436 lines
15 KiB
C++
436 lines
15 KiB
C++
#include "SurfacePatch.h"
|
|
#include "Constants.h"
|
|
|
|
#include "SurfaceVertex.h"
|
|
#include "SurfaceTriangle.h"
|
|
#include "SurfaceEdge.h"
|
|
|
|
#include "OgreLogManager.h"
|
|
#include "OgreStringConverter.h"
|
|
|
|
#include <algorithm>
|
|
|
|
namespace Ogre
|
|
{
|
|
SurfacePatch::SurfacePatch()
|
|
{
|
|
m_listVertices.clear();
|
|
m_listTriangles.clear();
|
|
m_listEdges.clear();
|
|
}
|
|
|
|
SurfacePatch::~SurfacePatch()
|
|
{
|
|
}
|
|
|
|
SurfaceEdgeIterator SurfacePatch::getEdgesBegin(void)
|
|
{
|
|
return m_listEdges.begin();
|
|
}
|
|
|
|
SurfaceEdgeIterator SurfacePatch::getEdgesEnd(void)
|
|
{
|
|
return m_listEdges.end();
|
|
}
|
|
|
|
SurfaceTriangleIterator SurfacePatch::getTrianglesBegin(void)
|
|
{
|
|
return m_listTriangles.begin();
|
|
}
|
|
|
|
SurfaceTriangleIterator SurfacePatch::getTrianglesEnd(void)
|
|
{
|
|
return m_listTriangles.end();
|
|
}
|
|
|
|
SurfaceVertexIterator SurfacePatch::getVerticesBegin(void)
|
|
{
|
|
return m_listVertices.begin();
|
|
}
|
|
|
|
SurfaceVertexIterator SurfacePatch::getVerticesEnd(void)
|
|
{
|
|
return m_listVertices.end();
|
|
}
|
|
|
|
uint SurfacePatch::getNoOfEdges(void)
|
|
{
|
|
return m_listEdges.size();
|
|
}
|
|
|
|
uint SurfacePatch::getNoOfTriangles(void)
|
|
{
|
|
return m_listTriangles.size();
|
|
}
|
|
|
|
uint SurfacePatch::getNoOfVertices(void)
|
|
{
|
|
return m_listVertices.size();
|
|
}
|
|
|
|
void SurfacePatch::addTriangle(const SurfaceVertex& v0,const SurfaceVertex& v1,const SurfaceVertex& v2)
|
|
{
|
|
SurfaceVertexIterator v0Iter = findOrAddVertex(v0);
|
|
SurfaceVertexIterator v1Iter = findOrAddVertex(v1);
|
|
SurfaceVertexIterator v2Iter = findOrAddVertex(v2);
|
|
|
|
SurfaceEdgeIterator v0v1Iter = findOrAddEdge(v0Iter,v1Iter);
|
|
SurfaceEdgeIterator v1v2Iter = findOrAddEdge(v1Iter,v2Iter);
|
|
SurfaceEdgeIterator v2v0Iter = findOrAddEdge(v2Iter,v0Iter);
|
|
|
|
v0Iter->setEdge(v0v1Iter);
|
|
v1Iter->setEdge(v1v2Iter);
|
|
v2Iter->setEdge(v2v0Iter);
|
|
|
|
v0v1Iter->setNextHalfEdge(v1v2Iter);
|
|
v1v2Iter->setNextHalfEdge(v2v0Iter);
|
|
v2v0Iter->setNextHalfEdge(v0v1Iter);
|
|
|
|
v0v1Iter->setPreviousHalfEdge(v2v0Iter);
|
|
v1v2Iter->setPreviousHalfEdge(v0v1Iter);
|
|
v2v0Iter->setPreviousHalfEdge(v1v2Iter);
|
|
|
|
SurfaceTriangle triangle;
|
|
|
|
triangle.setEdge(v0v1Iter);
|
|
|
|
SurfaceTriangleIterator iterTriangle = m_listTriangles.insert(triangle).first;
|
|
|
|
v0v1Iter->setTriangle(iterTriangle);
|
|
v1v2Iter->setTriangle(iterTriangle);
|
|
v2v0Iter->setTriangle(iterTriangle);
|
|
}
|
|
|
|
SurfaceVertexIterator SurfacePatch::findOrAddVertex(const SurfaceVertex& vertex)
|
|
{
|
|
return m_listVertices.insert(vertex).first;
|
|
}
|
|
|
|
SurfaceEdgeIterator SurfacePatch::findEdge(const SurfaceVertexIterator& source, const SurfaceVertexIterator& target)
|
|
{
|
|
return m_listEdges.find(SurfaceEdge(target,source));
|
|
}
|
|
|
|
SurfaceEdgeIterator SurfacePatch::findOrAddEdge(const SurfaceVertexIterator& source, const SurfaceVertexIterator& target)
|
|
{
|
|
SurfaceEdge edge(target,source);
|
|
std::pair<SurfaceEdgeIterator, bool> insertionResult = m_listEdges.insert(edge);
|
|
|
|
if(insertionResult.second == false)
|
|
{
|
|
//Edge was already in there, so other edge is too.
|
|
return insertionResult.first;
|
|
}
|
|
SurfaceEdgeIterator edgeIter = insertionResult.first;
|
|
|
|
SurfaceEdge otherEdge(source, target);
|
|
SurfaceEdgeIterator otherEdgeIter = m_listEdges.insert(otherEdge).first;
|
|
|
|
edgeIter->pairWithOtherHalfEdge(otherEdgeIter);
|
|
otherEdgeIter->pairWithOtherHalfEdge(edgeIter);
|
|
|
|
return edgeIter;
|
|
}
|
|
|
|
void SurfacePatch::getVertexAndIndexData(std::vector<SurfaceVertex>& vertexData, std::vector<uint>& indexData)
|
|
{
|
|
vertexData.clear();
|
|
indexData.clear();
|
|
|
|
vertexData.resize(m_listVertices.size());
|
|
std::copy(m_listVertices.begin(), m_listVertices.end(), vertexData.begin());
|
|
|
|
/*LogManager::getSingleton().logMessage("----------Vertex Data----------");
|
|
for(std::vector<SurfaceVertex>::iterator vertexIter = vertexData.begin(); vertexIter != vertexData.end(); ++vertexIter)
|
|
{
|
|
LogManager::getSingleton().logMessage(StringConverter::toString(vertexIter->getPosition().x) + "," + StringConverter::toString(vertexIter->getPosition().y) + "," + StringConverter::toString(vertexIter->getPosition().z));
|
|
}
|
|
LogManager::getSingleton().logMessage("----------End Vertex Data----------");*/
|
|
|
|
for(SurfaceTriangleIterator iterTriangles = m_listTriangles.begin(); iterTriangles != m_listTriangles.end(); ++iterTriangles)
|
|
{
|
|
//LogManager::getSingleton().logMessage("Begin Triangle:");
|
|
std::vector<SurfaceVertex>::iterator iterVertex;
|
|
SurfaceEdgeIterator edgeIter;
|
|
|
|
edgeIter = iterTriangles->getEdge();
|
|
//LogManager::getSingleton().logMessage("Edge Target " + StringConverter::toString(edgeIter->target->position.x) + "," + StringConverter::toString(edgeIter->target->position.y) + "," + StringConverter::toString(edgeIter->target->position.z));
|
|
iterVertex = find(vertexData.begin(), vertexData.end(), *(edgeIter->getTarget()));
|
|
//LogManager::getSingleton().logMessage("");
|
|
//LogManager::getSingleton().logMessage(" " + StringConverter::toString(iterVertex->getPosition().x) + "," + StringConverter::toString(iterVertex->getPosition().y) + "," + StringConverter::toString(iterVertex->getPosition().z));
|
|
indexData.push_back(iterVertex - vertexData.begin());
|
|
|
|
edgeIter = edgeIter->getNextHalfEdge();
|
|
iterVertex = find(vertexData.begin(), vertexData.end(), *(edgeIter->getTarget()));
|
|
//LogManager::getSingleton().logMessage(" " + StringConverter::toString(iterVertex->getPosition().x) + "," + StringConverter::toString(iterVertex->getPosition().y) + "," + StringConverter::toString(iterVertex->getPosition().z));
|
|
indexData.push_back(iterVertex - vertexData.begin());
|
|
|
|
edgeIter = edgeIter->getNextHalfEdge();
|
|
iterVertex = find(vertexData.begin(), vertexData.end(), *(edgeIter->getTarget()));
|
|
//LogManager::getSingleton().logMessage(" " + StringConverter::toString(iterVertex->getPosition().x) + "," + StringConverter::toString(iterVertex->getPosition().y) + "," + StringConverter::toString(iterVertex->getPosition().z));
|
|
indexData.push_back(iterVertex - vertexData.begin());
|
|
|
|
//LogManager::getSingleton().logMessage("End Triangle");
|
|
}
|
|
}
|
|
|
|
bool SurfacePatch::canRemoveVertexFrom(SurfaceVertexIterator vertexIter, std::list<SurfaceVertexIterator> listConnectedIter, bool isEdge)
|
|
{
|
|
bool allXMatch = true;
|
|
bool allYMatch = true;
|
|
bool allZMatch = true;
|
|
bool allNormalsMatch = true;
|
|
bool twoEdgesMatch = true;
|
|
|
|
for(std::list<SurfaceVertexIterator>::iterator connectedIter = listConnectedIter.begin(); connectedIter != listConnectedIter.end(); ++connectedIter)
|
|
{
|
|
if((*connectedIter)->getPosition().x != vertexIter->getPosition().x)
|
|
{
|
|
allXMatch = false;
|
|
}
|
|
if((*connectedIter)->getPosition().y != vertexIter->getPosition().y)
|
|
{
|
|
allYMatch = false;
|
|
}
|
|
if((*connectedIter)->getPosition().z != vertexIter->getPosition().z)
|
|
{
|
|
allZMatch = false;
|
|
}
|
|
if((*connectedIter)->getNormal().dotProduct(vertexIter->getNormal()) < 0.99)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if(isEdge)
|
|
{
|
|
SurfaceVertexIterator firstExtreme = *(listConnectedIter.begin());
|
|
SurfaceVertexIterator secondExtreme = *(--listConnectedIter.end());
|
|
|
|
bool edgeXMatch = (firstExtreme->getPosition().x == vertexIter->getPosition().x) && (secondExtreme->getPosition().x == vertexIter->getPosition().x);
|
|
bool edgeYMatch = (firstExtreme->getPosition().y == vertexIter->getPosition().y) && (secondExtreme->getPosition().y == vertexIter->getPosition().y);
|
|
bool edgeZMatch = (firstExtreme->getPosition().z == vertexIter->getPosition().z) && (secondExtreme->getPosition().z == vertexIter->getPosition().z);
|
|
|
|
twoEdgesMatch = ((edgeXMatch&&edgeYMatch) || (edgeXMatch&&edgeZMatch) || (edgeYMatch&&edgeZMatch));
|
|
}
|
|
|
|
return (allXMatch || allYMatch || allZMatch)
|
|
&& (twoEdgesMatch);
|
|
}
|
|
|
|
std::list<SurfaceVertexIterator> SurfacePatch::findConnectedVertices(SurfaceVertexIterator vertexIter, bool& isEdge)
|
|
{
|
|
isEdge = false;
|
|
std::list<SurfaceVertexIterator> result;
|
|
//LogManager::getSingleton().logMessage("findConnectedVertices " + vertexIter->toString());
|
|
|
|
SurfaceEdgeIterator firstEdge = vertexIter->getEdge();
|
|
SurfaceEdgeIterator nextEdge = firstEdge;
|
|
SurfaceEdgeIterator previousEdge = firstEdge;
|
|
int ct = 0;
|
|
do
|
|
{
|
|
ct++;
|
|
//LogManager::getSingleton().logMessage("ct = " + StringConverter::toString(ct));
|
|
if(ct > 100)
|
|
{
|
|
LogManager::getSingleton().logMessage("ct too big!!! Aborting decimation");
|
|
exit(1);
|
|
}
|
|
|
|
result.push_back(nextEdge->getTarget());
|
|
|
|
previousEdge = nextEdge;
|
|
nextEdge = nextEdge->getPreviousHalfEdge()->getOtherHalfEdge();
|
|
}while((nextEdge != firstEdge) && (nextEdge != previousEdge));
|
|
|
|
if(nextEdge == previousEdge)
|
|
{
|
|
//LogManager::getSingleton().logMessage("Is edge");
|
|
//In this case vertexIter is on an edge/
|
|
|
|
isEdge = true;
|
|
|
|
nextEdge = firstEdge;
|
|
previousEdge = firstEdge;
|
|
|
|
previousEdge = nextEdge;
|
|
nextEdge = nextEdge->getOtherHalfEdge()->getNextHalfEdge();
|
|
|
|
int ct2 = 0;
|
|
do
|
|
{
|
|
ct2++;
|
|
//LogManager::getSingleton().logMessage("ct2 = " + StringConverter::toString(ct2));
|
|
if(ct2 > 100)
|
|
{
|
|
LogManager::getSingleton().logMessage("ct2 too big!!! Aborting decimation");
|
|
exit(1);
|
|
}
|
|
|
|
result.push_front(nextEdge->getTarget());
|
|
|
|
previousEdge = nextEdge;
|
|
nextEdge = nextEdge->getOtherHalfEdge()->getNextHalfEdge();
|
|
}while(nextEdge != previousEdge);
|
|
}
|
|
|
|
//LogManager::getSingleton().logMessage("Done find");
|
|
|
|
return result;
|
|
}
|
|
|
|
uint SurfacePatch::decimate(void)
|
|
{
|
|
uint uNoRemoved = 0;
|
|
//LogManager::getSingleton().logMessage("\n\nPerforming decimation");
|
|
//LogManager::getSingleton().logMessage("No of triangles at start = " + StringConverter::toString(m_listTriangles.size()));
|
|
//LogManager::getSingleton().logMessage("No of edges at start = " + StringConverter::toString(m_listEdges.size()));
|
|
//int fixed = 0;
|
|
//int movable = 0;
|
|
|
|
std::vector<SurfaceVertexIterator> listVertexIterators;
|
|
//listVertexIterators.resize(m_listVertices.size());
|
|
for(SurfaceVertexIterator vertexIter = m_listVertices.begin(); vertexIter != m_listVertices.end(); ++vertexIter)
|
|
{
|
|
listVertexIterators.push_back(vertexIter);
|
|
}
|
|
//random_shuffle(listVertexIterators.begin(),listVertexIterators.end());
|
|
|
|
for(std::vector<SurfaceVertexIterator>::iterator vertexIterIter = listVertexIterators.begin(); vertexIterIter != listVertexIterators.end(); ++vertexIterIter)
|
|
//for(SurfaceVertexIterator vertexIter = m_listVertices.begin(); vertexIter != m_listVertices.end(); ++vertexIter)
|
|
{
|
|
//LogManager::getSingleton().logMessage("Examining vertex " + vertexIter->toString());
|
|
|
|
SurfaceVertexIterator vertexIter = *vertexIterIter;
|
|
|
|
bool isEdge;
|
|
std::list<SurfaceVertexIterator> listConnectedVertices = findConnectedVertices(vertexIter,isEdge);
|
|
listConnectedVertices.remove(vertexIter);
|
|
listConnectedVertices.unique();
|
|
|
|
/*LogManager::getSingleton().logMessage("No of connected vertices = " + StringConverter::toString(listConnectedVertices.size()));
|
|
for(std::list<SurfaceVertexIterator>::iterator iter = listConnectedVertices.begin(); iter != listConnectedVertices.end(); ++iter)
|
|
{
|
|
LogManager::getSingleton().logMessage(" Connected vertex = " + (*iter)->toString());
|
|
}*/
|
|
|
|
if(canRemoveVertexFrom(vertexIter, listConnectedVertices, isEdge) == false)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if(isPolygonConvex(listConnectedVertices, vertexIter->getNormal()) == false)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
//LogManager::getSingleton().logMessage("Vertex can be removed");
|
|
|
|
//std::list<SurfaceEdgeIterator> edgesToRemove;
|
|
|
|
for(std::list<SurfaceVertexIterator>::iterator iter = listConnectedVertices.begin(); iter != listConnectedVertices.end(); ++iter)
|
|
{
|
|
SurfaceEdgeIterator edgeToDelete = findEdge(vertexIter, *iter);
|
|
/*if(edgeToDelete == m_listEdges.end())
|
|
{
|
|
LogManager::getSingleton().logMessage("Error - Failed to find");
|
|
}*/
|
|
SurfaceEdgeIterator otherEdgeToDelete = edgeToDelete->getOtherHalfEdge();
|
|
|
|
if(edgeToDelete->getNextHalfEdge() != edgeToDelete->getOtherHalfEdge())
|
|
{
|
|
m_listTriangles.erase(edgeToDelete->getTriangle());
|
|
}
|
|
|
|
//LogManager::getSingleton().logMessage("Removing edge " + edgeToDelete->toString());
|
|
m_listEdges.erase(edgeToDelete);
|
|
//LogManager::getSingleton().logMessage("Removing edge " + otherEdgeToDelete->toString());
|
|
m_listEdges.erase(otherEdgeToDelete);
|
|
//edgesToRemove.push_back(edgeToDelete);
|
|
//edgesToRemove.push_back(otherEdgeToDelete);
|
|
}
|
|
|
|
/*LogManager::getSingleton().logMessage("Now removing edges");
|
|
for(std::list<SurfaceEdgeIterator>::iterator iter = edgesToRemove.begin(); iter != edgesToRemove.end(); ++iter)
|
|
{
|
|
m_listEdges.erase(*iter);
|
|
}*/
|
|
|
|
//LogManager::getSingleton().logMessage("Removing vertex " + vertexIter->toString());
|
|
m_listVertices.erase(vertexIter);
|
|
|
|
//Now triangulate...
|
|
//LogManager::getSingleton().logMessage("Doing triangulation");
|
|
triangulate(listConnectedVertices);
|
|
|
|
++uNoRemoved;
|
|
//break;
|
|
}
|
|
|
|
//LogManager::getSingleton().logMessage("Fixed = " + StringConverter::toString(fixed) + " Movable = " + StringConverter::toString(movable));
|
|
//LogManager::getSingleton().logMessage("Done decimation");
|
|
//LogManager::getSingleton().logMessage("No of triangles at end = " + StringConverter::toString(m_listTriangles.size()));
|
|
|
|
/*std::vector<SurfaceVertex> vertexDataTemp;
|
|
std::vector<uint> indexDataTemp;
|
|
getVertexAndIndexData(vertexDataTemp, indexDataTemp);*/
|
|
|
|
return uNoRemoved;
|
|
}
|
|
|
|
void SurfacePatch::triangulate(std::list<SurfaceVertexIterator> listVertices)
|
|
{
|
|
std::list<SurfaceVertexIterator>::iterator v0IterIter = listVertices.begin();
|
|
std::list<SurfaceVertexIterator>::iterator v1IterIter = listVertices.begin();
|
|
std::list<SurfaceVertexIterator>::iterator v2IterIter = listVertices.begin();
|
|
++v1IterIter;
|
|
++v2IterIter;
|
|
++v2IterIter;
|
|
while(v2IterIter != listVertices.end())
|
|
{
|
|
SurfaceVertexIterator v0Iter = *v0IterIter;
|
|
SurfaceVertexIterator v1Iter = *v1IterIter;
|
|
SurfaceVertexIterator v2Iter = *v2IterIter;
|
|
|
|
addTriangle(*v0Iter, *v1Iter, *v2Iter);
|
|
|
|
++v1IterIter;
|
|
++v2IterIter;
|
|
}
|
|
}
|
|
|
|
bool SurfacePatch::isPolygonConvex(std::list<SurfaceVertexIterator> listVertices, Vector3 normal)
|
|
{
|
|
std::list<SurfaceVertexIterator>::iterator v0IterIter = listVertices.begin();
|
|
std::list<SurfaceVertexIterator>::iterator v1IterIter = listVertices.begin();
|
|
std::list<SurfaceVertexIterator>::iterator v2IterIter = listVertices.begin();
|
|
++v1IterIter;
|
|
++v2IterIter;
|
|
++v2IterIter;
|
|
while(v2IterIter != listVertices.end())
|
|
{
|
|
SurfaceVertexIterator v0Iter = *v0IterIter;
|
|
SurfaceVertexIterator v1Iter = *v1IterIter;
|
|
SurfaceVertexIterator v2Iter = *v2IterIter;
|
|
|
|
Vector3 v1tov0(v0Iter->getPosition().toOgreVector3() - v1Iter->getPosition().toOgreVector3());
|
|
Vector3 v1tov2(v2Iter->getPosition().toOgreVector3() - v1Iter->getPosition().toOgreVector3());
|
|
Vector3 cross = (v1tov2).crossProduct(v1tov0);
|
|
cross.normalise();
|
|
|
|
//LogManager::getSingleton().logMessage("Cross = " + StringConverter::toString(cross));
|
|
|
|
if(cross.dotProduct(normal) < 0.99)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
++v1IterIter;
|
|
++v2IterIter;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|