//
// Written by Curtis Olson, started January 2000.
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
//
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
#include <simgear/compiler.h>
+#include <simgear/debug/logstream.hxx>
#include <stdio.h>
#include <time.h>
+#include <cstring>
+#include <cstdlib> // for system()
+#include <cassert>
#include <vector>
-#include STL_STRING
+#include <string>
+#include <iostream>
+#include <bitset>
#include <simgear/bucket/newbucket.hxx>
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/math/SGGeometry.hxx>
+#include <simgear/structure/exception.hxx>
#include "lowlevel.hxx"
#include "sg_binobj.hxx"
-SG_USING_STD( string );
-SG_USING_STD( vector );
-
-#if !defined (SG_HAVE_NATIVE_SGI_COMPILERS)
-SG_USING_STD( cout );
-SG_USING_STD( endl );
-#endif
-
+using std::string;
+using std::vector;
+using std::cout;
+using std::endl;
-enum {
+enum sgObjectTypes {
SG_BOUNDING_SPHERE = 0,
SG_VERTEX_LIST = 1,
SG_NORMAL_LIST = 2,
SG_TEXCOORD_LIST = 3,
+ SG_COLOR_LIST = 4,
+ SG_VA_FLOAT_LIST = 5,
+ SG_VA_INTEGER_LIST = 6,
+
+ SG_POINTS = 9,
SG_TRIANGLE_FACES = 10,
SG_TRIANGLE_STRIPS = 11,
SG_TRIANGLE_FANS = 12
-} tgObjectTypes;
+};
+
+enum sgIndexTypes {
+ SG_IDX_VERTICES = 0x01,
+ SG_IDX_NORMALS = 0x02,
+ SG_IDX_COLORS = 0x04,
+ SG_IDX_TEXCOORDS_0 = 0x08,
+ SG_IDX_TEXCOORDS_1 = 0x10,
+ SG_IDX_TEXCOORDS_2 = 0x20,
+ SG_IDX_TEXCOORDS_3 = 0x40,
+};
-enum {
- SG_MATERIAL = 0
-} tgPropertyTypes;
+enum sgVertexAttributeTypes {
+ // vertex attributes
+ SG_VA_INTEGER_0 = 0x00000001,
+ SG_VA_INTEGER_1 = 0x00000002,
+ SG_VA_INTEGER_2 = 0x00000004,
+ SG_VA_INTEGER_3 = 0x00000008,
+
+ SG_VA_FLOAT_0 = 0x00000100,
+ SG_VA_FLOAT_1 = 0x00000200,
+ SG_VA_FLOAT_2 = 0x00000400,
+ SG_VA_FLOAT_3 = 0x00000800,
+};
+
+enum sgPropertyTypes {
+ SG_MATERIAL = 0,
+ SG_INDEX_TYPES = 1,
+ SG_VERT_ATTRIBS = 2
+};
class sgSimpleBuffer {
char *ptr;
unsigned int size;
-
+ size_t offset;
public:
- inline sgSimpleBuffer( unsigned int s )
+ sgSimpleBuffer( unsigned int s = 0) :
+ ptr(NULL),
+ size(0),
+ offset(0)
{
- size = 1;
- while ( size < s ) {
- size *= 2;
- }
- cout << "Creating a new buffer of size = " << size << endl;
- ptr = new char[size];
- }
-
- inline ~sgSimpleBuffer() {
- delete [] ptr;
- }
-
- inline unsigned int get_size() const { return size; }
- inline char *get_ptr() const { return ptr; }
- inline void resize( unsigned int s ) {
- if ( s > size ) {
- if ( ptr != NULL ) {
- delete [] ptr;
- }
- while ( size < s ) {
- size *= 2;
- }
- cout << "resizing buffer to size = " << size << endl;
- ptr = new char[size];
- }
+ resize(s);
}
-};
+ ~sgSimpleBuffer()
+ {
+ delete [] ptr;
+ }
-// calculate the center of a list of points, by taking the halfway
-// point between the min and max points.
-static Point3D calc_center( point_list& wgs84_nodes ) {
- Point3D p, min, max;
+ unsigned int get_size() const { return size; }
+ char *get_ptr() const { return ptr; }
+
+ void reset()
+ {
+ offset = 0;
+ }
+
+ void resize( unsigned int s )
+ {
+ if ( s > size ) {
+ if ( ptr != NULL ) {
+ delete [] ptr;
+ }
+
+ if ( size == 0) {
+ size = 16;
+ }
+
+ while ( size < s ) {
+ size = size << 1;
+ }
+ ptr = new char[size];
+ }
+ }
+
+ float readInt()
+ {
+ unsigned int* p = reinterpret_cast<unsigned int*>(ptr + offset);
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint32_t *) p);
+ }
+
+ offset += sizeof(unsigned int);
+ return *p;
+ }
+
+ SGVec3d readVec3d()
+ {
+ double* p = reinterpret_cast<double*>(ptr + offset);
+
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint64_t *) p + 0);
+ sgEndianSwap((uint64_t *) p + 1);
+ sgEndianSwap((uint64_t *) p + 2);
+ }
+
+ offset += 3 * sizeof(double);
+ return SGVec3d(p);
+ }
+
+ float readFloat()
+ {
+ float* p = reinterpret_cast<float*>(ptr + offset);
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint32_t *) p);
+ }
+
+ offset += sizeof(float);
+ return *p;
+ }
+
+ SGVec2f readVec2f()
+ {
+ float* p = reinterpret_cast<float*>(ptr + offset);
+
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint32_t *) p + 0);
+ sgEndianSwap((uint32_t *) p + 1);
+ }
+
+ offset += 2 * sizeof(float);
+ return SGVec2f(p);
+ }
+
+ SGVec3f readVec3f()
+ {
+ float* p = reinterpret_cast<float*>(ptr + offset);
+
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint32_t *) p + 0);
+ sgEndianSwap((uint32_t *) p + 1);
+ sgEndianSwap((uint32_t *) p + 2);
+ }
+
+ offset += 3 * sizeof(float);
+ return SGVec3f(p);
+ }
+
+ SGVec4f readVec4f()
+ {
+ float* p = reinterpret_cast<float*>(ptr + offset);
+
+ if ( sgIsBigEndian() ) {
+ sgEndianSwap((uint32_t *) p + 0);
+ sgEndianSwap((uint32_t *) p + 1);
+ sgEndianSwap((uint32_t *) p + 2);
+ sgEndianSwap((uint32_t *) p + 3);
+ }
+
+ offset += 4 * sizeof(float);
+ return SGVec4f(p);
+ }
+};
- if ( wgs84_nodes.size() ) {
- min = max = wgs84_nodes[0];
- } else {
- min = max = Point3D( 0 );
+template <class T>
+static void read_indices(char* buffer,
+ size_t bytes,
+ int indexMask,
+ int vaMask,
+ int_list& vertices,
+ int_list& normals,
+ int_list& colors,
+ tci_list& texCoords,
+ vai_list& vas
+ )
+{
+ const int indexSize = sizeof(T) * std::bitset<32>((int)indexMask).count();
+ const int vaSize = sizeof(T) * std::bitset<32>((int)vaMask).count();
+ const int count = bytes / (indexSize + vaSize);
+
+ // fix endian-ness of the whole lot, if required
+ if (sgIsBigEndian()) {
+ int indices = bytes / sizeof(T);
+ T* src = reinterpret_cast<T*>(buffer);
+ for (int i=0; i<indices; ++i) {
+ sgEndianSwap(src++);
+ }
+ }
+
+ T* src = reinterpret_cast<T*>(buffer);
+ for (int i=0; i<count; ++i) {
+ if (indexMask & SG_IDX_VERTICES) vertices.push_back(*src++);
+ if (indexMask & SG_IDX_NORMALS) normals.push_back(*src++);
+ if (indexMask & SG_IDX_COLORS) colors.push_back(*src++);
+ if (indexMask & SG_IDX_TEXCOORDS_0) texCoords[0].push_back(*src++);
+ if (indexMask & SG_IDX_TEXCOORDS_1) texCoords[1].push_back(*src++);
+ if (indexMask & SG_IDX_TEXCOORDS_2) texCoords[2].push_back(*src++);
+ if (indexMask & SG_IDX_TEXCOORDS_3) texCoords[3].push_back(*src++);
+
+ if ( vaMask ) {
+ if (vaMask & SG_VA_INTEGER_0) vas[0].push_back(*src++);
+ if (vaMask & SG_VA_INTEGER_1) vas[1].push_back(*src++);
+ if (vaMask & SG_VA_INTEGER_2) vas[2].push_back(*src++);
+ if (vaMask & SG_VA_INTEGER_3) vas[3].push_back(*src++);
+ if (vaMask & SG_VA_FLOAT_0) vas[4].push_back(*src++);
+ if (vaMask & SG_VA_FLOAT_1) vas[5].push_back(*src++);
+ if (vaMask & SG_VA_FLOAT_2) vas[6].push_back(*src++);
+ if (vaMask & SG_VA_FLOAT_3) vas[7].push_back(*src++);
+ }
+ } // of elements in the index
+
+ // WS2.0 fix : toss zero area triangles
+ if ( ( count == 3 ) && (indexMask & SG_IDX_VERTICES) ) {
+ if ( (vertices[0] == vertices[1]) ||
+ (vertices[1] == vertices[2]) ||
+ (vertices[2] == vertices[0]) ) {
+ vertices.clear();
+ }
}
+}
+
+template <class T>
+void write_indice(gzFile fp, T value)
+{
+ sgWriteBytes(fp, sizeof(T), &value);
+}
- for ( int i = 0; i < (int)wgs84_nodes.size(); ++i ) {
- p = wgs84_nodes[i];
+// specialize template to call endian-aware conversion methods
+template <>
+void write_indice(gzFile fp, uint16_t value)
+{
+ sgWriteUShort(fp, value);
+}
- if ( p.x() < min.x() ) { min.setx( p.x() ); }
- if ( p.y() < min.y() ) { min.sety( p.y() ); }
- if ( p.z() < min.z() ) { min.setz( p.z() ); }
+template <>
+void write_indice(gzFile fp, uint32_t value)
+{
+ sgWriteUInt(fp, value);
+}
- if ( p.x() > max.x() ) { max.setx( p.x() ); }
- if ( p.y() > max.y() ) { max.sety( p.y() ); }
- if ( p.z() > max.z() ) { max.setz( p.z() ); }
- }
- return ( min + max ) / 2.0;
+template <class T>
+void write_indices(gzFile fp,
+ unsigned char indexMask,
+ unsigned int vaMask,
+ const int_list& vertices,
+ const int_list& normals,
+ const int_list& colors,
+ const tci_list& texCoords,
+ const vai_list& vas )
+{
+ unsigned int count = vertices.size();
+ const int indexSize = sizeof(T) * std::bitset<32>((int)indexMask).count();
+ const int vaSize = sizeof(T) * std::bitset<32>((int)vaMask).count();
+ sgWriteUInt(fp, (indexSize + vaSize) * count);
+
+ for (unsigned int i=0; i < count; ++i) {
+ write_indice(fp, static_cast<T>(vertices[i]));
+
+ if (indexMask & SG_IDX_NORMALS) {
+ write_indice(fp, static_cast<T>(normals[i]));
+ }
+ if (indexMask & SG_IDX_COLORS) {
+ write_indice(fp, static_cast<T>(colors[i]));
+ }
+ if (indexMask & SG_IDX_TEXCOORDS_0) {
+ write_indice(fp, static_cast<T>(texCoords[0][i]));
+ }
+ if (indexMask & SG_IDX_TEXCOORDS_1) {
+ write_indice(fp, static_cast<T>(texCoords[1][i]));
+ }
+ if (indexMask & SG_IDX_TEXCOORDS_2) {
+ write_indice(fp, static_cast<T>(texCoords[2][i]));
+ }
+ if (indexMask & SG_IDX_TEXCOORDS_3) {
+ write_indice(fp, static_cast<T>(texCoords[3][i]));
+ }
+
+ if (vaMask) {
+ if (vaMask & SG_VA_INTEGER_0) {
+ write_indice(fp, static_cast<T>(vas[0][i]));
+ }
+ if (vaMask & SG_VA_INTEGER_1) {
+ write_indice(fp, static_cast<T>(vas[1][i]));
+ }
+ if (vaMask & SG_VA_INTEGER_2) {
+ write_indice(fp, static_cast<T>(vas[2][i]));
+ }
+ if (vaMask & SG_VA_INTEGER_3) {
+ write_indice(fp, static_cast<T>(vas[3][i]));
+ }
+
+ if (vaMask & SG_VA_FLOAT_0) {
+ write_indice(fp, static_cast<T>(vas[4][i]));
+ }
+ if (vaMask & SG_VA_FLOAT_1) {
+ write_indice(fp, static_cast<T>(vas[5][i]));
+ }
+ if (vaMask & SG_VA_FLOAT_2) {
+ write_indice(fp, static_cast<T>(vas[6][i]));
+ }
+ if (vaMask & SG_VA_FLOAT_3) {
+ write_indice(fp, static_cast<T>(vas[7][i]));
+ }
+ }
+ }
}
-// calculate the bounding sphere. Center is the center of the
-// tile and zero elevation
-double sgCalcBoundingRadius( Point3D center, point_list& wgs84_nodes ) {
- double dist_squared;
- double radius_squared = 0;
+
+// read object properties
+void SGBinObject::read_object( gzFile fp,
+ int obj_type,
+ int nproperties,
+ int nelements,
+ group_list& vertices,
+ group_list& normals,
+ group_list& colors,
+ group_tci_list& texCoords,
+ group_vai_list& vertexAttribs,
+ string_list& materials)
+{
+ unsigned int nbytes;
+ unsigned char idx_mask;
+ unsigned int vertex_attrib_mask;
+ int j;
+ sgSimpleBuffer buf( 32768 ); // 32 Kb
+ char material[256];
+
+ // default values
+ if ( obj_type == SG_POINTS ) {
+ idx_mask = SG_IDX_VERTICES;
+ } else {
+ idx_mask = (char)(SG_IDX_VERTICES | SG_IDX_TEXCOORDS_0);
+ }
+ vertex_attrib_mask = 0;
- for ( int i = 0; i < (int)wgs84_nodes.size(); ++i ) {
- dist_squared = center.distance3Dsquared( wgs84_nodes[i] );
- if ( dist_squared > radius_squared ) {
- radius_squared = dist_squared;
+ for ( j = 0; j < nproperties; ++j ) {
+ char prop_type;
+ sgReadChar( fp, &prop_type );
+ sgReadUInt( fp, &nbytes );
+
+ buf.resize(nbytes);
+ char *ptr = buf.get_ptr();
+
+ switch( prop_type )
+ {
+ case SG_MATERIAL:
+ sgReadBytes( fp, nbytes, ptr );
+ if (nbytes > 255) {
+ nbytes = 255;
+ }
+ strncpy( material, ptr, nbytes );
+ material[nbytes] = '\0';
+ break;
+
+ case SG_INDEX_TYPES:
+ if (nbytes == 1) {
+ sgReadChar( fp, (char *)&idx_mask );
+ } else {
+ sgReadBytes( fp, nbytes, ptr );
+ }
+ break;
+
+ case SG_VERT_ATTRIBS:
+ if (nbytes == 4) {
+ sgReadUInt( fp, &vertex_attrib_mask );
+ } else {
+ sgReadBytes( fp, nbytes, ptr );
+ }
+ break;
+
+ default:
+ sgReadBytes( fp, nbytes, ptr );
+ SG_LOG(SG_IO, SG_ALERT, "Found UNKNOWN property type with nbytes == " << nbytes << " mask is " << (int)idx_mask );
+ break;
}
}
- return sqrt(radius_squared);
+ if ( sgReadError() ) {
+ throw sg_exception("Error reading object properties");
+ }
+
+ size_t indexCount = std::bitset<32>((int)idx_mask).count();
+ if (indexCount == 0) {
+ throw sg_exception("object index mask has no bits set");
+ }
+
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ if ( sgReadError() ) {
+ throw sg_exception("Error reading element size");
+ }
+
+ buf.resize( nbytes );
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+
+ if ( sgReadError() ) {
+ throw sg_exception("Error reading element bytes");
+ }
+
+ int_list vs;
+ int_list ns;
+ int_list cs;
+ tci_list tcs;
+ vai_list vas;
+
+ if (version >= 10) {
+ read_indices<uint32_t>(ptr, nbytes, idx_mask, vertex_attrib_mask, vs, ns, cs, tcs, vas );
+ } else {
+ read_indices<uint16_t>(ptr, nbytes, idx_mask, vertex_attrib_mask, vs, ns, cs, tcs, vas );
+ }
+
+ // Fix for WS2.0 - ignore zero area triangles
+ if ( !vs.empty() ) {
+ vertices.push_back( vs );
+ normals.push_back( ns );
+ colors.push_back( cs );
+ texCoords.push_back( tcs );
+ vertexAttribs.push_back( vas );
+ materials.push_back( material );
+ }
+ } // of element iteration
}
// read a binary file and populate the provided structures.
bool SGBinObject::read_bin( const string& file ) {
- Point3D p;
- int i, j, k;
- char material[256];
+ SGVec3d p;
+ int i, k;
+ size_t j;
unsigned int nbytes;
- static sgSimpleBuffer buf( 32768 ); // 32 Kb
+ sgSimpleBuffer buf( 32768 ); // 32 Kb
// zero out structures
- gbs_center = Point3D( 0 );
+ gbs_center = SGVec3d(0, 0, 0);
gbs_radius = 0.0;
wgs84_nodes.clear();
normals.clear();
texcoords.clear();
+ pts_v.clear();
+ pts_n.clear();
+ pts_c.clear();
+ pts_tcs.clear();
+ pts_vas.clear();
+ pt_materials.clear();
+
tris_v.clear();
- tris_tc.clear();
+ tris_n.clear();
+ tris_c.clear();
+ tris_tcs.clear();
+ tris_vas.clear();
tri_materials.clear();
strips_v.clear();
- strips_tc.clear();
+ strips_n.clear();
+ strips_c.clear();
+ strips_tcs.clear();
+ strips_vas.clear();
strip_materials.clear();
fans_v.clear();
- fans_tc.clear();
+ fans_n.clear();
+ fans_c.clear();
+ fans_tcs.clear();
+ fans_vas.clear();
fan_materials.clear();
-
+
gzFile fp;
if ( (fp = gzopen( file.c_str(), "rb" )) == NULL ) {
- string filegz = file + ".gz";
- if ( (fp = gzopen( filegz.c_str(), "rb" )) == NULL ) {
- // cout << "ERROR: opening " << file << " or " << filegz
- // << "for reading!" << endl;
+ string filegz = file + ".gz";
+ if ( (fp = gzopen( filegz.c_str(), "rb" )) == NULL ) {
+ SG_LOG( SG_EVENT, SG_ALERT,
+ "ERROR: opening " << file << " or " << filegz << " for reading!");
- return false;
- }
+ throw sg_io_exception("Error opening for reading (and .gz)", sg_location(file));
+ }
}
sgClearReadError();
unsigned int header;
sgReadUInt( fp, &header );
if ( ((header & 0xFF000000) >> 24) == 'S' &&
- ((header & 0x00FF0000) >> 16) == 'G' ) {
- // cout << "Good header" << endl;
- // read file version
- version = (header & 0x0000FFFF);
- // cout << "File version = " << version << endl;
+ ((header & 0x00FF0000) >> 16) == 'G' ) {
+
+ // read file version
+ version = (header & 0x0000FFFF);
} else {
- // close the file before we return
- gzclose(fp);
-
- return false;
+ // close the file before we return
+ gzclose(fp);
+ throw sg_io_exception("Bad BTG magic/version", sg_location(file));
}
-
+
// read creation time
- time_t calendar_time;
- sgReadLong( fp, &calendar_time );
+ unsigned int foo_calendar_time;
+ sgReadUInt( fp, &foo_calendar_time );
#if 0
+ time_t calendar_time = foo_calendar_time;
// The following code has a global effect on the host application
// and can screws up the time elsewhere. It should be avoided
// unless you need this for debugging in which case you should
local_tm = localtime( &calendar_time );
char time_str[256];
strftime( time_str, 256, "%a %b %d %H:%M:%S %Z %Y", local_tm);
- cout << "File created on " << time_str << endl;
+ SG_LOG( SG_EVENT, SG_DEBUG, "File created on " << time_str);
#endif
// read number of top level objects
- short nobjects;
- sgReadShort( fp, &nobjects );
- // cout << "Total objects to read = " << nobjects << endl;
+ int nobjects;
+ if ( version >= 10) { // version 10 extends everything to be 32-bit
+ sgReadInt( fp, &nobjects );
+ } else if ( version >= 7 ) {
+ uint16_t v;
+ sgReadUShort( fp, &v );
+ nobjects = v;
+ } else {
+ int16_t v;
+ sgReadShort( fp, &v );
+ nobjects = v;
+ }
+
+ SG_LOG(SG_IO, SG_DEBUG, "SGBinObject::read_bin Total objects to read = " << nobjects);
+ if ( sgReadError() ) {
+ throw sg_io_exception("Error reading BTG file header", sg_location(file));
+ }
+
// read in objects
for ( i = 0; i < nobjects; ++i ) {
- // read object header
- char obj_type;
- short nproperties, nelements;
- sgReadChar( fp, &obj_type );
- sgReadShort( fp, &nproperties );
- sgReadShort( fp, &nelements );
-
- // cout << "object " << i << " = " << (int)obj_type << " props = "
- // << nproperties << " elements = " << nelements << endl;
-
- if ( obj_type == SG_BOUNDING_SPHERE ) {
- // read bounding sphere properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
-
- // read bounding sphere elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
-
- double *dptr = (double *)ptr;
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (uint64 *)&(dptr[0]) );
- sgEndianSwap( (uint64 *)&(dptr[1]) );
- sgEndianSwap( (uint64 *)&(dptr[2]) );
- }
- gbs_center = Point3D( dptr[0], dptr[1], dptr[2] );
- // cout << "Center = " << gbs_center << endl;
- ptr += sizeof(double) * 3;
-
- float *fptr = (float *)ptr;
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned int *)fptr );
- }
- gbs_radius = fptr[0];
- // cout << "Bounding radius = " << gbs_radius << endl;
- }
- } else if ( obj_type == SG_VERTEX_LIST ) {
- // read vertex list properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
-
- // read vertex list elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / (sizeof(float) * 3);
- float *fptr = (float *)ptr;
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned int *)&(fptr[0]) );
- sgEndianSwap( (unsigned int *)&(fptr[1]) );
- sgEndianSwap( (unsigned int *)&(fptr[2]) );
- }
- p = Point3D( fptr[0], fptr[1], fptr[2] );
- // cout << "node = " << p << endl;
- wgs84_nodes.push_back( p );
- fptr += 3;
- }
- }
- } else if ( obj_type == SG_NORMAL_LIST ) {
- // read normal list properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
-
- // read normal list elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- unsigned char *ptr = (unsigned char *)(buf.get_ptr());
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / 3;
- for ( k = 0; k < count; ++k ) {
- sgdVec3 normal;
- sgdSetVec3( normal,
- (ptr[0]) / 127.5 - 1.0,
- (ptr[1]) / 127.5 - 1.0,
- (ptr[2]) / 127.5 - 1.0 );
- sgdNormalizeVec3( normal );
-
- p = Point3D( normal[0], normal[1], normal[2] );
- // cout << "normal = " << p << endl;
- normals.push_back( p );
- ptr += 3;
- }
- }
- } else if ( obj_type == SG_TEXCOORD_LIST ) {
- // read texcoord list properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
-
- // read texcoord list elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / (sizeof(float) * 2);
- float *fptr = (float *)ptr;
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned int *)&(fptr[0]) );
- sgEndianSwap( (unsigned int *)&(fptr[1]) );
- }
- p = Point3D( fptr[0], fptr[1], 0 );
- // cout << "texcoord = " << p << endl;
- texcoords.push_back( p );
- fptr += 2;
- }
- }
- } else if ( obj_type == SG_TRIANGLE_FACES ) {
- // read triangle face properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- if ( prop_type == SG_MATERIAL ) {
- strncpy( material, ptr, nbytes );
- material[nbytes] = '\0';
- // cout << "material type = " << material << endl;
- }
- }
-
- // read triangle face elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / (sizeof(short) * 2);
- short *sptr = (short *)ptr;
- int_list vs, tcs;
- vs.clear(); tcs.clear();
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned short *)&(sptr[0]) );
- sgEndianSwap( (unsigned short *)&(sptr[1]) );
- }
- vs.push_back( sptr[0] );
- tcs.push_back( sptr[1] );
- // cout << sptr[0] << "/" << sptr[1] << " ";
- sptr += 2;
- }
- // cout << endl;
- tris_v.push_back( vs );
- tris_tc.push_back( tcs );
- tri_materials.push_back( material );
- }
- } else if ( obj_type == SG_TRIANGLE_STRIPS ) {
- // read triangle strip properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- if ( prop_type == SG_MATERIAL ) {
- strncpy( material, ptr, nbytes );
- material[nbytes] = '\0';
- // cout << "material type = " << material << endl;
- }
- }
-
- // read triangle strip elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / (sizeof(short) * 2);
- short *sptr = (short *)ptr;
- int_list vs, tcs;
- vs.clear(); tcs.clear();
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned short *)&(sptr[0]) );
- sgEndianSwap( (unsigned short *)&(sptr[1]) );
- }
- vs.push_back( sptr[0] );
- tcs.push_back( sptr[1] );
- // cout << sptr[0] << "/" << sptr[1] << " ";
- sptr += 2;
- }
- // cout << endl;
- strips_v.push_back( vs );
- strips_tc.push_back( tcs );
- strip_materials.push_back( material );
- }
- } else if ( obj_type == SG_TRIANGLE_FANS ) {
- // read triangle fan properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- if ( prop_type == SG_MATERIAL ) {
- strncpy( material, ptr, nbytes );
- material[nbytes] = '\0';
- // cout << "material type = " << material << endl;
- }
- }
-
- // read triangle fan elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- int count = nbytes / (sizeof(short) * 2);
- short *sptr = (short *)ptr;
- int_list vs, tcs;
- vs.clear(); tcs.clear();
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (unsigned short *)&(sptr[0]) );
- sgEndianSwap( (unsigned short *)&(sptr[1]) );
- }
- vs.push_back( sptr[0] );
- tcs.push_back( sptr[1] );
- // cout << sptr[0] << "/" << sptr[1] << " ";
- sptr += 2;
- }
- // cout << endl;
- fans_v.push_back( vs );
- fans_tc.push_back( tcs );
- fan_materials.push_back( material );
- }
- } else {
- // unknown object type, just skip
-
- // read properties
- for ( j = 0; j < nproperties; ++j ) {
- char prop_type;
- sgReadChar( fp, &prop_type );
-
- sgReadUInt( fp, &nbytes );
- // cout << "property size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
-
- // read elements
- for ( j = 0; j < nelements; ++j ) {
- sgReadUInt( fp, &nbytes );
- // cout << "element size = " << nbytes << endl;
- if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
- char *ptr = buf.get_ptr();
- sgReadBytes( fp, nbytes, ptr );
- }
- }
+ // read object header
+ char obj_type;
+ uint32_t nproperties, nelements;
+ sgReadChar( fp, &obj_type );
+ if ( version >= 10 ) {
+ sgReadUInt( fp, &nproperties );
+ sgReadUInt( fp, &nelements );
+ } else if ( version >= 7 ) {
+ uint16_t v;
+ sgReadUShort( fp, &v );
+ nproperties = v;
+ sgReadUShort( fp, &v );
+ nelements = v;
+ } else {
+ int16_t v;
+ sgReadShort( fp, &v );
+ nproperties = v;
+ sgReadShort( fp, &v );
+ nelements = v;
+ }
+
+ SG_LOG(SG_IO, SG_DEBUG, "SGBinObject::read_bin object " << i <<
+ " = " << (int)obj_type << " props = " << nproperties <<
+ " elements = " << nelements);
+
+ if ( obj_type == SG_BOUNDING_SPHERE ) {
+ // read bounding sphere properties
+ read_properties( fp, nproperties );
+
+ // read bounding sphere elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ gbs_center = buf.readVec3d();
+ gbs_radius = buf.readFloat();
+ }
+ } else if ( obj_type == SG_VERTEX_LIST ) {
+ // read vertex list properties
+ read_properties( fp, nproperties );
+
+ // read vertex list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / (sizeof(float) * 3);
+ wgs84_nodes.reserve( count );
+ for ( k = 0; k < count; ++k ) {
+ SGVec3f v = buf.readVec3f();
+ // extend from float to double, hmmm
+ wgs84_nodes.push_back( SGVec3d(v[0], v[1], v[2]) );
+ }
+ }
+ } else if ( obj_type == SG_COLOR_LIST ) {
+ // read color list properties
+ read_properties( fp, nproperties );
+
+ // read color list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / (sizeof(float) * 4);
+ colors.reserve(count);
+ for ( k = 0; k < count; ++k ) {
+ colors.push_back( buf.readVec4f() );
+ }
+ }
+ } else if ( obj_type == SG_NORMAL_LIST ) {
+ // read normal list properties
+ read_properties( fp, nproperties );
+
+ // read normal list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ unsigned char *ptr = (unsigned char *)(buf.get_ptr());
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / 3;
+ normals.reserve( count );
+
+ for ( k = 0; k < count; ++k ) {
+ SGVec3f normal( (ptr[0]) / 127.5 - 1.0,
+ (ptr[1]) / 127.5 - 1.0,
+ (ptr[2]) / 127.5 - 1.0);
+ normals.push_back(normalize(normal));
+ ptr += 3;
+ }
+ }
+ } else if ( obj_type == SG_TEXCOORD_LIST ) {
+ // read texcoord list properties
+ read_properties( fp, nproperties );
+
+ // read texcoord list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / (sizeof(float) * 2);
+ texcoords.reserve(count);
+ for ( k = 0; k < count; ++k ) {
+ texcoords.push_back( buf.readVec2f() );
+ }
+ }
+ } else if ( obj_type == SG_VA_FLOAT_LIST ) {
+ // read vertex attribute (float) properties
+ read_properties( fp, nproperties );
+
+ // read vertex attribute list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / (sizeof(float));
+ va_flt.reserve(count);
+ for ( k = 0; k < count; ++k ) {
+ va_flt.push_back( buf.readFloat() );
+ }
+ }
+ } else if ( obj_type == SG_VA_INTEGER_LIST ) {
+ // read vertex attribute (integer) properties
+ read_properties( fp, nproperties );
+
+ // read vertex attribute list elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ buf.resize( nbytes );
+ buf.reset();
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ int count = nbytes / (sizeof(unsigned int));
+ va_int.reserve(count);
+ for ( k = 0; k < count; ++k ) {
+ va_int.push_back( buf.readInt() );
+ }
+ }
+ } else if ( obj_type == SG_POINTS ) {
+ // read point elements
+ read_object( fp, SG_POINTS, nproperties, nelements,
+ pts_v, pts_n, pts_c, pts_tcs,
+ pts_vas, pt_materials );
+ } else if ( obj_type == SG_TRIANGLE_FACES ) {
+ // read triangle face properties
+ read_object( fp, SG_TRIANGLE_FACES, nproperties, nelements,
+ tris_v, tris_n, tris_c, tris_tcs,
+ tris_vas, tri_materials );
+ } else if ( obj_type == SG_TRIANGLE_STRIPS ) {
+ // read triangle strip properties
+ read_object( fp, SG_TRIANGLE_STRIPS, nproperties, nelements,
+ strips_v, strips_n, strips_c, strips_tcs,
+ strips_vas, strip_materials );
+ } else if ( obj_type == SG_TRIANGLE_FANS ) {
+ // read triangle fan properties
+ read_object( fp, SG_TRIANGLE_FANS, nproperties, nelements,
+ fans_v, fans_n, fans_c, fans_tcs,
+ fans_vas, fan_materials );
+ } else {
+ // unknown object type, just skip
+ read_properties( fp, nproperties );
+
+ // read elements
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ // cout << "element size = " << nbytes << endl;
+ if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ }
+ }
+
+ if ( sgReadError() ) {
+ throw sg_io_exception("Error while reading object", sg_location(file, i));
+ }
}
// close the file
gzclose(fp);
- if ( sgReadError() ) {
- cout << "We detected an error while reading the file." << endl;
- return false;
+ return true;
+}
+
+void SGBinObject::write_header(gzFile fp, int type, int nProps, int nElements)
+{
+ sgWriteChar(fp, (unsigned char) type);
+ if (version == 7) {
+ sgWriteUShort(fp, nProps);
+ sgWriteUShort(fp, nElements);
+ } else {
+ sgWriteUInt(fp, nProps);
+ sgWriteUInt(fp, nElements);
}
+}
- return true;
+unsigned int SGBinObject::count_objects(const string_list& materials)
+{
+ unsigned int result = 0;
+ unsigned int start = 0, end = 1;
+ unsigned int count = materials.size();
+ string m;
+
+ while ( start < count ) {
+ m = materials[start];
+ for (end = start+1; (end < count) && (m == materials[end]); ++end) { }
+ ++result;
+ start = end;
+ }
+
+ return result;
}
+void SGBinObject::write_objects(gzFile fp, int type,
+ const group_list& verts,
+ const group_list& normals,
+ const group_list& colors,
+ const group_tci_list& texCoords,
+ const group_vai_list& vertexAttribs,
+ const string_list& materials)
+{
+ if (verts.empty()) {
+ return;
+ }
+
+ unsigned int start = 0, end = 1;
+ string m;
+ int_list emptyList;
+
+ while (start < materials.size()) {
+ m = materials[start];
+ // find range of objects with identical material, write out as a single object
+ for (end = start+1; (end < materials.size()) && (m == materials[end]); ++end) {}
+
+ // calc the number of elements
+ const int count = end - start;
+
+ // calc the number of properties
+ unsigned int va_mask = 0;
+ unsigned int va_count = vertexAttribs.size();
+ for ( unsigned int va=0; va<va_count; va++ ) {
+ if ( !vertexAttribs[va].empty() && !vertexAttribs[va].front().empty() ) {
+ va_mask |= ( 1 << va );
+ }
+ }
+
+ if ( va_mask ) {
+ write_header(fp, type, 3, count);
+ } else {
+ write_header(fp, type, 2, count);
+ }
+
+ // properties
+ // material property
+ sgWriteChar( fp, (char)SG_MATERIAL ); // property
+ sgWriteUInt( fp, m.length() ); // nbytes
+ sgWriteBytes( fp, m.length(), m.c_str() );
+
+ // index mask property
+ unsigned char idx_mask = 0;
+ if ( !verts.empty() && !verts[start].empty()) idx_mask |= SG_IDX_VERTICES;
+ if ( !normals.empty() && !normals[start].empty()) idx_mask |= SG_IDX_NORMALS;
+ if ( !colors.empty() && !colors[start].empty()) idx_mask |= SG_IDX_COLORS;
+ if ( !texCoords.empty() && !texCoords[start][0].empty()) idx_mask |= SG_IDX_TEXCOORDS_0;
+ if ( !texCoords.empty() && !texCoords[start][1].empty()) idx_mask |= SG_IDX_TEXCOORDS_1;
+ if ( !texCoords.empty() && !texCoords[start][2].empty()) idx_mask |= SG_IDX_TEXCOORDS_2;
+ if ( !texCoords.empty() && !texCoords[start][3].empty()) idx_mask |= SG_IDX_TEXCOORDS_3;
+
+ if (idx_mask == 0) {
+ SG_LOG(SG_IO, SG_ALERT, "SGBinObject::write_objects: object with material:"
+ << m << "has no indices set");
+ }
+
+ sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
+ sgWriteUInt( fp, 1 ); // nbytes
+ sgWriteChar( fp, idx_mask );
+
+ // vertex attribute property
+ if (va_mask != 0) {
+ sgWriteChar( fp, (char)SG_VERT_ATTRIBS ); // property
+ sgWriteUInt( fp, 4 ); // nbytes
+ sgWriteChar( fp, va_mask );
+ }
+
+ // elements
+ for (unsigned int i=start; i < end; ++i) {
+ const int_list& va(verts[i]);
+ const int_list& na((idx_mask & SG_IDX_NORMALS) ? normals[i] : emptyList);
+ const int_list& ca((idx_mask & SG_IDX_COLORS) ? colors[i] : emptyList);
+
+ // pass the whole texcoord array - we'll figure out which indicies to write
+ // in write_indices
+ const tci_list& tca( texCoords[i] );
+
+ // pass the whole vertex array - we'll figure out which indicies to write
+ // in write_indices
+ const vai_list& vaa( vertexAttribs[i] );
+
+ if (version == 7) {
+ write_indices<uint16_t>(fp, idx_mask, va_mask, va, na, ca, tca, vaa);
+ } else {
+ write_indices<uint32_t>(fp, idx_mask, va_mask, va, na, ca, tca, vaa);
+ }
+ }
+
+ start = end;
+ } // of materials iteration
+}
// write out the structures to a binary file. We assume that the
// groups come to us sorted by material property. If not, things
// don't break, but the result won't be as optimal.
bool SGBinObject::write_bin( const string& base, const string& name,
- const SGBucket& b )
+ const SGBucket& b )
{
- Point3D p;
- sgVec2 t;
- sgVec3 pt;
- int i, j;
- string dir = base + "/" + b.gen_base_path();
- string command = "mkdir -p " + dir;
-#if defined(_MSC_VER) || defined(__MINGW32__)
- system( (string("mkdir ") + dir).c_str() );
-#else
- system(command.c_str());
-#endif
+ SGPath file = base + "/" + b.gen_base_path() + "/" + name + ".gz";
+ return write_bin_file(file);
+}
+
+static unsigned int max_object_size( const string_list& materials )
+{
+ unsigned int max_size = 0;
+
+ for (unsigned int start=0; start < materials.size();) {
+ string m = materials[start];
+ unsigned int end = start + 1;
+ // find range of objects with identical material, calc its size
+ for (; (end < materials.size()) && (m == materials[end]); ++end) {}
+
+ unsigned int cur_size = end - start;
+ max_size = std::max(max_size, cur_size);
+ start = end;
+ }
+
+ return max_size;
+}
- string file = dir + "/" + name + ".gz";
- cout << "Output file = " << file << endl;
+const unsigned int VERSION_7_MATERIAL_LIMIT = 0x7fff;
+
+bool SGBinObject::write_bin_file(const SGPath& file)
+{
+ int i;
+
+ SGPath file2(file);
+ file2.create_dir( 0755 );
gzFile fp;
if ( (fp = gzopen( file.c_str(), "wb9" )) == NULL ) {
- cout << "ERROR: opening " << file << " for writing!" << endl;
- return false;
+ cout << "ERROR: opening " << file.str() << " for writing!" << endl;
+ return false;
}
sgClearWriteError();
- cout << "triangles size = " << tris_v.size() << " tri_materials = "
- << tri_materials.size() << endl;
- cout << "strips size = " << strips_v.size() << " strip_materials = "
- << strip_materials.size() << endl;
- cout << "fans size = " << fans_v.size() << " fan_materials = "
- << fan_materials.size() << endl;
-
- cout << "points = " << wgs84_nodes.size() << endl;
- cout << "tex coords = " << texcoords.size() << endl;
+ SG_LOG(SG_IO, SG_DEBUG, "points size = " << pts_v.size()
+ << " pt_materials = " << pt_materials.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "triangles size = " << tris_v.size()
+ << " tri_materials = " << tri_materials.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "strips size = " << strips_v.size()
+ << " strip_materials = " << strip_materials.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "fans size = " << fans_v.size()
+ << " fan_materials = " << fan_materials.size() );
+
+ SG_LOG(SG_IO, SG_DEBUG, "nodes = " << wgs84_nodes.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "colors = " << colors.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "normals = " << normals.size() );
+ SG_LOG(SG_IO, SG_DEBUG, "tex coords = " << texcoords.size() );
+
+ version = 10;
+ bool shortMaterialsRanges =
+ (max_object_size(pt_materials) < VERSION_7_MATERIAL_LIMIT) &&
+ (max_object_size(fan_materials) < VERSION_7_MATERIAL_LIMIT) &&
+ (max_object_size(strip_materials) < VERSION_7_MATERIAL_LIMIT) &&
+ (max_object_size(tri_materials) < VERSION_7_MATERIAL_LIMIT);
+
+ if ((wgs84_nodes.size() < 0xffff) &&
+ (normals.size() < 0xffff) &&
+ (texcoords.size() < 0xffff) &&
+ shortMaterialsRanges) {
+ version = 7; // use smaller indices if possible
+ }
// write header magic
+
+ /** Magic Number for our file format */
+ #define SG_FILE_MAGIC_NUMBER ( ('S'<<24) + ('G'<<16) + version )
+
sgWriteUInt( fp, SG_FILE_MAGIC_NUMBER );
time_t calendar_time = time(NULL);
- sgWriteLong( fp, (long int)calendar_time );
+ sgWriteLong( fp, (int32_t)calendar_time );
// calculate and write number of top level objects
- string material;
- int start;
- int end;
- short nobjects = 0;
- nobjects++; // for gbs
- nobjects++; // for vertices
- nobjects++; // for normals
- nobjects++; // for texcoords
-
- // tris
- short ntris = 0;
- start = 0; end = 1;
- while ( start < (int)tri_materials.size() ) {
- material = tri_materials[start];
- while ( (end < (int)tri_materials.size()) &&
- (material == tri_materials[end]) ) {
- end++;
- }
- ntris++;
- start = end; end = start + 1;
- }
- nobjects += ntris;
-
- // strips
- short nstrips = 0;
- start = 0; end = 1;
- while ( start < (int)strip_materials.size() ) {
- material = strip_materials[start];
- while ( (end < (int)strip_materials.size()) &&
- (material == strip_materials[end]) ) {
- end++;
- }
- nstrips++;
- start = end; end = start + 1;
- }
- nobjects += nstrips;
-
- // fans
- short nfans = 0;
- start = 0; end = 1;
- while ( start < (int)fan_materials.size() ) {
- material = fan_materials[start];
- while ( (end < (int)fan_materials.size()) &&
- (material == fan_materials[end]) ) {
- end++;
- }
- nfans++;
- start = end; end = start + 1;
- }
- nobjects += nfans;
-
- cout << "total top level objects = " << nobjects << endl;
- sgWriteShort( fp, nobjects );
+ int nobjects = 5; // gbs, vertices, colors, normals, texcoords
+ nobjects += count_objects(pt_materials);
+ nobjects += count_objects(tri_materials);
+ nobjects += count_objects(strip_materials);
+ nobjects += count_objects(fan_materials);
- // write bounding sphere
- sgWriteChar( fp, (char)SG_BOUNDING_SPHERE ); // type
- sgWriteShort( fp, 0 ); // nproperties
- sgWriteShort( fp, 1 ); // nelements
+ SG_LOG(SG_IO, SG_DEBUG, "total top level objects = " << nobjects);
+ if (version == 7) {
+ sgWriteUShort( fp, (uint16_t) nobjects );
+ } else {
+ sgWriteInt( fp, nobjects );
+ }
+
+ // write bounding sphere
+ write_header( fp, SG_BOUNDING_SPHERE, 0, 1);
sgWriteUInt( fp, sizeof(double) * 3 + sizeof(float) ); // nbytes
- sgdVec3 center;
- sgdSetVec3( center, gbs_center.x(), gbs_center.y(), gbs_center.z() );
- sgWritedVec3( fp, center );
+ sgWritedVec3( fp, gbs_center );
sgWriteFloat( fp, gbs_radius );
// dump vertex list
- sgWriteChar( fp, (char)SG_VERTEX_LIST ); // type
- sgWriteShort( fp, 0 ); // nproperties
- sgWriteShort( fp, 1 ); // nelements
+ write_header( fp, SG_VERTEX_LIST, 0, 1);
sgWriteUInt( fp, wgs84_nodes.size() * sizeof(float) * 3 ); // nbytes
for ( i = 0; i < (int)wgs84_nodes.size(); ++i ) {
- p = wgs84_nodes[i] - gbs_center;
- sgSetVec3( pt, p.x(), p.y(), p.z() );
- sgWriteVec3( fp, pt );
+ sgWriteVec3( fp, toVec3f(wgs84_nodes[i] - gbs_center));
+ }
+
+ // dump vertex color list
+ write_header( fp, SG_COLOR_LIST, 0, 1);
+ sgWriteUInt( fp, colors.size() * sizeof(float) * 4 ); // nbytes
+ for ( i = 0; i < (int)colors.size(); ++i ) {
+ sgWriteVec4( fp, colors[i]);
}
// dump vertex normal list
- sgWriteChar( fp, (char)SG_NORMAL_LIST ); // type
- sgWriteShort( fp, 0 ); // nproperties
- sgWriteShort( fp, 1 ); // nelements
+ write_header( fp, SG_NORMAL_LIST, 0, 1);
sgWriteUInt( fp, normals.size() * 3 ); // nbytes
char normal[3];
for ( i = 0; i < (int)normals.size(); ++i ) {
- p = normals[i];
- normal[0] = (unsigned char)((p.x() + 1.0) * 127.5);
- normal[1] = (unsigned char)((p.y() + 1.0) * 127.5);
- normal[2] = (unsigned char)((p.z() + 1.0) * 127.5);
- sgWriteBytes( fp, 3, normal );
+ SGVec3f p = normals[i];
+ normal[0] = (unsigned char)((p.x() + 1.0) * 127.5);
+ normal[1] = (unsigned char)((p.y() + 1.0) * 127.5);
+ normal[2] = (unsigned char)((p.z() + 1.0) * 127.5);
+ sgWriteBytes( fp, 3, normal );
}
// dump texture coordinates
- sgWriteChar( fp, (char)SG_TEXCOORD_LIST ); // type
- sgWriteShort( fp, 0 ); // nproperties
- sgWriteShort( fp, 1 ); // nelements
+ write_header( fp, SG_TEXCOORD_LIST, 0, 1);
sgWriteUInt( fp, texcoords.size() * sizeof(float) * 2 ); // nbytes
for ( i = 0; i < (int)texcoords.size(); ++i ) {
- p = texcoords[i];
- sgSetVec2( t, p.x(), p.y() );
- sgWriteVec2( fp, t );
- }
-
- // dump individual triangles if they exist
- if ( tris_v.size() > 0 ) {
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)tri_materials.size() ) {
- // find next group
- material = tri_materials[start];
- while ( (end < (int)tri_materials.size()) &&
- (material == tri_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // write group headers
- sgWriteChar( fp, (char)SG_TRIANGLE_FACES ); // type
- sgWriteShort( fp, 1 ); // nproperties
- sgWriteShort( fp, 1 ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- sgWriteUInt( fp, (end - start) * 3 * 2 * sizeof(short) ); // nbytes
-
- // write group
- for ( i = start; i < end; ++i ) {
- for ( j = 0; j < 3; ++j ) {
- sgWriteShort( fp, (short)tris_v[i][j] );
- sgWriteShort( fp, (short)tris_tc[i][j] );
- }
- }
-
- start = end;
- end = start + 1;
- }
- }
-
- // dump triangle strips
- if ( strips_v.size() > 0 ) {
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)strip_materials.size() ) {
- // find next group
- material = strip_materials[start];
- while ( (end < (int)strip_materials.size()) &&
- (material == strip_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // write group headers
- sgWriteChar( fp, (char)SG_TRIANGLE_STRIPS ); // type
- sgWriteShort( fp, 1 ); // nproperties
- sgWriteShort( fp, end - start ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- // write strips
- for ( i = start; i < end; ++i ) {
- // nbytes
- sgWriteUInt( fp, strips_v[i].size() * 2 * sizeof(short) );
- for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
- sgWriteShort( fp, (short)strips_v[i][j] );
- sgWriteShort( fp, (short)strips_tc[i][j] );
- }
- }
-
- start = end;
- end = start + 1;
- }
- }
-
- // dump triangle fans
- if ( fans_v.size() > 0 ) {
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)fan_materials.size() ) {
- // find next group
- material = fan_materials[start];
- while ( (end < (int)fan_materials.size()) &&
- (material == fan_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // write group headers
- sgWriteChar( fp, (char)SG_TRIANGLE_FANS ); // type
- sgWriteShort( fp, 1 ); // nproperties
- sgWriteShort( fp, end - start ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- // write fans
- for ( i = start; i < end; ++i ) {
- // nbytes
- sgWriteUInt( fp, fans_v[i].size() * 2 * sizeof(short) );
- for ( j = 0; j < (int)fans_v[i].size(); ++j ) {
- sgWriteShort( fp, (short)fans_v[i][j] );
- sgWriteShort( fp, (short)fans_tc[i][j] );
- }
- }
-
- start = end;
- end = start + 1;
- }
+ sgWriteVec2( fp, texcoords[i]);
}
+ write_objects(fp, SG_POINTS, pts_v, pts_n, pts_c, pts_tcs, pts_vas, pt_materials);
+ write_objects(fp, SG_TRIANGLE_FACES, tris_v, tris_n, tris_c, tris_tcs, tris_vas, tri_materials);
+ write_objects(fp, SG_TRIANGLE_STRIPS, strips_v, strips_n, strips_c, strips_tcs, strips_vas, strip_materials);
+ write_objects(fp, SG_TRIANGLE_FANS, fans_v, fans_n, fans_c, fans_tcs, fans_vas, fan_materials);
+
// close the file
gzclose(fp);
if ( sgWriteError() ) {
- cout << "We detected an error while writing the file." << endl;
- return false;
+ cout << "Error while writing file " << file.str() << endl;
+ return false;
}
return true;
// groups come to us sorted by material property. If not, things
// don't break, but the result won't be as optimal.
bool SGBinObject::write_ascii( const string& base, const string& name,
- const SGBucket& b )
+ const SGBucket& b )
{
- Point3D p;
int i, j;
- string dir = base + "/" + b.gen_base_path();
- string command = "mkdir -p " + dir;
-#if defined(_MSC_VER) || defined(__MINGW32__)
- system( (string("mkdir ") + dir).c_str() );
-#else
- system(command.c_str());
-#endif
-
- // string file = dir + "/" + b.gen_index_str();
- string file = dir + "/" + name;
- cout << "Output file = " << file << endl;
+ SGPath file = base + "/" + b.gen_base_path() + "/" + name;
+ file.create_dir( 0755 );
+ cout << "Output file = " << file.str() << endl;
FILE *fp;
if ( (fp = fopen( file.c_str(), "w" )) == NULL ) {
- cout << "ERROR: opening " << file << " for writing!" << endl;
- return false;
+ cout << "ERROR: opening " << file.str() << " for writing!" << endl;
+ return false;
}
cout << "triangles size = " << tris_v.size() << " tri_materials = "
- << tri_materials.size() << endl;
+ << tri_materials.size() << endl;
cout << "strips size = " << strips_v.size() << " strip_materials = "
- << strip_materials.size() << endl;
+ << strip_materials.size() << endl;
cout << "fans size = " << fans_v.size() << " fan_materials = "
- << fan_materials.size() << endl;
+ << fan_materials.size() << endl;
cout << "points = " << wgs84_nodes.size() << endl;
cout << "tex coords = " << texcoords.size() << endl;
// write bounding sphere
fprintf(fp, "# gbs %.5f %.5f %.5f %.2f\n",
- gbs_center.x(), gbs_center.y(), gbs_center.z(), gbs_radius);
+ gbs_center.x(), gbs_center.y(), gbs_center.z(), gbs_radius);
fprintf(fp, "\n");
// dump vertex list
fprintf(fp, "# vertex list\n");
for ( i = 0; i < (int)wgs84_nodes.size(); ++i ) {
- p = wgs84_nodes[i] - gbs_center;
-
- fprintf(fp, "v %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
+ SGVec3d p = wgs84_nodes[i] - gbs_center;
+
+ fprintf(fp, "v %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
}
fprintf(fp, "\n");
fprintf(fp, "# vertex normal list\n");
for ( i = 0; i < (int)normals.size(); ++i ) {
- p = normals[i];
- fprintf(fp, "vn %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
+ SGVec3f p = normals[i];
+ fprintf(fp, "vn %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
}
fprintf(fp, "\n");
// dump texture coordinates
fprintf(fp, "# texture coordinate list\n");
for ( i = 0; i < (int)texcoords.size(); ++i ) {
- p = texcoords[i];
- fprintf(fp, "vt %.5f %.5f\n", p.x(), p.y() );
+ SGVec2f p = texcoords[i];
+ fprintf(fp, "vt %.5f %.5f\n", p.x(), p.y() );
}
fprintf(fp, "\n");
// dump individual triangles if they exist
- if ( tris_v.size() > 0 ) {
- fprintf(fp, "# triangle groups\n");
-
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)tri_materials.size() ) {
- // find next group
- material = tri_materials[start];
- while ( (end < (int)tri_materials.size()) &&
- (material == tri_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // make a list of points for the group
- point_list group_nodes;
- group_nodes.clear();
- Point3D bs_center;
- double bs_radius = 0;
- for ( i = start; i < end; ++i ) {
- for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
- group_nodes.push_back( wgs84_nodes[ tris_v[i][j] ] );
- bs_center = calc_center( group_nodes );
- bs_radius = sgCalcBoundingRadius( bs_center, group_nodes );
- }
- }
-
- // write group headers
- fprintf(fp, "\n");
- fprintf(fp, "# usemtl %s\n", material.c_str());
- fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
- bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
-
- // write groups
- for ( i = start; i < end; ++i ) {
- fprintf(fp, "f");
- for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
- fprintf(fp, " %d/%d", tris_v[i][j], tris_tc[i][j] );
- }
- fprintf(fp, "\n");
- }
-
- start = end;
- end = start + 1;
- }
+ if ( ! tris_v.empty() ) {
+ fprintf(fp, "# triangle groups\n");
+
+ int start = 0;
+ int end = 1;
+ string material;
+ while ( start < (int)tri_materials.size() ) {
+ // find next group
+ material = tri_materials[start];
+ while ( (end < (int)tri_materials.size()) &&
+ (material == tri_materials[end]) )
+ {
+ // cout << "end = " << end << endl;
+ end++;
+ }
+ // cout << "group = " << start << " to " << end - 1 << endl;
+
+ SGSphered d( SGVec3d(0.0, 0.0, 0.0), -1.0 );
+ for ( i = start; i < end; ++i ) {
+ for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
+ d.expandBy(wgs84_nodes[ tris_v[i][j] ]);
+ }
+ }
+
+ SGVec3d bs_center = d.getCenter();
+ double bs_radius = d.getRadius();
+
+ // write group headers
+ fprintf(fp, "\n");
+ fprintf(fp, "# usemtl %s\n", material.c_str());
+ fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
+ bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
+
+ // write groups
+ for ( i = start; i < end; ++i ) {
+ fprintf(fp, "f");
+ for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
+ fprintf(fp, " %d/%d", tris_v[i][j], tris_tcs[i][0][j] );
+ }
+ fprintf(fp, "\n");
+ }
+
+ start = end;
+ end = start + 1;
+ }
}
// dump triangle groups
- if ( strips_v.size() > 0 ) {
- fprintf(fp, "# triangle strips\n");
-
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)strip_materials.size() ) {
- // find next group
- material = strip_materials[start];
- while ( (end < (int)strip_materials.size()) &&
- (material == strip_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // make a list of points for the group
- point_list group_nodes;
- group_nodes.clear();
- Point3D bs_center;
- double bs_radius = 0;
- for ( i = start; i < end; ++i ) {
- for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
- group_nodes.push_back( wgs84_nodes[ strips_v[i][j] ] );
- bs_center = calc_center( group_nodes );
- bs_radius = sgCalcBoundingRadius( bs_center, group_nodes );
- }
- }
-
- // write group headers
- fprintf(fp, "\n");
- fprintf(fp, "# usemtl %s\n", material.c_str());
- fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
- bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
-
- // write groups
- for ( i = start; i < end; ++i ) {
- fprintf(fp, "ts");
- for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
- fprintf(fp, " %d/%d", strips_v[i][j], strips_tc[i][j] );
- }
- fprintf(fp, "\n");
- }
-
- start = end;
- end = start + 1;
- }
+ if ( ! strips_v.empty() ) {
+ fprintf(fp, "# triangle strips\n");
+
+ int start = 0;
+ int end = 1;
+ string material;
+ while ( start < (int)strip_materials.size() ) {
+ // find next group
+ material = strip_materials[start];
+ while ( (end < (int)strip_materials.size()) &&
+ (material == strip_materials[end]) )
+ {
+ // cout << "end = " << end << endl;
+ end++;
+ }
+ // cout << "group = " << start << " to " << end - 1 << endl;
+
+
+ SGSphered d( SGVec3d(0.0, 0.0, 0.0), -1.0 );
+ for ( i = start; i < end; ++i ) {
+ for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
+ d.expandBy(wgs84_nodes[ tris_v[i][j] ]);
+ }
+ }
+
+ SGVec3d bs_center = d.getCenter();
+ double bs_radius = d.getRadius();
+
+ // write group headers
+ fprintf(fp, "\n");
+ fprintf(fp, "# usemtl %s\n", material.c_str());
+ fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
+ bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
+
+ // write groups
+ for ( i = start; i < end; ++i ) {
+ fprintf(fp, "ts");
+ for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
+ fprintf(fp, " %d/%d", strips_v[i][j], strips_tcs[i][0][j] );
+ }
+ fprintf(fp, "\n");
+ }
+
+ start = end;
+ end = start + 1;
+ }
}
// close the file
fclose(fp);
- command = "gzip --force --best " + file;
- system(command.c_str());
+ string command = "gzip --force --best " + file.str();
+ int err = system(command.c_str());
+ if (err)
+ {
+ cout << "ERROR: gzip " << file.str() << " failed!" << endl;
+ }
+
+ return (err == 0);
+}
+void SGBinObject::read_properties(gzFile fp, int nproperties)
+{
+ sgSimpleBuffer buf;
+ uint32_t nbytes;
+
+ // read properties
+ for ( int j = 0; j < nproperties; ++j ) {
+ char prop_type;
+ sgReadChar( fp, &prop_type );
+ sgReadUInt( fp, &nbytes );
+ // cout << "property size = " << nbytes << endl;
+ if ( nbytes > buf.get_size() ) { buf.resize( nbytes ); }
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ }
+}
+
+bool SGBinObject::add_point( const SGBinObjectPoint& pt )
+{
+ // add the point info
+ pt_materials.push_back( pt.material );
+
+ pts_v.push_back( pt.v_list );
+ pts_n.push_back( pt.n_list );
+ pts_c.push_back( pt.c_list );
+
return true;
}
+
+bool SGBinObject::add_triangle( const SGBinObjectTriangle& tri )
+{
+ // add the triangle info and keep lists aligned
+ tri_materials.push_back( tri.material );
+ tris_v.push_back( tri.v_list );
+ tris_n.push_back( tri.n_list );
+ tris_c.push_back( tri.c_list );
+ tris_tcs.push_back( tri.tc_list );
+ tris_vas.push_back( tri.va_list );
+
+ return true;
+}
\ No newline at end of file
projects / simgear.git / blobdiff