1HEADmaster

1 files changed, 1742 insertions, 0 deletions

diff --git a/utils/nvtristriplib/nvtristripobjects.cpp b/utils/nvtristriplib/nvtristripobjects.cpp
new file mode 100644
index 0000000..647956a
--- /dev/null
+++ b/utils/nvtristriplib/nvtristripobjects.cpp
@@ -0,0 +1,1742 @@
+
+#pragma warning( disable : 4786 4018 4530 )  
+
+#include <assert.h>
+#include <set>
+#include "NvTriStripObjects.h"
+#include "VertexCache.h"
+#include "tier0/platform.h"
+
+#define CACHE_INEFFICIENCY 6
+
+NvStripifier::NvStripifier()
+{
+	
+}
+
+NvStripifier::~NvStripifier()
+{
+	
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindEdgeInfo()
+//
+// find the edge info for these two indices
+//
+NvEdgeInfo * NvStripifier::FindEdgeInfo(NvEdgeInfoVec &edgeInfos, int v0, int v1){
+	
+	// we can get to it through either array
+	// because the edge infos have a v0 and v1
+	// and there is no order except how it was
+	// first created.
+	NvEdgeInfo *infoIter = edgeInfos[v0];
+	while (infoIter != NULL){
+		if (infoIter->m_v0 == v0){
+			if (infoIter->m_v1 == v1)
+				return infoIter;
+			else
+				infoIter = infoIter->m_nextV0;
+		}
+		else {
+			assert(infoIter->m_v1 == v0);
+			if (infoIter->m_v0 == v1)
+				return infoIter;
+			else
+				infoIter = infoIter->m_nextV1;
+		}
+	}
+	return NULL;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindOtherFace
+//
+// find the other face sharing these vertices
+// exactly like the edge info above
+//
+NvFaceInfo * NvStripifier::FindOtherFace(NvEdgeInfoVec &edgeInfos, int v0, int v1, NvFaceInfo *faceInfo){
+	NvEdgeInfo *edgeInfo = FindEdgeInfo(edgeInfos, v0, v1);
+
+	if( (edgeInfo == NULL) && (v0 == v1))
+	{
+		//we've hit a degenerate
+		return NULL;
+	}
+
+	assert(edgeInfo != NULL);
+	return (edgeInfo->m_face0 == faceInfo ? edgeInfo->m_face1 : edgeInfo->m_face0);
+}
+
+
+bool NvStripifier::AlreadyExists(NvFaceInfo* faceInfo, NvFaceInfoVec& faceInfos)
+{
+	for(int i = 0; i < faceInfos.size(); ++i)
+	{
+		if( (faceInfos[i]->m_v0 == faceInfo->m_v0) &&
+			(faceInfos[i]->m_v1 == faceInfo->m_v1) &&
+			(faceInfos[i]->m_v2 == faceInfo->m_v2) )
+			return true;
+	}
+
+	return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// BuildStripifyInfo()
+//
+// Builds the list of all face and edge infos
+//
+void NvStripifier::BuildStripifyInfo(NvFaceInfoVec &faceInfos, NvEdgeInfoVec &edgeInfos,
+									 const unsigned short maxIndex)
+{
+	// reserve space for the face infos, but do not resize them.
+	int numIndices = indices.size();
+	faceInfos.reserve(numIndices / 3);
+	
+	// we actually resize the edge infos, so we must initialize to NULL
+	edgeInfos.resize(maxIndex + 1);
+	for (int i = 0; i < maxIndex + 1; i++)
+		edgeInfos[i] = NULL;
+	
+	// iterate through the triangles of the triangle list
+	int numTriangles = numIndices / 3;
+	int index        = 0;
+	bool bFaceUpdated[3];
+
+	for (int i = 0; i < numTriangles; i++)
+	{	
+		bool bMightAlreadyExist = true;
+		bFaceUpdated[0] = false;
+		bFaceUpdated[1] = false;
+		bFaceUpdated[2] = false;
+
+		// grab the indices
+		int v0 = indices[index++];
+		int v1 = indices[index++];
+		int v2 = indices[index++];
+
+		//we disregard degenerates
+		if(IsDegenerate(v0, v1, v2))
+			continue;
+		
+		// create the face info and add it to the list of faces, but only if this exact face doesn't already 
+		//  exist in the list
+		NvFaceInfo *faceInfo = new NvFaceInfo(v0, v1, v2);
+		
+		// grab the edge infos, creating them if they do not already exist
+		NvEdgeInfo *edgeInfo01 = FindEdgeInfo(edgeInfos, v0, v1);
+		if (edgeInfo01 == NULL)
+		{
+			//since one of it's edges isn't in the edge data structure, it can't already exist in the face structure
+			bMightAlreadyExist = false;
+
+			// create the info
+			edgeInfo01 = new NvEdgeInfo(v0, v1);
+			
+			// update the linked list on both 
+			edgeInfo01->m_nextV0 = edgeInfos[v0];
+			edgeInfo01->m_nextV1 = edgeInfos[v1];
+			edgeInfos[v0] = edgeInfo01;
+			edgeInfos[v1] = edgeInfo01;
+			
+			// set face 0
+			edgeInfo01->m_face0 = faceInfo;
+		}
+		else 
+		{
+			if (edgeInfo01->m_face1 != NULL)
+			{
+//				printf("BuildStripifyInfo: > 2 triangles on an edge... uncertain consequences\n");
+			}
+			else
+			{
+				edgeInfo01->m_face1 = faceInfo;
+				bFaceUpdated[0] = true;
+			}
+		}
+		
+		// grab the edge infos, creating them if they do not already exist
+		NvEdgeInfo *edgeInfo12 = FindEdgeInfo(edgeInfos, v1, v2);
+		if (edgeInfo12 == NULL)
+		{
+			bMightAlreadyExist = false;
+			
+			// create the info
+			edgeInfo12 = new NvEdgeInfo(v1, v2);
+			
+			// update the linked list on both 
+			edgeInfo12->m_nextV0 = edgeInfos[v1];
+			edgeInfo12->m_nextV1 = edgeInfos[v2];
+			edgeInfos[v1] = edgeInfo12;
+			edgeInfos[v2] = edgeInfo12;
+			
+			// set face 0
+			edgeInfo12->m_face0 = faceInfo;
+		}
+		else 
+		{
+			if (edgeInfo12->m_face1 != NULL)
+			{
+//				printf("BuildStripifyInfo: > 2 triangles on an edge... uncertain consequences\n");
+			}
+			else
+			{
+				edgeInfo12->m_face1 = faceInfo;
+				bFaceUpdated[1] = true;
+			}
+		}
+		
+		// grab the edge infos, creating them if they do not already exist
+		NvEdgeInfo *edgeInfo20 = FindEdgeInfo(edgeInfos, v2, v0);
+		if (edgeInfo20 == NULL)
+		{
+			bMightAlreadyExist = false;
+
+			// create the info
+			edgeInfo20 = new NvEdgeInfo(v2, v0);
+			
+			// update the linked list on both 
+			edgeInfo20->m_nextV0 = edgeInfos[v2];
+			edgeInfo20->m_nextV1 = edgeInfos[v0];
+			edgeInfos[v2] = edgeInfo20;
+			edgeInfos[v0] = edgeInfo20;
+			
+			// set face 0
+			edgeInfo20->m_face0 = faceInfo;
+		}
+		else 
+		{
+			if (edgeInfo20->m_face1 != NULL)
+			{
+//				printf("BuildStripifyInfo: > 2 triangles on an edge... uncertain consequences\n");
+			}
+			else
+			{
+				edgeInfo20->m_face1 = faceInfo;
+				bFaceUpdated[2] = true;
+			}
+		}
+
+		if(bMightAlreadyExist)
+		{
+			if(!AlreadyExists(faceInfo, faceInfos))
+				faceInfos.push_back(faceInfo);
+			else
+			{
+				delete faceInfo;
+
+				//cleanup pointers that point to this deleted face
+				if(bFaceUpdated[0])
+					edgeInfo01->m_face1 = NULL;
+				if(bFaceUpdated[1])
+					edgeInfo12->m_face1 = NULL;
+				if(bFaceUpdated[2])
+					edgeInfo20->m_face1 = NULL;
+			}
+		}
+		else
+		{
+			faceInfos.push_back(faceInfo);
+		}
+
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindStartPoint()
+//
+// Finds a good starting point, namely one which has only one neighbor
+//
+int NvStripifier::FindStartPoint(NvFaceInfoVec &faceInfos, NvEdgeInfoVec &edgeInfos)
+{
+	int bestCtr = -1;
+	int bestIndex = -1;
+
+	for(int i = 0; i < faceInfos.size(); i++)
+	{
+		int ctr = 0;
+		
+		if(FindOtherFace(edgeInfos, faceInfos[i]->m_v0, faceInfos[i]->m_v1, faceInfos[i]) == NULL)
+			ctr++;
+		if(FindOtherFace(edgeInfos, faceInfos[i]->m_v1, faceInfos[i]->m_v2, faceInfos[i]) == NULL)
+			ctr++;
+		if(FindOtherFace(edgeInfos, faceInfos[i]->m_v2, faceInfos[i]->m_v0, faceInfos[i]) == NULL)
+			ctr++;
+		if(ctr > bestCtr)
+		{
+			bestCtr = ctr;
+			bestIndex = i;
+			//return i;
+		}
+	}
+	//return -1;
+	
+	if(bestCtr == 0)
+		return -1;
+	else
+		return bestIndex;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindGoodResetPoint()
+//  
+// A good reset point is one near other commited areas so that
+// we know that when we've made the longest strips its because
+// we're stripifying in the same general orientation.
+//
+NvFaceInfo* NvStripifier::FindGoodResetPoint(NvFaceInfoVec &faceInfos, NvEdgeInfoVec &edgeInfos){
+	// we hop into different areas of the mesh to try to get
+	// other large open spans done.  Areas of small strips can
+	// just be left to triangle lists added at the end.
+	NvFaceInfo *result = NULL;
+	
+	if(result == NULL)
+	{
+		int numFaces   = faceInfos.size();
+		int startPoint;
+		if(bFirstTimeResetPoint)
+		{
+			//first time, find a face with few neighbors (look for an edge of the mesh)
+			startPoint = FindStartPoint(faceInfos, edgeInfos);
+			bFirstTimeResetPoint = false;
+		}
+		else
+			startPoint = (int)(((float) numFaces - 1) * meshJump);
+		
+		if(startPoint == -1)
+		{
+			startPoint = (int)(((float) numFaces - 1) * meshJump);
+			
+			//meshJump += 0.1f;
+			//if (meshJump > 1.0f)
+			//	meshJump = .05f;
+		}
+
+		int i = startPoint;
+		do {
+			
+			// if this guy isn't visited, try him
+			if (faceInfos[i]->m_stripId < 0){
+				result = faceInfos[i];
+				break;
+			}
+			
+			// update the index and clamp to 0-(numFaces-1)
+			if (++i >= numFaces)
+				i = 0;
+			
+		} while (i != startPoint);
+		
+		// update the meshJump
+		meshJump += 0.1f;
+		if (meshJump > 1.0f)
+			meshJump = .05f;
+	}
+	
+	// return the best face we found
+	return result;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// GetUniqueVertexInB()
+//
+// Returns the vertex unique to faceB
+//
+int NvStripifier::GetUniqueVertexInB(NvFaceInfo *faceA, NvFaceInfo *faceB){
+	
+	int facev0 = faceB->m_v0;
+	if (facev0 != faceA->m_v0 &&
+		facev0 != faceA->m_v1 &&
+		facev0 != faceA->m_v2)
+		return facev0;
+	
+	int facev1 = faceB->m_v1;
+	if (facev1 != faceA->m_v0 &&
+		facev1 != faceA->m_v1 &&
+		facev1 != faceA->m_v2)
+		return facev1;
+	
+	int facev2 = faceB->m_v2;
+	if (facev2 != faceA->m_v0 &&
+		facev2 != faceA->m_v1 &&
+		facev2 != faceA->m_v2)
+		return facev2;
+	
+	// nothing is different
+	return -1;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// GetSharedVertices()
+//
+// Returns the (at most) two vertices shared between the two faces
+//
+void NvStripifier::GetSharedVertices(NvFaceInfo *faceA, NvFaceInfo *faceB, int* vertex0, int* vertex1)
+{
+	*vertex0 = -1;
+	*vertex1 = -1;
+
+	int facev0 = faceB->m_v0;
+	if (facev0 == faceA->m_v0 ||
+		facev0 == faceA->m_v1 ||
+		facev0 == faceA->m_v2)
+	{
+		if(*vertex0 == -1)
+			*vertex0 = facev0;
+		else
+		{
+			*vertex1 = facev0;
+			return;
+		}
+	}
+	
+	int facev1 = faceB->m_v1;
+	if (facev1 == faceA->m_v0 ||
+		facev1 == faceA->m_v1 ||
+		facev1 == faceA->m_v2)
+	{
+		if(*vertex0 == -1)
+			*vertex0 = facev1;
+		else
+		{
+			*vertex1 = facev1;
+			return;
+		}
+	}	
+
+	int facev2 = faceB->m_v2;
+	if (facev2 == faceA->m_v0 ||
+		facev2 == faceA->m_v1 ||
+		facev2 == faceA->m_v2)
+	{
+		if(*vertex0 == -1)
+			*vertex0 = facev2;
+		else
+		{
+			*vertex1 = facev2;
+			return;
+		}
+	}
+
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// GetNextIndex()
+//
+// Returns vertex of the input face which is "next" in the input index list
+//
+inline int NvStripifier::GetNextIndex(const WordVec &indices, NvFaceInfo *face){
+	
+	int numIndices = indices.size();
+	assert(numIndices >= 2);
+	
+	int v0  = indices[numIndices-2];
+	int v1  = indices[numIndices-1];
+	
+	int fv0 = face->m_v0;
+	int fv1 = face->m_v1;
+	int fv2 = face->m_v2;
+	
+	if (fv0 != v0 && fv0 != v1){
+		if ((fv1 != v0 && fv1 != v1) || (fv2 != v0 && fv2 != v1)){
+			printf("GetNextIndex: Triangle doesn't have all of its vertices\n");
+			printf("GetNextIndex: Duplicate triangle probably got us derailed\n");
+		}
+		return fv0;
+	}
+	if (fv1 != v0 && fv1 != v1){
+		if ((fv0 != v0 && fv0 != v1) || (fv2 != v0 && fv2 != v1)){
+			printf("GetNextIndex: Triangle doesn't have all of its vertices\n");
+			printf("GetNextIndex: Duplicate triangle probably got us derailed\n");
+		}
+		return fv1;
+	}
+	if (fv2 != v0 && fv2 != v1){
+		if ((fv0 != v0 && fv0 != v1) || (fv1 != v0 && fv1 != v1)){
+			printf("GetNextIndex: Triangle doesn't have all of its vertices\n");
+			printf("GetNextIndex: Duplicate triangle probably got us derailed\n");
+		}
+		return fv2;
+	}
+	
+	// shouldn't get here, but let's try and fail gracefully
+	if( (fv0 == fv1) || (fv0 == fv2) )
+		return fv0;
+	else if( (fv1 == fv0) || (fv1 == fv2) )
+		return fv1;
+	else if( (fv2 == fv0) || (fv2 == fv1) )
+		return fv2;
+	else
+		return -1;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// IsMarked()
+//
+// If either the faceInfo has a real strip index because it is
+// already assign to a committed strip OR it is assigned in an
+// experiment and the experiment index is the one we are building
+// for, then it is marked and unavailable
+inline bool NvStripInfo::IsMarked(NvFaceInfo *faceInfo){
+	return (faceInfo->m_stripId >= 0) || (IsExperiment() && faceInfo->m_experimentId == m_experimentId);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// MarkTriangle()
+//
+// Marks the face with the current strip ID
+//
+inline void NvStripInfo::MarkTriangle(NvFaceInfo *faceInfo){
+	assert(!IsMarked(faceInfo));
+	if (IsExperiment()){
+		faceInfo->m_experimentId = m_experimentId;
+		faceInfo->m_testStripId  = m_stripId;
+    }
+	else{
+		assert(faceInfo->m_stripId == -1);
+		faceInfo->m_experimentId = -1;
+		faceInfo->m_stripId      = m_stripId;
+	}
+}
+
+
+bool NvStripInfo::Unique(NvFaceInfoVec& faceVec, NvFaceInfo* face)
+{
+	bool bv0, bv1, bv2; //bools to indicate whether a vertex is in the faceVec or not
+	bv0 = bv1 = bv2 = false;
+
+	for(int i = 0; i < faceVec.size(); i++)
+	{
+		if(!bv0)
+		{
+			if( (faceVec[i]->m_v0 == face->m_v0) || 
+				(faceVec[i]->m_v1 == face->m_v0) ||
+				(faceVec[i]->m_v2 == face->m_v0) )
+				bv0 = true;
+		}
+
+		if(!bv1)
+		{
+			if( (faceVec[i]->m_v0 == face->m_v1) || 
+				(faceVec[i]->m_v1 == face->m_v1) ||
+				(faceVec[i]->m_v2 == face->m_v1) )
+				bv1 = true;
+		}
+
+		if(!bv2)
+		{
+			if( (faceVec[i]->m_v0 == face->m_v2) || 
+				(faceVec[i]->m_v1 == face->m_v2) ||
+				(faceVec[i]->m_v2 == face->m_v2) )
+				bv2 = true;
+		}
+
+		//the face is not unique, all it's vertices exist in the face vector
+		if(bv0 && bv1 && bv2)
+			return false;
+	}
+	
+	//if we get out here, it's unique
+	return true;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// Build()
+//
+// Builds a strip forward as far as we can go, then builds backwards, and joins the two lists
+//
+void NvStripInfo::Build(NvEdgeInfoVec &edgeInfos, NvFaceInfoVec &faceInfos)
+{
+	// used in building the strips forward and backward
+	WordVec scratchIndices;
+	
+	// build forward... start with the initial face
+	NvFaceInfoVec forwardFaces, backwardFaces;
+	forwardFaces.push_back(m_startInfo.m_startFace);
+
+	MarkTriangle(m_startInfo.m_startFace);
+	
+	int v0 = (m_startInfo.m_toV1 ? m_startInfo.m_startEdge->m_v0 : m_startInfo.m_startEdge->m_v1);
+	int v1 = (m_startInfo.m_toV1 ? m_startInfo.m_startEdge->m_v1 : m_startInfo.m_startEdge->m_v0);
+	
+	// easiest way to get v2 is to use this function which requires the
+	// other indices to already be in the list.
+	scratchIndices.push_back(v0);
+	scratchIndices.push_back(v1);
+	int v2 = NvStripifier::GetNextIndex(scratchIndices, m_startInfo.m_startFace);
+	scratchIndices.push_back(v2);
+
+	//
+	// build the forward list
+	//
+	int nv0 = v1;
+	int nv1 = v2;
+
+	NvFaceInfo *nextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, nv1, m_startInfo.m_startFace);
+	while (nextFace != NULL && !IsMarked(nextFace))
+	{
+		//check to see if this next face is going to cause us to die soon
+		int testnv0 = nv1;
+		int testnv1 = NvStripifier::GetNextIndex(scratchIndices, nextFace);
+		
+		NvFaceInfo* nextNextFace = NvStripifier::FindOtherFace(edgeInfos, testnv0, testnv1, nextFace);
+
+		if( (nextNextFace == NULL) || (IsMarked(nextNextFace)) )
+		{
+			//uh, oh, we're following a dead end, try swapping
+			NvFaceInfo* testNextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, testnv1, nextFace);
+
+			if( ((testNextFace != NULL) && !IsMarked(testNextFace)) )
+			{
+				//we only swap if it buys us something
+				
+				//add a "fake" degenerate face
+				NvFaceInfo* tempFace = new NvFaceInfo(nv0, nv1, nv0);
+				
+				forwardFaces.push_back(tempFace);
+				MarkTriangle(tempFace);
+
+				scratchIndices.push_back(nv0);
+				testnv0 = nv0;
+
+				++m_numDegenerates;
+			}
+
+		}
+
+		// add this to the strip
+		forwardFaces.push_back(nextFace);
+
+		MarkTriangle(nextFace);
+		
+		// add the index
+		//nv0 = nv1;
+		//nv1 = NvStripifier::GetNextIndex(scratchIndices, nextFace);
+		scratchIndices.push_back(testnv1);
+		
+		// and get the next face
+		nv0 = testnv0;
+		nv1 = testnv1;
+
+		nextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, nv1, nextFace);
+	
+	}
+	
+	// tempAllFaces is going to be forwardFaces + backwardFaces
+	// it's used for Unique()
+	NvFaceInfoVec tempAllFaces;
+	for(int i = 0; i < forwardFaces.size(); i++)
+		tempAllFaces.push_back(forwardFaces[i]);
+
+	//
+	// reset the indices for building the strip backwards and do so
+	//
+	scratchIndices.resize(0);
+	scratchIndices.push_back(v2);
+	scratchIndices.push_back(v1);
+	scratchIndices.push_back(v0);
+	nv0 = v1;
+	nv1 = v0;
+	nextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, nv1, m_startInfo.m_startFace);
+	while (nextFace != NULL && !IsMarked(nextFace))
+	{
+		//this tests to see if a face is "unique", meaning that its vertices aren't already in the list
+		// so, strips which "wrap-around" are not allowed
+		if(!Unique(tempAllFaces, nextFace))
+			break;
+
+		//check to see if this next face is going to cause us to die soon
+		int testnv0 = nv1;
+		int testnv1 = NvStripifier::GetNextIndex(scratchIndices, nextFace);
+		
+		NvFaceInfo* nextNextFace = NvStripifier::FindOtherFace(edgeInfos, testnv0, testnv1, nextFace);
+
+		if( (nextNextFace == NULL) || (IsMarked(nextNextFace)) )
+		{
+			//uh, oh, we're following a dead end, try swapping
+			NvFaceInfo* testNextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, testnv1, nextFace);
+			if( ((testNextFace != NULL) && !IsMarked(testNextFace)) )
+			{
+				//we only swap if it buys us something
+				
+				//add a "fake" degenerate face
+				NvFaceInfo* tempFace = new NvFaceInfo(nv0, nv1, nv0);
+
+				backwardFaces.push_back(tempFace);
+				MarkTriangle(tempFace);
+				scratchIndices.push_back(nv0);
+				testnv0 = nv0;
+
+				++m_numDegenerates;
+			}
+				
+		}
+
+		// add this to the strip
+		backwardFaces.push_back(nextFace);
+		
+		//this is just so Unique() will work
+		tempAllFaces.push_back(nextFace);
+
+		MarkTriangle(nextFace);
+		
+		// add the index
+		//nv0 = nv1;
+		//nv1 = NvStripifier::GetNextIndex(scratchIndices, nextFace);
+		scratchIndices.push_back(testnv1);
+		
+		// and get the next face
+		nv0 = testnv0;
+		nv1 = testnv1;
+		nextFace = NvStripifier::FindOtherFace(edgeInfos, nv0, nv1, nextFace);
+	}
+	
+	// Combine the forward and backwards stripification lists and put into our own face vector
+	Combine(forwardFaces, backwardFaces);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// Combine()
+//
+// Combines the two input face vectors and puts the result into m_faces
+//
+void NvStripInfo::Combine(const NvFaceInfoVec &forward, const NvFaceInfoVec &backward){
+	
+	// add backward faces
+	int numFaces = backward.size();
+	for (int i = numFaces - 1; i >= 0; i--)
+		m_faces.push_back(backward[i]);
+	
+	// add forward faces
+	numFaces = forward.size();
+	for (int i = 0; i < numFaces; i++)
+		m_faces.push_back(forward[i]);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// SharesEdge()
+//
+// Returns true if the input face and the current strip share an edge
+//
+bool NvStripInfo::SharesEdge(const NvFaceInfo* faceInfo, NvEdgeInfoVec &edgeInfos)
+{
+	//check v0->v1 edge
+	NvEdgeInfo* currEdge = NvStripifier::FindEdgeInfo(edgeInfos, faceInfo->m_v0, faceInfo->m_v1);
+	
+	if(IsInStrip(currEdge->m_face0) || IsInStrip(currEdge->m_face1))
+		return true;
+	
+	//check v1->v2 edge
+	currEdge = NvStripifier::FindEdgeInfo(edgeInfos, faceInfo->m_v1, faceInfo->m_v2);
+	
+	if(IsInStrip(currEdge->m_face0) || IsInStrip(currEdge->m_face1))
+		return true;
+	
+	//check v2->v0 edge
+	currEdge = NvStripifier::FindEdgeInfo(edgeInfos, faceInfo->m_v2, faceInfo->m_v0);
+	
+	if(IsInStrip(currEdge->m_face0) || IsInStrip(currEdge->m_face1))
+		return true;
+	
+	return false;
+	
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// CommitStrips()
+//
+// "Commits" the input strips by setting their m_experimentId to -1 and adding to the allStrips
+//  vector
+//
+void NvStripifier::CommitStrips(NvStripInfoVec &allStrips, const NvStripInfoVec &strips)
+{	
+	// Iterate through strips
+	int numStrips = strips.size();
+	for (int i = 0; i < numStrips; i++){
+
+		// Tell the strip that it is now real
+		NvStripInfo *strip = strips[i];
+		strip->m_experimentId = -1;
+		
+		// add to the list of real strips
+		allStrips.push_back(strip);
+		
+		// Iterate through the faces of the strip
+		// Tell the faces of the strip that they belong to a real strip now
+		const NvFaceInfoVec &faces = strips[i]->m_faces;
+		int numFaces = faces.size();
+
+		for (int j = 0; j < numFaces; j++)
+		{
+			strip->MarkTriangle(faces[j]);
+		}
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindTraversal()
+//
+// Finds the next face to start the next strip on.
+//
+bool NvStripifier::FindTraversal(NvFaceInfoVec &faceInfos,
+								 NvEdgeInfoVec    &edgeInfos,
+								 NvStripInfo      *strip,
+								 NvStripStartInfo &startInfo){
+	
+	// if the strip was v0->v1 on the edge, then v1 will be a vertex in the next edge.
+	int v = (strip->m_startInfo.m_toV1 ? strip->m_startInfo.m_startEdge->m_v1 : strip->m_startInfo.m_startEdge->m_v0);
+	
+	NvFaceInfo *untouchedFace = NULL;
+	NvEdgeInfo *edgeIter      = edgeInfos[v];
+	while (edgeIter != NULL){
+		NvFaceInfo *face0 = edgeIter->m_face0;
+		NvFaceInfo *face1 = edgeIter->m_face1;
+		if ((face0 != NULL && !strip->IsInStrip(face0)) && face1 != NULL && !strip->IsMarked(face1))
+		{
+			untouchedFace = face1;
+			break;
+		}
+		if ((face1 != NULL && !strip->IsInStrip(face1)) && face0 != NULL && !strip->IsMarked(face0)){
+			untouchedFace = face0;
+			break;
+		}
+		
+		// find the next edgeIter
+		edgeIter = (edgeIter->m_v0 == v ? edgeIter->m_nextV0 : edgeIter->m_nextV1);
+	}
+	
+	startInfo.m_startFace = untouchedFace;
+	startInfo.m_startEdge = edgeIter;
+	if (edgeIter != NULL)
+	{
+		if(strip->SharesEdge(startInfo.m_startFace, edgeInfos))
+			startInfo.m_toV1 = (edgeIter->m_v0 == v);  //note! used to be m_v1
+		else
+			startInfo.m_toV1 = (edgeIter->m_v1 == v);
+	}
+	return (startInfo.m_startFace != NULL);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////
+// RemoveSmallStrips()
+//
+// allStrips is the whole strip vector...all small strips will be deleted from this list, to avoid leaking mem
+// allBigStrips is an out parameter which will contain all strips above minStripLength
+// faceList is an out parameter which will contain all faces which were removed from the striplist
+//
+void NvStripifier::RemoveSmallStrips(NvStripInfoVec& allStrips, NvStripInfoVec& allBigStrips, NvFaceInfoVec& faceList)
+{
+	faceList.clear();
+	allBigStrips.clear();  //make sure these are empty
+	NvFaceInfoVec tempFaceList;
+	
+	for(int i = 0; i < allStrips.size(); i++)
+	{
+		if(allStrips[i]->m_faces.size() < minStripLength)
+		{
+			//strip is too small, add faces to faceList
+			for(int j = 0; j < allStrips[i]->m_faces.size(); j++)
+				tempFaceList.push_back(allStrips[i]->m_faces[j]);
+			
+			//and free memory
+			delete allStrips[i];
+		}
+		else
+		{
+			allBigStrips.push_back(allStrips[i]);
+		}
+	}
+	
+	bool *bVisitedList = new bool[tempFaceList.size()];
+	memset(bVisitedList, 0, tempFaceList.size()*sizeof(bool));
+	
+	VertexCache* vcache = new VertexCache(cacheSize);
+	
+	int bestNumHits = -1;
+	int numHits;
+	int bestIndex = 0;
+	
+	while(1)
+	{
+		bestNumHits = -1;
+		
+		//find best face to add next, given the current cache
+		for(int i = 0; i < tempFaceList.size(); i++)
+		{
+			if(bVisitedList[i])
+				continue;
+			
+			numHits = CalcNumHitsFace(vcache, tempFaceList[i]);
+			if(numHits > bestNumHits)
+			{
+				bestNumHits = numHits;
+				bestIndex = i;
+			}
+		}
+		
+		if(bestNumHits == -1.0f)
+			break;
+		bVisitedList[bestIndex] = true;
+		UpdateCacheFace(vcache, tempFaceList[bestIndex]);
+		faceList.push_back(tempFaceList[bestIndex]);
+	}
+	
+	delete vcache;
+	delete[] bVisitedList;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// NextIsCW()
+//
+// Returns true if the next face should be ordered in CW fashion
+//
+bool NvStripifier::NextIsCW(const int numIndices)
+{
+	return ((numIndices % 2) == 0);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// IsCW()
+//
+// Returns true if the face is ordered in CW fashion
+//
+bool NvStripifier::IsCW(NvFaceInfo *faceInfo, int v0, int v1)
+{
+	if (faceInfo->m_v0 == v0)
+		return (faceInfo->m_v1 == v1);
+	
+	else if (faceInfo->m_v1 == v0)
+		return (faceInfo->m_v2 == v1);
+	
+	else 
+		return (faceInfo->m_v0 == v1);
+	
+	// shouldn't get here
+	assert(0);
+	return false;
+}
+
+bool NvStripifier::FaceContainsIndex(const NvFaceInfo& face, const unsigned int index)
+{
+	return ( (face.m_v0 == (int)index) || (face.m_v1 == (int)index) || (face.m_v2 == (int)index) );
+}
+
+bool NvStripifier::IsMoneyFace(const NvFaceInfo& face)
+{
+	if(FaceContainsIndex(face, 800) &&
+	   FaceContainsIndex(face, 812) &&
+	   FaceContainsIndex(face, 731))
+	   return true;
+
+	return false;
+}
+				
+////////////////////////////////////////////////////////////////////////////////////////
+// CreateStrips()
+//
+// Generates actual strips from the list-in-strip-order.
+//
+void NvStripifier::CreateStrips(const NvStripInfoVec& allStrips, IntVec& stripIndices, 
+								const bool bStitchStrips, unsigned int& numSeparateStrips)
+{
+	assert(numSeparateStrips == 0);
+
+	NvFaceInfo tLastFace(0, 0, 0);
+	NvFaceInfo tPrevStripLastFace(0, 0, 0);
+	int nStripCount = allStrips.size();
+	assert(nStripCount > 0);
+
+	//we infer the cw/ccw ordering depending on the number of indices
+	//this is screwed up by the fact that we insert -1s to denote changing strips
+	//this is to account for that
+	int accountForNegatives = 0;
+
+	for (int i = 0; i < nStripCount; i++)
+	{
+		NvStripInfo *strip = allStrips[i];
+		int nStripFaceCount = strip->m_faces.size();
+		assert(nStripFaceCount > 0);
+
+		// Handle the first face in the strip
+		{
+			NvFaceInfo tFirstFace(strip->m_faces[0]->m_v0, strip->m_faces[0]->m_v1, strip->m_faces[0]->m_v2);
+
+			// If there is a second face, reorder vertices such that the
+			// unique vertex is first
+			if (nStripFaceCount > 1)
+			{
+				int nUnique = NvStripifier::GetUniqueVertexInB(strip->m_faces[1], &tFirstFace);
+				if (nUnique == tFirstFace.m_v1)
+				{
+					SWAP(tFirstFace.m_v0, tFirstFace.m_v1);
+				}
+				else if (nUnique == tFirstFace.m_v2)
+				{
+					SWAP(tFirstFace.m_v0, tFirstFace.m_v2);
+				}
+
+				// If there is a third face, reorder vertices such that the
+				// shared vertex is last
+				if (nStripFaceCount > 2)
+				{
+					if(IsDegenerate(strip->m_faces[1]))
+					{
+						int pivot = strip->m_faces[1]->m_v1;
+						if(tFirstFace.m_v1 == pivot)
+						{
+							SWAP(tFirstFace.m_v1, tFirstFace.m_v2);
+						}
+					}
+					else
+					{
+						int nShared0, nShared1;
+						GetSharedVertices(strip->m_faces[2], &tFirstFace, &nShared0, &nShared1);
+						if ( (nShared0 == tFirstFace.m_v1) && (nShared1 == -1) )
+						{
+							SWAP(tFirstFace.m_v1, tFirstFace.m_v2);
+						}
+					}
+				}
+			}
+
+			if( (i == 0) || !bStitchStrips)
+			{
+				if(!IsCW(strip->m_faces[0], tFirstFace.m_v0, tFirstFace.m_v1))
+					stripIndices.push_back(tFirstFace.m_v0);
+			}
+			else
+			{
+				// Double tap the first in the new strip
+				stripIndices.push_back(tFirstFace.m_v0);
+	
+				// Check CW/CCW ordering
+				if (NextIsCW(stripIndices.size() - accountForNegatives) != IsCW(strip->m_faces[0], tFirstFace.m_v0, tFirstFace.m_v1))
+				{
+					stripIndices.push_back(tFirstFace.m_v0);
+				}
+			}
+
+			stripIndices.push_back(tFirstFace.m_v0);
+			stripIndices.push_back(tFirstFace.m_v1);
+			stripIndices.push_back(tFirstFace.m_v2);
+
+			// Update last face info
+			tLastFace = tFirstFace;
+		}
+
+		for (int j = 1; j < nStripFaceCount; j++)
+		{
+			int nUnique = GetUniqueVertexInB(&tLastFace, strip->m_faces[j]);
+			if (nUnique != -1)
+			{
+				stripIndices.push_back(nUnique);
+
+				// Update last face info
+				tLastFace.m_v0 = tLastFace.m_v1;
+				tLastFace.m_v1 = tLastFace.m_v2;
+				tLastFace.m_v2 = nUnique;
+			}
+			else
+			{
+				//we've hit a degenerate
+				stripIndices.push_back(strip->m_faces[j]->m_v2);
+				tLastFace.m_v0 = strip->m_faces[j]->m_v0;//tLastFace.m_v1;
+				tLastFace.m_v1 = strip->m_faces[j]->m_v1;//tLastFace.m_v2;
+				tLastFace.m_v2 = strip->m_faces[j]->m_v2;//tLastFace.m_v1;
+
+			}
+		}
+
+		// Double tap between strips.
+		if(bStitchStrips)
+		{
+			if(i != nStripCount - 1)
+				stripIndices.push_back(tLastFace.m_v2);
+		}
+		else
+		{
+			//-1 index indicates next strip
+			stripIndices.push_back(-1);
+			accountForNegatives++;
+			numSeparateStrips++;
+		}
+
+		// Update last face info
+		tLastFace.m_v0 = tLastFace.m_v1;
+		tLastFace.m_v1 = tLastFace.m_v2;
+		tLastFace.m_v2 = tLastFace.m_v2;
+	}
+	
+	if(bStitchStrips)
+		numSeparateStrips = 1;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// Stripify()
+//
+//
+// in_indices are the input indices of the mesh to stripify
+// in_cacheSize is the target cache size 
+//
+void NvStripifier::Stripify(const WordVec &in_indices, const int in_cacheSize, 
+							const int in_minStripLength, const unsigned short maxIndex, 
+							NvStripInfoVec &outStrips, NvFaceInfoVec& outFaceList)
+{
+	meshJump = 0.0f;
+	bFirstTimeResetPoint = true; //used in FindGoodResetPoint()
+
+	//the number of times to run the experiments
+	int numSamples = 10;
+	
+	//the cache size, clamped to one
+	cacheSize = max(1, in_cacheSize - CACHE_INEFFICIENCY);
+	
+	minStripLength = in_minStripLength;  //this is the strip size threshold below which we dump the strip into a list
+	
+	indices = in_indices;
+	
+	// build the stripification info
+	NvFaceInfoVec allFaceInfos;
+	NvEdgeInfoVec allEdgeInfos;
+	
+	BuildStripifyInfo(allFaceInfos, allEdgeInfos, maxIndex);
+	
+	NvStripInfoVec allStrips;
+
+	// stripify
+	FindAllStrips(allStrips, allFaceInfos, allEdgeInfos, numSamples);
+	
+	//split up the strips into cache friendly pieces, optimize them, then dump these into outStrips
+	SplitUpStripsAndOptimize(allStrips, outStrips, allEdgeInfos, outFaceList);
+
+	//clean up
+	for(int i = 0; i < allStrips.size(); i++)
+	{
+		delete allStrips[i];
+	}
+	
+	for (int i = 0; i < allEdgeInfos.size(); i++)
+	{
+		NvEdgeInfo *info = allEdgeInfos[i];
+		while (info != NULL)
+		{
+			NvEdgeInfo *next = (info->m_v0 == i ? info->m_nextV0 : info->m_nextV1);
+			info->Unref();
+			info = next;
+		}
+	}
+	
+}
+
+
+bool NvStripifier::IsDegenerate(const NvFaceInfo* face)
+{
+	if(face->m_v0 == face->m_v1)
+		return true;
+	else if(face->m_v0 == face->m_v2)
+		return true;
+	else if(face->m_v1 == face->m_v2)
+		return true;
+	else
+		return false;
+}
+
+bool NvStripifier::IsDegenerate(const unsigned short v0, const unsigned short v1, const unsigned short v2)
+{
+	if(v0 == v1)
+		return true;
+	else if(v0 == v2)
+		return true;
+	else if(v1 == v2)
+		return true;
+	else
+		return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// SplitUpStripsAndOptimize()
+//
+// Splits the input vector of strips (allBigStrips) into smaller, cache friendly pieces, then
+//  reorders these pieces to maximize cache hits
+// The final strips are output through outStrips
+//
+void NvStripifier::SplitUpStripsAndOptimize(NvStripInfoVec &allStrips, NvStripInfoVec &outStrips,
+                                            NvEdgeInfoVec& edgeInfos, NvFaceInfoVec& outFaceList)
+{
+	int threshold = cacheSize;
+	NvStripInfoVec tempStrips;
+	
+	//split up strips into threshold-sized pieces
+	for(int i = 0; i < allStrips.size(); i++)
+	{
+		NvStripInfo* currentStrip;
+		NvStripStartInfo startInfo(NULL, NULL, false);
+	
+		int actualStripSize = 0;
+		for(int j = 0; j < allStrips[i]->m_faces.size(); ++j)
+		{
+			if( !IsDegenerate(allStrips[i]->m_faces[j]) )
+				actualStripSize++;
+		}
+		
+		if(actualStripSize /*allStrips[i]->m_faces.size()*/ > threshold)
+		{
+			
+			int numTimes    = actualStripSize /*allStrips[i]->m_faces.size()*/ / threshold;
+			int numLeftover = actualStripSize /*allStrips[i]->m_faces.size()*/ % threshold;
+
+			int degenerateCount = 0;
+			int j = 0;
+			for(j; j < numTimes; j++)
+			{
+				currentStrip = new NvStripInfo(startInfo, 0, -1);
+				
+				int faceCtr = j*threshold + degenerateCount;
+				bool bFirstTime = true;
+				while(faceCtr < threshold+(j*threshold)+degenerateCount)
+				{
+					if(IsDegenerate(allStrips[i]->m_faces[faceCtr]))
+					{
+						degenerateCount++;
+						
+						//last time or first time through, no need for a degenerate
+						if( (((faceCtr + 1) != threshold+(j*threshold)+degenerateCount) ||
+							 ((j == numTimes - 1) && (numLeftover < 4) && (numLeftover > 0))) && 
+							 !bFirstTime)
+						{
+							currentStrip->m_faces.push_back(allStrips[i]->m_faces[faceCtr++]);
+						}
+						else
+							++faceCtr;
+					}
+					else
+					{
+						currentStrip->m_faces.push_back(allStrips[i]->m_faces[faceCtr++]);
+						bFirstTime = false;
+					}
+				}
+				/*
+				for(int faceCtr = j*threshold; faceCtr < threshold+(j*threshold); faceCtr++)
+				{
+					currentStrip->m_faces.push_back(allStrips[i]->m_faces[faceCtr]);
+				}
+				*/
+				///*
+				if(j == numTimes - 1) //last time through
+				{
+					if( (numLeftover < 4) && (numLeftover > 0) ) //way too small
+					{
+						//just add to last strip
+						int ctr = 0;
+						while(ctr < numLeftover)
+						{
+							if(!IsDegenerate(allStrips[i]->m_faces[faceCtr]))
+							{	
+								currentStrip->m_faces.push_back(allStrips[i]->m_faces[faceCtr++]);
+								++ctr;
+							}
+							else
+							{
+								currentStrip->m_faces.push_back(allStrips[i]->m_faces[faceCtr++]);
+								++degenerateCount;
+							}
+						}
+						numLeftover = 0;
+					}
+				}
+				//*/
+				tempStrips.push_back(currentStrip);
+			}
+			
+			int leftOff = j * threshold + degenerateCount;
+			
+			if(numLeftover != 0)
+			{
+				currentStrip = new NvStripInfo(startInfo, 0, -1);   
+				
+				int ctr = 0;
+				bool bFirstTime = true;
+				while(ctr < numLeftover)
+				{
+					if( !IsDegenerate(allStrips[i]->m_faces[leftOff]) )
+					{
+						ctr++;
+						bFirstTime = false;
+						currentStrip->m_faces.push_back(allStrips[i]->m_faces[leftOff++]);
+					}
+					else if(!bFirstTime)
+						currentStrip->m_faces.push_back(allStrips[i]->m_faces[leftOff++]);
+					else
+						leftOff++;
+				}
+				/*
+				for(int k = 0; k < numLeftover; k++)
+				{
+					currentStrip->m_faces.push_back(allStrips[i]->m_faces[leftOff++]);
+				}
+				*/
+				
+				tempStrips.push_back(currentStrip);
+			}
+		}
+		else
+		{
+			//we're not just doing a tempStrips.push_back(allBigStrips[i]) because
+			// this way we can delete allBigStrips later to free the memory
+			currentStrip = new NvStripInfo(startInfo, 0, -1);
+			
+			for(int j = 0; j < allStrips[i]->m_faces.size(); j++)
+				currentStrip->m_faces.push_back(allStrips[i]->m_faces[j]);
+			
+			tempStrips.push_back(currentStrip);
+		}
+	}
+
+	//add small strips to face list
+	NvStripInfoVec tempStrips2;
+	RemoveSmallStrips(tempStrips, tempStrips2, outFaceList);
+	
+	outStrips.clear();
+	//screw optimization for now
+//	for(i = 0; i < tempStrips.size(); ++i)
+//    outStrips.push_back(tempStrips[i]);
+	
+	if(tempStrips2.size() != 0)
+	{
+		//Optimize for the vertex cache
+		VertexCache* vcache = new VertexCache(cacheSize);
+		
+		float bestNumHits = -1.0f;
+		float numHits;
+		int bestIndex = 0;
+		
+		int firstIndex = 0;
+		float minCost = 10000.0f;
+		
+		for(int i = 0; i < tempStrips2.size(); i++)
+		{
+			int numNeighbors = 0;
+			
+			//find strip with least number of neighbors per face
+			for(int j = 0; j < tempStrips2[i]->m_faces.size(); j++)
+			{
+				numNeighbors += NumNeighbors(tempStrips2[i]->m_faces[j], edgeInfos);
+			}
+			
+			float currCost = (float)numNeighbors / (float)tempStrips2[i]->m_faces.size();
+			if(currCost < minCost)
+			{
+				minCost = currCost;
+				firstIndex = i;
+			}
+		}
+		
+		UpdateCacheStrip(vcache, tempStrips2[firstIndex]);
+		outStrips.push_back(tempStrips2[firstIndex]);
+		
+		tempStrips2[firstIndex]->visited = true;
+		
+		bool bWantsCW = (tempStrips2[firstIndex]->m_faces.size() % 2) == 0;
+
+		//this n^2 algo is what slows down stripification so much....
+		// needs to be improved
+		while(1)
+		{
+			bestNumHits = -1.0f;
+			
+			//find best strip to add next, given the current cache
+			for(int i = 0; i < tempStrips2.size(); i++)
+			{
+				if(tempStrips2[i]->visited)
+					continue;
+
+				numHits = CalcNumHitsStrip(vcache, tempStrips2[i]);
+				if(numHits > bestNumHits)
+				{
+					bestNumHits = numHits;
+					bestIndex = i;
+				}
+				else if(numHits >= bestNumHits)
+				{
+					//check previous strip to see if this one requires it to switch polarity
+					NvStripInfo *strip = tempStrips2[i];
+					int nStripFaceCount = strip->m_faces.size();
+					
+					NvFaceInfo tFirstFace(strip->m_faces[0]->m_v0, strip->m_faces[0]->m_v1, strip->m_faces[0]->m_v2);
+					
+					// If there is a second face, reorder vertices such that the
+					// unique vertex is first
+					if (nStripFaceCount > 1)
+					{
+						int nUnique = NvStripifier::GetUniqueVertexInB(strip->m_faces[1], &tFirstFace);
+						if (nUnique == tFirstFace.m_v1)
+						{
+							SWAP(tFirstFace.m_v0, tFirstFace.m_v1);
+						}
+						else if (nUnique == tFirstFace.m_v2)
+						{
+							SWAP(tFirstFace.m_v0, tFirstFace.m_v2);
+						}
+						
+						// If there is a third face, reorder vertices such that the
+						// shared vertex is last
+						if (nStripFaceCount > 2)
+						{
+							int nShared0, nShared1;
+							GetSharedVertices(strip->m_faces[2], &tFirstFace, &nShared0, &nShared1);
+							if ( (nShared0 == tFirstFace.m_v1) && (nShared1 == -1) )
+							{
+								SWAP(tFirstFace.m_v1, tFirstFace.m_v2);
+							}
+						}
+					}
+						
+					// Check CW/CCW ordering
+					if (bWantsCW == IsCW(strip->m_faces[0], tFirstFace.m_v0, tFirstFace.m_v1))
+					{
+						//I like this one!
+						bestIndex = i;
+					}
+				}
+			}
+			
+			if(bestNumHits == -1.0f)
+				break;
+			tempStrips2[bestIndex]->visited = true;
+			UpdateCacheStrip(vcache, tempStrips2[bestIndex]);
+			outStrips.push_back(tempStrips2[bestIndex]);
+			bWantsCW = (tempStrips2[bestIndex]->m_faces.size() % 2 == 0) ? bWantsCW : !bWantsCW;
+		}
+		
+		delete vcache;	
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// UpdateCacheStrip()
+//
+// Updates the input vertex cache with this strip's vertices
+//
+void NvStripifier::UpdateCacheStrip(VertexCache* vcache, NvStripInfo* strip)
+{
+	for(int i = 0; i < strip->m_faces.size(); ++i)
+	{
+		if(!vcache->InCache(strip->m_faces[i]->m_v0))
+			vcache->AddEntry(strip->m_faces[i]->m_v0);
+		
+		if(!vcache->InCache(strip->m_faces[i]->m_v1))
+			vcache->AddEntry(strip->m_faces[i]->m_v1);
+		
+		if(!vcache->InCache(strip->m_faces[i]->m_v2))
+			vcache->AddEntry(strip->m_faces[i]->m_v2);
+	}
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// UpdateCacheFace()
+//
+// Updates the input vertex cache with this face's vertices
+//
+void NvStripifier::UpdateCacheFace(VertexCache* vcache, NvFaceInfo* face)
+{
+	if(!vcache->InCache(face->m_v0))
+		vcache->AddEntry(face->m_v0);
+		
+	if(!vcache->InCache(face->m_v1))
+		vcache->AddEntry(face->m_v1);
+		
+	if(!vcache->InCache(face->m_v2))
+		vcache->AddEntry(face->m_v2);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// CalcNumHitsStrip()
+//
+// returns the number of cache hits per face in the strip
+//
+float NvStripifier::CalcNumHitsStrip(VertexCache* vcache, NvStripInfo* strip)
+{
+	int numHits = 0;
+	int numFaces = 0;
+	
+	for(int i = 0; i < strip->m_faces.size(); i++)
+	{
+		if(vcache->InCache(strip->m_faces[i]->m_v0))
+			++numHits;
+		
+		if(vcache->InCache(strip->m_faces[i]->m_v1))
+			++numHits;
+		
+		if(vcache->InCache(strip->m_faces[i]->m_v2))
+			++numHits;
+		
+		numFaces++;
+	}
+	
+	return ((float)numHits / (float)numFaces);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// CalcNumHitsFace()
+//
+// returns the number of cache hits in the face
+//
+int NvStripifier::CalcNumHitsFace(VertexCache* vcache, NvFaceInfo* face)
+{
+	int numHits = 0;
+
+	if(vcache->InCache(face->m_v0))
+		numHits++;
+		
+	if(vcache->InCache(face->m_v1))
+		numHits++;
+		
+	if(vcache->InCache(face->m_v2))
+		numHits++;
+		
+	return numHits;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// NumNeighbors()
+//
+// Returns the number of neighbors that this face has
+//
+int NvStripifier::NumNeighbors(NvFaceInfo* face, NvEdgeInfoVec& edgeInfoVec)
+{
+	int numNeighbors = 0;
+	
+	if(FindOtherFace(edgeInfoVec, face->m_v0, face->m_v1, face) != NULL)
+	{
+		numNeighbors++;
+	}
+	
+	if(FindOtherFace(edgeInfoVec, face->m_v1, face->m_v2, face) != NULL)
+	{
+		numNeighbors++;
+	}
+	
+	if(FindOtherFace(edgeInfoVec, face->m_v2, face->m_v0, face) != NULL)
+	{
+		numNeighbors++;
+	}
+	
+	return numNeighbors;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// AvgStripSize()
+//
+// Finds the average strip size of the input vector of strips
+//
+float NvStripifier::AvgStripSize(const NvStripInfoVec &strips){
+	int sizeAccum = 0;
+	int numStrips = strips.size();
+	for (int i = 0; i < numStrips; i++){
+		NvStripInfo *strip = strips[i];
+		sizeAccum += strip->m_faces.size();
+		sizeAccum -= strip->m_numDegenerates;
+	}
+	return ((float)sizeAccum) / ((float)numStrips);
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// FindAllStrips()
+//
+// Does the stripification, puts output strips into vector allStrips
+//
+// Works by setting runnning a number of experiments in different areas of the mesh, and
+//  accepting the one which results in the longest strips.  It then accepts this, and moves
+//  on to a different area of the mesh.  We try to jump around the mesh some, to ensure that
+//  large open spans of strips get generated.
+//
+void NvStripifier::FindAllStrips(NvStripInfoVec &allStrips,
+								 NvFaceInfoVec &allFaceInfos,
+								 NvEdgeInfoVec &allEdgeInfos,
+								 int numSamples){
+	// the experiments
+	int experimentId = 0;
+	int stripId      = 0;
+	bool done        = false;
+
+	int loopCtr = 0;
+	
+	while (!done)
+	{
+		loopCtr++;
+		
+		//
+		// PHASE 1: Set up numSamples * numEdges experiments
+		//
+		NvStripInfoVec *experiments = new NvStripInfoVec [numSamples * 6];
+		int experimentIndex = 0;
+		std::set   <NvFaceInfo*>  resetPoints;
+		for (int i = 0; i < numSamples; i++)
+		{
+			
+			// Try to find another good reset point.
+			// If there are none to be found, we are done
+			NvFaceInfo *nextFace = FindGoodResetPoint(allFaceInfos, allEdgeInfos);
+			if (nextFace == NULL){
+				done = true;
+				break;
+			}
+			// If we have already evaluated starting at this face in this slew
+			// of experiments, then skip going any further
+			else if (resetPoints.find(nextFace) != resetPoints.end()){
+				continue;
+			}
+			
+			// trying it now...
+			resetPoints.insert(nextFace);
+			
+			// otherwise, we shall now try experiments for starting on the 01,12, and 20 edges
+			assert(nextFace->m_stripId < 0);
+			
+			// build the strip off of this face's 0-1 edge
+			NvEdgeInfo *edge01 = FindEdgeInfo(allEdgeInfos, nextFace->m_v0, nextFace->m_v1);
+			NvStripInfo *strip01 = new NvStripInfo(NvStripStartInfo(nextFace, edge01, true), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip01);
+			
+			// build the strip off of this face's 1-0 edge
+			NvEdgeInfo *edge10 = FindEdgeInfo(allEdgeInfos, nextFace->m_v0, nextFace->m_v1);
+			NvStripInfo *strip10 = new NvStripInfo(NvStripStartInfo(nextFace, edge10, false), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip10);
+			
+			// build the strip off of this face's 1-2 edge
+			NvEdgeInfo *edge12 = FindEdgeInfo(allEdgeInfos, nextFace->m_v1, nextFace->m_v2);
+			NvStripInfo *strip12 = new NvStripInfo(NvStripStartInfo(nextFace, edge12, true), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip12);
+			
+			// build the strip off of this face's 2-1 edge
+			NvEdgeInfo *edge21 = FindEdgeInfo(allEdgeInfos, nextFace->m_v1, nextFace->m_v2);
+			NvStripInfo *strip21 = new NvStripInfo(NvStripStartInfo(nextFace, edge21, false), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip21);
+			
+			// build the strip off of this face's 2-0 edge
+			NvEdgeInfo *edge20 = FindEdgeInfo(allEdgeInfos, nextFace->m_v2, nextFace->m_v0);
+			NvStripInfo *strip20 = new NvStripInfo(NvStripStartInfo(nextFace, edge20, true), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip20);
+			
+			// build the strip off of this face's 0-2 edge
+			NvEdgeInfo *edge02 = FindEdgeInfo(allEdgeInfos, nextFace->m_v2, nextFace->m_v0);
+			NvStripInfo *strip02 = new NvStripInfo(NvStripStartInfo(nextFace, edge02, false), stripId++, experimentId++);
+			experiments[experimentIndex++].push_back(strip02);
+		}
+		
+		//
+		// PHASE 2: Iterate through that we setup in the last phase
+		// and really build each of the strips and strips that follow to see how
+		// far we get
+		//
+		int numExperiments = experimentIndex;
+		for (int i = 0; i < numExperiments; i++){
+			
+			// get the strip set
+			
+			// build the first strip of the list
+			experiments[i][0]->Build(allEdgeInfos, allFaceInfos);
+			int experimentId = experiments[i][0]->m_experimentId;
+			
+			NvStripInfo *stripIter = experiments[i][0];
+			NvStripStartInfo startInfo(NULL, NULL, false);
+			while (FindTraversal(allFaceInfos, allEdgeInfos, stripIter, startInfo)){
+				
+				// create the new strip info
+				stripIter = new NvStripInfo(startInfo, stripId++, experimentId);
+				
+				// build the next strip
+				stripIter->Build(allEdgeInfos, allFaceInfos);
+				
+				// add it to the list
+				experiments[i].push_back(stripIter);
+			}
+		}
+		
+		//
+		// Phase 3: Find the experiment that has the most promise
+		//
+		int bestIndex = 0;
+		double bestValue = 0;
+		for (int i = 0; i < numExperiments; i++)
+		{
+			const float avgStripSizeWeight = 1.0f;
+//			const float numTrisWeight      = 0.0f;
+			const float numStripsWeight    = 0.0f;
+			float avgStripSize = AvgStripSize(experiments[i]);
+			float numStrips    = (float) experiments[i].size();
+			float value        = avgStripSize * avgStripSizeWeight + (numStrips * numStripsWeight);
+			//float value = 1.f / numStrips;
+			//float value = numStrips * avgStripSize;
+				
+			if (value > bestValue)
+			{
+				bestValue = value;
+				bestIndex = i;
+			}
+		}
+		
+		//
+		// Phase 4: commit the best experiment of the bunch
+		//
+		CommitStrips(allStrips, experiments[bestIndex]);
+		
+		// and destroy all of the others
+		for (int i = 0; i < numExperiments; i++)
+		{
+			if (i != bestIndex)
+			{
+				int numStrips = experiments[i].size();
+				for (int j = 0; j < numStrips; j++)
+				{
+					delete experiments[i][j];
+				}
+			}
+		}
+		
+		// delete the array that we used for all experiments
+		delete [] experiments;
+  }
+}
+
+
+///////////////////////////////////////////////////////////////////////////////////////////
+// CountRemainingTris()
+//
+// This will count the number of triangles left in the
+// strip list starting at iter and finishing up at end
+//
+int NvStripifier::CountRemainingTris(std::list<NvStripInfo*>::iterator iter,
+											std::list<NvStripInfo*>::iterator  end){
+	int count = 0;
+	while (iter != end){
+		count += (*iter)->m_faces.size();
+		iter++;
+	}
+	return count;
+}
+