Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= 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() );
}