GetFCurveInfo
Gets function curve information for a parameter.
Note: This command uses output
arguments. C# and some scripting languages (such as JScript,
PerlScript and Python) don't support arguments passed by reference
so you need to use the best workaround for your situation:
For scripting languages this command returns an ISIVTCollection which you can
use to get the output arguments.
For C# you can use the XSIApplication.ExecuteCommand
method to call this command. ExecuteCommand packs the output
arguments into a C# System.Object containing an Array of the output arguments (see
Calling
Commands from C#).
GetFCurveInfo( InputObj, [CurveKind], [ValueWhenNoKey], [NbKeys], [ExtrapolationKind], [DefaultSegKind], [LowClamp], [HighClamp] ); |
| Parameter | Type | Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| InputObj | String | FCurve animation source. | ||||||||||||
| CurveKind | Integer | Returns the type of function curve.
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| ValueWhenNoKey | Double | Returns the value of the function curve when it has no keys. | ||||||||||||
| NbKeys | Integer | Returns the number of keys. | ||||||||||||
| ExtrapolationKind | Integer | Returns the extrapolation type of the function curve.
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| DefaultSegKind | Integer | Returns the default segment kind. Applies to standard function
curves.
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| LowClamp | Double | Returns the lower-clamping value. | ||||||||||||
| HighClamp | Double | Returns the higher-clamping value. |
dim source, fcurve
dim crvtype, nokeyval, nbKeys, extrap, seq, lowclamp, highclamp
GetPrim "Null"
' Save some keys on the X position of the Null object
SaveKey "Null.kine.local.posx", 1, -5.0
SaveKey "Null.kine.local.posx", 25, 7.0
SaveKey "Null.kine.local.posx", 50, 2.0
' Get the FCurve animation source
set source = GetSource( "Null.kine.local.posx", siFCurveSource )
for each fcurve in source
GetFCurveInfo fcurve, crvtype, nokeyval, nbKeys, extrap, seq, lowclamp, highclamp
Application.LogMessage "Number of keys : " & nbKeys
Application.LogMessage "Value when no keys : " & nokeyval
Application.LogMessage "Type of fcurve : " & crvtype
Application.LogMessage "Extrapolation type : " & extrap
Application.LogMessage "Default segment type: " & seq
Application.LogMessage "Lower clamp bound : " & lowclamp
Application.LogMessage "Upper clamp bound : " & highclamp
next
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// This example illustrates how to get access to the output
// arguments returned by the GetFCurveInfo command.
// Commands that don't explicitly define a return value but have output
// arguments in fact have an implicit return value which contains collection
// object ( IVTCollection ). The .value is a method on this object.
// Create scene
NewScene("",false);
GetPrim("Null", null, null);
SetValue("null.Name", "null", null);
CreatePrim("Arc", "NurbsCurve", null, null);
SelectObj("null", null, true);
ApplyCns("Path", "null", "arc", null);
SaveKey("null.kine.pathcns.perc", 1, 0, null);
LastFrame();
SetValue("null.kine.pathcns.perc", 100, null);
SaveKey("null.kine.pathcns.perc", 100, 100, null);
// Get the fcurve from a string path
var col = GetSource("null.kine.pathcns.perc");
var src = col(0);
// Get the fcurve info
var vtcol = GetFCurveInfo( src );
// Dump the fcurve info
Application.LogMessage( "CurveKind = " + vtcol.value("CurveKind") );
Application.LogMessage( "ValueWhenNoKey= " + vtcol.value("ValueWhenNoKey") );
Application.LogMessage( "NbKeys= " + vtcol.value("NbKeys") );
Application.LogMessage( "ExtrapolationKind= " + vtcol.value("ExtrapolationKind") );
Application.LogMessage( "DefaultSegKind= " + vtcol.value("DefaultSegKind") );
Application.LogMessage( "LowClamp= " + vtcol.value("LowClamp") );
Application.LogMessage( "HighClamp= " + vtcol.value("HighClamp") );
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