KeysToJointsPlugin Class Reference

Control joints in a model based on keypress messages received. More...

#include <KeysToJointsPlugin.hh>

Inherits ModelPlugin.

Public Types

typedef boost::shared_ptr
< ModelPlugin
TPtr
 plugin pointer type definition More...
 

Public Member Functions

 KeysToJointsPlugin ()
 Constructor. More...
 
 ~KeysToJointsPlugin ()
 Destructor. More...
 
std::string GetFilename () const
 Get the name of the handler. More...
 
std::string GetHandle () const
 Get the short name of the handler. More...
 
PluginType GetType () const
 Returns the type of the plugin. More...
 
virtual void Init ()
 Override this method for custom plugin initialization behavior. More...
 
virtual void Load (physics::ModelPtr _model, sdf::ElementPtr _sdf)
 Load function. More...
 
virtual void Reset ()
 Override this method for custom plugin reset behavior. More...
 

Static Public Member Functions

static TPtr Create (const std::string &_filename, const std::string &_name)
 a class method that creates a plugin from a file name. More...
 

Protected Attributes

std::string filename
 Path to the shared library file. More...
 
std::string handleName
 Short name. More...
 
PluginType type
 Type of plugin. More...
 

Detailed Description

Control joints in a model based on keypress messages received.

The plugin accepts multiple <map> elements:

<map key="" joint="" type="" scale="" kp="" ki="" kd="">

Where:

  • key: Key ASCII value (reference: http://ascii.cl/)
  • joint: Joint name
  • type: Available types: position, velocity, force.
  • scale: Slightly different according to type:
    • position: scale is by how much the target position will increase or decrease for each key press.
    • velocity: The velocity target. This is not increased at each keypress.
    • force: The force to apply to the joint each time the key is pressed.

Examples:

  1. Decrease joint "revolute_joint_name"'s angle by 0.1 rad at every click on the "i" key:

<map key="105" joint="revolute_joint_name" scale="-0.1" type="position" kp="1000" ki="0" kd="10">

  1. Set joint "revolute_joint_name"'s angular velocity to 0.1 rad/s at every click on the "6" key:

<map key="54" joint="revolute_joint_name" scale="0.1" type="velocity" kp="200" ki="0" kd="0">

  1. Apply -1000 N to joint "prismatic_joint_name" at every click on the "u" key:

<map key="117" joint="prismatic_joint_name" scale="-1000" type="force">

  1. Check the example world "simple_arm_teleop.world" for a demo.

Member Typedef Documentation

typedef boost::shared_ptr<ModelPlugin > TPtr
inherited

plugin pointer type definition

Constructor & Destructor Documentation

Constructor.

Destructor.

Member Function Documentation

static TPtr Create ( const std::string &  _filename,
const std::string &  _name 
)
inlinestaticinherited

a class method that creates a plugin from a file name.

It locates the shared library and loads it dynamically.

Parameters
[in]_filenamethe path to the shared library.
[in]_nameshort name of the plugin
Returns
Shared Pointer to this class type

References PluginT< T >::filename, gzerr, and SingletonT< SystemPaths >::Instance().

std::string GetFilename ( ) const
inlineinherited

Get the name of the handler.

References PluginT< T >::filename.

std::string GetHandle ( ) const
inlineinherited

Get the short name of the handler.

References PluginT< T >::handleName.

PluginType GetType ( ) const
inlineinherited

Returns the type of the plugin.

Returns
type of the plugin

References PluginT< T >::type.

virtual void Init ( )
inlinevirtualinherited
virtual void Load ( physics::ModelPtr  _model,
sdf::ElementPtr  _sdf 
)
virtual

Load function.

Called when a Plugin is first created, and after the World has been loaded. This function should not be blocking.

Parameters
[in]_modelPointer to the Model
[in]_sdfPointer to the SDF element of the plugin.

Implements ModelPlugin.

virtual void Reset ( )
inlinevirtualinherited

Override this method for custom plugin reset behavior.

Reimplemented in RandomVelocityPlugin, ElevatorPlugin, FollowerPlugin, LinearBatteryPlugin, InitialVelocityPlugin, and SphereAtlasDemoPlugin.

Member Data Documentation

std::string filename
protectedinherited

Path to the shared library file.

std::string handleName
protectedinherited

Short name.

PluginType type
protectedinherited

Type of plugin.

Referenced by ModelPlugin::ModelPlugin().


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