int main(int argc, char **argv)
{
const char *value;
p_ply iply, oply;
iply = ply_open("input.ply", NULL);
if (!iply) return 1;
if (!ply_read_header(iply)) return 1;
oply = ply_create("output.ply", PLY_LITTLE_ENDIAN, NULL);
if (!oply) return 1;
if (!setup_callbacks(iply, oply)) return 1;
/* pass comments and obj_infos from input to output */
value = NULL;
while ((value = ply_get_next_comment(iply, value)))
if (!ply_add_comment(oply, value)) return 1;
value = NULL;
while ((value = ply_get_next_obj_info(iply, value)))
if (!ply_add_obj_info(oply, value)) return 1;;
/* write output header */
if (!ply_write_header(oply)) return 1;
/* read input file generating callbacks that pass data to output file */
if (!ply_read(iply)) return 1;
/* close up, we are done */
if (!ply_close(iply)) return 1;
if (!ply_close(oply)) return 1;
return 0;
}
int MapSerializer_ply::num_facet(const std::string& file_name) {
p_ply ply = ply_open(file_name.c_str(), nil, 0, nil) ;
if(ply == nil) {
Logger::err("MapSerializer_ply") << file_name << ": could not open" << std::endl ;
return false ;
}
if(!ply_read_header(ply)) {
Logger::err("MapSerializer_ply") << file_name << ": invalid PLY file" << std::endl ;
ply_close(ply) ;
return false ;
}
p_ply_element element = nil ;
for(;;) {
element = ply_get_next_element(ply, element) ;
if(element == nil)
break ;
const char* elt_name = nil ;
long num;
ply_get_element_info(element, &elt_name, &num) ;
if(!strcmp(elt_name, "face")) {
if (num > 0) {
ply_close(ply) ;
return num;
}
}
}
ply_close(ply) ;
return 0;
}
/* given a format mode, an input file name and an output file name,
* convert input file to output in given format mode */
int main(int argc, char **argv) {
const char *value = NULL;
e_ply_storage_mode storage_mode = PLY_LITTLE_ENDIAN;
const char *iname = NULL, *oname = NULL;
p_ply iply = NULL, oply = NULL;
/* parse command line arguments */
parse_arguments(argc, argv, &storage_mode, &iname, &oname);
/* open input file and make sure we parsed its header */
iply = ply_open(iname, NULL, 0, NULL);
if (!iply) error("Unable to open file '%s'", iname);
if (!ply_read_header(iply)) error("Failed reading '%s' header", iname);
/* create output file */
oply = ply_create(oname, storage_mode, NULL, 0, NULL);
if (!oply) error("Unable to create file '%s'", oname);
/* create elements and properties in output file and
* setup callbacks for them in input file */
setup_callbacks(iply, oply);
/* pass comments and obj_infos from input to output */
value = NULL;
while ((value = ply_get_next_comment(iply, value)))
if (!ply_add_comment(oply, value))
error("Failed adding comments");
value = NULL;
while ((value = ply_get_next_obj_info(iply, value)))
if (!ply_add_obj_info(oply, value))
error("Failed adding comments");
/* write output header */
if (!ply_write_header(oply)) error("Failed writing '%s' header", oname);
/* read input file generating callbacks that pass data to output file */
if (!ply_read(iply)) error("Conversion failed");
/* close up, we are done */
if (!ply_close(iply)) error("Error closing file '%s'", iname);
if (!ply_close(oply)) error("Error closing file '%s'", oname);
return 0;
}
bool load(const std::string& filename) {
p_ply ply = ply_open(filename.c_str(), nil, 0, nil) ;
if(ply == nil) {
Logger::err("PlyMeshLoad") << filename << ": could not open" << std::endl ;
return false ;
}
if(!ply_read_header(ply)) {
Logger::err("PlyMeshLoad") << filename << ": invalid PLY file" << std::endl ;
ply_close(ply) ;
return false ;
}
current_vertex_ = 0 ;
current_color_ = 0 ;
check_for_colors(ply) ;
long nvertices = ply_set_read_cb(ply, "vertex", "x", PlyMeshLoad::vertex_cb, this, 0) ;
ply_set_read_cb(ply, "vertex", "y", PlyMeshLoad::vertex_cb, this, 1) ;
ply_set_read_cb(ply, "vertex", "z", PlyMeshLoad::vertex_cb, this, 2) ;
long nfaces = ply_set_read_cb(ply, "face", "vertex_indices", PlyMeshLoad::face_cb, this, 0);
if (nfaces == 0) {
Logger::err("PlyMeshLoad")
<< "0 facet, maybe a point cloud file" << std::endl ;
ply_close(ply) ;
return false ;
}
ply_set_read_cb(ply, "tristrips", "vertex_indices", PlyMeshLoad::tristrip_cb, this, 0);
builder_.begin_surface() ;
builder_.create_vertices(nvertices, has_colors_) ;
if(!ply_read(ply)) {
Logger::err("PlyMeshLoad")
<< filename << ": problem occurred while parsing PLY file" << std::endl ;
ply_close(ply) ;
builder_.end_surface() ;
return false ;
}
ply_close(ply) ;
builder_.end_surface() ;
if (nfaces == 0)
return false;
else
return true ;
}
int loadPlyFile() {
p_ply ply = ply_open(filename, NULL, 0, NULL);
if (!ply) return -1;
if (!ply_read_header(ply)) return -1;
vertex_count = ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 1);
ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 2);
ply_set_read_cb(ply, "vertex", "nx", NULL, NULL, 0);
ply_set_read_cb(ply, "vertex", "ny", NULL, NULL, 0);
ply_set_read_cb(ply, "vertex", "nz", NULL, NULL, 0);
face_count = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
vertices = (double **) malloc(vertex_count * sizeof(double *));
faces = (int **) malloc(face_count * sizeof(int *));
if (!ply_read(ply)) return -1;
ply_close(ply);
return 1;
}
int Model::init(char filename[]){
p_ply ply = ply_open(filename, NULL, 0, NULL);
if (!ply) return 1;
if (!ply_read_header(ply)) return 1;
nvertices = ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 1);
ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
count_t = 0;
count_v = 0;
if(vertices != NULL){
delete [] vertices;
}
if(triangles != NULL){
delete [] triangles;
}
if(nml != NULL){
delete [] nml;
}
vertices = new vertex[nvertices];
triangles = new triangle[ntriangles];
nml = new normal[ntriangles];
if (!ply_read(ply)) return 1;
ply_close(ply);
return 0;
}
void MeshBase::loadDataFromPly( const std::string& filename )
{
p_ply ply = ply_open( filename.c_str(), 0);
if( !ply ) {
throw MeshException( "Error opening ply file during second pass (" + filename + ")" );
}
if( !ply_read_header( ply ) ) {
throw MeshException( "Error parsing ply header during second pass ("
+ filename + ")" );
}
MeshGroup& group = getFirstGroup();
PlyData data( m_vertex_data, m_normal_data, group.vertex_indices, group.normal_indices );
ply_set_read_cb( ply, "vertex", "x", plyVertexLoadDataCB, &data, 0);
ply_set_read_cb( ply, "vertex", "y", plyVertexLoadDataCB, &data, 1);
ply_set_read_cb( ply, "vertex", "z", plyVertexLoadDataCB, &data, 2);
ply_set_read_cb( ply, "vertex", "nx", plyVertexLoadDataCB, &data, 3);
ply_set_read_cb( ply, "vertex", "ny", plyVertexLoadDataCB, &data, 4);
ply_set_read_cb( ply, "vertex", "nz", plyVertexLoadDataCB, &data, 5);
ply_set_read_cb( ply, "face", "vertex_indices", plyFaceLoadDataCB, &data, 0);
if( !ply_read( ply ) ) {
throw MeshException( "Error parsing ply file (" + filename + ")" );
}
ply_close(ply);
}
void parse_ply(const std::string& filename, PLYParser* parser) {
p_ply ply = ply_open(filename.c_str(), NULL, 0, NULL);
assert_success(ply != NULL);
assert_success(ply_read_header(ply));
const char* elem_name;
const char* prop_name;
long num_elements;
p_ply_element element = ply_get_next_element(ply, NULL);
while (element != NULL) {
assert_success(ply_get_element_info(element, &elem_name, &num_elements));
p_ply_property property = ply_get_next_property(element, NULL);
while (property != NULL) {
assert_success(ply_get_property_info(property, &prop_name, NULL, NULL, NULL));
ply_set_read_cb(ply, elem_name, prop_name, ply_parser_call_back, parser, 0);
parser->add_property(elem_name, prop_name, num_elements);
property = ply_get_next_property(element, property);
}
element = ply_get_next_element(ply, element);
}
assert_success(ply_read(ply));
ply_close(ply);
}
write_test()
{
int i,j;
PlyFile *ply;
int nelems;
char **elist;
int file_type;
float version;
int nverts = sizeof (verts) / sizeof (Vertex);
int nfaces = sizeof (faces) / sizeof (Face);
/* create the vertex index lists for the faces */
for (i = 0; i < nfaces; i++)
faces[i].verts = vert_ptrs[i];
/* open either a binary or ascii PLY file for writing */
/* (the file will be called "test.ply" because the routines */
/* enforce the .ply filename extension) */
#if 1
ply = ply_open_for_writing("test", 2, elem_names, PLY_ASCII, &version);
#else
ply = ply_open_for_writing("test", 2, elem_names, PLY_BINARY_BE, &version);
#endif
/* describe what properties go into the vertex and face elements */
ply_element_count (ply, "vertex", nverts);
ply_describe_property (ply, "vertex", &vert_props[0]);
ply_describe_property (ply, "vertex", &vert_props[1]);
ply_describe_property (ply, "vertex", &vert_props[2]);
ply_element_count (ply, "face", nfaces);
ply_describe_property (ply, "face", &face_props[0]);
ply_describe_property (ply, "face", &face_props[1]);
/* write a comment and an object information field */
ply_put_comment (ply, "author: Greg Turk");
ply_put_obj_info (ply, "random information");
/* we have described exactly what we will put in the file, so */
/* we are now done with the header info */
ply_header_complete (ply);
/* set up and write the vertex elements */
ply_put_element_setup (ply, "vertex");
for (i = 0; i < nverts; i++)
ply_put_element (ply, (void *) &verts[i]);
/* set up and write the face elements */
ply_put_element_setup (ply, "face");
for (i = 0; i < nfaces; i++)
ply_put_element (ply, (void *) &faces[i]);
/* close the PLY file */
ply_close (ply);
}
void PlyReader::done(PointTableRef table)
{
if (!ply_close(m_ply))
{
std::stringstream ss;
ss << "Error closing " << m_filename << ".";
throw pdal_error(ss.str());
}
}
void
write_file()
{
int i,j,k;
PlyFile *ply;
int num_elems;
char *elem_name;
/*** Write out the final PLY object ***/
ply = ply_write (stdout, nelems, elist, file_type);
/* describe what properties go into the vertex and face elements */
ply_element_count (ply, "vertex", nverts);
ply_describe_property (ply, "vertex", &vert_props[0]);
ply_describe_property (ply, "vertex", &vert_props[1]);
ply_describe_property (ply, "vertex", &vert_props[2]);
ply_describe_property (ply, "vertex", &vert_props[3]);
ply_describe_property (ply, "vertex", &vert_props[4]);
ply_describe_property (ply, "vertex", &vert_props[5]);
ply_describe_other_properties (ply, vert_other, offsetof(Vertex,other_props));
ply_element_count (ply, "face", nfaces);
ply_describe_property (ply, "face", &face_props[0]);
ply_describe_other_properties (ply, face_other, offsetof(Face,other_props));
ply_describe_other_elements (ply, other_elements);
for (i = 0; i < num_comments; i++)
ply_put_comment (ply, comments[i]);
for (i = 0; i < num_obj_info; i++)
ply_put_obj_info (ply, obj_info[i]);
ply_header_complete (ply);
/* set up and write the vertex elements */
ply_put_element_setup (ply, "vertex");
for (i = 0; i < nverts; i++)
ply_put_element (ply, (void *) vlist[i]);
/* set up and write the face elements */
ply_put_element_setup (ply, "face");
for (i = 0; i < nfaces; i++)
ply_put_element (ply, (void *) flist[i]);
ply_put_other_elements (ply);
/* close the PLY file */
ply_close (ply);
}
bool WritePlyFile(const std::string &filename, int nTriangles,
const int *vertexIndices, int nVertices, const Point3f *P,
const Vector3f *S, const Normal3f *N, const Point2f *UV) {
p_ply plyFile =
ply_create(filename.c_str(), PLY_DEFAULT, PlyErrorCallback, 0, nullptr);
if (plyFile != nullptr) {
ply_add_element(plyFile, "vertex", nVertices);
ply_add_scalar_property(plyFile, "x", PLY_FLOAT);
ply_add_scalar_property(plyFile, "y", PLY_FLOAT);
ply_add_scalar_property(plyFile, "z", PLY_FLOAT);
if (N != nullptr) {
ply_add_scalar_property(plyFile, "nx", PLY_FLOAT);
ply_add_scalar_property(plyFile, "ny", PLY_FLOAT);
ply_add_scalar_property(plyFile, "nz", PLY_FLOAT);
}
if (UV != nullptr) {
ply_add_scalar_property(plyFile, "u", PLY_FLOAT);
ply_add_scalar_property(plyFile, "v", PLY_FLOAT);
}
if (S != nullptr)
Warning("PLY mesh in \"%s\" will be missing tangent vectors \"S\".",
filename.c_str());
ply_add_element(plyFile, "face", nTriangles);
ply_add_list_property(plyFile, "vertex_indices", PLY_UINT8, PLY_INT);
ply_write_header(plyFile);
for (int i = 0; i < nVertices; ++i) {
ply_write(plyFile, P[i].x);
ply_write(plyFile, P[i].y);
ply_write(plyFile, P[i].z);
if (N) {
ply_write(plyFile, N[i].x);
ply_write(plyFile, N[i].y);
ply_write(plyFile, N[i].z);
}
if (UV) {
ply_write(plyFile, UV[i].x);
ply_write(plyFile, UV[i].y);
}
}
for (int i = 0; i < nTriangles; ++i) {
ply_write(plyFile, 3);
ply_write(plyFile, vertexIndices[3 * i]);
ply_write(plyFile, vertexIndices[3 * i + 1]);
ply_write(plyFile, vertexIndices[3 * i + 2]);
}
ply_close(plyFile);
return true;
}
return false;
}
void PlyReader::initialize()
{
p_ply ply = openPly(m_filename);
p_ply_element vertex_element = nullptr;
bool found_vertex_element = false;
const char* element_name;
long element_count;
while ((vertex_element = ply_get_next_element(ply, vertex_element)))
{
if (!ply_get_element_info(vertex_element, &element_name, &element_count))
{
std::stringstream ss;
ss << "Error reading element info in " << m_filename << ".";
throw pdal_error(ss.str());
}
if (strcmp(element_name, "vertex") == 0)
{
found_vertex_element = true;
break;
}
}
if (!found_vertex_element)
{
std::stringstream ss;
ss << "File " << m_filename << " does not contain a vertex element.";
throw pdal_error(ss.str());
}
p_ply_property property = nullptr;
while ((property = ply_get_next_property(vertex_element, property)))
{
const char* name;
e_ply_type type;
e_ply_type length_type;
e_ply_type value_type;
if (!ply_get_property_info(property, &name, &type, &length_type, &value_type))
{
std::stringstream ss;
ss << "Error reading property info in " << m_filename << ".";
throw pdal_error(ss.str());
}
// For now, we'll just use PDAL's built in dimension matching.
// We could be smarter about this, e.g. by using the length
// and value type attributes.
Dimension::Id::Enum dim = Dimension::id(name);
if (dim != Dimension::Id::Unknown)
{
m_vertexDimensions[name] = dim;
}
}
ply_close(ply);
}
void PlyWriter::done(PointTableRef table)
{
if (!ply_add_element(m_ply, "vertex", m_pointCollector->size()))
{
std::stringstream ss;
ss << "Could not add vertex element";
throw pdal_error(ss.str());
}
auto dimensions = table.layout()->dims();
for (auto dim : dimensions) {
std::string name = Dimension::name(dim);
e_ply_type plyType = getPlyType(Dimension::defaultType(dim));
if (!ply_add_scalar_property(m_ply, name.c_str(), plyType))
{
std::stringstream ss;
ss << "Could not add scalar property '" << name << "'";
throw pdal_error(ss.str());
}
}
if (!ply_add_comment(m_ply, "Generated by PDAL"))
{
std::stringstream ss;
ss << "Could not add comment";
throw pdal_error(ss.str());
}
if (!ply_write_header(m_ply))
{
std::stringstream ss;
ss << "Could not write ply header";
throw pdal_error(ss.str());
}
for (PointId index = 0; index < m_pointCollector->size(); ++index)
{
for (auto dim : dimensions)
{
double value = m_pointCollector->getFieldAs<double>(dim, index);
if (!ply_write(m_ply, value))
{
std::stringstream ss;
ss << "Error writing dimension '" << Dimension::name(dim) <<
"' of point number " << index;
throw pdal_error(ss.str());
}
}
}
if (!ply_close(m_ply))
{
throw pdal_error("Error closing ply file");
}
}
PlyReader::~PlyReader()
{
if (isValid())
{
for (int i=0; i < m_data->elementCount; ++i)
{
free(m_data->elementNames[i]);
}
free(m_data->elementNames);
ply_close(m_data->plyFile);
m_data->plyFile = nullptr;
}
}
int main(void) {
long nvertices, ntriangles;
p_ply ply = ply_open("input.ply", NULL);
if (!ply) return 1;
if (!ply_read_header(ply)) return 1;
nvertices = ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 1);
ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
printf("%ld\n%ld\n", nvertices, ntriangles);
if (!ply_read(ply)) return 1;
ply_close(ply);
return 0;
}
void PLYDataWriter::write ( const char * filename )
{
assert ( mesh != NULL );
p_ply oply;
oply = ply_create( filename, PLY_ASCII, NULL, 0, NULL );
if ( oply == NULL )
{
throw std::runtime_error( "Access to output file was impossible." );
}
write_header ( oply );
write_vertices ( oply );
write_faces ( oply );
ply_close ( oply );
}
bool PlyBuffer::LoadFromPlyFile(std::wstring fileName, PlyBuffer& vbOut, std::wstring error)
{
long nvertices, ntriangles;
// Open the file
p_ply ply = ply_open(Helper::WStringtoString(fileName).c_str(), NULL, 0, NULL);
// Check that file is okay
if (!ply)
{
error = L"Failed at loading file " + fileName;
return false;
}
if (!ply_read_header(ply))
return false;
// Load info
nvertices = ply_set_read_cb(ply, "vertex", "x", vertexX, NULL, 0);
ply_set_read_cb(ply, "vertex", "y", vertexY, NULL, 0);
ply_set_read_cb(ply, "vertex", "z", vertexZ, NULL, 0);
ply_set_read_cb(ply, "vertex", "nx", vertexNX, NULL, 0);
ply_set_read_cb(ply, "vertex", "ny", vertexNY, NULL, 0);
ply_set_read_cb(ply, "vertex", "nz", vertexNZ, NULL, 0);
ply_set_read_cb(ply, "vertex", "u", vertexU, NULL, 0);
ply_set_read_cb(ply, "vertex", "v", vertexV, NULL, 1);
ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
// Set space for vertices and indices for speed
buffer.vertices.reserve(nvertices);
buffer.indices.reserve(ntriangles);
// Read file
if (!ply_read(ply))
return false;
// Close file
ply_close(ply);
//Copy it to the output
vbOut = buffer;
// Empty the vertex so that don't take up space
buffer.vertices = std::vector<PlyBuffer::Vertex>();
buffer.indices = std::vector<WORD>();
return true;
}
int MyGlWindow::loadply()
{
p_ply ply = ply_open("roof.ply", NULL, 0, NULL);
if (!ply) return 1;
if (!ply_read_header(ply)) return 1;
int nvertices = ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 0);
ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 1);
int ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
printf("%ld\n%ld\n", nvertices, ntriangles);
if (!ply_read(ply)) return 1;
ply_close(ply);
std::cout << m_points.size() << std::endl;
}
void PlyLoader::load( const optix::Matrix4x4& transform )
{
p_ply ply = ply_open( _filename.c_str(), 0);
if( !ply ) {
throw optix::Exception( "Error opening ply file (" + _filename + ")" );
}
if( !ply_read_header( ply ) ) {
throw optix::Exception( "Error parsing ply header (" + _filename + ")" );
}
ModelData data;
int nverts = ply_set_read_cb( ply, "vertex", "x", vertexCB, &data, 0);
ply_set_read_cb( ply, "vertex", "y", vertexCB, &data, 1);
ply_set_read_cb( ply, "vertex", "z", vertexCB, &data, 2);
int ntris = ply_set_read_cb(ply, "face", "vertex_indices", faceCB, &data, 0);
data.verts = new optix::float3[ nverts ];
data.tris = new optix::int3[ ntris ];
if( !ply_read( ply ) ) {
throw optix::Exception( "Error parsing ply file (" + _filename + ")" );
}
ply_close(ply);
_aabb = data.aabb;
/*
std::cerr << " done. got " << nverts << " verts and " << ntris << " tris." << std::endl;
for( int i = 0; i < 10; ++i ) {
std::cerr << " v: " << data.verts[i] << std::endl;
}
for( int i = 0; i < 10; ++i ) {
std::cerr << " f: " << data.tris[i] << std::endl;
}
*/
createGeometryInstance( data.nverts, data.verts, data.ntris, data.tris );
}
MEM_SmartPtr<BSP_TMesh>
BSP_PlyLoader::
NewMeshFromFile(
char * file_name,
MT_Vector3 &min,
MT_Vector3 &max
) {
min = MT_Vector3(MT_INFINITY,MT_INFINITY,MT_INFINITY);
max = MT_Vector3(-MT_INFINITY,-MT_INFINITY,-MT_INFINITY);
PlyProperty vert_props[] = { /* list of property information for a vertex */
{"x", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,x), 0, 0, 0, 0},
{"y", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,y), 0, 0, 0, 0},
{"z", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,z), 0, 0, 0, 0},
};
PlyProperty face_props[] = { /* list of property information for a vertex */
{"vertex_indices", PLY_INT, PLY_INT, offsetof(LoadFace,verts),
1, PLY_UCHAR, PLY_UCHAR, offsetof(LoadFace,nverts)},
};
MEM_SmartPtr<BSP_TMesh> mesh = new BSP_TMesh;
if (mesh == NULL) return NULL;
int i,j;
PlyFile *ply;
int nelems;
char **elist;
int file_type;
float version;
int nprops;
int num_elems;
PlyProperty **plist;
char *elem_name;
LoadVertex load_vertex;
LoadFace load_face;
/* open a PLY file for reading */
ply = ply_open_for_reading(
file_name,
&nelems,
&elist,
&file_type,
&version
);
if (ply == NULL) return NULL;
/* go through each kind of element that we learned is in the file */
/* and read them */
for (i = 0; i < nelems; i++) {
/* get the description of the first element */
elem_name = elist[i];
plist = ply_get_element_description (ply, elem_name, &num_elems, &nprops);
/* print the name of the element, for debugging */
/* if we're on vertex elements, read them in */
if (equal_strings ("vertex", elem_name)) {
/* set up for getting vertex elements */
ply_get_property (ply, elem_name, &vert_props[0]);
ply_get_property (ply, elem_name, &vert_props[1]);
ply_get_property (ply, elem_name, &vert_props[2]);
// make some memory for the vertices
mesh->VertexSet().reserve(num_elems);
/* grab all the vertex elements */
for (j = 0; j < num_elems; j++) {
/* grab and element from the file */
ply_get_element (ply, (void *)&load_vertex);
// pass the vertex into the mesh builder.
if (load_vertex.x < min.x()) {
min.x() = load_vertex.x;
} else
if (load_vertex.x > max.x()) {
max.x()= load_vertex.x;
}
if (load_vertex.y < min.y()) {
min.y() = load_vertex.y;
} else
if (load_vertex.y > max.y()) {
max.y()= load_vertex.y;
}
if (load_vertex.z < min.z()) {
min.z() = load_vertex.z;
} else
if (load_vertex.z > max.z()) {
max.z()= load_vertex.z;
}
BSP_TVertex my_vert;
my_vert.m_pos = MT_Vector3(load_vertex.x,load_vertex.y,load_vertex.z);
mesh->VertexSet().push_back(my_vert);
}
}
/* if we're on face elements, read them in */
if (equal_strings ("face", elem_name)) {
/* set up for getting face elements */
ply_get_property (ply, elem_name, &face_props[0]);
/* grab all the face elements */
for (j = 0; j < num_elems; j++) {
ply_get_element (ply, (void *)&load_face);
int v;
for (v = 2; v< load_face.nverts; v++) {
BSP_TFace f;
f.m_verts[0] = load_face.verts[0];
f.m_verts[1] = load_face.verts[v-1];
f.m_verts[2] = load_face.verts[v];
mesh->BuildNormal(f);
mesh->FaceSet().push_back(f);
}
// free up the memory this pile of shit used to allocate the polygon's vertices
free (load_face.verts);
}
}
}
/* close the PLY file */
ply_close (ply);
return mesh;
}
void write_ply(const std::string &filename, const MatrixXu &F,
const MatrixXf &V, const MatrixXf &N, const MatrixXf &Nf, const MatrixXf &UV,
const MatrixXf &C, const ProgressCallback &progress) {
auto message_cb = [](p_ply ply, const char *msg) {
cerr << "rply: " << msg << endl;
};
Timer<> timer;
cout << "Writing \"" << filename << "\" (V=" << V.cols()
<< ", F=" << F.cols() << ") .. ";
cout.flush();
if (N.size() > 0 && Nf.size() > 0)
throw std::runtime_error("Please specify either face or vertex normals but not both!");
p_ply ply = ply_create(filename.c_str(), PLY_DEFAULT, message_cb, 0, nullptr);
if (!ply)
throw std::runtime_error("Unable to write PLY file!");
ply_add_comment(ply, "Generated by Instant Meshes");
ply_add_element(ply, "vertex", V.cols());
ply_add_scalar_property(ply, "x", PLY_FLOAT);
ply_add_scalar_property(ply, "y", PLY_FLOAT);
ply_add_scalar_property(ply, "z", PLY_FLOAT);
if (N.size() > 0) {
ply_add_scalar_property(ply, "nx", PLY_FLOAT);
ply_add_scalar_property(ply, "ny", PLY_FLOAT);
ply_add_scalar_property(ply, "nz", PLY_FLOAT);
if (N.cols() != V.cols() || N.rows() != 3)
throw std::runtime_error("Vertex normal matrix has incorrect size");
}
if (UV.size() > 0) {
ply_add_scalar_property(ply, "u", PLY_FLOAT);
ply_add_scalar_property(ply, "v", PLY_FLOAT);
if (UV.cols() != V.cols() || UV.rows() != 2)
throw std::runtime_error("Texture coordinate matrix has incorrect size");
}
if (C.size() > 0) {
ply_add_scalar_property(ply, "red", PLY_FLOAT);
ply_add_scalar_property(ply, "green", PLY_FLOAT);
ply_add_scalar_property(ply, "blue", PLY_FLOAT);
if (C.cols() != V.cols() || (C.rows() != 3 && C.rows() != 4))
throw std::runtime_error("Color matrix has incorrect size");
}
/* Check for irregular faces */
std::map<uint32_t, std::pair<uint32_t, std::map<uint32_t, uint32_t>>> irregular;
size_t nIrregular = 0;
if (F.rows() == 4) {
for (uint32_t f=0; f<F.cols(); ++f) {
if (F(2, f) == F(3, f)) {
nIrregular++;
auto &value = irregular[F(2, f)];
value.first = f;
value.second[F(0, f)] = F(1, f);
}
}
}
ply_add_element(ply, "face", F.cols() - nIrregular + irregular.size());
ply_add_list_property(ply, "vertex_indices", PLY_UINT8, PLY_INT);
if (Nf.size() > 0) {
ply_add_scalar_property(ply, "nx", PLY_FLOAT);
ply_add_scalar_property(ply, "ny", PLY_FLOAT);
ply_add_scalar_property(ply, "nz", PLY_FLOAT);
if (Nf.cols() != F.cols() || Nf.rows() != 3)
throw std::runtime_error("Face normal matrix has incorrect size");
}
ply_write_header(ply);
for (uint32_t j=0; j<V.cols(); ++j) {
for (uint32_t i=0; i<V.rows(); ++i)
ply_write(ply, V(i, j));
if (N.size() > 0) {
for (uint32_t i=0; i<N.rows(); ++i)
ply_write(ply, N(i, j));
}
if (UV.size() > 0) {
for (uint32_t i=0; i<UV.rows(); ++i)
ply_write(ply, UV(i, j));
}
if (C.size() > 0) {
for (uint32_t i=0; i<std::min(3u, (uint32_t) C.rows()); ++i)
ply_write(ply, C(i, j));
}
if (progress && j % 500000 == 0)
progress("Writing vertex data", j / (Float) V.cols());
}
for (uint32_t f=0; f<F.cols(); ++f) {
if (F.rows() == 4 && F(2, f) == F(3, f))
continue;
ply_write(ply, F.rows());
for (uint32_t i=0; i<F.rows(); ++i)
ply_write(ply, F(i, f));
if (Nf.size() > 0) {
for (uint32_t i=0; i<Nf.rows(); ++i)
ply_write(ply, Nf(i, f));
}
if (progress && f % 500000 == 0)
progress("Writing face data", f / (Float) F.cols());
}
for (auto item : irregular) {
auto face = item.second;
uint32_t v = face.second.begin()->first, first = v;
ply_write(ply, face.second.size());
while (true) {
ply_write(ply, v);
v = face.second[v];
if (v == first)
break;
}
if (Nf.size() > 0) {
for (uint32_t i=0; i<Nf.rows(); ++i)
ply_write(ply, Nf(i, face.first));
}
}
ply_close(ply);
cout << "done. (";
if (irregular.size() > 0)
cout << irregular.size() << " irregular faces, ";
cout << "took " << timeString(timer.value()) << ")" << endl;
}
void load_ply(const std::string &filename, MatrixXu &F, MatrixXf &V, bool load_faces,
const ProgressCallback &progress) {
auto message_cb = [](p_ply ply, const char *msg) {
cerr << "rply: " << msg << endl;
};
Timer<> timer;
cout << "Loading \"" << filename << "\" .. ";
cout.flush();
p_ply ply = ply_open(filename.c_str(), message_cb, 0, nullptr);
if (!ply)
throw std::runtime_error("Unable to open PLY file \"" + filename + "\"!");
if (!ply_read_header(ply)) {
ply_close(ply);
throw std::runtime_error("Unable to open PLY header of \"" + filename + "\"!");
}
p_ply_element element = nullptr;
uint32_t vertexCount = 0, faceCount = 0;
/* Inspect the structure of the PLY file */
while ((element = ply_get_next_element(ply, element)) != nullptr) {
const char *name;
long nInstances;
ply_get_element_info(element, &name, &nInstances);
if (!strcmp(name, "vertex"))
vertexCount = (uint32_t) nInstances;
else if (!strcmp(name, "face"))
faceCount = (uint32_t) nInstances;
}
if (vertexCount == 0 && faceCount == 0)
throw std::runtime_error("PLY file \"" + filename + "\" is invalid! No face/vertex/elements found!");
if (load_faces)
F.resize(3, faceCount);
V.resize(3, vertexCount);
struct VertexCallbackData {
MatrixXf &V;
const ProgressCallback &progress;
VertexCallbackData(MatrixXf &V, const ProgressCallback &progress)
: V(V), progress(progress) {}
};
struct FaceCallbackData {
MatrixXu &F;
const ProgressCallback &progress;
FaceCallbackData(MatrixXu &F, const ProgressCallback &progress)
: F(F), progress(progress) {}
};
auto rply_vertex_cb = [](p_ply_argument argument) -> int {
VertexCallbackData *data;
long index, coord;
ply_get_argument_user_data(argument, (void **) &data, &coord);
ply_get_argument_element(argument, nullptr, &index);
data->V(coord, index) = (Float) ply_get_argument_value(argument);
if (data->progress && coord == 0 && index % 500000 == 0)
data->progress("Loading vertex data", index / (Float) data->V.cols());
return 1;
};
auto rply_index_cb = [](p_ply_argument argument) -> int {
FaceCallbackData *data;
long length, value_index, index;
ply_get_argument_property(argument, nullptr, &length, &value_index);
if (length != 3)
throw std::runtime_error("Only triangle faces are supported!");
ply_get_argument_user_data(argument, (void **) &data, nullptr);
ply_get_argument_element(argument, nullptr, &index);
if (value_index >= 0)
data->F(value_index, index) = (uint32_t) ply_get_argument_value(argument);
if (data->progress && value_index == 0 && index % 500000 == 0)
data->progress("Loading face data", index / (Float) data->F.cols());
return 1;
};
VertexCallbackData vcbData(V, progress);
FaceCallbackData fcbData(F, progress);
if (!ply_set_read_cb(ply, "vertex", "x", rply_vertex_cb, &vcbData, 0) ||
!ply_set_read_cb(ply, "vertex", "y", rply_vertex_cb, &vcbData, 1) ||
!ply_set_read_cb(ply, "vertex", "z", rply_vertex_cb, &vcbData, 2)) {
ply_close(ply);
throw std::runtime_error("PLY file \"" + filename + "\" does not contain vertex position data!");
}
if (load_faces) {
if (!ply_set_read_cb(ply, "face", "vertex_indices", rply_index_cb, &fcbData, 0)) {
ply_close(ply);
throw std::runtime_error("PLY file \"" + filename + "\" does not contain vertex indices!");
}
}
if (!ply_read(ply)) {
ply_close(ply);
throw std::runtime_error("Error while loading PLY data from \"" + filename + "\"!");
}
ply_close(ply);
cout << "done. (V=" << vertexCount;
if (load_faces)
cout << ", F=" << faceCount;
cout << ", took " << timeString(timer.value()) << ")" << endl;
}
IGL_INLINE bool igl::writePLY(
const std::string & filename,
const Eigen::PlainObjectBase<DerivedV> & V,
const Eigen::PlainObjectBase<DerivedF> & F,
const Eigen::PlainObjectBase<DerivedN> & N,
const Eigen::PlainObjectBase<DerivedUV> & UV,
const bool ascii)
{
// Largely based on obj2ply.c
typedef struct Vertex
{
double x,y,z,w; /* position */
double nx,ny,nz; /* surface normal */
double s,t; /* texture coordinates */
} Vertex;
typedef struct Face
{
unsigned char nverts; /* number of vertex indices in list */
int *verts; /* vertex index list */
} Face;
PlyProperty vert_props[] =
{ /* list of property information for a vertex */
{"x", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,x), 0, 0, 0, 0},
{"y", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,y), 0, 0, 0, 0},
{"z", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,z), 0, 0, 0, 0},
{"nx", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,nx), 0, 0, 0, 0},
{"ny", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,ny), 0, 0, 0, 0},
{"nz", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,nz), 0, 0, 0, 0},
{"s", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,s), 0, 0, 0, 0},
{"t", PLY_DOUBLE, PLY_DOUBLE, offsetof(Vertex,t), 0, 0, 0, 0},
};
PlyProperty face_props[] =
{ /* list of property information for a face */
{"vertex_indices", PLY_INT, PLY_INT, offsetof(Face,verts),
1, PLY_UCHAR, PLY_UCHAR, offsetof(Face,nverts)},
};
const bool has_normals = N.rows() > 0;
const bool has_texture_coords = UV.rows() > 0;
std::vector<Vertex> vlist(V.rows());
std::vector<Face> flist(F.rows());
for(size_t i = 0;i<(size_t)V.rows();i++)
{
vlist[i].x = V(i,0);
vlist[i].y = V(i,1);
vlist[i].z = V(i,2);
if(has_normals)
{
vlist[i].nx = N(i,0);
vlist[i].ny = N(i,1);
vlist[i].nz = N(i,2);
}
if(has_texture_coords)
{
vlist[i].s = UV(i,0);
vlist[i].t = UV(i,1);
}
}
for(size_t i = 0;i<(size_t)F.rows();i++)
{
flist[i].nverts = F.cols();
flist[i].verts = new int[F.cols()];
for(size_t c = 0;c<(size_t)F.cols();c++)
{
flist[i].verts[c] = F(i,c);
}
}
const char * elem_names[] = {"vertex","face"};
FILE * fp = fopen(filename.c_str(),"w");
if(fp==NULL)
{
return false;
}
PlyFile * ply = ply_write(fp, 2,elem_names,
(ascii ? PLY_ASCII : PLY_BINARY_LE));
if(ply==NULL)
{
return false;
}
std::vector<PlyProperty> plist;
plist.push_back(vert_props[0]);
plist.push_back(vert_props[1]);
plist.push_back(vert_props[2]);
if (has_normals)
{
plist.push_back(vert_props[3]);
plist.push_back(vert_props[4]);
plist.push_back(vert_props[5]);
}
if (has_texture_coords)
{
plist.push_back(vert_props[6]);
plist.push_back(vert_props[7]);
}
ply_describe_element(ply, "vertex", V.rows(),plist.size(),
&plist[0]);
ply_describe_element(ply, "face", F.rows(),1,&face_props[0]);
ply_header_complete(ply);
int native_binary_type = get_native_binary_type2();
ply_put_element_setup(ply, "vertex");
for(const auto v : vlist)
{
ply_put_element(ply, (void *) &v, &native_binary_type);
}
ply_put_element_setup(ply, "face");
for(const auto f : flist)
{
ply_put_element(ply, (void *) &f, &native_binary_type);
}
ply_close(ply);
for(size_t i = 0;i<(size_t)F.rows();i++)
{
delete[] flist[i].verts;
}
return true;
}
void
read_file(FILE *inFile)
{
int i,j,k;
PlyFile *ply;
int nprops;
int num_elems;
PlyProperty **plist;
char *elem_name;
float version;
int get_nx,get_ny,get_nz;
/*** Read in the original PLY object ***/
ply = ply_read (inFile, &nelems, &elist);
ply_get_info (ply, &version, &file_type);
for (i = 0; i < nelems; i++) {
/* get the description of the first element */
elem_name = elist[i];
plist = ply_get_element_description (ply, elem_name, &num_elems, &nprops);
if (equal_strings ("vertex", elem_name)) {
/* see if vertex holds any normal information */
get_nx = get_ny = get_nz = 0;
for (j = 0; j < nprops; j++) {
if (equal_strings ("nx", plist[j]->name)) get_nx = 1;
if (equal_strings ("ny", plist[j]->name)) get_ny = 1;
if (equal_strings ("nz", plist[j]->name)) get_nz = 1;
}
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * num_elems);
nverts = num_elems;
/* set up for getting vertex elements */
ply_get_property (ply, elem_name, &vert_props[0]);
ply_get_property (ply, elem_name, &vert_props[1]);
ply_get_property (ply, elem_name, &vert_props[2]);
if (get_nx) ply_get_property (ply, elem_name, &vert_props[3]);
if (get_ny) ply_get_property (ply, elem_name, &vert_props[4]);
if (get_nz) ply_get_property (ply, elem_name, &vert_props[5]);
vert_other = ply_get_other_properties (ply, elem_name,
offsetof(Vertex,other_props));
/* grab all the vertex elements */
for (j = 0; j < num_elems; j++) {
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
ply_get_element (ply, (void *) vlist[j]);
}
}
else if (equal_strings ("face", elem_name)) {
/* create a list to hold all the face elements */
flist = (Face **) malloc (sizeof (Face *) * num_elems);
nfaces = num_elems;
/* set up for getting face elements */
ply_get_property (ply, elem_name, &face_props[0]);
face_other = ply_get_other_properties (ply, elem_name,
offsetof(Face,other_props));
/* grab all the face elements */
for (j = 0; j < num_elems; j++) {
flist[j] = (Face *) malloc (sizeof (Face));
ply_get_element (ply, (void *) flist[j]);
}
}
else
other_elements = ply_get_other_element (ply, elem_name, num_elems);
}
comments = ply_get_comments (ply, &num_comments);
obj_info = ply_get_obj_info (ply, &num_obj_info);
ply_close (ply);
}
bool save(const std::string& filename) {
if(map_ == nil) {
Logger::err("PlyMeshSave") << "mesh is null" << std::endl ;
return false ;
}
p_ply ply = ply_create(filename.c_str(), PLY_LITTLE_ENDIAN, nil, 0, nil) ;
if(ply == nil) {
Logger::err("PlyMeshSave") << filename << ": could not open" << std::endl ;
return false ;
}
//////////////////////////////////////////////////////////////////////////
if (!ply_add_comment(ply, "saved by [email protected]")) {
Logger::err("PlyMeshSave") << "unable to add comment" << std::endl ;
ply_close(ply) ;
return false ;
}
int num_v = map_->size_of_vertices();
if (!ply_add_element(ply, "vertex", num_v)) {
Logger::err("PlyMeshSave") << "unable to add element \'vertex\'" << std::endl ;
ply_close(ply) ;
return false ;
}
e_ply_type length_type, value_type;
length_type = value_type = static_cast<e_ply_type>(-1);
std::string pos[3] = { "x", "y", "z" };
for (unsigned int i=0; i<3; ++i) {
if (!ply_add_property(ply, pos[i].c_str(), PLY_FLOAT, length_type, value_type)) {
Logger::err("PlyMeshSave") << "unable to add property \'" << pos[i] << "\'" << std::endl ;
ply_close(ply) ;
return false ;
}
}
MapVertexAttribute<Color> vertex_color;
vertex_color.bind_if_defined(const_cast<Map*>(map_), "color") ;
if (vertex_color.is_bound()) {
std::string color[4] = { "red", "green", "blue", "alpha" };
for (unsigned int i=0; i<4; ++i) {
if (!ply_add_property(ply, color[i].c_str(), PLY_UCHAR, length_type, value_type)) {
Logger::err("PlyMeshSave") << "unable to add property \'" << color[i] << "\'" << std::endl ;
ply_close(ply) ;
return false ;
}
}
}
int num_f = map_->size_of_facets();
if (!ply_add_element(ply, "face", num_f)) {
Logger::err("PlyMeshSave") << "unable to add element \'face\'" << std::endl ;
ply_close(ply) ;
return false ;
}
if (!ply_add_property(ply, "vertex_indices", PLY_LIST, PLY_UCHAR, PLY_INT)) {
Logger::err("PlyMeshSave") << "unable to add property \'vertex_indices\'" << std::endl ;
ply_close(ply) ;
return false ;
}
if(!ply_write_header(ply)) {
Logger::err("PlyMeshSave") << filename << ": invalid PLY file" << std::endl ;
ply_close(ply) ;
return false ;
}
//////////////////////////////////////////////////////////////////////////
FOR_EACH_VERTEX_CONST(Map, map_, it) {
const vec3& p = it->point();
ply_write(ply, p.x);
ply_write(ply, p.y);
ply_write(ply, p.z);
if (vertex_color.is_bound()) {
const Color& c = vertex_color[it];
double r = c.r() * color_mult_; ogf_clamp(r, 0.0, 255.0);
double g = c.g() * color_mult_; ogf_clamp(g, 0.0, 255.0);
double b = c.b() * color_mult_; ogf_clamp(b, 0.0, 255.0);
double a = c.a() * color_mult_; ogf_clamp(a, 0.0, 255.0);
ply_write(ply, r);
ply_write(ply, g);
ply_write(ply, b);
ply_write(ply, a);
}
}
// ply files numbering starts with 0
Attribute<Map::Vertex, int> vertex_id(map_->vertex_attribute_manager());
MapEnumerator::enumerate_vertices(const_cast<Map*>(map_), vertex_id, 0);
FOR_EACH_FACET_CONST(Map, map_, it) {
ply_write(ply, it->nb_vertices());
Map::Halfedge* h = it->halfedge();
do
{
int id = vertex_id[h->vertex()];
ply_write(ply, id);
h = h->next();
} while (h != it->halfedge());
}
/*******************************************************************************
* Name: main
* Description:
******************************************************************************/
int main( void ) {
int i;
/* Create new PLY file. */
p_ply oply = ply_create( "new.ply", PLY_ASCII, NULL, 0, NULL );
if ( !oply ) {
fprintf( stderr, "ERROR: Could not create »new.ply«\n" );
return EXIT_FAILURE;
}
/* Add object information to PLY. */
if ( !ply_add_obj_info( oply, "This is just a test." ) ) {
fprintf( stderr, "ERROR: Could not add object info.\n" );
return EXIT_FAILURE;
}
/* Add a comment, too. */
if ( !ply_add_comment( oply, "Just some comment…" ) ) {
fprintf( stderr, "ERROR: Could not add comment.\n" );
return EXIT_FAILURE;
}
/* Add vertex element. We want to add 9999 vertices. */
if ( !ply_add_element( oply, "vertex", 99999 ) ) {
fprintf( stderr, "ERROR: Could not add element.\n" );
return EXIT_FAILURE;
}
/* Add vertex properties: x, y, z, r, g, b */
if ( !ply_add_property( oply, "x", PLY_FLOAT, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
if ( !ply_add_property( oply, "y", PLY_FLOAT, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
if ( !ply_add_property( oply, "z", PLY_FLOAT, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
if ( !ply_add_property( oply, "red", PLY_UCHAR, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
if ( !ply_add_property( oply, "green", PLY_UCHAR, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
if ( !ply_add_property( oply, "blue", PLY_UCHAR, 0, 0 ) ) {
fprintf( stderr, "ERROR: Could not add property x.\n" );
return EXIT_FAILURE;
}
/* Write header to file */
if ( !ply_write_header( oply ) ) {
fprintf( stderr, "ERROR: Could not write header.\n" );
return EXIT_FAILURE;
}
/* Now we generate random data to add to the file: */
srand ( time( NULL ) );
for ( i = 0; i < 99999; i++ ) {
ply_write( oply, (double) ( rand() % 10000 ) / 10.0 ); /* x */
ply_write( oply, (double) ( rand() % 10000 ) / 10.0 ); /* y */
ply_write( oply, (double) ( rand() % 10000 ) / 10.0 ); /* z */
ply_write( oply, rand() % 256 ); /* red */
ply_write( oply, rand() % 256 ); /* blue */
ply_write( oply, rand() % 256 ); /* green */
}
if ( !ply_close( oply ) ) {
fprintf( stderr, "ERROR: Could not close file.\n" );
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
Geometry::Geometry(const string &fileName) {
p_ply plyfile = ply_open(fileName.c_str(), NULL);
if (!plyfile) {
stringstream ss;
ss << "Unable to read PLY mesh file '" << fileName << "'";
throw runtime_error(ss.str());
}
if (!ply_read_header(plyfile)) {
stringstream ss;
ss << "Unable to read PLY header from '" << fileName << "'";
throw runtime_error(ss.str());
}
Point *p;
long plyNbVerts = ply_set_read_cb(plyfile, "vertex", "x", VertexCB, &p, 0);
ply_set_read_cb(plyfile, "vertex", "y", VertexCB, &p, 1);
ply_set_read_cb(plyfile, "vertex", "z", VertexCB, &p, 2);
if (plyNbVerts <= 0) {
stringstream ss;
ss << "No vertices found in '" << fileName << "'";
throw runtime_error(ss.str());
}
Triangle *vi;
long plyNbTris = ply_set_read_cb(plyfile, "face", "vertex_indices", FaceCB, &vi, 0);
if (plyNbTris <= 0) {
stringstream ss;
ss << "No triangles found in '" << fileName << "'";
throw runtime_error(ss.str());
}
Normal *n;
long plyNbNormals = ply_set_read_cb(plyfile, "vertex", "nx", NormalCB, &n, 0);
ply_set_read_cb(plyfile, "vertex", "ny", NormalCB, &n, 1);
ply_set_read_cb(plyfile, "vertex", "nz", NormalCB, &n, 2);
if ((plyNbNormals > 0) && (plyNbNormals != plyNbVerts)) {
stringstream ss;
ss << "Wrong count of normals in '" << fileName << "'";
throw runtime_error(ss.str());
}
RGB *c;
long plyNbColors = ply_set_read_cb(plyfile, "vertex", "red", ColorCB, &c, 0);
ply_set_read_cb(plyfile, "vertex", "green", ColorCB, &c, 1);
ply_set_read_cb(plyfile, "vertex", "blue", ColorCB, &c, 2);
if ((plyNbColors <= 0) || ((plyNbColors > 0) && (plyNbColors != plyNbVerts))) {
stringstream ss;
ss << "Wrong count of colors in '" << fileName << "'";
throw runtime_error(ss.str());
}
p = new Point[plyNbVerts];
vi = new Triangle[plyNbTris];
c = new RGB[plyNbColors];
n = new Normal[plyNbVerts];
if (!ply_read(plyfile)) {
stringstream ss;
ss << "Unable to parse PLY file '" << fileName << "'";
delete[] p;
delete[] vi;
delete[] c;
delete[] n;
throw runtime_error(ss.str());
}
ply_close(plyfile);
vertexCount = plyNbVerts;
triangleCount = plyNbTris;
vertices = p;
triangles = vi;
vertNormals = n;
vertColors = c;
// Scale vertex colors
for (unsigned int i = 0; i < vertexCount; ++i)
c[i] *= 0.75f;
// It looks like normals exported by Blender are bugged
for (unsigned int i = 0; i < vertexCount; ++i)
vertNormals[i] = Normal(0.f, 0.f, 0.f);
for (unsigned int i = 0; i < triangleCount; ++i) {
const Vector e1 = vertices[triangles[i].v[1]] - vertices[triangles[i].v[0]];
const Vector e2 = vertices[triangles[i].v[2]] - vertices[triangles[i].v[0]];
const Normal n = Normal(Normalize(Cross(e1, e2)));
vertNormals[triangles[i].v[0]] += n;
vertNormals[triangles[i].v[1]] += n;
vertNormals[triangles[i].v[2]] += n;
}
int printedWarning = 0;
for (unsigned int i = 0; i < vertexCount; ++i) {
vertNormals[i] = Normalize(vertNormals[i]);
// Check for degenerate triangles/normals, they can freeze the GPU
if (isnan(vertNormals[i].x) || isnan(vertNormals[i].y) || isnan(vertNormals[i].z)) {
if (printedWarning < 15) {
cerr << "The model contains a degenerate normal (index " << i << ")" << endl;
++printedWarning;
} else if (printedWarning == 15) {
cerr << "The model contains more degenerate normals" << endl;
++printedWarning;
}
vertNormals[i] = Normal(0.f, 0.f, 1.f);
}
}
/*if (plyNbNormals <= 0) {
// Calculate normals
for (unsigned int i = 0; i < triangleCount; ++i) {
const Vector e1 = vertices[triangles[i].v[1]] - vertices[triangles[i].v[0]];
const Vector e2 = vertices[triangles[i].v[2]] - vertices[triangles[i].v[0]];
const Normal n = Normal(Normalize(Cross(e1, e2)));
vertNormals[triangles[i].v[0]] = n;
vertNormals[triangles[i].v[1]] = n;
vertNormals[triangles[i].v[2]] = n;
}
}*/
}
LOD_Decimation_InfoPtr
NewVertsFromFile(
char * file_name,
MT_Vector3 &min,
MT_Vector3 &max
) {
min = MT_Vector3(MT_INFINITY,MT_INFINITY,MT_INFINITY);
max = MT_Vector3(-MT_INFINITY,-MT_INFINITY,-MT_INFINITY);
PlyProperty vert_props[] = { /* list of property information for a vertex */
{"x", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,x), 0, 0, 0, 0},
{"y", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,y), 0, 0, 0, 0},
{"z", PLY_FLOAT, PLY_FLOAT, offsetof(LoadVertex,z), 0, 0, 0, 0},
};
PlyProperty face_props[] = { /* list of property information for a vertex */
{"intensity", PLY_UCHAR, PLY_UCHAR, offsetof(LoadFace,intensity), 0, 0, 0, 0},
{"vertex_indices", PLY_INT, PLY_INT, offsetof(LoadFace,verts),
1, PLY_UCHAR, PLY_UCHAR, offsetof(LoadFace,nverts)},
};
#if 0
MEM_SmartPtr<std::vector<float> > verts = new std::vector<float>;
MEM_SmartPtr<std::vector<float> > vertex_normals = new std::vector<float>;
MEM_SmartPtr<std::vector<int> > faces = new std::vector<int>;
#else
std::vector<float>* verts = new std::vector<float>;
std::vector<float>* vertex_normals = new std::vector<float>;
std::vector<int> * faces = new std::vector<int>;
#endif
int i,j;
PlyFile *ply;
int nelems;
char **elist;
int file_type;
float version;
int nprops;
int num_elems;
PlyProperty **plist;
char *elem_name;
LoadVertex load_vertex;
LoadFace load_face;
/* open a PLY file for reading */
ply = ply_open_for_reading(file_name, &nelems, &elist, &file_type, &version);
if (ply == NULL) return NULL;
/* go through each kind of element that we learned is in the file */
/* and read them */
for (i = 0; i < nelems; i++) {
/* get the description of the first element */
elem_name = elist[i];
plist = ply_get_element_description (ply, elem_name, &num_elems, &nprops);
/* print the name of the element, for debugging */
/* if we're on vertex elements, read them in */
if (equal_strings ("vertex", elem_name)) {
/* set up for getting vertex elements */
ply_get_property (ply, elem_name, &vert_props[0]);
ply_get_property (ply, elem_name, &vert_props[1]);
ply_get_property (ply, elem_name, &vert_props[2]);
// make some memory for the vertices
verts->reserve(num_elems);
/* grab all the vertex elements */
for (j = 0; j < num_elems; j++) {
/* grab and element from the file */
ply_get_element (ply, (void *)&load_vertex);
// pass the vertex into the mesh builder.
if (load_vertex.x < min.x()) {
min.x() = load_vertex.x;
} else
if (load_vertex.x > max.x()) {
max.x()= load_vertex.x;
}
if (load_vertex.y < min.y()) {
min.y() = load_vertex.y;
} else
if (load_vertex.y > max.y()) {
max.y()= load_vertex.y;
}
if (load_vertex.z < min.z()) {
min.z() = load_vertex.z;
} else
if (load_vertex.z > max.z()) {
max.z()= load_vertex.z;
}
verts->push_back(load_vertex.x);
verts->push_back(load_vertex.y);
verts->push_back(load_vertex.z);
vertex_normals->push_back(1.0f);
vertex_normals->push_back(0.0f);
vertex_normals->push_back(0.0f);
}
}
/* if we're on face elements, read them in */
if (equal_strings ("face", elem_name)) {
/* set up for getting face elements */
// ply_get_property (ply, elem_name, &face_props[0]);
ply_get_property (ply, elem_name, &face_props[1]);
/* grab all the face elements */
for (j = 0; j < num_elems; j++) {
ply_get_element (ply, (void *)&load_face);
faces->push_back(load_face.verts[0]);
faces->push_back(load_face.verts[1]);
faces->push_back(load_face.verts[2]);
// free up the memory this pile of shit used to allocate the polygon's vertices
free (load_face.verts);
}
}
}
/* close the PLY file */
ply_close (ply);
LOD_Decimation_InfoPtr output = new LOD_Decimation_Info;
output->vertex_buffer = verts->begin();
output->vertex_num = verts->size()/3;
output->triangle_index_buffer = faces->begin();
output->face_num = faces->size()/3;
output->intern = NULL;
output->vertex_normal_buffer = vertex_normals->begin();
// memory leaks 'r' us
#if 0
verts.Release();
vertex_normals.Release();
faces.Release();
#endif
return output;
}
read_test()
{
int i,j,k;
PlyFile *ply;
int nelems;
char **elist;
int file_type;
float version;
int nprops;
int num_elems;
PlyProperty **plist;
Vertex **vlist;
Face **flist;
char *elem_name;
int num_comments;
char **comments;
int num_obj_info;
char **obj_info;
/* open a PLY file for reading */
ply = ply_open_for_reading("test", &nelems, &elist, &file_type, &version);
/* print what we found out about the file */
printf ("version %f\n", version);
printf ("type %d\n", file_type);
/* go through each kind of element that we learned is in the file */
/* and read them */
for (i = 0; i < nelems; i++) {
/* get the description of the first element */
elem_name = elist[i];
plist = ply_get_element_description (ply, elem_name, &num_elems, &nprops);
/* print the name of the element, for debugging */
printf ("element %s %d\n", elem_name, num_elems);
/* if we're on vertex elements, read them in */
if (equal_strings ("vertex", elem_name)) {
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * num_elems);
/* set up for getting vertex elements */
ply_get_property (ply, elem_name, &vert_props[0]);
ply_get_property (ply, elem_name, &vert_props[1]);
ply_get_property (ply, elem_name, &vert_props[2]);
/* grab all the vertex elements */
for (j = 0; j < num_elems; j++) {
/* grab and element from the file */
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
ply_get_element (ply, (void *) vlist[j]);
/* print out vertex x,y,z for debugging */
printf ("vertex: %g %g %g\n", vlist[j]->x, vlist[j]->y, vlist[j]->z);
}
}
/* if we're on face elements, read them in */
if (equal_strings ("face", elem_name)) {
/* create a list to hold all the face elements */
flist = (Face **) malloc (sizeof (Face *) * num_elems);
/* set up for getting face elements */
ply_get_property (ply, elem_name, &face_props[0]);
ply_get_property (ply, elem_name, &face_props[1]);
/* grab all the face elements */
for (j = 0; j < num_elems; j++) {
/* grab and element from the file */
flist[j] = (Face *) malloc (sizeof (Face));
ply_get_element (ply, (void *) flist[j]);
/* print out face info, for debugging */
printf ("face: %d, list = ", flist[j]->intensity);
for (k = 0; k < flist[j]->nverts; k++)
printf ("%d ", flist[j]->verts[k]);
printf ("\n");
}
}
/* print out the properties we got, for debugging */
for (j = 0; j < nprops; j++)
printf ("property %s\n", plist[j]->name);
}
/* grab and print out the comments in the file */
comments = ply_get_comments (ply, &num_comments);
for (i = 0; i < num_comments; i++)
printf ("comment = '%s'\n", comments[i]);
/* grab and print out the object information */
obj_info = ply_get_obj_info (ply, &num_obj_info);
for (i = 0; i < num_obj_info; i++)
printf ("obj_info = '%s'\n", obj_info[i]);
/* close the PLY file */
ply_close (ply);
}