mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-11-05 23:09:04 +00:00
541 lines
13 KiB
C++
541 lines
13 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as
|
|
// published by the Free Software Foundation, either version 3 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include "surface_splitter.h"
|
|
|
|
using namespace std;
|
|
using namespace NLMISC;
|
|
using namespace NLPACS;
|
|
|
|
// -----------------------
|
|
//
|
|
|
|
// Constructor
|
|
CSurfaceSplitter::CSurfaceSplitter()
|
|
{
|
|
}
|
|
|
|
|
|
//
|
|
void CSurfaceSplitter::build(CLocalRetriever &lr)
|
|
{
|
|
nlinfo("--- Build SurfaceSplitter...");
|
|
nlinfo("------------------------------------------");
|
|
uint i;
|
|
|
|
initEdgeGrid();
|
|
|
|
_NumChains = 0;
|
|
_NumSurfaces = 0;
|
|
_NumTips = 0;
|
|
|
|
for (i=0; i<lr.getChains().size(); ++i)
|
|
buildChain(lr, i);
|
|
|
|
for (i=0; i<lr.getSurfaces().size(); ++i)
|
|
buildSurface(lr, i);
|
|
|
|
nlinfo("converted %d chains & %d surfaces", lr.getChains().size(), lr.getSurfaces().size());
|
|
_NumSurfaces = (uint)lr.getSurfaces().size();
|
|
_NumChains = (uint)lr.getChains().size();
|
|
|
|
//splitChains();
|
|
|
|
dump();
|
|
|
|
nlinfo("------------------------------------------");
|
|
}
|
|
|
|
//
|
|
void CSurfaceSplitter::buildChain(CLocalRetriever &lr, uint chain)
|
|
{
|
|
const NLPACS::CChain &pacsChain = lr.getChain(chain);
|
|
|
|
CSurfaceId left = pacsChain.getLeft() >= 0 ? CSurfaceId(0, (uint16)pacsChain.getLeft()) : CSurfaceId();
|
|
CSurfaceId right = pacsChain.getRight() >= 0 ? CSurfaceId(0, (uint16)pacsChain.getRight()) : CSurfaceId();
|
|
vector<CVector2s64> vertices;
|
|
|
|
uint i;
|
|
// walk through all subchains
|
|
for (i=0; i<pacsChain.getSubChains().size(); ++i)
|
|
{
|
|
uint ochain = pacsChain.getSubChain(i);
|
|
const NLPACS::COrderedChain &pacsOChain = lr.getOrderedChain(ochain);
|
|
|
|
sint j;
|
|
// walk through subchain, forward or backward
|
|
if (pacsOChain.isForward())
|
|
{
|
|
for (j=0; j<(sint)pacsOChain.getVertices().size()-1; ++j)
|
|
vertices.push_back(CVector2s64(pacsOChain[j]));
|
|
}
|
|
else
|
|
{
|
|
for (j=(sint)pacsOChain.getVertices().size()-1; j>0; --j)
|
|
vertices.push_back(CVector2s64(pacsOChain[j]));
|
|
}
|
|
|
|
// add final chain point
|
|
if (i == pacsChain.getSubChains().size()-1)
|
|
vertices.push_back(CVector2s64(pacsOChain[j]));
|
|
}
|
|
|
|
addChain(left,right, vertices);
|
|
}
|
|
|
|
//
|
|
void CSurfaceSplitter::buildSurface(CLocalRetriever &lr, uint surface)
|
|
{
|
|
const NLPACS::CRetrievableSurface &pacsSurface = lr.getSurface(surface);
|
|
CSurface newSurface;
|
|
|
|
newSurface.Id = CSurfaceId(0, surface);
|
|
|
|
uint i;
|
|
// walk through all loops
|
|
for (i=0; i<pacsSurface.getLoops().size(); ++i)
|
|
{
|
|
const NLPACS::CRetrievableSurface::TLoop &pacsLoop = pacsSurface.getLoop(i);
|
|
newSurface.Loops.push_back(CSurfaceSplitter::CLoop());
|
|
newSurface.Loops.back().Surface = newSurface.Id;
|
|
|
|
uint j;
|
|
// walk through loop
|
|
for (j=0; j<pacsLoop.size(); ++j)
|
|
{
|
|
uint chainIndex = pacsLoop[j];
|
|
uint chain = pacsSurface.getChain(chainIndex).Chain;
|
|
|
|
newSurface.Loops.back().Chains.push_back(CChainId(chain));
|
|
}
|
|
}
|
|
|
|
_Surfaces.insert(make_pair(newSurface.Id, newSurface));
|
|
}
|
|
|
|
|
|
|
|
//
|
|
void CSurfaceSplitter::initEdgeGrid()
|
|
{
|
|
_Edges.create(256, 2.0f);
|
|
}
|
|
|
|
|
|
//
|
|
void CSurfaceSplitter::splitChains()
|
|
{
|
|
nlinfo("Split chains...");
|
|
|
|
uint numInters = 0;
|
|
uint i;
|
|
|
|
for (i=0; i<_NumChains; ++i)
|
|
{
|
|
TChainMap::iterator it = _Chains.find(CChainId(i));
|
|
if (it != _Chains.end())
|
|
splitChain(it, numInters);
|
|
}
|
|
|
|
nlinfo("%d intersections found", numInters);
|
|
}
|
|
|
|
//
|
|
void CSurfaceSplitter::splitChain(TChainMap::iterator it, uint &numInters)
|
|
{
|
|
CChain &chain = (*it).second;
|
|
|
|
if (chain.DontSplit)
|
|
return;
|
|
|
|
uint edge;
|
|
// for each edge of the chain, test for other edges collision
|
|
for (edge=0; edge<chain.Vertices.size()-1; ++edge)
|
|
{
|
|
CVector p0 = chain.Vertices[edge].asVector();
|
|
CVector p1 = chain.Vertices[edge+1].asVector();
|
|
CVector pmin, pmax;
|
|
pmin.minof(p0, p1);
|
|
pmax.maxof(p0, p1);
|
|
|
|
_Edges.select(pmin, pmax);
|
|
|
|
CFixed64 closerDist(10.0);
|
|
bool collisionFound = false;
|
|
CEdgeId collidingEdge;
|
|
CVector2s64 collision;
|
|
|
|
TEdgeGrid::CIterator it;
|
|
for (it=_Edges.begin(); it!=_Edges.end(); ++it)
|
|
{
|
|
CEdgeId iedge = *it;
|
|
|
|
//
|
|
if (chain.Id == iedge.Chain && (edge == iedge.Edge || edge+1 == iedge.Edge || edge-1 == iedge.Edge))
|
|
continue;
|
|
|
|
CChain *ichain = getChain(iedge.Chain);
|
|
|
|
if (ichain == NULL)
|
|
{
|
|
nlwarning("Couldn't find referenced chain %d", iedge.Chain.Id);
|
|
continue;
|
|
}
|
|
|
|
if (ichain->DontSplit)
|
|
continue;
|
|
|
|
CVector2s64 inters;
|
|
CFixed64 ndist;
|
|
|
|
if (intersect(chain.Vertices[edge], chain.Vertices[edge+1], ichain->Vertices[iedge.Edge], ichain->Vertices[iedge.Edge+1], inters, ndist))
|
|
{
|
|
if (inters != chain.Vertices[edge+1] || edge != chain.Vertices.size()-2)
|
|
{
|
|
++numInters;
|
|
nlinfo("Intersection: %d:%d[%.3f,%.3f-%.3f,%.3f]-%d:%d[%.3f,%.3f-%.3f,%.3f] : [%.3f,%.3f]", chain.Id.Id, edge, p0.x, p0.y, p1.x, p1.y, iedge.Chain.Id, iedge.Edge, ichain->Vertices[iedge.Edge].asVector().x, ichain->Vertices[iedge.Edge].asVector().y, ichain->Vertices[iedge.Edge+1].asVector().x, ichain->Vertices[iedge.Edge+1].asVector().y, inters.asVector().x, inters.asVector().y);
|
|
|
|
if (closerDist > ndist)
|
|
{
|
|
collisionFound = true;
|
|
collidingEdge = iedge;
|
|
collision = inters;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
nlinfo("Intersection: %d:%d[%.3f,%.3f-%.3f,%.3f]-%d:%d[%.3f,%.3f-%.3f,%.3f] : [%.3f,%.3f] -- SKIPPED", chain.Id.Id, edge, p0.x, p0.y, p1.x, p1.y, iedge.Chain.Id, iedge.Edge, ichain->Vertices[iedge.Edge].asVector().x, ichain->Vertices[iedge.Edge].asVector().y, ichain->Vertices[iedge.Edge+1].asVector().x, ichain->Vertices[iedge.Edge+1].asVector().y, inters.asVector().x, inters.asVector().y);
|
|
}
|
|
}
|
|
}
|
|
|
|
// split chain
|
|
if (collisionFound)
|
|
{
|
|
if (chain.Id == collidingEdge.Chain)
|
|
{
|
|
// self colliding chain
|
|
|
|
// check order
|
|
//nlassert(edge >= 0); // always true for unsigned
|
|
nlassert(edge < collidingEdge.Edge);
|
|
nlassert(collidingEdge.Edge < chain.Vertices.size()-1);
|
|
|
|
// must split the chain in 3 parts
|
|
uint e;
|
|
vector<CVector2s64> begin;
|
|
vector<CVector2s64> middle;
|
|
vector<CVector2s64> end;
|
|
vector<CChainId> v;
|
|
CChainId beginId;
|
|
CChainId middleId;
|
|
CChainId endId;
|
|
|
|
for (e=0; e<=edge; ++e)
|
|
begin.push_back(chain.Vertices[e]);
|
|
|
|
begin.push_back(collision);
|
|
|
|
if (collision != chain.Vertices[e])
|
|
middle.push_back(collision);
|
|
|
|
for (; e<=collidingEdge.Edge; ++e)
|
|
middle.push_back(chain.Vertices[e]);
|
|
|
|
middle.push_back(collision);
|
|
|
|
if (collision != chain.Vertices[e])
|
|
end.push_back(collision);
|
|
|
|
for (; e<chain.Vertices.size(); ++e)
|
|
end.push_back(chain.Vertices[e]);
|
|
|
|
beginId = addChain(chain.Left, chain.Right, begin, true);
|
|
middleId = addChain(chain.Left, chain.Right, middle);
|
|
endId = addChain(chain.Left, chain.Right, end);
|
|
|
|
v.push_back(beginId);
|
|
v.push_back(middleId);
|
|
v.push_back(endId);
|
|
|
|
replaceChain(chain.Id, v);
|
|
}
|
|
else
|
|
{
|
|
//nlassert(edge >= 0); // always true for unsigned
|
|
nlassert(edge < chain.Vertices.size()-1);
|
|
|
|
// split the chain
|
|
uint e;
|
|
vector<CVector2s64> begin;
|
|
vector<CVector2s64> end;
|
|
vector<CChainId> v;
|
|
CChainId beginId;
|
|
CChainId endId;
|
|
|
|
// split the first chain
|
|
for (e=0; e<=edge; ++e)
|
|
begin.push_back(chain.Vertices[e]);
|
|
|
|
begin.push_back(collision);
|
|
|
|
if (collision != chain.Vertices[e])
|
|
end.push_back(collision);
|
|
|
|
for (; e<chain.Vertices.size(); ++e)
|
|
end.push_back(chain.Vertices[e]);
|
|
|
|
beginId = addChain(chain.Left, chain.Right, begin, true);
|
|
endId = addChain(chain.Left, chain.Right, end);
|
|
|
|
v.push_back(beginId);
|
|
v.push_back(endId);
|
|
|
|
replaceChain(chain.Id, v);
|
|
|
|
// reset for second chain
|
|
begin.clear();
|
|
end.clear();
|
|
v.clear();
|
|
|
|
// split the second chain
|
|
CChain *collide = getChain(collidingEdge.Chain);
|
|
|
|
for (e=0; e<=collidingEdge.Edge; ++e)
|
|
begin.push_back(collide->Vertices[e]);
|
|
|
|
begin.push_back(collision);
|
|
|
|
if (collision != collide->Vertices[e])
|
|
end.push_back(collision);
|
|
|
|
for (; e<collide->Vertices.size(); ++e)
|
|
end.push_back(collide->Vertices[e]);
|
|
|
|
beginId = addChain(collide->Left, collide->Right, begin);
|
|
endId = addChain(collide->Left, collide->Right, end);
|
|
|
|
v.push_back(beginId);
|
|
v.push_back(endId);
|
|
|
|
replaceChain(collide->Id, v);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
bool CSurfaceSplitter::intersect(const CVector2s64 &v0, const CVector2s64 &v1,
|
|
const CVector2s64 &c0, const CVector2s64 &c1,
|
|
CVector2s64 &intersect,
|
|
CFixed64 &ndist)
|
|
{
|
|
if (v0 == c0 || v0 == c1)
|
|
return false;
|
|
|
|
if (v1 == c0 || v1 == c1)
|
|
{
|
|
intersect = v1;
|
|
ndist = CFixed64(1.0);
|
|
return true;
|
|
}
|
|
|
|
CVector2s64 nnc(c0.y-c1.y, c1.x-c0.x),
|
|
nnv(v0.y-v1.y, v1.x-v0.x);
|
|
|
|
CFixed64 dv = (v1-v0)*nnc;
|
|
|
|
// vectors are colinears ?
|
|
if ((sint64)dv == 0)
|
|
return false;
|
|
|
|
CFixed64 nv = (c0-v0)*nnc;
|
|
|
|
if ((sint64)dv < 0)
|
|
dv=-dv, nv=-nv;
|
|
// intersection outside main edge ? (or at first point ?)
|
|
if ((sint64)nv<=0 || nv>dv)
|
|
return false;
|
|
|
|
CFixed64 dc = (c1-c0)*(c1-c0);
|
|
// second edge null ?
|
|
if ((sint64)dc == 0)
|
|
return false;
|
|
|
|
CFixed64 lv = nv/dv;
|
|
|
|
if ((sint64)lv == 0)
|
|
return false;
|
|
|
|
CFixed64 nc = (v0-c0 + (v1-v0)*lv)*(c1-c0);
|
|
// intersection outside colliding edge ?
|
|
if ((sint64)nc<0 || nc>dc)
|
|
return false;
|
|
|
|
// treat each singular case
|
|
if (nv == dv)
|
|
intersect = v1;
|
|
else if ((sint64)nc == 0)
|
|
intersect = c0;
|
|
else if (nc == dc)
|
|
intersect = c1;
|
|
else
|
|
// compute intersecting point
|
|
intersect = v0 + (v1-v0)*lv;
|
|
|
|
ndist = lv;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
//
|
|
CSurfaceSplitter::CChainId CSurfaceSplitter::addChain(const CSurfaceId &left, const CSurfaceId &right, const vector<CVector2s64> &points, bool dontSplit)
|
|
{
|
|
pair<TChainMap::iterator, bool> res = _Chains.insert(make_pair(CChainId(_NumChains++), CChain()));
|
|
|
|
CChain &chain = (*(res.first)).second;
|
|
|
|
chain.Id = (*(res.first)).first;
|
|
chain.Left = left;
|
|
chain.Right = right;
|
|
|
|
uint i;
|
|
for (i=0; i<points.size()-1; ++i)
|
|
{
|
|
if (points[i] == points[i+1])
|
|
{
|
|
nlwarning("--- !! points are together !! ---");
|
|
nlstop;
|
|
}
|
|
}
|
|
|
|
chain.Vertices = points;
|
|
chain.DontSplit = dontSplit;
|
|
|
|
uint edge;
|
|
for (edge=0; edge<chain.Vertices.size()-1; ++edge)
|
|
{
|
|
CVector p0 = chain.Vertices[edge].asVector();
|
|
CVector p1 = chain.Vertices[edge+1].asVector();
|
|
|
|
p0.z = -100.0f;
|
|
p1.z = +100.0f;
|
|
|
|
CVector pmin, pmax;
|
|
pmin.minof(p0, p1);
|
|
pmax.maxof(p0, p1);
|
|
|
|
chain.Iterators.push_back(_Edges.insert(pmin, pmax, CEdgeId(chain.Id, edge)));
|
|
}
|
|
|
|
return chain.Id;
|
|
}
|
|
|
|
//
|
|
void CSurfaceSplitter::removeChain(CChainId chainId)
|
|
{
|
|
// get chain it
|
|
TChainMap::iterator it = _Chains.find(chainId);
|
|
|
|
if (it == _Chains.end())
|
|
return;
|
|
|
|
CChain &chain = (*it).second;
|
|
|
|
CSurface *surf;
|
|
|
|
if ((surf = getSurface(chain.Left)))
|
|
surf->removeChain(chainId);
|
|
|
|
if ((surf = getSurface(chain.Right)))
|
|
surf->removeChain(chainId);
|
|
}
|
|
|
|
//
|
|
void CSurfaceSplitter::replaceChain(CChainId chainId, const vector<CChainId> &chains)
|
|
{
|
|
// get chain it
|
|
TChainMap::iterator it = _Chains.find(chainId);
|
|
|
|
if ((it == _Chains.end()))
|
|
return;
|
|
|
|
CChain &chain = (*it).second;
|
|
|
|
CSurface *surf;
|
|
|
|
nlinfo("-- Replace --");
|
|
dumpChain(chainId);
|
|
nlinfo("-- By --");
|
|
uint c;
|
|
for (c=0; c<chains.size(); ++c)
|
|
dumpChain(chains[c]);
|
|
nlinfo("-- End Replace --");
|
|
|
|
if ((surf = getSurface(chain.Left)))
|
|
{
|
|
uint loop;
|
|
for (loop=0; loop<surf->Loops.size(); ++loop)
|
|
{
|
|
CLoop &ploop = surf->Loops[loop];
|
|
vector<CChainId>::iterator it;
|
|
for (it=ploop.Chains.begin(); it!=ploop.Chains.end(); ++it)
|
|
{
|
|
if (*it == chainId)
|
|
{
|
|
it = ploop.Chains.erase(it);
|
|
sint i;
|
|
for (i=(sint)chains.size()-1; i>=0; --i)
|
|
{
|
|
it = ploop.Chains.insert(it, chains[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((surf = getSurface(chain.Right)))
|
|
{
|
|
uint loop;
|
|
for (loop=0; loop<surf->Loops.size(); ++loop)
|
|
{
|
|
CLoop &ploop = surf->Loops[loop];
|
|
vector<CChainId>::iterator it;
|
|
for (it=ploop.Chains.begin(); it!=ploop.Chains.end(); ++it)
|
|
{
|
|
if (*it == chainId)
|
|
{
|
|
it = ploop.Chains.erase(it);
|
|
uint i;
|
|
for (i=0; i<chains.size(); ++i)
|
|
{
|
|
it = ploop.Chains.insert(it, chains[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint i;
|
|
for (i=0; i<chain.Iterators.size(); ++i)
|
|
_Edges.erase(chain.Iterators[i]);
|
|
|
|
_Chains.erase(it);
|
|
}
|