68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
|
#include <assert.h>
|
||
|
|
|
||
|
|
//These header are neede byt tristipper...
|
||
|
|
#include <list>
|
||
|
|
#include <vector>
|
||
|
|
#include <map>
|
||
|
|
|
||
|
|
#include "tristripper/tri_stripper.h"
|
||
|
|
using namespace triangle_stripper;
|
||
|
|
|
||
|
|
#include "strip.h"
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace nxs;
|
||
|
|
|
||
|
|
void nxs::ComputeTriStrip(unsigned short nfaces, unsigned short *faces,
|
||
|
|
vector<unsigned short> &strip) {
|
||
|
|
|
||
|
|
vector<unsigned int> index;
|
||
|
|
index.resize(nfaces*3);
|
||
|
|
|
||
|
|
for(int i = 0; i < nfaces*3; i++)
|
||
|
|
index[i] = faces[i];
|
||
|
|
|
||
|
|
int cache_size = 16;
|
||
|
|
tri_stripper stripper(index);
|
||
|
|
stripper.SetCacheSize(cache_size);
|
||
|
|
// = 0 will disable the cache optimizer
|
||
|
|
stripper.SetMinStripSize(0);
|
||
|
|
tri_stripper::primitives_vector primitives;
|
||
|
|
stripper.Strip(&primitives);
|
||
|
|
|
||
|
|
if(primitives.back().m_Indices.size() < 3)
|
||
|
|
primitives.pop_back();
|
||
|
|
|
||
|
|
//TODO do this when mounting strips together.
|
||
|
|
if(primitives.back().m_Type == tri_stripper::PT_Triangles) {
|
||
|
|
tri_stripper::primitives p;
|
||
|
|
p = primitives.back();
|
||
|
|
primitives.pop_back();
|
||
|
|
for(unsigned int i = 0; i < p.m_Indices.size(); i += 3) {
|
||
|
|
tri_stripper::primitives s;
|
||
|
|
s.m_Type = tri_stripper::PT_Triangle_Strip;
|
||
|
|
s.m_Indices.push_back(p.m_Indices[i]);
|
||
|
|
s.m_Indices.push_back(p.m_Indices[i+1]);
|
||
|
|
s.m_Indices.push_back(p.m_Indices[i+2]);
|
||
|
|
primitives.push_back(s);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for(unsigned int i = 0; i < primitives.size(); i++) {
|
||
|
|
tri_stripper::primitives &primitive = primitives[i];
|
||
|
|
assert(primitive.m_Indices.size() != 0);
|
||
|
|
int len = primitive.m_Indices.size();
|
||
|
|
for(int l = 0; l < len; l++)
|
||
|
|
strip.push_back(primitive.m_Indices[l]);
|
||
|
|
|
||
|
|
|
||
|
|
if(i < primitives.size()-1) { //not the last primitive.
|
||
|
|
strip.push_back(primitive.m_Indices[len-1]);
|
||
|
|
//TODO optimize this!
|
||
|
|
if((len%2) == 1) //do not change orientation....
|
||
|
|
strip.push_back(primitive.m_Indices[len-1]);
|
||
|
|
strip.push_back(primitives[i+1].m_Indices[0]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|