Backup (working on it).
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#include <wrap/bmt/bmt.h>
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using namespace std;
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using namespace vcg;
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Bmt::Bmt(): fp(NULL) {}
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Bmt::~Bmt() {}
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bool Bmt::Load(const std::string &filename) {
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fp = fopen(filename.c_str(), "rb");
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if(!fp) return false;
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unsigned int magic;
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fread(&magic, sizeof(unsigned int), 1, fp);
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if(magic != 0x62647421) //bmt!
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return false;
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//signature
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fread(&signature, sizeof(unsigned int), 1, fp);
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//sphere
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fread(&sphere, sizeof(Sphere3f), 1, fp);
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//index and history offsets and size;
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fread(&index_offset, sizeof(unsigned int), 1, fp);
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fread(&index_size, sizeof(unsigned int), 1, fp);
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fread(&history_offset, sizeof(unsigned int), 1, fp);
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fread(&history_size, sizeof(unsigned int), 1, fp);
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//index
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index.resize(index_size);
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fread(&index[0], sizeof(Bmt::Cell), index.size(), fp);
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//history
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history.resize(history_size);
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for(unsigned int i = 0; i < history.size(); i++) {
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vector<Bmt::Cell *> &created = history[i].created;
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vector<Bmt::Cell *> &erased = history[i].erased;
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unsigned int created_size;
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fread(&created_size, sizeof(unsigned int), 1, fp);
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created.resize(created_size);
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fread(&*created.begin(), sizeof(unsigned int), created.size(), fp);
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for(unsigned int k = 0; k < created_size; k++)
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created[k] = &(index[(unsigned int)created[k]]);
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unsigned int erased_size;
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fread(&erased_size, sizeof(unsigned int), 1, fp);
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erased.resize(erased_size);
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fread(&*erased.begin(), sizeof(unsigned int), erased.size(), fp);
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for(unsigned int k = 0; k < erased_size; k++)
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erased[k] = &(index[(unsigned int)erased[k]]);
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}
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return true;
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}
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char *Bmt::GetData(unsigned int &size, unsigned int offset) {
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fseek(fp, offset, SEEK_SET);
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fread(&size, sizeof(unsigned int), 1, fp);
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assert(size < 64000);
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char *data = new char[size];
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fread(data, 1, size, fp);
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return data;
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}
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/*unsigned int &Bmt::IndexOffset();
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unsigned int &Bmt::IndexSize();
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Bmt::Cell *Bmt::IndexBegin();
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unsigned int &Bmt::HistoryOffset();
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unsigned int &Bmt::HistorySize();
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unsigned int *Bmt::HistoryBegin(); */
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/**** BMT BUILDER ****/
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BmtBuilder::BmtBuilder(): ftmp(NULL), fout(NULL) {}
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BmtBuilder::~BmtBuilder() {}
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bool BmtBuilder::Create(unsigned int sign) {
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signature = sign;
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ftmp = fopen("tmp.bmt", "wb+");
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if(!ftmp)
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return false;
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return true;
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}
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unsigned int BmtBuilder::AddCell(Bmt::Cell cell, unsigned int size, char *data) {
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sphere.Add(cell.sphere);
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cell.offset = ftell(ftmp);
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index.push_back(cell);
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//TODO: add padding to 4 or 8 bytes.
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fwrite(&size, sizeof(unsigned int), 1, ftmp);
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fwrite(data, 1, size, ftmp);
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return index.size()-1;
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}
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void BmtBuilder::AddUpdate(std::vector<unsigned int> &created, std::vector<unsigned int> &erased) {
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creation.push_back(created);
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deletion.push_back(erased);
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}
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bool BmtBuilder::Save(const std::string &filename) {
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assert(ftmp);
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//TODO: reorganize data to be spatially coherent (both index and related data.
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fout = fopen(filename.c_str(), "wb+");
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if(!fout) {
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fclose(ftmp);
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return false;
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}
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//first thing we write a magic constant "bmt!"
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unsigned int magic = 0x62647421; //bmt!
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fwrite(&magic, sizeof(unsigned int), 1, fout);
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//signature:
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fwrite(&signature, sizeof(unsigned int), 1, fout);
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//sphere
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fwrite(&sphere, sizeof(Sphere3f), 1, fout);
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//next we write index and history offset and size
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unsigned int index_offset = 5 * sizeof(unsigned int) + sizeof(Sphere3f);
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unsigned int index_size = index.size();
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fwrite(&index_offset, sizeof(unsigned int), 1, fout);
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fwrite(&index_size, sizeof(unsigned int), 1, fout);
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unsigned int history_offset = index_offset + index_size * sizeof(Bmt::Cell);
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unsigned int history_size = creation.size();
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fwrite(&history_offset, sizeof(unsigned int), 1, fout);
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fwrite(&history_size, sizeof(unsigned int), 1, fout);
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unsigned int index_start = ftell(fout);
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//writing index (but its a fake... it will need to be rewritten late5r with correct offsets
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fwrite(&index[0], sizeof(Bmt::Cell), index.size(), fout);
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//writing history
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for(unsigned int i = 0; i < creation.size(); i++) {
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vector<unsigned int> &created = creation[i];
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vector<unsigned int> &erased = deletion[i];
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unsigned int created_size = created.size();
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fwrite(&created_size, sizeof(unsigned int), 1, fout);
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fwrite(&*created.begin(), sizeof(unsigned int), created.size(), fout);
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unsigned int erased_size = erased.size();
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fwrite(&erased_size, sizeof(unsigned int), 1, fout);
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fwrite(&*created.begin(), sizeof(unsigned int), erased.size(), fout);
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}
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//writing data
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vector<Bmt::Cell>::iterator k;
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for(k = index.begin(); k != index.end(); k++) {
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Bmt::Cell &cell = *k;
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fseek(ftmp, cell.offset, SEEK_SET);
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unsigned int size;
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fread(&size, sizeof(unsigned int), 1, ftmp);
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char *data = new char[size];
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fread(data, 1, size, ftmp);
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cell.offset = ftell(fout);
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fwrite(&size, sizeof(unsigned int), 1, fout);
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fwrite(data, 1, size, fout);
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delete []data;
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}
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//writing index again
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fseek(fout, index_start, SEEK_SET);
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fwrite(&index[0], sizeof(Bmt::Cell), index.size(), fout);
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fclose(fout);
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return true;
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}
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@ -0,0 +1,111 @@
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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****************************************************************************/
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#ifndef VCG_BMT_H
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#define VCG_BMT_H
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#include <string>
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#include <vector>
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#include <vcg/space/sphere3.h>
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#include <wrap/mt/mt.h>
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namespace vcg {
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/** \addtogroup bmt */
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/*@{*/
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/**
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The class for representing a batched mt structure.
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See bmt.cpp for details on the structure of the file.
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*/
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class Bmt {
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public:
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///Cell structure for the mt representation
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class Cell {
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public:
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//this effectively limits databases to 4Gb in size.
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unsigned int offset;
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float error;
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Sphere3f sphere;
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float Error() { return error; }
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};
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///tells what is inside each cell.
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unsigned int signature;
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///Bounding sphere
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Sphere3f sphere;
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std::vector<Cell> index;
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std::vector< MT<Bmt::Cell>::Update > history;
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Bmt();
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~Bmt();
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bool Load(const std::string &filename);
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char *GetData(unsigned int &size, unsigned int offset);
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private:
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FILE *fp;
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unsigned int index_offset;
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unsigned int index_size;
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unsigned int history_offset;
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unsigned int history_size;
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};
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class BmtBuilder {
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public:
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BmtBuilder();
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~BmtBuilder();
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///tells what is inside each cell.
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unsigned int signature;
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///Bounding sphere
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Sphere3f sphere;
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std::vector<Bmt::Cell> index;
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std::vector<std::vector<unsigned int > > creation;
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std::vector<std::vector<unsigned int > > deletion;
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bool Create(unsigned int signature);
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unsigned int AddCell(Bmt::Cell cell, unsigned int size, char *data);
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void AddUpdate(std::vector<unsigned int> &created, std::vector<unsigned int> &erased);
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bool Save(const std::string &filename);
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private:
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FILE *ftmp;
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FILE *fout;
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};
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float Distance(Bmt::Cell &cell, Point3f &p);
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}//end namespace
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#endif
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@ -0,0 +1,70 @@
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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****************************************************************************/
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#ifndef VCG_STRIP_MESH_H
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#define VCG_STRIP_MESH_H
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#include <vector>
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namespace vcg {
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class StripMesh {
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public:
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enum Signature { NORMAL = 1, COLOR = 2, STRIP = 4 };
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StripMesh(char *s);
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private:
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unsigned short _vert_size;
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unsigned short _norm_size;
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unsigned short _color_size;
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unsigned short _strip_size;
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Point3f *_vert_start;
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short *_norm_start;
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unsigned char *_color_start;
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unsigned short *_strip_start;
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};
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class StripMeshBuilder {
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public:
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std::vector<Point3f> vert;
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std::vector<short> norm;
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std::vector<unsigned char> color;
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std::vector<unsigned short> strip;
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unsigned int Signature();
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///required size;
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unsigned int Size();
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void Write(char *buffer, unsigned int size);
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};
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}//namespace
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#endif
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