v4.0
operator
Applies a generator operator and returns the newly created
operator(s). (A generator operator is an operator which creates new
geometry, such as the Loft, CrvStitch, and
SrfFillet
operators.) The newly generated objects are also available via one
of the following methods:
(1) Use the output argument OutputObjs (only available for VBScript
because most languages cannot cope with both an output argument and
a return value--see the note below).
(2) Use Operator.OutputPorts first
on the output operator and then use Port.Target2 on an item of the
returned collection (as demonstrated in the JScript example
below.
Warning: If you use the OutputPorts/Target2 method of getting the
newly generated objects, remember that you can only access the
output ports on an operator if it was applied in persistent mode
(ie., don't freeze it until you get a pointer to the target
object).
You can also use the generic ApplyOp
command to apply a generator operator; however, if you want to hide
or delete the input objects (original geometry) or you want the new
geometry to be a polymsh, you must use this command.
Note: This command uses output
arguments. C# and some scripting languages (such as JScript,
PerlScript and Python) don't support arguments passed by reference.
Normally you can get the output arguments via either XSIApplication.ExecuteCommand
method (C#) or the ISIVTCollection (scripting
languages), but this command already returns a value.
The only available workaround in this case is to create a VBScript
custom command which returns both the output arguments and the
return value in one array. For details, see What Happens when the Function Already
Returns a Value?.
oReturn = ApplyGenOp( PresetObj, [Target], [ConnectionSet], [ConnectType], [ImmediateMode], [GenOpInputsDisposal], [OutputObjs] ); |
Returns an XSICollection that contains the
newly created operators.
Note: If you apply the operator in ImmediateMode (which immediately
freezes it), you still get a collection of the operators applied,
but they are invalid (not connected to anything in the scene).
| Parameter | Type | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PresetObj | String or a preset object (see SIGetPreset) | Generator and Converter Operators | ||||||||
| Target | String | Geometry type of the output surface for the following
surface-from-curves types of operators: "Birail", "CrvNet", "Extrusion", "ExtrusionAlongAxis", "ExtrusionTwoProfiles", "FourSided", "Loft", "Revolution", and "RevolutionAroundAxis" Default Value: NurbsSurface
|
||||||||
| ConnectionSet | ConnectionSet | Specifies the objects connected to an operator. See OpPreset for details on the
connection set required for the specific operator you are
using. Note: Because this is an in/out parameter, any string (variable or value) you pass into this parameter is automatically converted to a ConnectionSet. Default Value:
Currently selected objects are used as the main group. |
||||||||
| ConnectType | siBranchFlag | Specifies the type of connection (node or branch).
Default Value: siUnspecified |
||||||||
| ImmediateMode | siOperationMode | Specifies whether or not the operator should be immediately
frozen.
Default Value: siPersistentOperation |
||||||||
| GenOpInputsDisposal | siGeneratorInputsDisposalMode | Specifies what to do with the input objects after the operation
is performed.
Default Value: siKeepGenOpInputs
|
||||||||
| OutputObjs | XSICollection | Returns a collection of X3DObject object(s) created by the generator operator. |
/*
This example demonstrates how to get the newly generated object after
applying one of the generator ops with the ApplyGenOp command.
It also demonstrates how to extract the newly applied operator
object from the special ISIVTCollection which is a workaround for
languages like JScript that don't support output arguments.
*/
NewScene( null, false );
// Use a Nurbs disc to apply the Fit Surface operator
var original_3dobject = CreatePrim( "Disc", "NurbsSurface" );
original_3dobject.innerradius.Value = 0.5;
Application.LogMessage( original_3dobject.Name + " is a " + ClassName(original_3dobject) );
// Get the ISIVTCollection back from this command. In this example, it contains
// only one object (our operator), so we can just use this shortcut
// NB: You cannot use siImmediateOperation for the ImmediateMode parameter if you
// want to get at the new object, because a frozen operator is invalid.
var new_srffit_op = ApplyGenOp( "SrfFit", "NurbsSurface", original_3dobject,
siUnspecified, siPersistentOperation, siKeepGenOpInputs, null)(0);
Application.LogMessage( new_srffit_op.Name + " is a " + ClassName(new_srffit_op) );
// You can change the operator's parameters to tweak the new surface mesh
new_srffit_op.Parameters( "upoints" ).Value = 5;
new_srffit_op.Parameters( "upoints" ).Value = 5;
new_srffit_op.Parameters( "udeg" ).Value = 1;
new_srffit_op.Parameters( "vdeg" ).Value = 1;
// You can also get the newly generated object
var newly_generated_object = new_srffit_op.OutputPorts(0).Target2.Parent;
Application.LogMessage( newly_generated_object.Name + " is a " + ClassName(newly_generated_object) );
// Output of above script:
//INFO : disc is a X3DObject
//INFO : Fit surface is a Operator
//INFO : surfmsh is a X3DObject
|
' ' This example demonstrates how to merge two mesh objects together and automatically delete the originals. ' CreatePrim "Grid", "MeshSurface" Duplicate "grid", , 2, 1, 1, 0, 0, 1, 0, 1, , , , , , , , , , , 0 Translate , 8.31067961165049, -8.32607541679225E-18, 0.135979621382887, siRelative, siView, siObj, siXYZ SelectObj "grid", , True AddToSelection "grid1", , True ApplyGenOp "MeshMerge", , , 3, siImmediateOperation, siDeleteGenOpInputs |
' ' This example demonstrates how to create surfaces from curves. It creates two polymsh objects and two ' srfmesh objects from the same input curves. ' NewScene , false Dim oMeshRev, oMeshExt Dim oNurbsRev, oNurbsExt ' Create the two curves to use to create surfaces CreatePrim "Circle", "NurbsCurve" CreatePrim "Circle", "NurbsCurve" SetValue "circle1.circle.radius", 2 Translate "circle1", 7, 0, 0, siAbsolute, siParent, siObj, siX ' Create NURBS surfaces of revolution and extrusion. ApplyGenOp "RevolutionAroundAxis", "NurbsSurface", "circle1", 3, siPersistentOperation, siKeepGenOpInputs, oNurbsRev Translate , 16, 0, 0, siAbsolute, siParent, siObj, siX Translate , 0, 8, 0, siAbsolute, siParent, siObj, siY ApplyGenOp "Extrusion", "NurbsSurface", "circle1;circle", 3, siPersistentOperation, siKeepGenOpInputs, oNurbsExt Translate , 16, 0, 0, siAbsolute, siParent, siObj, siX ' Create Mesh surfaces of revolution and extrusion. ApplyGenOp "RevolutionAroundAxis", "MeshSurface", "circle1", 3, siPersistentOperation, siKeepGenOpInputs, oMeshRev Translate , -12, 0, 0, siAbsolute, siParent, siObj, siX Translate , 0, 8, 0, siAbsolute, siParent, siObj, siY ApplyGenOp "Extrusion", "MeshSurface", "circle1;circle", 3, siPersistentOperation, siKeepGenOpInputs, oMeshExt Translate , -12, 0, 0, siAbsolute, siParent, siObj, siX ' Move a point on input circle to show the effect on all created surfaces from curve. Translate "circle1.pnt[12]", 0.0, 2, 0.0, siRelative, siView, siObj, siXYZ SetDisplayMode "Camera", "shaded" ' Select output and log information about created surfaces. SelectObj oMeshRev,,True AddToSelection oMeshExt,,True AddToSelection oNurbsRev,,True AddToSelection oNurbsExt,,True Application.LogMessage "Mesh Created from Revolution: " & oMeshRev Application.LogMessage "Mesh Created from Extrusion: " & oMeshExt Application.LogMessage "NURBS Created from Revolution: " & oNurbsRev Application.LogMessage "NURBS Created from Extrusion: " & oNurbsExt ' Running this script should log the following: ' --------------------------------------------- 'INFO : "Mesh Created from Revolution: polymsh" 'INFO : "Mesh Created from Extrusion: polymsh1" 'INFO : "NURBS Created from Revolution: surfmsh" 'INFO : "NURBS Created from Extrusion: surfmsh1" |