ClipEffectItem Class
Reference
#include <xsi_clipeffectitem.h>
A ClipEffectItem is an expression which is bound to a MappedItem of a Clip.
You can get the ClipEffectItem from either ClipEffect::GetItems or MappedItem::GetClipEffectItem.
using namespace XSI;
Application app;
Model root = app.GetActiveSceneRoot();
X3DObject myCube;
root.AddGeometry( L"Cube", L"MeshSurface", L"", myCube );
//Creating the first animation source
CValueArray args(9);
CValue outArg;
args[0] = root;
args[1] = L"cube.kine.local.posx,cube.kine.local.posy,cube.kine.local.posz";
args[2] = 1l;
args[3] = L"StoredStaticPose";
args[4] = true;
args[5] = 1l;
args[6] = 5l;
args[7] = false;
args[8] = false;
app.ExecuteCommand( L"StoreAction", args, outArg );
Source mySource(outArg);
//Creating the first clip
CValueArray addClipArgs(6);
addClipArgs[0] = root;
addClipArgs[1] = mySource.GetFullName();
addClipArgs[5] = L"MyClip1";
app.ExecuteCommand( L"AddClip", addClipArgs, outArg );
Clip myClip(outArg);
CRefArray mappedItems = myClip.GetMappedItems();
// Find the mapped item on which we wan't to add an effect.
// We are looking for the local.posy parameter
LONG i;
MappedItem currItem;
for(i = 0; i < mappedItems.GetCount(); ++i)
{
currItem = mappedItems[i];
Parameter param = currItem.GetDestination();
if(param.GetFullName().IsEqualNoCase(L"cube.kine.local.posy"))
{
CValueArray mappingRuleArgs(4);
mappingRuleArgs[0] = myClip.GetFullName() + L".ActionClip";
mappingRuleArgs[1] = param;
mappingRuleArgs[2] = L"frame";
mappingRuleArgs[3] = (LONG)(i + 1);
app.ExecuteCommand(L"SetMappingRule", mappingRuleArgs, outArg);
break;
}
}
ClipEffectItem effectItem(currItem.GetClipEffectItem());
app.LogMessage(L"The expression associated with the posy item is >> " +
effectItem.GetExpression());
Public Member Functions |
|
| ClipEffectItem () | |
| ~ClipEffectItem () | |
| ClipEffectItem (const CRef &in_ref) | |
| ClipEffectItem (const ClipEffectItem &in_obj) | |
| bool | IsA (siClassID in_ClassID) const |
| siClassID | GetClassID () const |
| ClipEffectItem & | operator= (const ClipEffectItem &in_obj) |
| ClipEffectItem & | operator= (const CRef &in_ref) |
| Parameter | GetParameter () const |
| CString | GetExpression () const |
| ClipEffectItem | ( | ) |
Default constructor.
| ~ClipEffectItem | ( | ) |
Default destructor.
| ClipEffectItem | ( | const CRef & | in_ref | ) |
Constructor.
| in_ref | constant reference object. |
| ClipEffectItem | ( | const ClipEffectItem & | in_obj | ) |
Copy constructor.
| in_obj | constant class object. |
| bool IsA | ( | siClassID | in_ClassID | ) | const [virtual] |
Returns true if a given class type is compatible with this API class.
| in_ClassID | class type. |
Reimplemented from SIObject.
| siClassID GetClassID | ( | ) | const [virtual] |
| ClipEffectItem& operator= | ( | const ClipEffectItem & | in_obj | ) |
Creates an object from another object. The newly created object is set to empty if the input object is not compatible.
| in_obj | constant class object. |
| ClipEffectItem& operator= | ( | const CRef & | in_ref | ) |
Creates an object from a reference object. The newly created object is set to empty if the input reference object is not compatible.
| in_ref | constant class object. |
Reimplemented from SIObject.
| Parameter GetParameter | ( | ) | const |
Returns the parameter which is specific to this ClipEffectItem object. You can use the value of this parameter within the ClipEffectItem expression by using the token "param".
| CString GetExpression | ( | ) | const |
Returns the string representation of the expression used by the ClipEffectItem. The valid tokens that can be used in the context of this expression can be found in the Animation guide under the clip effect expression section.
using namespace XSI;
// Forward declarations
CString GetRelativeNameForTarget( Parameter& in_param );
void CreateStaticSource();
Application app;
// NewScene command
CValueArray cargs; CValue oarg;
cargs.Add( L"" ); cargs.Add( false );
app.ExecuteCommand( L"NewScene", cargs, oarg );
cargs.Clear(); oarg.Clear();
// Set up the scene
Model root = app.GetActiveSceneRoot();
CreateStaticSource();
// Get the first clip in the mixer
Mixer mix = root.GetMixer();
CRefArray cliplist = mix.GetClips();
Clip clp( cliplist[0] );
// Avoid the audio clips
if ( clp.GetType() != siClipAudioType )
{
CRefArray mappings = clp.GetMappedItems();
if ( mappings.IsValid() )
{
for ( LONG i=0; i<mappings.GetCount(); i++ )
{
MappedItem mapitem( mappings[i] );
// Get the driven parameter, looking for posy
Parameter driven( mapitem.GetDestination() );
if ( driven.GetFullName() == L"MyNull.kine.local.posy" )
{
// SetMappingRule command
CValueArray mapArgs; CValue mapOut;
mapArgs.Add( clp.GetFullName() + L".ActionClip" );
mapArgs.Add( driven.GetFullName() );
mapArgs.Add( L"frame" );
mapArgs.Add( CValue(i+1.0) );
app.ExecuteCommand( L"SetMappingRule", mapArgs, mapOut );
// If there is an expression on the clip effect item, display it
ClipEffectItem clpfxitm = mapitem.GetClipEffectItem();
if ( clpfxitm.GetExpression() != L"" )
{
app.LogMessage( L"The ClipEffectItem driving the " + driven.GetFullName()
+ L" parameter has this expression: " + clpfxitm.GetExpression() );
}
break;
}
}
}
}
// Expected Results:
//INFO : The ClipEffectItem driving the MyNull.kine.local.posy parameter has this expression: frame
// This is a handy function to have around if you're going to create an action
// source or clip on a parameter that is in a nested model (ie., not directly
// under the Scene_Root) because AddClip will force a mapping template if your
// parameter is not relative.
CString GetRelativeNameForTarget( Parameter& in_param )
{
Model mdl = in_param.GetModel();
CString mdlname = mdl.GetFullName();
if ( mdlname.IsEqualNoCase(L"Scene_Root") )
{
return in_param.GetFullName();
} else {
CString tmp = in_param.GetFullName();
CString lookfor = mdlname + L".";
CString foundsofar = L"";
CString relpath = L"";
for ( ULONG i=0; i<tmp.Length(); ++i )
{
if ( foundsofar.IsEqualNoCase(lookfor) )
{
relpath += tmp[i];
} else {
foundsofar += tmp[i];
}
}
return relpath;
}
}
// Convenience function
void CreateStaticSource()
{
Application app;
// Get the SceneRoot and create a cone in it
Model root = app.GetActiveSceneRoot();
Null n; root.AddNull( L"MyNull", n );
// Get the parameters to use as targets
Parameter posx = n.GetParameter( L"posx" ); CString rposx = GetRelativeNameForTarget( posx );
Parameter posy = n.GetParameter( L"posy" ); CString rposy = GetRelativeNameForTarget( posy );
Parameter posz = n.GetParameter( L"posz" ); CString rposz = GetRelativeNameForTarget( posz );
// Create a stored static pose
ActionSource src = root.AddActionSource( L"StoredStaticPose" );
src.AddSourceItem( rposx, 5.5743, true );
src.AddSourceItem( rposy, 0.1953, true );
src.AddSourceItem( rposy, -0.0195, true );
// Instantiate it in the mixer
CValueArray clpArgs(9); CValue clpOut;
clpArgs[0] = root.GetFullName();
clpArgs[1] = src.GetFullName();
clpArgs[4] = CValue(4.0); // starts at frame 4
app.ExecuteCommand( L"AddClip", clpArgs, clpOut );
}