MrSID Decode SDK for LiDAR Reference Manual
1.1.4.4709
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TXTPointReader reads LiDAR-based Text files. More...
#include <TXTPointReader.h>
Public Member Functions | |
void | init (const char *path, const char *format, size_t header, bool doFullInit) |
Initialize with filename and format string. More... | |
void | init (IO *io, const char *format, size_t header, bool doFullInit) |
Initialize with IO object and format string. More... | |
void | init (const char *path, const PointInfo &fieldInfo, size_t header, bool doFullInit) |
Initialize with filename and field list. More... | |
void | init (IO *io, const PointInfo &fieldInfo, size_t header, bool doFullInit) |
Initialize with IO object and field list. More... | |
void | initBoundsAndNumPoints (void) |
Setup the bounds and number of points. More... | |
const char * | getFileFormatString (void) const |
Get the file type and version. More... | |
void | loadMetadata (Metadata &metadata, bool sanitize) const |
Load the point clouds metadata. More... | |
double | getTotalWork (const Bounds &bounds, double fraction) const |
Get the amount of work needed to decode bounds. More... | |
PointIterator * | createIterator (const Bounds &bounds, double fraction, const PointInfo &pointInfo, ProgressDelegate *delegate) const |
Get a PointIterator for a given bounds. More... | |
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const PointInfo & | getPointInfo (void) const |
Get the point information. More... | |
count_type | getNumPoints (void) const |
Get the number of points. More... | |
const char * | getWKT (void) const |
Get the spatial reference system. More... | |
void | overrideWKT (const char *wkt) |
const Bounds & | getBounds (void) const |
Get the bounding box. More... | |
const double * | getScale (void) const |
Get the quantization scale. More... | |
const double * | getOffset (void) const |
Get the quantization offset. More... | |
char const *const * | getClassIdNames (void) const |
Get the classification names. More... | |
size_t | getNumClassIdNames (void) const |
Get the number of classification names. More... | |
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size_t | getNumChannels (void) const |
Get the number of channels. More... | |
bool | hasChannel (const char *name) const |
Determine if there is a channel with a given name. More... | |
const ChannelInfo & | getChannel (size_t idx) const |
Access the channel info. More... | |
const ChannelInfo * | getChannel (const char *name) const |
Access the channel data. More... | |
size_t | read (const Bounds &bounds, PointData &points, ProgressDelegate *delegate) const |
Fill the point buffer with the best sample of the point cloud in bounds. More... | |
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int | retain (void) const |
Increment the reference count by one. More... | |
int | release (void) const |
Decrement the reference count by one. More... | |
Static Public Member Functions | |
static void | parseFormat (const char *format, PointInfo &fieldInfo) |
Build a ChannelInfo array form a format string. More... | |
static void | parseFormat (const char *format, PointInfo &fieldInfo, const PointInfo &pointInfo) |
Build a ChannelInfo array form a format string. More... | |
static void | parseQuantization (const char *format, PointInfo &fieldInfo) |
Update the quantization values of a PointInfo. More... | |
Protected Member Functions | |
void | setBoundsAndNumPoints (bool doFullInit) |
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void | setPointInfo (const PointInfo &pointInfo) |
Set the point information. More... | |
void | setNumPoints (count_type numPoints) |
Set the number of points in the point cloud. More... | |
void | setBounds (const Bounds &bounds) |
Set the bounding box of the point cloud. More... | |
void | setWKT (const char *wkt) |
Set the spatial reference system. More... | |
void | setQuantization (const double scale[3], const double offset[3]) |
Set the quantization scale and offset. More... | |
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Object (void) | |
virtual | ~ Object (void) |
Protected Attributes | |
IO * | m_io |
size_t | m_header |
PointInfo | m_fieldInfo |
double | m_totalWork |
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bool | m_ignoreNativeWKTMetadata |
Additional Inherited Members | |
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typedef lt_int64 | count_type |
The TXTPointReader class reads point clouds from text files. Each line of the text file is point with the fields delimited by white space.
Definition at line 26 of file TXTPointReader.h.
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This methods returns a PointIterator for the given bounds.
bounds | the region of interest (HUGE_VAL are handled) |
fraction | the fraction of the points you want (use 1.0 for all the points and use 0.1 to keep every tenth point) |
channelInfo | the list of channels to be extracted |
numChannels | the number of channels to be extracted |
delegate | a ProgressDelegate for feedback (can be NULL) |
Implements PointSource.
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This method returns a string the contains the File Type and version of the PointReader. For example for a MrSID file this will will return "MG4 4.0.0.1".
Implements PointReader.
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This method returns the amount of work needed to decode the points in bounds. getTotalWork() is used with ProgressDelegate to track the progress of a decode or encode.
bounds | the region of interest |
fraction | the fraction of the points you want (use 1.0 for all the points and use 0.1 to keep every tenth point) |
Reimplemented from PointReader.
void TXTPointReader::init | ( | const char * | path, |
const char * | format, | ||
size_t | header, | ||
bool | doFullInit | ||
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This method initializes the reader with a filename and format string.
path | the filename |
format | the channel layout format string, see TXTPointReader::parseString(). |
header | the number of header lines to skip |
doFullInit | if true call initBoundsAndNumPoints() |
void TXTPointReader::init | ( | IO * | io, |
const char * | format, | ||
size_t | header, | ||
bool | doFullInit | ||
) |
This method initializes the reader with a IO object and format string.
io | the data source |
format | the channel layout format string, see TXTPointReader::parseString(). |
header | the number of header lines to skip |
doFullInit | if true call initBoundsAndNumPoints() |
void TXTPointReader::init | ( | const char * | path, |
const PointInfo & | fieldInfo, | ||
size_t | header, | ||
bool | doFullInit | ||
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This method initializes the reader with a filename and field list.
path | the filename |
fieldInfo | a ChannelInfo array describing the column layout |
header | the number of header lines to skip |
doFullInit | if true call initBoundsAndNumPoints() |
This method initializes the reader with IO object and field list.
io | the data source |
fieldInfo | a ChannelInfo array describing the column layout |
header | the number of header lines to skip |
doFullInit | if true call initBoundsAndNumPoints() |
void TXTPointReader::initBoundsAndNumPoints | ( | void | ) |
This method reads the input text file to figures out the number of points and the bounding box. This method can take some time. If the method has not be called getBounds() will return Bounds::Huge() and getNumPoints() will return 2**64 - 1.
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This method loads the metadata for the point cloud. PointSource only load metadata on demand to reduce memory usage.
metadata | The metadata object to fill. |
sanitize | If true remove vendor-specific metadata that we don't understand for example, Merrick::102 ("Index to page of point records") |
Implements PointSource.
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The function builds a ChannelInfo array based on the format string.
Format syntax:
format | the format string |
fieldInfo | the ouptut ChannelInfo array |
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The function builds a ChannelInfo array based on the format string and the use the given ChannelInfo array's data types.
format | the format string |
fieldInfo | the ouptut ChannelInfo array |
pointInfo | the input ChannelInfo array |
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The function updates the quantization values of the PointInfo based on the format string.
Format syntax: <channel ids>=""><quantization scale>[,<channel ids>=""><quantization scale>]*
Where: <channel ids>=""> is one or more of the following values:
Example: xyz@0, .01t@0.0 0000 01x@0.0, 1y@0.0, 1z@0.0, 1t@0.0 (both have the same effect) 0000 01
format | the format string |
fieldInfo | the PointInfo for updating |
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Definition at line 187 of file TXTPointReader.h.
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Definition at line 186 of file TXTPointReader.h.
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Definition at line 185 of file TXTPointReader.h.
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Definition at line 188 of file TXTPointReader.h.
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