First working version!
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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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This folders contains most common FACE configuration files
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The name of the file specify the members that are added to the vertex class
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The name is a sequence of letters, in strict alphabetical order.
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The possible admitted letters pairs are
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FA - face-face adjacency
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FC - Per-Face Color
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FN - Per-Face Normal
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FQ - Per-Face Quality
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VA - Vertex-face adjacency
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WC - Per-Wedge Color
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WN - Per-Wedge Normal
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WQ - Per-Wedge Quality
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WT - Per-Wedge Texture Coords
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SA - Shared Vertex-Face and Face-Face Adjacency
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RT - Data for Optimized Point-Face Distance and Ray-Tracing Stuff
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E.g.
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#include<vcg/simplex/vertex/with/fafnwc.h>
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generate a type
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VertexFAFNWC<VertexType>
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that can store F-F adjacency, Per face normal color and per wedge color.
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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 __VCGLIB_IMPORT_STL
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#define __VCGLIB_IMPORT_STL
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#include <stdio.h>
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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 stl (stereolitograpy) meshes.
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The stl format is quite simple and rather un-flexible. It just stores, in ascii or binary the, unindexed, geometry of the faces.
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warning this code assume little endian (PC) architecture!!!
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*/
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template <class OpenMeshType>
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class ImporterSTL
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{
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public:
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typedef typename OpenMeshType::VertexPointer VertexPointer;
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typedef typename OpenMeshType::ScalarType ScalarType;
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typedef typename OpenMeshType::VertexType VertexType;
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typedef typename OpenMeshType::FaceType FaceType;
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typedef typename OpenMeshType::VertexIterator VertexIterator;
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typedef typename OpenMeshType::FaceIterator FaceIterator;
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// if it is binary there are 80 char of comment, the number fn of faces and then exactly fn*4*3 bytes.
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enum {STL_LABEL_SIZE=80};
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class STLFacet
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{
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public:
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Point3f n;
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Point3f v[3];
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// short attr;
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};
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static int Open( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
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{
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FILE *fp;
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bool binary=false;
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fp = fopen(filename, "r");
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if(fp == NULL)
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{
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return 0;
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}
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/* Find size of file */
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fseek(fp, 0, SEEK_END);
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int file_size = ftell(fp);
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int facenum;
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/* Check for binary or ASCII file */
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fseek(fp, STL_LABEL_SIZE, SEEK_SET);
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fread(&facenum, sizeof(int), 1, fp);
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int expected_file_size=STL_LABEL_SIZE + 4 + (sizeof(short)+sizeof(STLFacet) )*facenum ;
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if(file_size == expected_file_size) binary = true;
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unsigned char tmpbuf[128];
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fread(tmpbuf,sizeof(tmpbuf),1,fp);
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for(int i = 0; i < sizeof(tmpbuf); i++)
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{
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if(tmpbuf[i] > 127)
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{
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binary=true;
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break;
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}
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}
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// Now we know if the stl file is ascii or binary.
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fclose(fp);
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if(binary) return OpenBinary(m,filename,cb);
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else return OpenAscii(m,filename,cb);
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}
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static int OpenBinary( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
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{
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FILE *fp;
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fp = fopen(filename, "rb");
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if(fp == NULL)
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{
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return 0;
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}
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int facenum;
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fseek(fp, STL_LABEL_SIZE, SEEK_SET);
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fread(&facenum, sizeof(int), 1, fp);
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m.Clear();
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FaceIterator fi=Allocator<OpenMeshType>::AddFaces(m,facenum);
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VertexIterator vi=Allocator<OpenMeshType>::AddVertices(m,facenum*3);
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// For each triangle read the normal, the three coords and a short set to zero
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for(int i=0;i<facenum;++i)
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{
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short attr;
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Point3f norm;
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Point3f tri[3];
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fread(&norm,sizeof(Point3f),1,fp);
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fread(&tri,sizeof(Point3f),3,fp);
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fread(&attr,sizeof(short),1,fp);
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for(int k=0;k<3;++k)
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{
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(*vi).P().Import(tri[k]);
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(*fi).V(k)=&*vi;
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++vi;
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}
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++fi;
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}
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fclose(fp);
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return 1;
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}
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static int OpenAscii( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
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{
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FILE *fp;
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bool binary;
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fp = fopen(filename, "r");
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if(fp == NULL)
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{
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return 0;
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}
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m.Clear();
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/* Skip the first line of the file */
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while(getc(fp) != '\n');
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STLFacet f;
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/* Read a single facet from an ASCII .STL file */
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while(!feof(fp))
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{
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fscanf(fp, "%*s %*s %f %f %f\n", &f.n.X(), &f.n.Y(), &f.n.Z());
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fscanf(fp, "%*s %*s");
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fscanf(fp, "%*s %f %f %f\n", &f.v[0].X(), &f.v[0].Y(), &f.v[0].Z());
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fscanf(fp, "%*s %f %f %f\n", &f.v[1].X(), &f.v[1].Y(), &f.v[1].Z());
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fscanf(fp, "%*s %f %f %f\n", &f.v[2].X(), &f.v[2].Y(), &f.v[2].Z());
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fscanf(fp, "%*s"); // end loop
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fscanf(fp, "%*s"); // end facet
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if(feof(fp)) break;
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FaceIterator fi=Allocator<OpenMeshType>::AddFaces(m,1);
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VertexIterator vi=Allocator<OpenMeshType>::AddVertices(m,3);
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for(int k=0;k<3;++k)
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{
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(*vi).P().Import(f.v[k]);
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(*fi).V(k)=&*vi;
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++vi;
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}
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}
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fclose(fp);
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return 1;
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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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//@}
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#endif
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