RDB 2: riegl::rdb::Pointcloud Class Reference

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riegl::rdb::Pointcloud Class Reference

Main point cloud database class. More...

`#include <pointcloud.hpp>`

## Public Member Functions
Constructors and destructor
| Pointcloud (Context context=Context())
| Create Pointcloud instance. More...
| ~Pointcloud ()
| Destroy Pointcloud instance. More...
Database Access
void | create (const std::string &location, const pointcloud::CreateSettings &settings)
| Create new database. More...
void | create (const std::string &location, const pointcloud::CreateSettings &settings, const std::string &schema, const bool optionals=false)
| Create new database. More...
void | open (const std::string &location, const pointcloud::OpenSettings &settings)
| Open existing database. More...
void | close ()
| Close database. More...
bool | isOpen () const
| Check if a database is open. More...
bool | isEmpty () const
| Check if a database is empty. More...
std::string | getUUID () const
| Get database file's UUID. More...
std::string | inspect (const std::uint8_t format)
| File statistics and debugging information. More...
void | clearCache ()
| Clear internal data cache. More...
Database Management
pointcloud::Management & | management ()
| Basic point cloud management interface. More...
const pointcloud::Management & | management () const
| Basic point cloud management interface. More...
pointcloud::Changelog & | changelog ()
| Manage point cloud changelog. More...
const pointcloud::Changelog & | changelog () const
| Manage point cloud changelog. More...
pointcloud::MetaData & | metaData ()
| Manage point cloud meta data. More...
const pointcloud::MetaData & | metaData () const
| Manage point cloud meta data. More...
pointcloud::PointAttributes & | pointAttribute ()
| Manage point attributes. More...
const pointcloud::PointAttributes & | pointAttribute () const
| Manage point attributes. More...
pointcloud::Transactions & | transaction ()
| Manage point cloud transactions. More...
const pointcloud::Transactions & | transaction () const
| Manage point cloud transactions. More...
Point Queries
pointcloud::QueryInsert | insert ()
| Insert points. More...
pointcloud::QueryUpdate | update ()
| Update points. More...
pointcloud::QuerySelect | select (const std::string &filter=std::string())
| Select points. More...
pointcloud::QuerySelect | select (const pointcloud::GraphNode::ID &node, const std::string &filter=std::string())
| Select points by index node. More...
pointcloud::QuerySelect | select (const std::vector< pointcloud::GraphNode::ID > &nodes, const std::string &filter=std::string())
| Select points by index nodes. More...
pointcloud::QueryFill | fill (const std::string &filter=std::string())
| Fill points. More...
pointcloud::QueryFill | fill (const pointcloud::GraphNode::ID &node, const std::string &filter=std::string())
| Fill points by index node. More...
pointcloud::QueryFill | fill (const std::vector< pointcloud::GraphNode::ID > &nodes, const std::string &filter=std::string())
| Fill points by index nodes. More...
pointcloud::QueryInvert | invert (const std::string &filter=std::string())
| Invert points. More...
pointcloud::QueryInvert | invert (const pointcloud::GraphNode::ID &node, const std::string &filter=std::string())
| Invert points by index node. More...
pointcloud::QueryInvert | invert (const std::vector< pointcloud::GraphNode::ID > &nodes, const std::string &filter=std::string())
| Invert points by index nodes. More...
pointcloud::QueryRemove | remove ()
| Remove points. More...
pointcloud::QueryStat | stat ()
| Query point statistics. More...

## Friends
class | riegl::rdb::pointcloud::PointAttributes

## Detailed Description

Main point cloud database class.

Use this class to create or open a point cloud database and insert, update or query points.

Note
  All functions of this class throw an Exception of class riegl::rdb::Error in case of troubles.

Examples:
  rdb-example-01-create-database.cpp, rdb-example-02-insert-points.cpp, rdb-example-03-select-points.cpp, rdb-example-04-update-points.cpp, rdb-example-05-remove-points.cpp, rdb-example-06-database-stat.cpp, rdb-example-07-fill-points.cpp, rdb-example-08-invert-points.cpp, rdb-example-09-cleanup-database.cpp, and rdb-example-10-attribute-groups.cpp.

Definition at line 89 of file pointcloud.hpp.

## Constructor & Destructor Documentation

riegl::rdb::Pointcloud::Pointcloud | ( | Context | context = `Context()` | ) |
| explicit

Create Pointcloud instance.

This creates a new Pointcloud object instance. To actually access or create a point cloud database file, you must call open() or create().

Each Pointcloud instance may only be accessed from one thread/process at a time. Opening the same database using different Pointcloud instances (in the same or different thread or process) is allowed.

Note
  The implicit copy-constructor and assignment-operators will yield to multiple instances pointing to the same database file. This is okay, as long as you do not intend to use both instances in different threads simultaneously.

See Also
  Pointcloud::create()
  Pointcloud::open()

riegl::rdb::Pointcloud::~Pointcloud | ( |  | ) |

Destroy Pointcloud instance.

Note
  If there are multiple Pointcloud instances pointing to the same file (see constructor notes), then the database file will be closed when the last Pointcloud instance is deleted.

## Member Function Documentation

pointcloud::Changelog& riegl::rdb::Pointcloud::changelog | ( |  | ) |

Manage point cloud changelog.

See Also
  riegl::rdb::pointcloud::Changelog

const pointcloud::Changelog& riegl::rdb::Pointcloud::changelog | ( |  | ) | const

Manage point cloud changelog.

See Also
  riegl::rdb::pointcloud::Changelog

void riegl::rdb::Pointcloud::clearCache | ( |  | ) |

Clear internal data cache.

This function clears (flushes) the internal data cache and reduces memory consumption as much as possible.

void riegl::rdb::Pointcloud::close | ( |  | ) |

Close database.

Close database file and release all internal resources. This function fails if there are pending transactions.

Note
  Keep in mind to close all queries before you close or delete the database instance!

void riegl::rdb::Pointcloud::create | ( | const std::string & | location,
|  | const pointcloud::CreateSettings & | settings
| ) |  |

Create new database.

This function creates a new (empty) database. If the given database already exists, it will be overwritten (unless it is opened by other clients, in which case the creation will fail). The target folder must exist - it is not created automatically. If the database could not be created, an exception is thrown.

Parameters

  [in] | location | database location (filename)
  [in] | settings | database creation settings

Examples:
  rdb-example-01-create-database.cpp.

void riegl::rdb::Pointcloud::create | ( | const std::string & | location,
|  | const pointcloud::CreateSettings & | settings,
|  | const std::string & | schema,
|  | const bool | optionals = `false`
| ) |  |

Create new database.

Create new database. This function creates a new (empty) database. If the given database already exists, it will be overwritten (unless it is opened by other clients, in which case the creation will fail). The target folder must exist - it is not created automatically. If the database could not be created, an exception is thrown.

Additionally, all required point attributes and metadata entries as defined by the schema are added to the database. The schema is given in JSON format, details see riegl::rdb::pointcloud::Management::validate(). If 'optionals' is 'true', then also the optional point attributes and metadata entries are added to the database.

Note
  Only RIEGL default point attributes and metadata entries are supported. Metadata entries are added but have no value (empty string).
  If the schema defines a primary point attribute, then it overrides the primary point attribute defined in the 'settings' parameter.

See Also
  riegl::rdb::pointcloud::Management::validate()

Parameters

  [in] | location | database location (filename)
  [in] | settings | database creation settings
  [in] | schema | database schema (JSON format)
  [in] | optionals | true: include optional items

pointcloud::QueryFill riegl::rdb::Pointcloud::fill | ( | const std::string & | filter = `std::string()` | ) |

Fill points.

This function creates a new query object that can be used to set (modify) attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryFill

Parameters

  [in] | filter | optional point filter expression

Examples:
  rdb-example-07-fill-points.cpp.

pointcloud::QueryFill riegl::rdb::Pointcloud::fill | ( | const pointcloud::GraphNode::ID & | node,
|  | const std::string & | filter = `std::string()`
| ) |  |

Fill points by index node.

This function creates a new query object that can be used to set (modify) attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryFill

Instead of modifying all points of the point cloud this variant just modifies the points contained in a single node. See notes about LOD for details.

Parameters

  [in] | node | ID of index graph node
  [in] | filter | optional point filter expression

pointcloud::QueryFill riegl::rdb::Pointcloud::fill | ( | const std::vector< pointcloud::GraphNode::ID > & | nodes,
|  | const std::string & | filter = `std::string()`
| ) |  |

Fill points by index nodes.

This function creates a new query object that can be used to set (modify) attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryFill

Instead of modifying all points of the point cloud this variant just modifies the points contained in the given nodes. See notes about LOD for details.

Parameters

  [in] | nodes | IDs of index graph nodes
  [in] | filter | optional point filter expression

std::string riegl::rdb::Pointcloud::getUUID | ( |  | ) | const

Get database file's UUID.

Returns
  the Universally Unique Identifier of the database file

Note
  Database files created with rdblib prior version 2.1.2 do not have a UUID. In this case the "nil" UUID is returned. If no database is opened, an empty string is returned.

pointcloud::QueryInsert riegl::rdb::Pointcloud::insert | ( |  | ) |

Insert points.

This function creates a new query object that can be used to insert (new) points into the database.

See Also
  riegl::rdb::pointcloud::QueryInsert

Examples:
  rdb-example-02-insert-points.cpp.

std::string riegl::rdb::Pointcloud::inspect | ( | const std::uint8_t | format | ) |

File statistics and debugging information.

This function returns statistics and debugging information about the database file which is intended for factory usage only (i.e. the format may change at any time and the content is undocumented).

pointcloud::QueryInvert riegl::rdb::Pointcloud::invert | ( | const std::string & | filter = `std::string()` | ) |

Invert points.

This function creates a new query object that can be used to invert attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryInvert

Parameters

  [in] | filter | optional point filter expression

Examples:
  rdb-example-08-invert-points.cpp.

pointcloud::QueryInvert riegl::rdb::Pointcloud::invert | ( | const pointcloud::GraphNode::ID & | node,
|  | const std::string & | filter = `std::string()`
| ) |  |

Invert points by index node.

This function creates a new query object that can be used to invert attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryInvert

Instead of inverting all points of the point cloud this variant just inverts the points contained in a single node. See notes about LOD for details.

Parameters

  [in] | node | ID of index graph node
  [in] | filter | optional point filter expression

pointcloud::QueryInvert riegl::rdb::Pointcloud::invert | ( | const std::vector< pointcloud::GraphNode::ID > & | nodes,
|  | const std::string & | filter = `std::string()`
| ) |  |

Invert points by index nodes.

This function creates a new query object that can be used to invert attributes of existing points.

Please have a look at select() for details about the filter expression.

See Also
  riegl::rdb::pointcloud::QueryInvert

Instead of inverting all points of the point cloud this variant just inverts the points contained in the given nodes. See notes about LOD for details.

Parameters

  [in] | nodes | IDs of index graph nodes
  [in] | filter | optional point filter expression

bool riegl::rdb::Pointcloud::isEmpty | ( |  | ) | const

Check if a database is empty.

Returns
  true if the database contains no points or no database is open

bool riegl::rdb::Pointcloud::isOpen | ( |  | ) | const

Check if a database is open.

Returns
  true if a database is open

pointcloud::Management& riegl::rdb::Pointcloud::management | ( |  | ) |

Basic point cloud management interface.

See Also
  riegl::rdb::pointcloud::Management

Examples:
  rdb-example-09-cleanup-database.cpp.

const pointcloud::Management& riegl::rdb::Pointcloud::management | ( |  | ) | const

Basic point cloud management interface.

See Also
  riegl::rdb::pointcloud::Management

pointcloud::MetaData& riegl::rdb::Pointcloud::metaData | ( |  | ) |

Manage point cloud meta data.

See Also
  riegl::rdb::pointcloud::MetaData

const pointcloud::MetaData& riegl::rdb::Pointcloud::metaData | ( |  | ) | const

Manage point cloud meta data.

See Also
  riegl::rdb::pointcloud::MetaData

void riegl::rdb::Pointcloud::open | ( | const std::string & | location,
|  | const pointcloud::OpenSettings & | settings
| ) |  |

Open existing database.

Open existing database location. If the given database does not exist, an exception is thrown.

Parameters

  [in] | location | database location (filename)
  [in] | settings | database open settings

Examples:
  rdb-example-02-insert-points.cpp, rdb-example-03-select-points.cpp, rdb-example-04-update-points.cpp, rdb-example-05-remove-points.cpp, rdb-example-06-database-stat.cpp, rdb-example-07-fill-points.cpp, rdb-example-08-invert-points.cpp, rdb-example-09-cleanup-database.cpp, and rdb-example-10-attribute-groups.cpp.

pointcloud::PointAttributes& riegl::rdb::Pointcloud::pointAttribute | ( |  | ) |

Manage point attributes.

See Also
  riegl::rdb::pointcloud::PointAttributes

Examples:
  rdb-example-01-create-database.cpp, rdb-example-02-insert-points.cpp, rdb-example-06-database-stat.cpp, rdb-example-08-invert-points.cpp, and rdb-example-10-attribute-groups.cpp.

const pointcloud::PointAttributes& riegl::rdb::Pointcloud::pointAttribute | ( |  | ) | const

Manage point attributes.

See Also
  riegl::rdb::pointcloud::PointAttributes

pointcloud::QueryRemove riegl::rdb::Pointcloud::remove | ( |  | ) |

Remove points.

This function creates a new query object that can be used to remove (delete) existing points.

See Also
  riegl::rdb::pointcloud::QueryRemove

Examples:
  rdb-example-05-remove-points.cpp.

pointcloud::QuerySelect riegl::rdb::Pointcloud::select | ( | const std::string & | filter = `std::string()` | ) |

Select points.

This function creates a new query object that can be used to select (read) attributes of existing points.
The optional filter expression can be used to select particular points - if no filter is given, all points will be loaded.

Filter expression operators:

operator | meaning
--- | ---
== | equality (left == right)
!= | inequality (left != right)
< | less than (left < right)
<= | less than or equal to (left <= right)
> | greater than (left > right)
>= | greater than or equal to (left >= right)
&& | conjunction (left && right)
|| | disjunction (left || right)
% | unsigned modulo (left % right)

Filter expression syntax:

- constant = integer | double | variable > ':' > ('minimum' | 'maximum' | 'default' | 'invalid')
- variable = [a-zA-Z] > ([0-9a-zA-Z] | '_' | '.')*
- operand = constant | variable | expression
- expression = (operand)? > operator > operand

Filter expression examples:

- "" (empty string means "all points")
- "amplitude > 5.0"
- "(reflectance > 0.0) && (selected == 1)"
- "point_count != point_count:invalid"
- "(id % 2) == 0"

Stored filters:

Filters can also be stored in the metadata as `riegl.stored_filters`. All activated filters of this list will be applied in addition to the filter specified by the application (conjunction). To temporarily ignore (override) all stored filters, insert `"!!"` at the beginning or end of the filter string (e.g. `"!! riegl.id == 1"` or `"riegl.id == 1 !!"`).

Note
  The resolution of a point attribute is used as a tolerance when comparing attribute values with constants (i.e. constants are rounded to the nearest multiple of the attribute resolution before comparison).

See Also
  riegl::rdb::pointcloud::QuerySelect

Parameters

  [in] | filter | optional point filter expression

Examples:
  rdb-example-03-select-points.cpp, rdb-example-04-update-points.cpp, and rdb-example-05-remove-points.cpp.

pointcloud::QuerySelect riegl::rdb::Pointcloud::select | ( | const pointcloud::GraphNode::ID & | node,
|  | const std::string & | filter = `std::string()`
| ) |  |

Select points by index node.

This function creates a new query object that can be used to select (read) attributes of existing points.
The optional filter expression can be used to select particular points - if no filter is given, all points will be loaded.

Filter expression operators:

operator | meaning
--- | ---
== | equality (left == right)
!= | inequality (left != right)
< | less than (left < right)
<= | less than or equal to (left <= right)
> | greater than (left > right)
>= | greater than or equal to (left >= right)
&& | conjunction (left && right)
|| | disjunction (left || right)
% | unsigned modulo (left % right)

Filter expression syntax:

- constant = integer | double | variable > ':' > ('minimum' | 'maximum' | 'default' | 'invalid')
- variable = [a-zA-Z] > ([0-9a-zA-Z] | '_' | '.')*
- operand = constant | variable | expression
- expression = (operand)? > operator > operand

Filter expression examples:

- "" (empty string means "all points")
- "amplitude > 5.0"
- "(reflectance > 0.0) && (selected == 1)"
- "point_count != point_count:invalid"
- "(id % 2) == 0"

Stored filters:

Filters can also be stored in the metadata as `riegl.stored_filters`. All activated filters of this list will be applied in addition to the filter specified by the application (conjunction). To temporarily ignore (override) all stored filters, insert `"!!"` at the beginning or end of the filter string (e.g. `"!! riegl.id == 1"` or `"riegl.id == 1 !!"`).

Note
  The resolution of a point attribute is used as a tolerance when comparing attribute values with constants (i.e. constants are rounded to the nearest multiple of the attribute resolution before comparison).

See Also
  riegl::rdb::pointcloud::QuerySelect

Instead of loading all points of the point cloud this variant just loads the points contained in a single node. See notes about LOD for details.

Parameters

  [in] | node | ID of index graph node
  [in] | filter | optional point filter expression

pointcloud::QuerySelect riegl::rdb::Pointcloud::select | ( | const std::vector< pointcloud::GraphNode::ID > & | nodes,
|  | const std::string & | filter = `std::string()`
| ) |  |

Select points by index nodes.

This function creates a new query object that can be used to select (read) attributes of existing points.
The optional filter expression can be used to select particular points - if no filter is given, all points will be loaded.

Filter expression operators:

operator | meaning
--- | ---
== | equality (left == right)
!= | inequality (left != right)
< | less than (left < right)
<= | less than or equal to (left <= right)
> | greater than (left > right)
>= | greater than or equal to (left >= right)
&& | conjunction (left && right)
|| | disjunction (left || right)
% | unsigned modulo (left % right)

Filter expression syntax:

- constant = integer | double | variable > ':' > ('minimum' | 'maximum' | 'default' | 'invalid')
- variable = [a-zA-Z] > ([0-9a-zA-Z] | '_' | '.')*
- operand = constant | variable | expression
- expression = (operand)? > operator > operand

Filter expression examples:

- "" (empty string means "all points")
- "amplitude > 5.0"
- "(reflectance > 0.0) && (selected == 1)"
- "point_count != point_count:invalid"
- "(id % 2) == 0"

Stored filters:

Filters can also be stored in the metadata as `riegl.stored_filters`. All activated filters of this list will be applied in addition to the filter specified by the application (conjunction). To temporarily ignore (override) all stored filters, insert `"!!"` at the beginning or end of the filter string (e.g. `"!! riegl.id == 1"` or `"riegl.id == 1 !!"`).

Note
  The resolution of a point attribute is used as a tolerance when comparing attribute values with constants (i.e. constants are rounded to the nearest multiple of the attribute resolution before comparison).

See Also
  riegl::rdb::pointcloud::QuerySelect

Instead of loading all points of the point cloud this variant just loads the points contained in the given nodes. See notes about LOD for details.

Parameters

  [in] | nodes | IDs of index graph nodes
  [in] | filter | optional point filter expression

pointcloud::QueryStat riegl::rdb::Pointcloud::stat | ( |  | ) |

Query point statistics.

This function creates a new query object that can be used to get point attribute statistics like minimum and maximum value.

See Also
  riegl::rdb::pointcloud::QueryStat

Examples:
  rdb-example-06-database-stat.cpp.

pointcloud::Transactions& riegl::rdb::Pointcloud::transaction | ( |  | ) |

Manage point cloud transactions.

See Also
  riegl::rdb::pointcloud::Transactions

const pointcloud::Transactions& riegl::rdb::Pointcloud::transaction | ( |  | ) | const

Manage point cloud transactions.

See Also
  riegl::rdb::pointcloud::Transactions

pointcloud::QueryUpdate riegl::rdb::Pointcloud::update | ( |  | ) |

Update points.

This function creates a new query object that can be used to update (modify) attributes of existing points.

See Also
  riegl::rdb::pointcloud::QueryUpdate

Examples:
  rdb-example-04-update-points.cpp.

## Friends And Related Function Documentation

friend class riegl::rdb::pointcloud::PointAttributes
| friend

Definition at line 482 of file pointcloud.hpp.

The documentation for this class was generated from the following file:

- riegl/rdb/pointcloud.hpp