465 lines
12 KiB
C++
465 lines
12 KiB
C++
/****************************************************************************
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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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Revision 1.2 2005/05/09 12:29:55 callieri
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added line cleaning to eliminate all separators, added a rough triangulation scheme.
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Revision 1.1 2005/05/06 13:58:26 callieri
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First working version (callieri)
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****************************************************************************/
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#ifndef __VCGLIB_IMPORT_RAW
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#define __VCGLIB_IMPORT_RAW
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#include <stdio.h>
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#include <fstream>
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#include <iostream>
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namespace vcg {
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namespace tri {
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namespace io {
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/**
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This class encapsulate a filter for importing raw format pointcloud.
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there exists many raw formats. each one with a particular sintax even if they only contains
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*/
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template <class MESH_TYPE>
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class ImporterRAW
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{
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public:
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typedef typename MESH_TYPE::VertexPointer VertexPointer;
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typedef typename MESH_TYPE::ScalarType ScalarType;
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typedef typename MESH_TYPE::VertexType VertexType;
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typedef typename MESH_TYPE::FaceType FaceType;
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typedef typename MESH_TYPE::VertexIterator VertexIterator;
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typedef typename MESH_TYPE::FaceIterator FaceIterator;
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// max token number
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#define RAW_MAX_TOKEN_LINE_DESCRIPTOR 32
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enum RAWError {
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E_NOERROR, // 0
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// Error open
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E_CANTOPEN, // 1
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E_UNESPECTEDEOF, // 2
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// error line descriptor
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E_INVALIDLINEDESC, // 3
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// error line parsing
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E_LINEERROR, // 4
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// wrong number of points
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E_WRONGPOINTNUM // 5
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};
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static const char *ErrorMsg(int error)
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{
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static const char * raw_error_msg[] =
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{
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"No errors",
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"Can't open file",
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"Premature End of file",
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"Invalid line Descriptor",
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"Error parsing a line",
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"Point number different from expected"
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};
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if(error>2 || error<0) return "Unknown error";
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else return stl_error_msg[error];
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};
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// line format is a string describing which data is stored for every data line
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// PX PY PZ posizione
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// NX NY NZ normale
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// CR CG CB colore
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// RF riflettanza (qualita')
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//
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// the string is parsed to know how many value are contained in each line
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// and which is the order. the result is a number (how many) and a vector
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// describing the order
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//
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//
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// during reading a data structure is used to store intermediate values
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// it is basically an array of float
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//
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// float linebuffer[]
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//[0][1][2][3][4][5][6][7][8][9]
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// p p p n n n c c c r
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// x y z x y z r g b f
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//
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// given the number of tokens and the order vector it is possible to scan a line using the command
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//
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// for(...n 0->tokennumber...)
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// fscanf(fp,"%f", &linebuffer[tokenorder[n]])
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static int Parselinedescription(const char * linedesc, int &tokennumber, int *order)
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{
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int ii;
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char tok[3];
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int index;
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// controllo lunghezza
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// se non e' multiplo di 3 allora e' errato
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int len = strlen(linedesc) + 1;
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if(len%3 != 0)
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return E_INVALIDLINEDESC;
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index=0;
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tok[2] = '\0';
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tokennumber = 0;
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for(ii=0; ii<RAW_MAX_TOKEN_LINE_DESCRIPTOR; ii++)
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order[ii] = -1;
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while(index <= (len-3))
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{
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tok[0] = linedesc[index ];
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tok[1] = linedesc[index+1];
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if(strcmp(tok,"PX") == 0) // pos x
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{order[tokennumber] = 0; tokennumber++;}
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else if (strcmp(tok,"PY") == 0) // pos y
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{order[tokennumber] = 1; tokennumber++;}
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else if (strcmp(tok,"PZ") == 0) // pos z
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{order[tokennumber] = 2; tokennumber++;}
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else if (strcmp(tok,"NX") == 0) // norm x
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{order[tokennumber] = 3; tokennumber++;}
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else if (strcmp(tok,"NY") == 0) // norm y
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{order[tokennumber] = 4; tokennumber++;}
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else if (strcmp(tok,"NZ") == 0) // norm z
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{order[tokennumber] = 5; tokennumber++;}
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else if (strcmp(tok,"CR") == 0) // col r
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{order[tokennumber] = 6; tokennumber++;}
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else if (strcmp(tok,"CG") == 0) // col g
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{order[tokennumber] = 7; tokennumber++;}
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else if (strcmp(tok,"CB") == 0) // col b
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{order[tokennumber] = 8; tokennumber++;}
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else if (strcmp(tok,"RF") == 0) // rifl
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{order[tokennumber] = 9; tokennumber++;}
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else // nessuno dei suddetti... errore
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{ return E_INVALIDLINEDESC; }
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index +=3;
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}
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return E_NOERROR;
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}
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// function to skip a line
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static void Skipline(FILE *fp)
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{
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char buf;
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fread(&(buf),sizeof(char),1,fp);
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while(buf != '\n')
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fread(&(buf),sizeof(char),1,fp);
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}
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// function to parse the line read from the raw file
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// all characters besides numerals,dot,minus,plus
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// if e is found between numbers it's ketpt (12e4)
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static int Parseline(int tokennumber, int *tokenorder, char *rawline, float *linebuffer)
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{
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int linelen;
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int ii;
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bool change;
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int foundtok;
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// length
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linelen = strlen(rawline);
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// cleaning the line
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for(ii=0;ii<(linelen-1);)
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{
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change = true;
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if(isdigit(rawline[ii])) // is a number
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change = false;
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else if(rawline[ii]==' ') // is a space
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change = false;
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else if((rawline[ii]=='-') || (rawline[ii]=='+') || (rawline[ii]=='-') || (rawline[ii]=='.')) // is + - .
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change = false;
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else if(rawline[ii]=='e') // is e... is perhaps an exponential ?
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{
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if((ii>0) || (ii<(linelen-2))) // if it's at the begin or the end of line, it's not an exponential
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if(isdigit(rawline[ii-1])) // a number before it
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if(isdigit(rawline[ii+1]) || (rawline[ii+1]=='+') || (rawline[ii+1]=='-')) // after it a number a plus or a minus
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change = false;
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}
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if(change)
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rawline[ii++] = ' '; // then change it to ' '
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else
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ii++;
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}
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rawline[linelen] = '\0';
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// now parsing the line
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foundtok = 0;
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ii = 0;
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while((foundtok<tokennumber)&&(ii<linelen))
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{
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//find the next token begin
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while(rawline[ii] == ' ')
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ii++;
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foundtok++;
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sscanf(&(rawline[ii]),"%f", &(linebuffer[tokenorder[foundtok-1]]));
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// going after the token
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while((rawline[ii] != ' ')&&(rawline[ii] != '\0'))
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ii++;
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}
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if(foundtok<tokennumber)
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return E_LINEERROR;
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else
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return E_NOERROR;
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}
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static int fillHoles( MESH_TYPE &m, size_t rowCount, size_t colCount)
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{
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for (size_t i = 1; i<colCount-1; ++i)
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for (size_t j = 1; j<rowCount-1; ++j)
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{
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size_t ind = (i) + ((j) * colCount);
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size_t indL = (i-1) + ((j) * colCount);
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size_t indR = (i+1) + ((j) * colCount);
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size_t indT = (i) + ((j-1) * colCount);
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size_t indB = (i) + ((j+1) * colCount);
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if ((m.vert[ind].P() == vcg::Point3<MESH_TYPE::ScalarType>(0,0,0)) &&
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(m.vert[indL].P() != vcg::Point3<MESH_TYPE::ScalarType>(0,0,0)) &&
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(m.vert[indR].P() != vcg::Point3<MESH_TYPE::ScalarType>(0,0,0)) &&
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(m.vert[indT].P() != vcg::Point3<MESH_TYPE::ScalarType>(0,0,0)) &&
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(m.vert[indB].P() != vcg::Point3<MESH_TYPE::ScalarType>(0,0,0)) )
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{
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m.vert[ind].P() = ( m.vert[indL].P() + m.vert[indR].P() + m.vert[indT].P() + m.vert[indB].P() ) * 0.25;
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}
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}
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//vcg::tri::io::ExporterPLY<MESH_TYPE>::Save( hm, "hole.ply" );
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return 1;
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}
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/*!
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* Standard call for reading a mesh
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* \param m the destination mesh
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* \param filename the name of the file to read from
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* \param triangulate if true, the mesh will be triangulated, otherwise only points will be stored
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* \param lineskip number of lines to be skipped at the begin of the file
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* \return the operation result
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*/
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static int Open( MESH_TYPE &m, const char * filename, bool triangulate=false, int lineskip = 0, const char * linedesc = "PX PY PZ")
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{
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int ii;
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int ret;
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FILE *fp;
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int rownumber;
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int colnumber;
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// line description
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int tokennumber;
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int tokenorder[RAW_MAX_TOKEN_LINE_DESCRIPTOR];
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// line read from file, to be parsed
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char rawline[512];
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//line data buffer
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float linebuffer[10];
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// fill buffer with standard values
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linebuffer[0] = linebuffer[1] = linebuffer[2] = 0.0;
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linebuffer[3] = linebuffer[4] = linebuffer[5] = 1.0;
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linebuffer[6] = 0.0; linebuffer[7] = 1.0; linebuffer[8] = 0.0;
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linebuffer[9] = 1.0;
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fp = fopen(filename, "r");
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if(fp == NULL)
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{
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return E_CANTOPEN;
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}
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// skip initial lines
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for(ii=0; ii<lineskip; ii++) Skipline(fp);
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// in raw files with indication of rows and columns it's also possible to triangulate points
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// after the skipped lines there should be the number of row and columns
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if(triangulate)
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{
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fscanf(fp,"%i", &(rownumber));
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fscanf(fp,"%i\n", &(colnumber));
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}
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// parsing line description
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ret = Parselinedescription(linedesc, tokennumber, tokenorder);
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if(ret)
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return ret;
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m.Clear();
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m.vert.reserve( rownumber * colnumber );
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int line = 0;
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size_t rowCounter = 0;
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size_t colCounter = 0;
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while(!feof(fp))
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{
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/**/
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//read a new line
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ii=0;
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memset( rawline, 0, 512);
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fread(&(rawline[ii++]),sizeof(char),1,fp);
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while( (rawline[ii-1] != '\n') && (ii<512) )
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{
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fread(&(rawline[ii++]),sizeof(char),1,fp);
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}
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rawline[ii-1] = '\0';
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line++;
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if(strlen(rawline) >0) // empty line, just skip
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{
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ret = Parseline(tokennumber, tokenorder, rawline, linebuffer);
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if(ret)
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return ret;
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/*
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// old code reading directly fom file stream
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for(ii=0; ii<tokennumber; ii++)
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fscanf(fp,"%f", &(linebuffer[tokenorder[ii]]));
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*/
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// new vertex
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VertexType nv;
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// store the position
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nv.P()[0] = linebuffer[0];
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nv.P()[1] = linebuffer[1];
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nv.P()[2] = linebuffer[2];
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// store the normal
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if(HasPerVertexNormal(m))
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{
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nv.N()[0] = linebuffer[3];
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nv.N()[1] = linebuffer[4];
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nv.N()[2] = linebuffer[5];
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}
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// store the color
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if(HasPerVertexColor(m))
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{
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nv.C()[0] = linebuffer[6];
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nv.C()[1] = linebuffer[7];
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nv.C()[2] = linebuffer[8];
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}
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// store the reflectance
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if(m.HasPerVertexQuality())
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{
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nv.Q() = linebuffer[9];
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}
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m.vert.push_back(nv);
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} // end if zero length
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}
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m.vn = m.vert.size();
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if(triangulate) fillHoles(m, rownumber, colnumber);
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// update model point number
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// now generate the triangles
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if(triangulate)
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{
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int rr,cc;
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//if(m.vn != (rownumber * colnumber)) return E_WRONGPOINTNUM;
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int trinum = (rownumber-1) * (colnumber-1) * 2;
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FaceIterator fi=Allocator<MESH_TYPE>::AddFaces(m,trinum);
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FaceIterator fi2 = fi;
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m.fn = trinum;
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for(cc=0; cc<colnumber-1; cc++)
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for(rr=0; rr<rownumber-1; rr++)
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{
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// upper tri
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(*fi).V(0) = &(m.vert[(cc+1) + ((rr ) * colnumber)]);
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(*fi).V(1) = &(m.vert[(cc ) + ((rr ) * colnumber)]);
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(*fi).V(2) = &(m.vert[(cc ) + ((rr+1) * colnumber)]);
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fi++;
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// lower tri
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(*fi).V(0) = &(m.vert[(cc ) + ((rr+1) * colnumber)]);
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(*fi).V(1) = &(m.vert[(cc+1) + ((rr+1) * colnumber)]);
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(*fi).V(2) = &(m.vert[(cc+1) + ((rr ) * colnumber)]);
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fi++;
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}
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// tag faux faces
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if (m.HasPerFaceFlags()) {
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for (; fi2!=m.face.end(); fi2++) {
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(*fi2).SetF(2);
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}
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}
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}
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fclose(fp);
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return E_NOERROR;
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}
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}; // end class
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} // end Namespace tri
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} // end Namespace io
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} // end Namespace vcg
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#endif
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