1 files changed, 157 insertions, 0 deletions
diff --git a/movieobjects/dmemorphoperator.cpp b/movieobjects/dmemorphoperator.cpp
new file mode 100644
index 0000000..95b0f98
--- /dev/null
+++ b/movieobjects/dmemorphoperator.cpp
@@ -0,0 +1,157 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+#include "movieobjects/dmemorphoperator.h"
+#include "movieobjects/dmevertexdata.h"
+#include "movieobjects/dmemesh.h"
+#include "movieobjects_interfaces.h"
+#include "datamodel/dmelementfactoryhelper.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+//-----------------------------------------------------------------------------
+// Expose this class to the scene database 
+//-----------------------------------------------------------------------------
+IMPLEMENT_ELEMENT_FACTORY( DmeMorphOperator, CDmeMorphOperator );
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CDmeMorphOperator::OnConstruction()
+{
+	m_mesh.Init( this, "mesh", FATTRIB_HAS_CALLBACK );
+	m_deltaStateWeights.Init( this, "deltaStateWeights", FATTRIB_MUSTCOPY );
+	m_baseStateName.Init( this, "baseStateName", FATTRIB_TOPOLOGICAL );
+}
+
+void CDmeMorphOperator::OnDestruction()
+{
+}
+
+
+//-----------------------------------------------------------------------------
+// accessors
+//-----------------------------------------------------------------------------
+uint CDmeMorphOperator::NumDeltaStateWeights()
+{
+	return m_deltaStateWeights.Count();
+}
+
+CDmElement *CDmeMorphOperator::GetDeltaStateWeight( uint i )
+{
+	return m_deltaStateWeights[ i ];
+}
+
+CDmeMesh *CDmeMorphOperator::GetMesh()
+{
+	return m_mesh.GetElement();
+}
+
+
+//-----------------------------------------------------------------------------
+// This function gets called whenever an attribute changes
+//-----------------------------------------------------------------------------
+void CDmeMorphOperator::OnAttributeChanged( CDmAttribute *pAttribute )
+{
+	if ( pAttribute == m_mesh.GetAttribute() )
+	{
+		CDmeMesh *pMesh = GetMesh();
+		if ( pMesh )
+		{
+#if 0 // right now, the file already contains these weights, and re-creating them breaks the channel connections
+			m_deltaStateWeights.RemoveAll();
+
+			uint dn = pMesh->NumDeltaStates();
+			for ( uint di = 0; di < dn; ++di )
+			{
+				CDmElement *pDeltaState = pMesh->GetDeltaState( di );
+				const char *name = pDeltaState->GetName();
+
+				CDmElement *pDeltaWeight = CreateElement< CDmElement >( name, GetFileId() );
+				pDeltaWeight->SetAttributeValue( "weight", 0.0f );
+
+				m_deltaStateWeights.AddToTail( pDeltaWeight->GetHandle() );
+			}
+#endif
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CDmeMorphOperator::Operate()
+{
+	CDmeMesh *mesh = GetMesh();
+
+	uint mn = NumDeltaStateWeights();
+	for ( uint mi = 0; mi < mn; ++mi )
+	{
+		CDmElement *pDeltaState = GetDeltaStateWeight( mi );
+		const char *deltaName = pDeltaState->GetName();
+		float deltaWeight = pDeltaState->GetValue< float >( "weight" );
+
+		int di = mesh->FindDeltaStateIndex( deltaName );
+		if ( di != -1 )
+		{
+			mesh->SetDeltaStateWeight( di, MESH_DELTA_WEIGHT_NORMAL, deltaWeight );
+		}
+		else
+		{
+			Msg( "MorphOperator::Operate: invalid delta state name: %s\n", deltaName );
+		}
+	}
+}
+
+// hack to avoid MSVC complaining about multiply defined symbols
+namespace MorphOp
+{
+void AddAttr( CUtlVector< CDmAttribute * > &attrs, CDmAttribute *pAttr )
+{
+	if ( pAttr == NULL )
+		return;
+	attrs.AddToTail( pAttr );
+}
+
+void AddVertexAttributes( CUtlVector< CDmAttribute * > &attrs, CDmElement *pObject )
+{
+	AddAttr( attrs, pObject->GetAttribute( "coordinates" ) );
+	AddAttr( attrs, pObject->GetAttribute( "normals" ) );
+	AddAttr( attrs, pObject->GetAttribute( "textureCoordinates" ) );
+	// TODO - add colors, occlusionFactors, boneIndices*, boneWeights*, tangents
+}
+};
+using namespace MorphOp;
+
+void CDmeMorphOperator::GetInputAttributes( CUtlVector< CDmAttribute * > &attrs )
+{
+	uint nWeights = NumDeltaStateWeights();
+	for ( uint wi = 0; wi < nWeights; ++wi )
+	{
+		CDmElement *pDelta = GetDeltaStateWeight( wi );
+		AddAttr( attrs, pDelta->GetAttribute( "weight" ) );
+	}
+
+	CDmeMesh *pMesh = GetMesh();
+	CDmeVertexData *pBaseState = pMesh->FindBaseState( m_baseStateName.Get() );
+	AddVertexAttributes( attrs, pBaseState );
+
+	uint nDeltas = pMesh->DeltaStateCount();
+	for ( uint di = 0; di < nDeltas; ++di )
+	{
+		CDmElement *pDeltaState = pMesh->GetDeltaState( di );
+		AddAttr( attrs, pDeltaState->GetAttribute( "indices" ) );
+		AddVertexAttributes( attrs, pDeltaState );
+	}
+}
+
+void CDmeMorphOperator::GetOutputAttributes( CUtlVector< CDmAttribute * > &attrs )
+{
+	AddVertexAttributes( attrs, GetMesh() );
+}