter );

op.AddInputPort( polymsh1.posx, "", group2.Index );

// Create a connection string. Use the semi-colon to delimit where the first group ends and 

// the second port group begins.

var cnxstr = null1 + "," + null2 + ";" + polymsh1;

// connect operator

op.Connect( cnxstr );

function myCns_Update( ctx, out, inposx )

{

	out.Value = inposx.Value;

}

// The following code illustrates how to create a scripted operator

// entirely from the COM API

NewScene( null, false );

var oObject = ActiveSceneRoot.AddGeometry("Sphere","MeshSurface");

apply_splatter( oObject );

var oSplatterOperator = oObject.ActivePrimitive.ConstructionHistory.Find( "MySplatter" );

var oPort = oSplatterOperator.Port( "InGeom", "MainGroup", 0 );

var oInputGeometry = oPort.Target2;

Application.LogMessage( "splatter is reading from the " + oInputGeometry.Parent.Name );

function apply_splatter( oObject )

{

	var op = XSIFactory.CreateScriptedOp( "MySplatter", MySplatter_Update.toString(), "JScript" );

	// Define connections

	var group = op.AddPortGroup( "MainGroup" );

	var ioport = op.AddIOPort( oObject.ActivePrimitive, "Geom", group.Index );

	var inport = op.AddInputPort( oObject.kinematics.global.posy, "InGPosY", group.Index );

	// Define parameters

	var pdef = XSIFactory.CreateParamDef2( "SquishFactor", siDouble, 0.5, 0, 1 );

	op.AddParameter( pdef );

	// Connect operator

	op.Connect(oObject);

}

function MySplatter_Update( ctx, out, InGeom, InGPosY )

{

	// Declare variables.

	var dSquishPnt,  i;

	// Get the squish factor.

	var dSquish = ctx.Parameters("SquishFactor").Value

	// Get the array of point positions.

	var aPnts = InGeom.Value.Geometry.Points.PositionArray.toArray();

	// Get the object//s global Y position.

	var dGPosYObj = InGPosY.Value;

	// For each point...

	for ( var i = 0; i < aPnts.length / 3; i++ )

	{

		// Compute the point's global Y position.

		var dGPosYPnt = aPnts[1 + (i*3)] + dGPosYObj;

		// If the point is below the Y=0 plane...

		if ( dGPosYPnt < 0 ) 

		{

			// Compute the squish factor for the point.

			var dSquishPnt = 1.0 - dGPosYPnt * dSquish;

			// Squish the point.

			aPnts[0 + (i*3)] = aPnts[0 + (i*3)] * dSquishPnt;

			aPnts[1 + (i*3)] = - dGPosYObj;

			aPnts[2 + (i*3)] = aPnts[2 + (i*3)] * dSquishPnt;

		}

	}

	// Update the object//s point positions.

	out.Value.Geometry.Points.PositionArray = aPnts;

	return;

}

//