This property is only available within the Update callback of a
Operator. It is either set or read
depending whether the output is a Parameter or an object.
When the operator OutputPort is connected to a Parameter, this property lets you set the
value of the parameter. (Trying to change the value through
Parameter.Value would have no
effect).
When the operator OutputPort is connected to an object this
property returns the SDK object corresponding to the output.
Note: In the case of an operator with multiple outputs, it is only
correct to access this property on the currently evaluated output
port.
/*
This example illustrates how to use the OutputPort.Value property within
the context of the _Update function of a runtime scripted operator
*/
NewScene( null, false );
var oObject = Application.ActiveSceneRoot.AddGeometry( "Sphere", "MeshSurface" );
apply_taper( oObject );
// This is the _Update callback used for the 'MyTaper' runtime operator
function MyTaper_Update( ctx, Out, InGeom )
{
// Get the taper factor.
var dFactor = ctx.Parameters("Factor").Value
// Get the array of point positions.
var aPnts = InGeom.Value.Geometry.Points.PositionArray.toArray();
// Taper
for ( var i = 0; i < aPnts.length / 3; i++ )
{
var dTaper = (1 - ( aPnts[1 + (i*3)] * dFactor ))
aPnts[0 + (i*3)] = aPnts[0 + (i*3)] * dTaper;
aPnts[1 + (i*3)] = aPnts[1 + (i*3)];
aPnts[2 + (i*3)] = aPnts[2 + (i*3)] * dTaper;
}
// Set the points by accessing the geometry via
// the OutputPort.Value property
Out.Value.Geometry.Points.PositionArray = aPnts;
}
// This function creates the 'MyTaper' operator on the fly and then connects it
// immediately to the input object.
function apply_taper( oObject )
{
var op = XSIFactory.CreateScriptedOp( "MyTaper", MyTaper_Update.toString(), "JScript" );
// Define connections
var ioport = op.AddIOPort( oObject.ActivePrimitive, "Geom" );
// Define parameters
var pdef = XSIFactory.CreateParamDef2( "Factor", siDouble, 0.5, 0, 1 );
op.AddParameter( pdef );
// Connect operator
op.Connect( oObject );
}
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