#include <time.h>
#include <cstring>
#include <cstdlib> // for system()
+#include <cassert>
#include <vector>
#include <string>
#include <iostream>
+#include <bitset>
#include <simgear/bucket/newbucket.hxx>
#include <simgear/misc/sg_path.hxx>
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;
- }
- SG_LOG(SG_EVENT, SG_DEBUG, "Creating a new buffer of size = " << size);
- ptr = new char[size];
+ resize(s);
}
- inline ~sgSimpleBuffer() {
- delete [] ptr;
+ ~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;
- }
- SG_LOG(SG_EVENT, SG_DEBUG, "resizing buffer to size = " << size);
- ptr = new char[size];
- }
+ 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];
+ }
+ }
+
+ 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);
}
};
+template <class T>
+static void read_indices(char* buffer,
+ size_t bytes,
+ int indexMask,
+ int_list& vertices,
+ int_list& normals,
+ int_list& colors,
+ int_list& texCoords)
+{
+ const int indexSize = sizeof(T) * std::bitset<32>(indexMask).count();
+ const int count = bytes / indexSize;
+
+// 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) texCoords.push_back(*src++);
+ } // of elements in the index
+}
+
+template <class T>
+void write_indice(gzFile fp, T value)
+{
+ sgWriteBytes(fp, sizeof(T), &value);
+}
+
+// specialize template to call endian-aware conversion methods
+template <>
+void write_indice(gzFile fp, uint16_t value)
+{
+ sgWriteUShort(fp, value);
+}
+
+template <>
+void write_indice(gzFile fp, uint32_t value)
+{
+ sgWriteUInt(fp, value);
+}
+
+
+template <class T>
+void write_indices(gzFile fp, unsigned char indexMask,
+ const int_list& vertices,
+ const int_list& normals,
+ const int_list& colors,
+ const int_list& texCoords)
+{
+ unsigned int count = vertices.size();
+ const int indexSize = sizeof(T) * std::bitset<32>(indexMask).count();
+ sgWriteUInt(fp, indexSize * count);
+
+ for (unsigned int i=0; i < count; ++i) {
+ write_indice(fp, static_cast<T>(vertices[i]));
+
+ if (!normals.empty()) {
+ write_indice(fp, static_cast<T>(normals[i]));
+ }
+ if (!colors.empty()) {
+ write_indice(fp, static_cast<T>(colors[i]));
+ }
+ if (!texCoords.empty()) {
+ write_indice(fp, static_cast<T>(texCoords[i]));
+ }
+ }
+}
+
+
// read object properties
-static void read_object( gzFile fp,
- int obj_type,
- int nproperties,
- int nelements,
- group_list *vertices,
- group_list *normals,
- group_list *colors,
- group_list *texcoords,
- string_list *materials )
+void SGBinObject::read_object( gzFile fp,
+ int obj_type,
+ int nproperties,
+ int nelements,
+ group_list& vertices,
+ group_list& normals,
+ group_list& colors,
+ group_list& texCoords,
+ string_list& materials)
{
unsigned int nbytes;
unsigned char idx_mask;
- int idx_size;
- bool do_vertices, do_normals, do_colors, do_texcoords;
- int j, k, idx;
+ int j;
sgSimpleBuffer buf( 32768 ); // 32 Kb
char material[256];
// default values
if ( obj_type == SG_POINTS ) {
- idx_size = 1;
- idx_mask = SG_IDX_VERTICES;
- do_vertices = true;
- do_normals = false;
- do_colors = false;
- do_texcoords = false;
+ idx_mask = SG_IDX_VERTICES;
} else {
- idx_size = 2;
- idx_mask = (char)(SG_IDX_VERTICES | SG_IDX_TEXCOORDS);
- do_vertices = true;
- do_normals = false;
- do_colors = false;
- do_texcoords = true;
+ idx_mask = (char)(SG_IDX_VERTICES | SG_IDX_TEXCOORDS);
}
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;
- } else if ( prop_type == SG_INDEX_TYPES ) {
- idx_mask = ptr[0];
- // cout << "idx_mask = " << (int)idx_mask << endl;
- idx_size = 0;
- do_vertices = false;
- do_normals = false;
- do_colors = false;
- do_texcoords = false;
- if ( idx_mask & SG_IDX_VERTICES ) {
- do_vertices = true;
- ++idx_size;
- }
- if ( idx_mask & SG_IDX_NORMALS ) {
- do_normals = true;
- ++idx_size;
- }
- if ( idx_mask & SG_IDX_COLORS ) {
- do_colors = true;
- ++idx_size;
- }
- if ( idx_mask & SG_IDX_TEXCOORDS ) {
- do_texcoords = true;
- ++idx_size;
- }
- }
+ char prop_type;
+ sgReadChar( fp, &prop_type );
+ sgReadUInt( fp, &nbytes );
+ buf.resize(nbytes);
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+ if ( prop_type == SG_MATERIAL ) {
+ if (nbytes > 255) {
+ nbytes = 255;
+ }
+ strncpy( material, ptr, nbytes );
+ material[nbytes] = '\0';
+ // cout << "material type = " << material << endl;
+ } else if ( prop_type == SG_INDEX_TYPES ) {
+ idx_mask = ptr[0];
+ //cout << std::hex << "index mask:" << idx_mask << std::dec << endl;
+ }
}
- 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 / (idx_size * sizeof(unsigned short));
- unsigned short *sptr = (unsigned short *)ptr;
- int_list vs; vs.clear();
- int_list ns; ns.clear();
- int_list cs; cs.clear();
- int_list tcs; tcs.clear();
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- for ( idx = 0; idx < idx_size; ++idx ) {
- sgEndianSwap( (uint16_t *)&(sptr[idx]) );
- }
- }
- idx = 0;
- if ( do_vertices ) {
- vs.push_back( sptr[idx++] );
- }
- if ( do_normals ) {
- ns.push_back( sptr[idx++] );
- }
- if ( do_colors ) {
- cs.push_back( sptr[idx++] );
- }
- if ( do_texcoords ) {
- tcs.push_back( sptr[idx++] );
- }
- // cout << sptr[0] << " ";
- sptr += idx_size;
- }
- // cout << endl;
- vertices->push_back( vs );
- normals->push_back( ns );
- colors->push_back( cs );
- texcoords->push_back( tcs );
- materials->push_back( material );
+ if ( sgReadError() ) {
+ cout << "We detected an error reading object properties" << endl;
+ return;
}
+
+ for ( j = 0; j < nelements; ++j ) {
+ sgReadUInt( fp, &nbytes );
+ if ( sgReadError() ) {
+ cout << "We detected an error reading element size for :" << j << endl;
+ return;
+ }
+
+ buf.resize( nbytes );
+ char *ptr = buf.get_ptr();
+ sgReadBytes( fp, nbytes, ptr );
+
+ if ( sgReadError() ) {
+ cout << "We detected an error reading object element:" << j << "bytes="<< nbytes << endl;
+ return;
+ }
+
+ int_list vs;
+ int_list ns;
+ int_list cs;
+ int_list tcs;
+ if (version >= 10) {
+ read_indices<uint32_t>(ptr, nbytes, idx_mask, vs, ns, cs, tcs);
+ } else {
+ read_indices<uint16_t>(ptr, nbytes, idx_mask, vs, ns, cs, tcs);
+ }
+
+ vertices.push_back( vs );
+ normals.push_back( ns );
+ colors.push_back( cs );
+ texCoords.push_back( tcs );
+ materials.push_back( material );
+ } // of element iteration
}
// read a binary file and populate the provided structures.
bool SGBinObject::read_bin( const string& file ) {
SGVec3d p;
- int i, j, k;
+ int i, k;
+ size_t j;
unsigned int nbytes;
sgSimpleBuffer buf( 32768 ); // 32 Kb
gzFile fp;
if ( (fp = gzopen( file.c_str(), "rb" )) == NULL ) {
- string filegz = file + ".gz";
- if ( (fp = gzopen( filegz.c_str(), "rb" )) == NULL ) {
+ 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;
- }
+ return false;
+ }
}
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' ) {
+ // cout << "Good header" << endl;
+ // read file version
+ version = (header & 0x0000FFFF);
+ // cout << "File version = " << version << endl;
} else {
- // close the file before we return
- gzclose(fp);
+ // close the file before we return
+ gzclose(fp);
- return false;
+ return false;
}
// read creation time
#endif
// read number of top level objects
- unsigned short nobjects;
- if ( version >= 7 ) {
- sgReadUShort( fp, &nobjects );
+ 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 {
- short tmp;
- sgReadShort( fp, &tmp );
- nobjects = tmp;
+ int16_t v;
+ sgReadShort( fp, &v );
+ nobjects = v;
}
- // cout << "Total objects to read = " << nobjects << endl;
+
+ //cout << "Total objects to read = " << nobjects << endl;
+ if ( sgReadError() ) {
+ cout << "We detected an error while reading the file header" << endl;
+ return false;
+ }
+
// read in objects
for ( i = 0; i < nobjects; ++i ) {
- // read object header
- char obj_type;
- unsigned short nproperties, nelements;
- sgReadChar( fp, &obj_type );
- if ( version >= 7 ) {
- sgReadUShort( fp, &nproperties );
- sgReadUShort( fp, &nelements );
+ // 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 {
- short tmp;
- sgReadShort( fp, &tmp );
- nproperties = tmp;
- sgReadShort( fp, &tmp );
- nelements = tmp;
+ int16_t v;
+ sgReadShort( fp, &v );
+ nproperties = v;
+ sgReadShort( fp, &v );
+ nelements = v;
}
- // 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_t *)&(dptr[0]) );
- sgEndianSwap( (uint64_t *)&(dptr[1]) );
- sgEndianSwap( (uint64_t *)&(dptr[2]) );
- }
- gbs_center = SGVec3d( dptr[0], dptr[1], dptr[2] );
- // cout << "Center = " << gbs_center << endl;
- ptr += sizeof(double) * 3;
-
- float *fptr = (float *)ptr;
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (uint32_t *)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;
- wgs84_nodes.reserve( count );
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (uint32_t *)&(fptr[0]) );
- sgEndianSwap( (uint32_t *)&(fptr[1]) );
- sgEndianSwap( (uint32_t *)&(fptr[2]) );
- }
- wgs84_nodes.push_back( SGVec3d(fptr[0], fptr[1], fptr[2]) );
- fptr += 3;
- }
- }
- } else if ( obj_type == SG_COLOR_LIST ) {
- // read color 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 color 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) * 4);
- float *fptr = (float *)ptr;
- colors.reserve(count);
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (uint32_t *)&(fptr[0]) );
- sgEndianSwap( (uint32_t *)&(fptr[1]) );
- sgEndianSwap( (uint32_t *)&(fptr[2]) );
- sgEndianSwap( (uint32_t *)&(fptr[3]) );
- }
- SGVec4f color( fptr[0], fptr[1], fptr[2], fptr[3] );
- colors.push_back( color );
- fptr += 4;
- }
- }
- } 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;
- 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
- 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;
- texcoords.reserve(count);
- for ( k = 0; k < count; ++k ) {
- if ( sgIsBigEndian() ) {
- sgEndianSwap( (uint32_t *)&(fptr[0]) );
- sgEndianSwap( (uint32_t *)&(fptr[1]) );
- }
- texcoords.push_back( SGVec2f( fptr[0], fptr[1] ) );
- fptr += 2;
- }
- }
- } else if ( obj_type == SG_POINTS ) {
- // read point elements
- read_object( fp, SG_POINTS, nproperties, nelements,
- &pts_v, &pts_n, &pts_c, &pts_tc, &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_tc, &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_tc,
- &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_tc, &fan_materials );
- } 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 );
- }
- }
+ //cout << "object " << i << " = " << (int)obj_type << " props = "
+ // << nproperties << " elements = " << nelements << endl;
+
+ 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_POINTS ) {
+ // read point elements
+ read_object( fp, SG_POINTS, nproperties, nelements,
+ pts_v, pts_n, pts_c, pts_tc, 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_tc, 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_tc,
+ 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_tc, 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() ) {
+ cout << "We detected an error while reading object:" << i << endl;
+ return false;
+ }
}
// close the file
gzclose(fp);
if ( sgReadError() ) {
- cout << "We detected an error while reading the file." << endl;
- return false;
+ 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);
+ }
+}
+
+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_list& texCoords, const string_list& materials)
+{
+ if (verts.empty()) {
+ return;
+ }
+
+ unsigned int start = 0, end = 1;
+ string m;
+ 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) {}
+
+ const int count = end - start;
+ write_header(fp, type, 2, count);
+
+ // properties
+ sgWriteChar( fp, (char)SG_MATERIAL ); // property
+ sgWriteUInt( fp, m.length() ); // nbytes
+ sgWriteBytes( fp, m.length(), m.c_str() );
+
+ unsigned char idx_mask = 0;
+ if ( !verts.empty() && !verts.front().empty()) idx_mask |= SG_IDX_VERTICES;
+ if ( !normals.empty() && !normals.front().empty()) idx_mask |= SG_IDX_NORMALS;
+ if ( !colors.empty() && !colors.front().empty()) idx_mask |= SG_IDX_COLORS;
+ if ( !texCoords.empty() && !texCoords.front().empty()) idx_mask |= SG_IDX_TEXCOORDS;
+ sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
+ sgWriteUInt( fp, 1 ); // nbytes
+ sgWriteChar( fp, idx_mask );
+
+// cout << "material:" << m << ", count =" << count << endl;
+ // elements
+ for (unsigned int i=start; i < end; ++i) {
+ if (version == 7) {
+ write_indices<uint16_t>(fp, idx_mask, verts[i], normals[i], colors[i], texCoords[i]);
+ } else {
+ write_indices<uint32_t>(fp, idx_mask, verts[i], normals[i], colors[i], texCoords[i]);
+ }
+ }
+
+ 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 )
{
- int i, j;
- unsigned char idx_mask;
- int idx_size;
SGPath file = base + "/" + b.gen_base_path() + "/" + name + ".gz";
- file.create_dir( 0755 );
+ return write_bin_file(file);
+}
+
+bool SGBinObject::write_bin_file(const SGPath& file)
+{
+ int i;
+
+ SGPath file2(file);
+ file2.create_dir( 0755 );
cout << "Output file = " << file.str() << endl;
gzFile fp;
if ( (fp = gzopen( file.c_str(), "wb9" )) == NULL ) {
- cout << "ERROR: opening " << file.str() << " for writing!" << endl;
- return false;
+ cout << "ERROR: opening " << file.str() << " for writing!" << endl;
+ return false;
}
sgClearWriteError();
cout << "points size = " << pts_v.size() << " pt_materials = "
- << pt_materials.size() << endl;
+ << pt_materials.size() << endl;
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 << "nodes = " << wgs84_nodes.size() << endl;
cout << "colors = " << colors.size() << endl;
cout << "normals = " << normals.size() << endl;
cout << "tex coords = " << texcoords.size() << endl;
+ version = 10;
+ if (wgs84_nodes.size() < 0xffff) {
+ 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, (int32_t)calendar_time );
// calculate and write number of top level objects
- string material;
- int start;
- int end;
- unsigned short nobjects = 0;
- nobjects++; // for gbs
- nobjects++; // for vertices
- nobjects++; // for colors
- nobjects++; // for normals
- nobjects++; // for texcoords
-
- // points
- unsigned short npts = 0;
- start = 0; end = 1;
- while ( start < (int)pt_materials.size() ) {
- material = pt_materials[start];
- while ( (end < (int)pt_materials.size()) &&
- (material == pt_materials[end]) ) {
- end++;
- }
- npts++;
- start = end; end = start + 1;
- }
- nobjects += npts;
-
- // tris
- unsigned 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
- unsigned 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
- unsigned 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;
+ 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);
cout << "total top level objects = " << nobjects << endl;
- sgWriteUShort( fp, nobjects );
-
+ if (version == 7) {
+ sgWriteUShort( fp, (uint16_t) nobjects );
+ } else {
+ sgWriteInt( fp, nobjects );
+ }
+
// write bounding sphere
- sgWriteChar( fp, (char)SG_BOUNDING_SPHERE ); // type
- sgWriteUShort( fp, 0 ); // nproperties
- sgWriteUShort( fp, 1 ); // nelements
-
+ write_header( fp, SG_BOUNDING_SPHERE, 0, 1);
sgWriteUInt( fp, sizeof(double) * 3 + sizeof(float) ); // nbytes
sgWritedVec3( fp, gbs_center );
sgWriteFloat( fp, gbs_radius );
// dump vertex list
- sgWriteChar( fp, (char)SG_VERTEX_LIST ); // type
- sgWriteUShort( fp, 0 ); // nproperties
- sgWriteUShort( 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 ) {
sgWriteVec3( fp, toVec3f(wgs84_nodes[i] - gbs_center));
}
// dump vertex color list
- sgWriteChar( fp, (char)SG_COLOR_LIST ); // type
- sgWriteUShort( fp, 0 ); // nproperties
- sgWriteUShort( fp, 1 ); // nelements
+ 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
- sgWriteUShort( fp, 0 ); // nproperties
- sgWriteUShort( 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 ) {
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 );
+ 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
- sgWriteUShort( fp, 0 ); // nproperties
- sgWriteUShort( 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 ) {
sgWriteVec2( fp, texcoords[i]);
}
- // dump point groups if they exist
- if ( pts_v.size() > 0 ) {
- int start = 0;
- int end = 1;
- string material;
- while ( start < (int)pt_materials.size() ) {
- // find next group
- material = pt_materials[start];
- while ( (end < (int)pt_materials.size()) &&
- (material == pt_materials[end]) )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // write group headers
- sgWriteChar( fp, (char)SG_POINTS ); // type
- sgWriteUShort( fp, 2 ); // nproperties
- sgWriteUShort( fp, end - start ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- idx_mask = 0;
- idx_size = 0;
- if ( pts_v.size() ) { idx_mask |= SG_IDX_VERTICES; ++idx_size; }
- if ( pts_n.size() ) { idx_mask |= SG_IDX_NORMALS; ++idx_size; }
- if ( pts_c.size() ) { idx_mask |= SG_IDX_COLORS; ++idx_size; }
- if ( pts_tc.size() ) { idx_mask |= SG_IDX_TEXCOORDS; ++idx_size; }
- sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
- sgWriteUInt( fp, 1 ); // nbytes
- sgWriteChar( fp, idx_mask );
-
- // write strips
- for ( i = start; i < end; ++i ) {
- // nbytes
- sgWriteUInt( fp, pts_v[i].size() * idx_size
- * sizeof(unsigned short) );
- for ( j = 0; j < (int)pts_v[i].size(); ++j ) {
- if ( pts_v.size() ) {
- sgWriteUShort( fp, (unsigned short)pts_v[i][j] );
- }
- if ( pts_n.size() ) {
- sgWriteUShort( fp, (unsigned short)pts_n[i][j] );
- }
- if ( pts_c.size() ) {
- sgWriteUShort( fp, (unsigned short)pts_c[i][j] );
- }
- if ( pts_tc.size() ) {
- sgWriteUShort( fp, (unsigned short)pts_tc[i][j] );
- }
- }
- }
-
- start = end;
- end = start + 1;
- }
- }
-
- // 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]) &&
- 3*(end-start) < 32760 )
- {
- // cout << "end = " << end << endl;
- end++;
- }
- // cout << "group = " << start << " to " << end - 1 << endl;
-
- // write group headers
- sgWriteChar( fp, (char)SG_TRIANGLE_FACES ); // type
- sgWriteUShort( fp, 2 ); // nproperties
- sgWriteUShort( fp, 1 ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- idx_mask = 0;
- idx_size = 0;
- if ( tris_v.size() ) { idx_mask |= SG_IDX_VERTICES; ++idx_size; }
- if ( tris_n.size() ) { idx_mask |= SG_IDX_NORMALS; ++idx_size; }
- if ( tris_c.size() ) { idx_mask |= SG_IDX_COLORS; ++idx_size; }
- if ( tris_tc.size() ) { idx_mask |= SG_IDX_TEXCOORDS; ++idx_size; }
- sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
- sgWriteUInt( fp, 1 ); // nbytes
- sgWriteChar( fp, idx_mask );
-
- // nbytes
- sgWriteUInt( fp, (end - start) * 3 * idx_size
- * sizeof(unsigned short) );
-
- // write group
- for ( i = start; i < end; ++i ) {
- for ( j = 0; j < 3; ++j ) {
- if ( tris_v.size() ) {
- sgWriteUShort( fp, (unsigned short)tris_v[i][j] );
- }
- if ( tris_n.size() ) {
- sgWriteUShort( fp, (unsigned short)tris_n[i][j] );
- }
- if ( tris_c.size() ) {
- sgWriteUShort( fp, (unsigned short)tris_c[i][j] );
- }
- if ( tris_tc.size() ) {
- sgWriteUShort( fp, (unsigned 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
- sgWriteUShort( fp, 2 ); // nproperties
- sgWriteUShort( fp, end - start ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- idx_mask = 0;
- idx_size = 0;
- if ( strips_v.size() ) { idx_mask |= SG_IDX_VERTICES; ++idx_size; }
- if ( strips_n.size() ) { idx_mask |= SG_IDX_NORMALS; ++idx_size; }
- if ( strips_c.size() ) { idx_mask |= SG_IDX_COLORS; ++idx_size; }
- if ( strips_tc.size() ) { idx_mask |= SG_IDX_TEXCOORDS; ++idx_size;}
- sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
- sgWriteUInt( fp, 1 ); // nbytes
- sgWriteChar( fp, idx_mask );
-
- // write strips
- for ( i = start; i < end; ++i ) {
- // nbytes
- sgWriteUInt( fp, strips_v[i].size() * idx_size
- * sizeof(unsigned short));
- for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
- if ( strips_v.size() ) {
- sgWriteUShort( fp, (unsigned short)strips_v[i][j] );
- }
- if ( strips_n.size() ) {
- sgWriteUShort( fp, (unsigned short)strips_n[i][j] );
- }
- if ( strips_c.size() ) {
- sgWriteUShort( fp, (unsigned short)strips_c[i][j] );
- }
- if ( strips_tc.size() ) {
- sgWriteUShort( fp, (unsigned 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
- sgWriteUShort( fp, 2 ); // nproperties
- sgWriteUShort( fp, end - start ); // nelements
-
- sgWriteChar( fp, (char)SG_MATERIAL ); // property
- sgWriteUInt( fp, material.length() ); // nbytes
- sgWriteBytes( fp, material.length(), material.c_str() );
-
- idx_mask = 0;
- idx_size = 0;
- if ( fans_v.size() ) { idx_mask |= SG_IDX_VERTICES; ++idx_size; }
- if ( fans_n.size() ) { idx_mask |= SG_IDX_NORMALS; ++idx_size; }
- if ( fans_c.size() ) { idx_mask |= SG_IDX_COLORS; ++idx_size; }
- if ( fans_tc.size() ) { idx_mask |= SG_IDX_TEXCOORDS; ++idx_size; }
- sgWriteChar( fp, (char)SG_INDEX_TYPES ); // property
- sgWriteUInt( fp, 1 ); // nbytes
- sgWriteChar( fp, idx_mask );
-
- // write fans
- for ( i = start; i < end; ++i ) {
- // nbytes
- sgWriteUInt( fp, fans_v[i].size() * idx_size
- * sizeof(unsigned short) );
- for ( j = 0; j < (int)fans_v[i].size(); ++j ) {
- if ( fans_v.size() ) {
- sgWriteUShort( fp, (unsigned short)fans_v[i][j] );
- }
- if ( fans_n.size() ) {
- sgWriteUShort( fp, (unsigned short)fans_n[i][j] );
- }
- if ( fans_c.size() ) {
- sgWriteUShort( fp, (unsigned short)fans_c[i][j] );
- }
- if ( fans_tc.size() ) {
- sgWriteUShort( fp, (unsigned short)fans_tc[i][j] );
- }
- }
- }
-
- start = end;
- end = start + 1;
- }
- }
-
+ write_objects(fp, SG_POINTS, pts_v, pts_n, pts_c, pts_tc, pt_materials);
+ write_objects(fp, SG_TRIANGLE_FACES, tris_v, tris_n, tris_c, tris_tc, tri_materials);
+ write_objects(fp, SG_TRIANGLE_STRIPS, strips_v, strips_n, strips_c, strips_tc, strip_materials);
+ write_objects(fp, SG_TRIANGLE_FANS, fans_v, fans_n, fans_c, fans_tc, fan_materials);
+
// close the file
gzclose(fp);
if ( sgWriteError() ) {
- cout << "We detected an error while writing the file." << endl;
- return false;
+ cout << "We detected an error while writing the file." << 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 )
{
int i, j;
FILE *fp;
if ( (fp = fopen( file.c_str(), "w" )) == NULL ) {
- cout << "ERROR: opening " << file.str() << " 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 ) {
SGVec3d p = wgs84_nodes[i] - gbs_center;
-
- fprintf(fp, "v %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
+
+ 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 ) {
SGVec3f p = normals[i];
- fprintf(fp, "vn %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
+ fprintf(fp, "vn %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
}
fprintf(fp, "\n");
fprintf(fp, "# texture coordinate list\n");
for ( i = 0; i < (int)texcoords.size(); ++i ) {
SGVec2f p = texcoords[i];
- fprintf(fp, "vt %.5f %.5f\n", p.x(), p.y() );
+ 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;
+ 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;
for ( i = start; i < end; ++i ) {
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_tc[i][j] );
- }
- fprintf(fp, "\n");
- }
-
- start = end;
- end = start + 1;
- }
+
+ // 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;
+ }
}
// 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;
+ 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 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_tc[i][j] );
- }
- fprintf(fp, "\n");
- }
-
- start = end;
- end = start + 1;
- }
+ // 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;
+ }
}
// close the file
return true;
}
+
+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 );
+ }
+}
+
projects / simgear.git / commitdiff