1

movieobjects/dmefaceset.cpp

@@ -0,0 +1,187 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+#include "movieobjects/dmefaceset.h"
+#include "movieobjects/dmematerial.h"
+#include "tier0/dbg.h"
+#include "UtlBuffer.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( DmeFaceSet, CDmeFaceSet );
+
+
+//-----------------------------------------------------------------------------
+// Constructor, destructor
+//-----------------------------------------------------------------------------
+void CDmeFaceSet::OnConstruction()
+{
+	m_indices.Init( this, "faces" );
+	m_material.Init( this, "material" );
+}
+
+void CDmeFaceSet::OnDestruction()
+{
+}
+
+
+//-----------------------------------------------------------------------------
+// accessors
+//-----------------------------------------------------------------------------
+CDmeMaterial *CDmeFaceSet::GetMaterial()
+{
+	return m_material.GetElement();
+}
+
+void CDmeFaceSet::SetMaterial( CDmeMaterial *pMaterial )
+{
+	m_material = pMaterial;
+}
+
+int CDmeFaceSet::AddIndices( int nCount )
+{
+	int nCurrentCount = m_indices.Count();
+	m_indices.EnsureCount( nCount + nCurrentCount );
+	return nCurrentCount;
+}
+
+void CDmeFaceSet::SetIndices( int nFirstIndex, int nCount, int *pIndices )
+{
+	m_indices.SetMultiple( nFirstIndex, nCount, pIndices );
+}
+
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+void CDmeFaceSet::SetIndex( int i, int nValue )
+{
+	m_indices.Set( i, nValue );
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the number of triangulated indices
+//-----------------------------------------------------------------------------
+int CDmeFaceSet::GetNextPolygonVertexCount( int nFirstIndex ) const
+{
+	int nCurrIndex = nFirstIndex;
+	int nTotalCount = m_indices.Count();
+	while( nCurrIndex < nTotalCount )
+	{
+		if ( m_indices[nCurrIndex] == -1 )
+			break;
+		++nCurrIndex;
+	}
+
+	return nCurrIndex - nFirstIndex;
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the number of triangulated indices total
+//-----------------------------------------------------------------------------
+int CDmeFaceSet::GetTriangulatedIndexCount() const
+{
+	int nIndexCount = 0;
+	int nVertexCount = 0;
+	int nTotalCount = m_indices.Count();
+	for ( int nCurrIndex = 0; nCurrIndex < nTotalCount; ++nCurrIndex )
+	{
+		if ( m_indices[nCurrIndex] == -1 )
+		{
+			if ( nVertexCount >= 3 )
+			{
+				nIndexCount += ( nVertexCount - 2 ) * 3;
+			}
+			nVertexCount = 0;
+			continue;
+		}
+
+		++nVertexCount;
+	}
+
+	if ( nVertexCount >= 3 )
+	{
+		nIndexCount += ( nVertexCount - 2 ) * 3;
+	}
+
+	return nIndexCount;
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the number of indices total
+//-----------------------------------------------------------------------------
+int CDmeFaceSet::GetIndexCount() const
+{
+	int nIndexCount = 0;
+	int nVertexCount = 0;
+	int nTotalCount = m_indices.Count();
+
+	for ( int nCurrIndex = 0; nCurrIndex < nTotalCount; ++nCurrIndex )
+	{
+		if ( m_indices[nCurrIndex] == -1 )
+		{
+			nIndexCount += nVertexCount;
+			nVertexCount = 0;
+			continue;
+		}
+
+		++nVertexCount;
+	}
+
+	nIndexCount += nVertexCount;
+
+	return nIndexCount;
+}
+
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+void CDmeFaceSet::RemoveMultiple( int elem, int num )
+{
+	m_indices.RemoveMultiple( elem, num );
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the number of faces in the face set
+//-----------------------------------------------------------------------------
+int CDmeFaceSet::GetFaceCount() const
+{
+	int nFaceCount = 0;
+	int nVertexCount = 0;
+
+	const int nIndexCount = NumIndices();
+	for ( int i = 0; i < nIndexCount; ++i )
+	{
+		if ( GetIndex( i ) < 0 )
+		{
+			if ( nVertexCount > 0 )
+			{
+				++nFaceCount;
+			}
+			nVertexCount = 0;
+			continue;
+		}
+
+		++nVertexCount;
+	}
+
+	if ( nVertexCount > 0 )
+	{
+		++nFaceCount;
+	}
+
+	return nFaceCount;
+}