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Speedup for computenormals

This commit is contained in:
Federico Ponchio 2004-12-04 14:19:22 +00:00
parent 315340fd9b
commit e96b8ca53b
1 changed files with 41 additions and 3 deletions
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44
apps/nexus/nxsalgo.cpp
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@ -6,6 +6,7 @@
#include "nxsalgo.h"
#include "nexus.h"
#include "watch.h"
using namespace std;
using namespace nxs;
@ -36,13 +37,17 @@ void nxs::ComputeNormals(Nexus &nexus) {
}
Point3f zero(0.0f, 0.0f, 0.0f);
tmpb.Resize(tmpb_offset);
for(unsigned int i = 0; i < tmpb.Size(); i++)
tmpb[i] = zero;
tmpb.Flush();
//first step normals in the same patch.
cerr << "First Step\n";
Report report(nexus.index.size(), 5);
for(unsigned int p = 0; p < nexus.index.size(); p++) {
report.Step(p);
Patch &patch = nexus.GetPatch(p);
vector<Point3f> normals;
@ -90,9 +95,37 @@ void nxs::ComputeNormals(Nexus &nexus) {
memcpy(patch.Norm16Begin(), &*normals.begin(),
normals.size() * sizeof(Point3f));
}
Border border = nexus.GetBorder(p);
set<unsigned int> close;
map<unsigned int, map<unsigned short, Point3f> > bnorm;
for(unsigned int i = 0; i < border.Size(); i++) {
Link &link = border[i];
if(link.IsNull()) continue;
Point3f pt = normals[link.start_vert];
bnorm[p][link.start_vert] = pt;
bnorm[link.end_patch][link.end_vert] = pt;
}
map<unsigned int, map<unsigned short, Point3f> >::iterator k;
for(k = bnorm.begin(); k != bnorm.end(); k++) {
unsigned int patch = (*k).first;
Border border = nexus.GetBorder(patch);
unsigned int offset = tmpb_start[patch];
for(unsigned int i = 0; i < border.Size(); i++) {
Link &link = border[i];
assert(!link.IsNull());
//TODO not accurate
if((*k).second.count(link.start_vert))
tmpb[offset + i] = (*k).second[link.start_vert];
}
}
/* set<unsigned int> close;
for(unsigned int i = 0; i < border.Size(); i++) {
Link &link = border[i];
if(link.IsNull()) continue;
@ -118,11 +151,14 @@ void nxs::ComputeNormals(Nexus &nexus) {
tmpb.write(off + i, p);
// tmpb[off + i] += normals[link.end_vert];
}
}
}*/
}
//Second step unify normals across borders
cerr << "Second step\n";
report.Init(nexus.index.size());
for(unsigned int p = 0; p < nexus.index.size(); p++) {
report.Step(p);
Patch &patch = nexus.GetPatch(p);
Border border = nexus.GetBorder(p);
@ -131,7 +167,7 @@ void nxs::ComputeNormals(Nexus &nexus) {
if(link.IsNull()) continue;
unsigned int off = tmpb_start[p];
// Point3f &n = tmpb[off + i];
Point3f n = tmpb.read(off + i);
Point3f n = tmpb[off + i];
n.Normalize();
if(use_short) {
n *= 32766;
@ -145,6 +181,8 @@ void nxs::ComputeNormals(Nexus &nexus) {
}
}
}
tmpb.Close();
tmpb.Delete();
//TODO remove temporary file.
}