manolas
/
vcglib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Backup (working on it).

This commit is contained in:
Federico Ponchio 2004-04-07 12:46:30 +00:00
parent e5aef23c44
commit b8c4c536c5
3 changed files with 345 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

164
wrap/bmt/bmt.cpp Normal file
View File

@ -0,0 +1,164 @@
#include <wrap/bmt/bmt.h>
using namespace std;
using namespace vcg;
Bmt::Bmt(): fp(NULL) {}
Bmt::~Bmt() {}
bool Bmt::Load(const std::string &filename) {
fp = fopen(filename.c_str(), "rb");
if(!fp) return false;
unsigned int magic;
fread(&magic, sizeof(unsigned int), 1, fp);
if(magic != 0x62647421) //bmt!
return false;
//signature
fread(&signature, sizeof(unsigned int), 1, fp);
//sphere
fread(&sphere, sizeof(Sphere3f), 1, fp);
//index and history offsets and size;
fread(&index_offset, sizeof(unsigned int), 1, fp);
fread(&index_size, sizeof(unsigned int), 1, fp);
fread(&history_offset, sizeof(unsigned int), 1, fp);
fread(&history_size, sizeof(unsigned int), 1, fp);
//index
index.resize(index_size);
fread(&index[0], sizeof(Bmt::Cell), index.size(), fp);
//history
history.resize(history_size);
for(unsigned int i = 0; i < history.size(); i++) {
vector<Bmt::Cell *> &created = history[i].created;
vector<Bmt::Cell *> &erased = history[i].erased;
unsigned int created_size;
fread(&created_size, sizeof(unsigned int), 1, fp);
created.resize(created_size);
fread(&*created.begin(), sizeof(unsigned int), created.size(), fp);
for(unsigned int k = 0; k < created_size; k++)
created[k] = &(index[(unsigned int)created[k]]);
unsigned int erased_size;
fread(&erased_size, sizeof(unsigned int), 1, fp);
erased.resize(erased_size);
fread(&*erased.begin(), sizeof(unsigned int), erased.size(), fp);
for(unsigned int k = 0; k < erased_size; k++)
erased[k] = &(index[(unsigned int)erased[k]]);
}
return true;
}
char *Bmt::GetData(unsigned int &size, unsigned int offset) {
fseek(fp, offset, SEEK_SET);
fread(&size, sizeof(unsigned int), 1, fp);
assert(size < 64000);
char *data = new char[size];
fread(data, 1, size, fp);
return data;
}
/*unsigned int &Bmt::IndexOffset();
unsigned int &Bmt::IndexSize();
Bmt::Cell *Bmt::IndexBegin();
unsigned int &Bmt::HistoryOffset();
unsigned int &Bmt::HistorySize();
unsigned int *Bmt::HistoryBegin(); */
/**** BMT BUILDER ****/
BmtBuilder::BmtBuilder(): ftmp(NULL), fout(NULL) {}
BmtBuilder::~BmtBuilder() {}
bool BmtBuilder::Create(unsigned int sign) {
signature = sign;
ftmp = fopen("tmp.bmt", "wb+");
if(!ftmp)
return false;
return true;
}
unsigned int BmtBuilder::AddCell(Bmt::Cell cell, unsigned int size, char *data) {
sphere.Add(cell.sphere);
cell.offset = ftell(ftmp);
index.push_back(cell);
//TODO: add padding to 4 or 8 bytes.
fwrite(&size, sizeof(unsigned int), 1, ftmp);
fwrite(data, 1, size, ftmp);
return index.size()-1;
}
void BmtBuilder::AddUpdate(std::vector<unsigned int> &created, std::vector<unsigned int> &erased) {
creation.push_back(created);
deletion.push_back(erased);
}
bool BmtBuilder::Save(const std::string &filename) {
assert(ftmp);
//TODO: reorganize data to be spatially coherent (both index and related data.
fout = fopen(filename.c_str(), "wb+");
if(!fout) {
fclose(ftmp);
return false;
}
//first thing we write a magic constant "bmt!"
unsigned int magic = 0x62647421; //bmt!
fwrite(&magic, sizeof(unsigned int), 1, fout);
//signature:
fwrite(&signature, sizeof(unsigned int), 1, fout);
//sphere
fwrite(&sphere, sizeof(Sphere3f), 1, fout);
//next we write index and history offset and size
unsigned int index_offset = 5 * sizeof(unsigned int) + sizeof(Sphere3f);
unsigned int index_size = index.size();
fwrite(&index_offset, sizeof(unsigned int), 1, fout);
fwrite(&index_size, sizeof(unsigned int), 1, fout);
unsigned int history_offset = index_offset + index_size * sizeof(Bmt::Cell);
unsigned int history_size = creation.size();
fwrite(&history_offset, sizeof(unsigned int), 1, fout);
fwrite(&history_size, sizeof(unsigned int), 1, fout);
unsigned int index_start = ftell(fout);
//writing index (but its a fake... it will need to be rewritten late5r with correct offsets
fwrite(&index[0], sizeof(Bmt::Cell), index.size(), fout);
//writing history
for(unsigned int i = 0; i < creation.size(); i++) {
vector<unsigned int> &created = creation[i];
vector<unsigned int> &erased = deletion[i];
unsigned int created_size = created.size();
fwrite(&created_size, sizeof(unsigned int), 1, fout);
fwrite(&*created.begin(), sizeof(unsigned int), created.size(), fout);
unsigned int erased_size = erased.size();
fwrite(&erased_size, sizeof(unsigned int), 1, fout);
fwrite(&*created.begin(), sizeof(unsigned int), erased.size(), fout);
}
//writing data
vector<Bmt::Cell>::iterator k;
for(k = index.begin(); k != index.end(); k++) {
Bmt::Cell &cell = *k;
fseek(ftmp, cell.offset, SEEK_SET);
unsigned int size;
fread(&size, sizeof(unsigned int), 1, ftmp);
char *data = new char[size];
fread(data, 1, size, ftmp);
cell.offset = ftell(fout);
fwrite(&size, sizeof(unsigned int), 1, fout);
fwrite(data, 1, size, fout);
delete []data;
}
//writing index again
fseek(fout, index_start, SEEK_SET);
fwrite(&index[0], sizeof(Bmt::Cell), index.size(), fout);
fclose(fout);
return true;
}

111
wrap/bmt/bmt.h Normal file
View File

@ -0,0 +1,111 @@
/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 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 General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
****************************************************************************/
#ifndef VCG_BMT_H
#define VCG_BMT_H
#include <string>
#include <vector>
#include <vcg/space/sphere3.h>
#include <wrap/mt/mt.h>
namespace vcg {
/** \addtogroup bmt */
/*@{*/
/**
The class for representing a batched mt structure.
See bmt.cpp for details on the structure of the file.
*/
class Bmt {
public:
///Cell structure for the mt representation
class Cell {
public:
//this effectively limits databases to 4Gb in size.
unsigned int offset;
float error;
Sphere3f sphere;
float Error() { return error; }
};
///tells what is inside each cell.
unsigned int signature;
///Bounding sphere
Sphere3f sphere;
std::vector<Cell> index;
std::vector< MT<Bmt::Cell>::Update > history;
Bmt();
~Bmt();
bool Load(const std::string &filename);
char *GetData(unsigned int &size, unsigned int offset);
private:
FILE *fp;
unsigned int index_offset;
unsigned int index_size;
unsigned int history_offset;
unsigned int history_size;
};
class BmtBuilder {
public:
BmtBuilder();
~BmtBuilder();
///tells what is inside each cell.
unsigned int signature;
///Bounding sphere
Sphere3f sphere;
std::vector<Bmt::Cell> index;
std::vector<std::vector<unsigned int > > creation;
std::vector<std::vector<unsigned int > > deletion;
bool Create(unsigned int signature);
unsigned int AddCell(Bmt::Cell cell, unsigned int size, char *data);
void AddUpdate(std::vector<unsigned int> &created, std::vector<unsigned int> &erased);
bool Save(const std::string &filename);
private:
FILE *ftmp;
FILE *fout;
};
float Distance(Bmt::Cell &cell, Point3f &p);
}//end namespace
#endif

70
wrap/bmt/strip_mesh.h Normal file
View File

@ -0,0 +1,70 @@
/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 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 General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
****************************************************************************/
#ifndef VCG_STRIP_MESH_H
#define VCG_STRIP_MESH_H
#include <vector>
namespace vcg {
class StripMesh {
public:
enum Signature { NORMAL = 1, COLOR = 2, STRIP = 4 };
StripMesh(char *s);
private:
unsigned short _vert_size;
unsigned short _norm_size;
unsigned short _color_size;
unsigned short _strip_size;
Point3f *_vert_start;
short *_norm_start;
unsigned char *_color_start;
unsigned short *_strip_start;
};
class StripMeshBuilder {
public:
std::vector<Point3f> vert;
std::vector<short> norm;
std::vector<unsigned char> color;
std::vector<unsigned short> strip;
unsigned int Signature();
///required size;
unsigned int Size();
void Write(char *buffer, unsigned int size);
};
}//namespace
#endif