/*
        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;
}
//