public bool check_item(LASitem item)
{
switch(item.type)
{
case LASitem.Type.POINT10:
if(item.size!=20) return return_error("POINT10 has size != 20");
if(item.version>2) return return_error("POINT10 has version > 2");
break;
case LASitem.Type.GPSTIME11:
if(item.size!=8) return return_error("GPSTIME11 has size != 8");
if(item.version>2) return return_error("GPSTIME11 has version > 2");
break;
case LASitem.Type.RGB12:
if(item.size!=6) return return_error("RGB12 has size != 6");
if(item.version>2) return return_error("RGB12 has version > 2");
break;
case LASitem.Type.WAVEPACKET13:
if(item.size!=29) return return_error("WAVEPACKET13 has size != 29");
if(item.version>1) return return_error("WAVEPACKET13 has version > 1");
break;
case LASitem.Type.BYTE:
if(item.size<1) return return_error("BYTE has size < 1");
if(item.version>2) return return_error("BYTE has version > 2");
break;
case LASitem.Type.POINT14:
if(item.size!=30) return return_error("POINT14 has size != 30");
if(item.version>0) return return_error("POINT14 has version > 0");
break;
case LASitem.Type.RGBNIR14:
if(item.size!=8) return return_error("RGBNIR14 has size != 8");
if(item.version>0) return return_error("RGBNIR14 has version > 0");
break;
default:
if(true)
return return_error(string.Format("item unknown ({0},{1},{2})", item.type, item.size, item.version));
}
return true;
}
// should only be called *once*
public bool setup(uint num_items, LASitem[] items, LASzip laszip=null)
{
// is laszip exists then we must use its items
if(laszip!=null)
{
if(num_items!=laszip.num_items) return false;
if(items!=laszip.items) return false;
}
// create entropy encoder (if requested)
enc=null;
if(laszip!=null&&laszip.compressor!=0)
{
switch(laszip.coder)
{
case LASzip.CODER_ARITHMETIC: enc=new ArithmeticEncoder(); break;
default: return false; // entropy decoder not supported
}
}
// initizalize the writers
writers=null;
num_writers=num_items;
// disable chunking
chunk_size=uint.MaxValue;
// always create the raw writers
writers_raw=new LASwriteItem[num_writers];
for(uint i=0; i<num_writers; i++)
{
switch(items[i].type)
{
case LASitem.Type.POINT10: writers_raw[i]=new LASwriteItemRaw_POINT10(); break;
case LASitem.Type.GPSTIME11: writers_raw[i]=new LASwriteItemRaw_GPSTIME11(); break;
case LASitem.Type.RGB12: writers_raw[i]=new LASwriteItemRaw_RGB12(); break;
case LASitem.Type.WAVEPACKET13: writers_raw[i]=new LASwriteItemRaw_WAVEPACKET13(); break;
case LASitem.Type.BYTE: writers_raw[i]=new LASwriteItemRaw_BYTE(items[i].size); break;
case LASitem.Type.POINT14: writers_raw[i]=new LASwriteItemRaw_POINT14(); break;
case LASitem.Type.RGBNIR14: writers_raw[i]=new LASwriteItemRaw_RGBNIR14(); break;
default: return false;
}
}
// if needed create the compressed writers and set versions
if(enc!=null)
{
writers_compressed=new LASwriteItem[num_writers];
for(uint i=0; i<num_writers; i++)
{
switch(items[i].type)
{
case LASitem.Type.POINT10:
if(items[i].version==1) throw new NotSupportedException("Version 1 POINT10 is no longer supported, use version 2.");
else if(items[i].version==2) writers_compressed[i]=new LASwriteItemCompressed_POINT10_v2(enc);
else return false;
break;
case LASitem.Type.GPSTIME11:
if(items[i].version==1) throw new NotSupportedException("Version 1 GPSTIME11 is no longer supported, use version 2.");
else if(items[i].version==2) writers_compressed[i]=new LASwriteItemCompressed_GPSTIME11_v2(enc);
else return false;
break;
case LASitem.Type.RGB12:
if(items[i].version==1) throw new NotSupportedException("Version 1 RGB12 is no longer supported, use version 2.");
else if(items[i].version==2) writers_compressed[i]=new LASwriteItemCompressed_RGB12_v2(enc);
else return false;
break;
case LASitem.Type.WAVEPACKET13:
if(items[i].version==1) writers_compressed[i]=new LASwriteItemCompressed_WAVEPACKET13_v1(enc);
else return false;
break;
case LASitem.Type.BYTE:
if(items[i].version==1) throw new NotSupportedException("Version 1 BYTE is no longer supported, use version 2.");
else if(items[i].version==2) writers_compressed[i]=new LASwriteItemCompressed_BYTE_v2(enc, items[i].size);
else return false;
break;
default: return false;
}
}
if(laszip.compressor==LASzip.COMPRESSOR_POINTWISE_CHUNKED)
{
if(laszip.chunk_size!=0) chunk_size=laszip.chunk_size;
chunk_count=0;
init_chunking=true;
}
}
return true;
}
public unsafe bool unpack(byte[] bytes, int num)
{
// check input
if(num<34) return return_error("too few bytes to unpack");
if(((num-34)%6)!=0) return return_error("wrong number bytes to unpack");
if(((num-34)/6)==0) return return_error("zero items to unpack");
num_items=(ushort)((num-34)/6);
// create item list
items=new LASitem[num_items];
// do the unpacking
ushort i;
fixed(byte* pBytes=bytes)
{
byte* b=pBytes;
compressor=*((ushort*)b);
b+=2;
coder=*((ushort*)b);
b+=2;
version_major=*b;
b+=1;
version_minor=*b;
b+=1;
version_revision=*((ushort*)b);
b+=2;
options=*((uint*)b);
b+=4;
chunk_size=*((uint*)b);
b+=4;
number_of_special_evlrs=*((long*)b);
b+=8;
offset_to_special_evlrs=*((long*)b);
b+=8;
num_items=*((ushort*)b);
b+=2;
for(i=0; i<num_items; i++)
{
items[i].type=(LASitem.Type)(int)*((ushort*)b);
b+=2;
items[i].size=*((ushort*)b);
b+=2;
items[i].version=*((ushort*)b);
b+=2;
}
Debug.Assert((pBytes+num)==b);
// check if we support the contents
for(i=0; i<num_items; i++)
{
if(!check_item(items[i])) return false;
}
return true;
}
}
public bool setup(ushort num_items, LASitem[] items, ushort compressor)
{
// check input
if(!check_compressor(compressor)) return false;
if(!check_items(num_items, items)) return false;
// setup compressor
this.compressor=compressor;
if(this.compressor==COMPRESSOR_POINTWISE_CHUNKED)
{
if(chunk_size==0) chunk_size=CHUNK_SIZE_DEFAULT;
}
// prepare items
this.num_items=0;
this.items=null;
this.num_items=num_items;
this.items=new LASitem[num_items];
// setup items
for(int i=0; i<num_items; i++)
{
this.items[i]=items[i];
}
return true;
}
// go back and forth between item array and point type & size
public bool setup(out ushort num_items, out LASitem[] items, byte point_type, ushort point_size, ushort compressor=COMPRESSOR_NONE)
{
num_items=0;
items=null;
bool have_point14=false;
bool have_gps_time=false;
bool have_rgb=false;
bool have_nir=false;
bool have_wavepacket=false;
int extra_bytes_number=0;
// switch over the point types we know
switch(point_type)
{
case 0:
extra_bytes_number=(int)point_size-20;
break;
case 1:
have_gps_time=true;
extra_bytes_number=(int)point_size-28;
break;
case 2:
have_rgb=true;
extra_bytes_number=(int)point_size-26;
break;
case 3:
have_gps_time=true;
have_rgb=true;
extra_bytes_number=(int)point_size-34;
break;
case 4:
have_gps_time=true;
have_wavepacket=true;
extra_bytes_number=(int)point_size-57;
break;
case 5:
have_gps_time=true;
have_rgb=true;
have_wavepacket=true;
extra_bytes_number=(int)point_size-63;
break;
case 6:
have_point14=true;
extra_bytes_number=(int)point_size-30;
break;
case 7:
have_point14=true;
have_rgb=true;
extra_bytes_number=(int)point_size-36;
break;
case 8:
have_point14=true;
have_rgb=true;
have_nir=true;
extra_bytes_number=(int)point_size-38;
break;
case 9:
have_point14=true;
have_wavepacket=true;
extra_bytes_number=(int)point_size-59;
break;
case 10:
have_point14=true;
have_rgb=true;
have_nir=true;
have_wavepacket=true;
extra_bytes_number=(int)point_size-67;
break;
default:
if(true)
return return_error(string.Format("point type {0} unknown", point_type));
}
if(extra_bytes_number<0)
{
Console.Error.WriteLine("WARNING: point size {0} too small by {1} bytes for point type {2}. assuming point_size of {3}", point_size, -extra_bytes_number, point_type, point_size-extra_bytes_number);
extra_bytes_number=0;
}
// create item description
num_items=(ushort)(1+(have_gps_time?1:0)+(have_rgb?1:0)+(have_wavepacket?1:0)+(extra_bytes_number!=0?1:0));
items=new LASitem[num_items];
ushort i=1;
if(have_point14)
{
items[0]=new LASitem();
items[0].type=LASitem.Type.POINT14;
items[0].size=30;
items[0].version=0;
}
else
{
items[0]=new LASitem();
items[0].type=LASitem.Type.POINT10;
items[0].size=20;
items[0].version=0;
}
if(have_gps_time)
{
items[i]=new LASitem();
items[i].type=LASitem.Type.GPSTIME11;
items[i].size=8;
items[i].version=0;
i++;
}
if(have_rgb)
{
items[i]=new LASitem();
if(have_nir)
{
items[i].type=LASitem.Type.RGBNIR14;
items[i].size=8;
items[i].version=0;
}
else
{
items[i].type=LASitem.Type.RGB12;
items[i].size=6;
items[i].version=0;
}
i++;
}
if(have_wavepacket)
{
items[i]=new LASitem();
items[i].type=LASitem.Type.WAVEPACKET13;
items[i].size=29;
items[i].version=0;
i++;
}
if(extra_bytes_number!=0)
{
items[i]=new LASitem();
items[i].type=LASitem.Type.BYTE;
items[i].size=(ushort)extra_bytes_number;
items[i].version=0;
i++;
}
if(compressor!=0) request_version(2);
Debug.Assert(i==num_items);
return true;
}
public bool is_standard(ushort num_items, LASitem[] items, out byte point_type, out ushort record_length)
{
// this is always true
point_type=127;
record_length=0;
if(items==null) return return_error("LASitem array is zero");
for(int i=0; i<num_items; i++) record_length+=items[i].size;
// the minimal number of items is 1
if(num_items<1) return return_error("less than one LASitem entries");
// the maximal number of items is 5
if(num_items>5) return return_error("more than five LASitem entries");
if(items[0].is_type(LASitem.Type.POINT10))
{
// consider all the POINT10 combinations
if(num_items==1)
{
point_type=0;
Debug.Assert(record_length==20);
return true;
}
else
{
if(items[1].is_type(LASitem.Type.GPSTIME11))
{
if(num_items==2)
{
point_type=1;
Debug.Assert(record_length==28);
return true;
}
else
{
if(items[2].is_type(LASitem.Type.RGB12))
{
if(num_items==3)
{
point_type=3;
Debug.Assert(record_length==34);
return true;
}
else
{
if(items[3].is_type(LASitem.Type.WAVEPACKET13))
{
if(num_items==4)
{
point_type=5;
Debug.Assert(record_length==63);
return true;
}
else
{
if(items[4].is_type(LASitem.Type.BYTE))
{
if(num_items==5)
{
point_type=5;
Debug.Assert(record_length==(63+items[4].size));
return true;
}
}
}
}
else if(items[3].is_type(LASitem.Type.BYTE))
{
if(num_items==4)
{
point_type=3;
Debug.Assert(record_length==(34+items[3].size));
return true;
}
}
}
}
else if(items[2].is_type(LASitem.Type.WAVEPACKET13))
{
if(num_items==3)
{
point_type=4;
Debug.Assert(record_length==57);
return true;
}
else
{
if(items[3].is_type(LASitem.Type.BYTE))
{
if(num_items==4)
{
point_type=4;
Debug.Assert(record_length==(57+items[3].size));
return true;
}
}
}
}
else if(items[2].is_type(LASitem.Type.BYTE))
{
if(num_items==3)
{
point_type=1;
Debug.Assert(record_length==(28+items[2].size));
return true;
}
}
}
}
else if(items[1].is_type(LASitem.Type.RGB12))
{
if(num_items==2)
{
point_type=2;
Debug.Assert(record_length==26);
return true;
}
else
{
if(items[2].is_type(LASitem.Type.BYTE))
{
if(num_items==3)
{
point_type=2;
Debug.Assert(record_length==(26+items[2].size));
return true;
}
}
}
}
else if(items[1].is_type(LASitem.Type.BYTE))
{
if(num_items==2)
{
point_type=0;
Debug.Assert(record_length==(20+items[1].size));
return true;
}
}
}
}
else if(items[0].is_type(LASitem.Type.POINT14))
{
// consider all the POINT14 combinations
if(num_items==1)
{
point_type=6;
Debug.Assert(record_length==30);
return true;
}
else
{
if(items[1].is_type(LASitem.Type.RGB12))
{
if(num_items==2)
{
point_type=7;
Debug.Assert(record_length==36);
return true;
}
else
{
if(items[2].is_type(LASitem.Type.BYTE))
{
if(num_items==3)
{
point_type=7;
Debug.Assert(record_length==(36+items[2].size));
return true;
}
}
}
}
else if(items[1].is_type(LASitem.Type.RGBNIR14))
{
if(num_items==2)
{
point_type=8;
Debug.Assert(record_length==38);
return true;
}
else
{
if(items[2].is_type(LASitem.Type.WAVEPACKET13))
{
if(num_items==3)
{
point_type=10;
Debug.Assert(record_length==67);
return true;
}
else
{
if(items[3].is_type(LASitem.Type.BYTE))
{
if(num_items==4)
{
point_type=10;
Debug.Assert(record_length==(67+items[3].size));
return true;
}
}
}
}
else if(items[2].is_type(LASitem.Type.BYTE))
{
if(num_items==3)
{
point_type=8;
Debug.Assert(record_length==(38+items[2].size));
return true;
}
}
}
}
else if(items[1].is_type(LASitem.Type.WAVEPACKET13))
{
if(num_items==2)
{
point_type=9;
Debug.Assert(record_length==59);
return true;
}
else
{
if(items[2].is_type(LASitem.Type.BYTE))
{
if(num_items==3)
{
point_type=9;
Debug.Assert(record_length==(59+items[2].size));
return true;
}
}
}
}
else if(items[1].is_type(LASitem.Type.BYTE))
{
if(num_items==2)
{
point_type=6;
Debug.Assert(record_length==(30+items[1].size));
return true;
}
}
}
}
else
{
return_error("first LASitem is neither POINT10 nor POINT14");
}
return return_error("LASitem array does not match LAS specification 1.4");
}
public bool check_items(ushort num_items, LASitem[] items)
{
if(num_items==0) return return_error("number of items cannot be zero");
if(items==null) return return_error("items pointer cannot be NULL");
for(int i=0; i<num_items; i++)
{
if(!check_item(items[i])) return false;
}
return true;
}
// should only be called *once*
public bool setup(uint num_items, LASitem[] items, LASzip laszip=null)
{
// is laszip exists then we must use its items
if(laszip!=null)
{
if(num_items!=laszip.num_items) return false;
if(items!=laszip.items) return false;
}
// create entropy decoder (if requested)
dec=null;
if(laszip!=null&&laszip.compressor!=0)
{
switch(laszip.coder)
{
case LASzip.CODER_ARITHMETIC: dec=new ArithmeticDecoder(); break;
default: return false; // entropy decoder not supported
}
}
// initizalize the readers
readers=null;
num_readers=num_items;
// disable chunking
chunk_size=uint.MaxValue;
// always create the raw readers
readers_raw=new LASreadItem[num_readers];
for(int i=0; i<num_readers; i++)
{
switch(items[i].type)
{
case LASitem.Type.POINT10: readers_raw[i]=new LASreadItemRaw_POINT10(); break;
case LASitem.Type.GPSTIME11: readers_raw[i]=new LASreadItemRaw_GPSTIME11(); break;
case LASitem.Type.RGB12: readers_raw[i]=new LASreadItemRaw_RGB12(); break;
case LASitem.Type.WAVEPACKET13: readers_raw[i]=new LASreadItemRaw_WAVEPACKET13(); break;
case LASitem.Type.BYTE: readers_raw[i]=new LASreadItemRaw_BYTE(items[i].size); break;
case LASitem.Type.POINT14: readers_raw[i]=new LASreadItemRaw_POINT14(); break;
case LASitem.Type.RGBNIR14: readers_raw[i]=new LASreadItemRaw_RGBNIR14(); break;
default: return false;
}
point_size+=items[i].size;
}
if(dec!=null)
{
readers_compressed=new LASreadItem[num_readers];
// seeks with compressed data need a seek point
for(int i=0; i<num_readers; i++)
{
switch(items[i].type)
{
case LASitem.Type.POINT10:
if(items[i].version==1) readers_compressed[i]=new LASreadItemCompressed_POINT10_v1(dec);
else if(items[i].version==2) readers_compressed[i]=new LASreadItemCompressed_POINT10_v2(dec);
else return false;
break;
case LASitem.Type.GPSTIME11:
if(items[i].version==1) readers_compressed[i]=new LASreadItemCompressed_GPSTIME11_v1(dec);
else if(items[i].version==2) readers_compressed[i]=new LASreadItemCompressed_GPSTIME11_v2(dec);
else return false;
break;
case LASitem.Type.RGB12:
if(items[i].version==1) readers_compressed[i]=new LASreadItemCompressed_RGB12_v1(dec);
else if(items[i].version==2) readers_compressed[i]=new LASreadItemCompressed_RGB12_v2(dec);
else return false;
break;
case LASitem.Type.WAVEPACKET13:
if(items[i].version==1) readers_compressed[i]=new LASreadItemCompressed_WAVEPACKET13_v1(dec);
else return false;
break;
case LASitem.Type.BYTE:
seek_point.extra_bytes=new byte[items[i].size];
seek_point.num_extra_bytes=items[i].size;
if(items[i].version==1) readers_compressed[i]=new LASreadItemCompressed_BYTE_v1(dec, items[i].size);
else if(items[i].version==2) readers_compressed[i]=new LASreadItemCompressed_BYTE_v2(dec, items[i].size);
else return false;
break;
default: return false;
}
}
if(laszip.compressor==LASzip.COMPRESSOR_POINTWISE_CHUNKED)
{
if(laszip.chunk_size!=0) chunk_size=laszip.chunk_size;
number_chunks=uint.MaxValue;
}
}
return true;
}
public bool check_item(LASitem item)
{
switch (item.type)
{
case LASitem.Type.POINT10:
if (item.size != 20)
{
return(return_error("POINT10 has size != 20"));
}
if (item.version > 2)
{
return(return_error("POINT10 has version > 2"));
}
break;
case LASitem.Type.GPSTIME11:
if (item.size != 8)
{
return(return_error("GPSTIME11 has size != 8"));
}
if (item.version > 2)
{
return(return_error("GPSTIME11 has version > 2"));
}
break;
case LASitem.Type.RGB12:
if (item.size != 6)
{
return(return_error("RGB12 has size != 6"));
}
if (item.version > 2)
{
return(return_error("RGB12 has version > 2"));
}
break;
case LASitem.Type.WAVEPACKET13:
if (item.size != 29)
{
return(return_error("WAVEPACKET13 has size != 29"));
}
if (item.version > 1)
{
return(return_error("WAVEPACKET13 has version > 1"));
}
break;
case LASitem.Type.BYTE:
if (item.size < 1)
{
return(return_error("BYTE has size < 1"));
}
if (item.version > 2)
{
return(return_error("BYTE has version > 2"));
}
break;
case LASitem.Type.POINT14:
if (item.size != 30)
{
return(return_error("POINT14 has size != 30"));
}
if (item.version > 0)
{
return(return_error("POINT14 has version > 0"));
}
break;
case LASitem.Type.RGBNIR14:
if (item.size != 8)
{
return(return_error("RGBNIR14 has size != 8"));
}
if (item.version > 0)
{
return(return_error("RGBNIR14 has version > 0"));
}
break;
default:
if (true)
{
return(return_error(string.Format("item unknown ({0},{1},{2})", item.type, item.size, item.version)));
}
}
return(true);
}
public unsafe bool unpack(byte[] bytes, int num)
{
// check input
if (num < 34)
{
return(return_error("too few bytes to unpack"));
}
if (((num - 34) % 6) != 0)
{
return(return_error("wrong number bytes to unpack"));
}
if (((num - 34) / 6) == 0)
{
return(return_error("zero items to unpack"));
}
num_items = (ushort)((num - 34) / 6);
// create item list
items = new LASitem[num_items];
// do the unpacking
ushort i;
fixed(byte *pBytes = bytes)
{
byte *b = pBytes;
compressor = *((ushort *)b);
b += 2;
coder = *((ushort *)b);
b += 2;
version_major = *b;
b += 1;
version_minor = *b;
b += 1;
version_revision = *((ushort *)b);
b += 2;
options = *((uint *)b);
b += 4;
chunk_size = *((uint *)b);
b += 4;
number_of_special_evlrs = *((long *)b);
b += 8;
offset_to_special_evlrs = *((long *)b);
b += 8;
num_items = *((ushort *)b);
b += 2;
for (i = 0; i < num_items; i++)
{
items[i].type = (LASitem.Type)(int) * ((ushort *)b);
b += 2;
items[i].size = *((ushort *)b);
b += 2;
items[i].version = *((ushort *)b);
b += 2;
}
Debug.Assert((pBytes + num) == b);
// check if we support the contents
for (i = 0; i < num_items; i++)
{
if (!check_item(items[i]))
{
return(false);
}
}
return(true);
}
}
// go back and forth between item array and point type & size
public bool setup(out ushort num_items, out LASitem[] items, byte point_type, ushort point_size, ushort compressor = COMPRESSOR_NONE)
{
num_items = 0;
items = null;
bool have_point14 = false;
bool have_gps_time = false;
bool have_rgb = false;
bool have_nir = false;
bool have_wavepacket = false;
int extra_bytes_number = 0;
// switch over the point types we know
switch (point_type)
{
case 0:
extra_bytes_number = (int)point_size - 20;
break;
case 1:
have_gps_time = true;
extra_bytes_number = (int)point_size - 28;
break;
case 2:
have_rgb = true;
extra_bytes_number = (int)point_size - 26;
break;
case 3:
have_gps_time = true;
have_rgb = true;
extra_bytes_number = (int)point_size - 34;
break;
case 4:
have_gps_time = true;
have_wavepacket = true;
extra_bytes_number = (int)point_size - 57;
break;
case 5:
have_gps_time = true;
have_rgb = true;
have_wavepacket = true;
extra_bytes_number = (int)point_size - 63;
break;
case 6:
have_point14 = true;
extra_bytes_number = (int)point_size - 30;
break;
case 7:
have_point14 = true;
have_rgb = true;
extra_bytes_number = (int)point_size - 36;
break;
case 8:
have_point14 = true;
have_rgb = true;
have_nir = true;
extra_bytes_number = (int)point_size - 38;
break;
case 9:
have_point14 = true;
have_wavepacket = true;
extra_bytes_number = (int)point_size - 59;
break;
case 10:
have_point14 = true;
have_rgb = true;
have_nir = true;
have_wavepacket = true;
extra_bytes_number = (int)point_size - 67;
break;
default:
if (true)
{
return(return_error(string.Format("point type {0} unknown", point_type)));
}
}
if (extra_bytes_number < 0)
{
Console.Error.WriteLine("WARNING: point size {0} too small by {1} bytes for point type {2}. assuming point_size of {3}", point_size, -extra_bytes_number, point_type, point_size - extra_bytes_number);
extra_bytes_number = 0;
}
// create item description
num_items = (ushort)(1 + (have_gps_time?1:0) + (have_rgb?1:0) + (have_wavepacket?1:0) + (extra_bytes_number != 0?1:0));
items = new LASitem[num_items];
ushort i = 1;
if (have_point14)
{
items[0] = new LASitem();
items[0].type = LASitem.Type.POINT14;
items[0].size = 30;
items[0].version = 0;
}
else
{
items[0] = new LASitem();
items[0].type = LASitem.Type.POINT10;
items[0].size = 20;
items[0].version = 0;
}
if (have_gps_time)
{
items[i] = new LASitem();
items[i].type = LASitem.Type.GPSTIME11;
items[i].size = 8;
items[i].version = 0;
i++;
}
if (have_rgb)
{
items[i] = new LASitem();
if (have_nir)
{
items[i].type = LASitem.Type.RGBNIR14;
items[i].size = 8;
items[i].version = 0;
}
else
{
items[i].type = LASitem.Type.RGB12;
items[i].size = 6;
items[i].version = 0;
}
i++;
}
if (have_wavepacket)
{
items[i] = new LASitem();
items[i].type = LASitem.Type.WAVEPACKET13;
items[i].size = 29;
items[i].version = 0;
i++;
}
if (extra_bytes_number != 0)
{
items[i] = new LASitem();
items[i].type = LASitem.Type.BYTE;
items[i].size = (ushort)extra_bytes_number;
items[i].version = 0;
i++;
}
if (compressor != 0)
{
request_version(2);
}
Debug.Assert(i == num_items);
return(true);
}
