Panda3D
Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes

VrpnClient Class Reference

A specific ClientBase that connects to a VRPN server and records information on the connected VRPN devices. More...

#include "vrpnClient.h"

Inheritance diagram for VrpnClient:
ClientBase TypedReferenceCount TypedObject ReferenceCount MemoryBase MemoryBase

List of all members.

Public Member Functions

 VrpnClient (const string &server_name)
TypedObjectas_typed_object ()
 Returns the object, upcast (if necessary) to a TypedObject pointer.
const TypedObjectas_typed_object () const
 Returns the object, upcast (if necessary) to a TypedObject pointer.
virtual TypeHandle force_init_type ()
bool fork_asynchronous_thread (double poll_time)
 Forks a separate thread to do all the polling of connected devices.
int get_best_parent_from_Set (const std::set< int > &) const
CoordinateSystem get_coordinate_system () const
 Returns the coordinate system that all devices associated with this client will operate in.
double get_last_poll_time () const
 Returns the time (according to the global ClockObject's get_real_time() method) of the last device poll.
int get_ref_count () const
 Returns the current reference count.
const string & get_server_name () const
 Returns the name of the server as passed to the VrpnClient constructor.
virtual TypeHandle get_type () const
int get_type_index () const
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
WeakReferenceListget_weak_list () const
 Returns the WeakReferenceList associated with this ReferenceCount object.
bool has_weak_list () const
 Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise.
bool is_connected () const
 Returns true if the connection is established succesfully, false otherwise.
bool is_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly.
bool is_forked () const
 Returns true if the ClientBase has been forked (and, therefore, poll() does not need to be called), false otherwise.
bool is_of_type (TypeHandle handle) const
 Returns true if the current object is or derives from the indicated type.
bool is_valid () const
 Returns true if everything seems to be kosher with the server (even if there is no connection), or false otherwise.
void local_object ()
 This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack.
void operator delete (void *ptr)
void operator delete (void *ptr, void *)
void operator delete (void *ptr)
void operator delete (void *ptr, void *)
void operator delete[] (void *ptr)
void operator delete[] (void *, void *)
void operator delete[] (void *, void *)
void operator delete[] (void *ptr)
void * operator new (size_t size, void *ptr)
void * operator new (size_t size)
void * operator new (size_t size, void *ptr)
void * operator new (size_t size)
void * operator new[] (size_t size, void *ptr)
void * operator new[] (size_t size)
void * operator new[] (size_t size)
void * operator new[] (size_t size, void *ptr)
bool poll ()
 Initiates a poll of the client devices, if we are not forked and if we have not already polled this frame.
void ref () const
 Explicitly increments the reference count.
void set_coordinate_system (CoordinateSystem cs)
 Specifies the coordinate system that all devices associated with this client will operate in.
bool test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus.
bool test_ref_count_nonzero () const
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
virtual bool unref () const
 Explicitly decrements the reference count.
void weak_ref (WeakPointerToVoid *ptv)
 Adds the indicated PointerToVoid as a weak reference to this object.
void weak_unref (WeakPointerToVoid *ptv)
 Removes the indicated PointerToVoid as a weak reference to this object.
void write (ostream &out, int indent_level=0) const
 Writes a list of the active devices that the VrpnClient is currently polling each frame.

Static Public Member Functions

static double convert_to_secs (struct timeval msg_time)
 Little inline function to convert a struct timeval to only seconds.
static TypeHandle get_class_type ()
static void init_type ()
 This function is declared non-inline to work around a compiler bug in g++ 2.96.

Protected Member Functions

virtual bool disconnect_device (TypeHandle device_type, const string &device_name, ClientDevice *device)
 Removes the device, which is presumably about to destruct, from the list of connected devices, and frees any data required to support it.
virtual void do_poll ()
 Implements the polling and updating of connected devices, if the ClientBase requires this.
bool do_test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus.
bool do_test_ref_count_nonzero () const
 Returns true if the reference count is nonzero, false otherwise.
virtual PT (ClientDevice) make_device(TypeHandle device_type

Protected Attributes

virtual const string & device_name

Detailed Description

A specific ClientBase that connects to a VRPN server and records information on the connected VRPN devices.

Definition at line 38 of file vrpnClient.h.


Member Function Documentation

TypedObject * TypedObject::as_typed_object ( ) [inline, inherited]

Returns the object, upcast (if necessary) to a TypedObject pointer.

Definition at line 99 of file typedObject.I.

const TypedObject * TypedObject::as_typed_object ( ) const [inline, inherited]

Returns the object, upcast (if necessary) to a TypedObject pointer.

Definition at line 110 of file typedObject.I.

double VrpnClient::convert_to_secs ( struct timeval  msg_time) [inline, static]

Little inline function to convert a struct timeval to only seconds.

Definition at line 59 of file vrpnClient.I.

bool VrpnClient::disconnect_device ( TypeHandle  device_type,
const string &  device_name,
ClientDevice device 
) [protected, virtual]

Removes the device, which is presumably about to destruct, from the list of connected devices, and frees any data required to support it.

This device will no longer receive automatic updates with each poll.

The return value is true if the device was disconnected, or false if it was unknown (e.g. it was disconnected previously).

Reimplemented from ClientBase.

Definition at line 172 of file vrpnClient.cxx.

References ClientBase::disconnect_device(), and TypedObject::is_of_type().

void VrpnClient::do_poll ( ) [protected, virtual]

Implements the polling and updating of connected devices, if the ClientBase requires this.

This may be called in a sub-thread if fork_asynchronous_thread() was called; otherwise, it will be called once per frame.

Reimplemented from ClientBase.

Definition at line 209 of file vrpnClient.cxx.

References VrpnDial::poll(), VrpnAnalog::poll(), VrpnButton::poll(), and VrpnTracker::poll().

bool ReferenceCount::do_test_ref_count_integrity ( ) const [protected, inherited]

Does some easy checks to make sure that the reference count isn't completely bogus.

Returns true if ok, false otherwise.

Reimplemented in NodeReferenceCount, CachedTypedWritableReferenceCount, and NodeCachedReferenceCount.

Definition at line 29 of file referenceCount.cxx.

Referenced by ReferenceCount::do_test_ref_count_nonzero(), and ReferenceCount::test_ref_count_integrity().

bool ReferenceCount::do_test_ref_count_nonzero ( ) const [protected, inherited]

Returns true if the reference count is nonzero, false otherwise.

Definition at line 56 of file referenceCount.cxx.

References ReferenceCount::do_test_ref_count_integrity().

Referenced by ReferenceCount::test_ref_count_nonzero().

bool ClientBase::fork_asynchronous_thread ( double  poll_time) [inherited]

Forks a separate thread to do all the polling of connected devices.

The forked thread will poll after every poll_time seconds has elapsed. Returns true if the fork was successful, or false otherwise (for instance, because we were already forked, or because asynchronous threads are disabled).

Definition at line 82 of file clientBase.cxx.

CoordinateSystem ClientBase::get_coordinate_system ( ) const [inline, inherited]

Returns the coordinate system that all devices associated with this client will operate in.

Normally, this is CS_default.

Definition at line 80 of file clientBase.I.

double ClientBase::get_last_poll_time ( ) const [inline, inherited]

Returns the time (according to the global ClockObject's get_real_time() method) of the last device poll.

Definition at line 56 of file clientBase.I.

int ReferenceCount::get_ref_count ( ) const [inline, inherited]
const string & VrpnClient::get_server_name ( ) const [inline]

Returns the name of the server as passed to the VrpnClient constructor.

Definition at line 24 of file vrpnClient.I.

int TypedObject::get_type_index ( ) const [inline, inherited]

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

Definition at line 52 of file typedObject.I.

References TypeHandle::get_index().

WeakReferenceList * ReferenceCount::get_weak_list ( ) const [inline, inherited]

Returns the WeakReferenceList associated with this ReferenceCount object.

If there has never been a WeakReferenceList associated with this object, creates one now.

Definition at line 307 of file referenceCount.I.

Referenced by ReferenceCount::weak_ref().

bool ReferenceCount::has_weak_list ( ) const [inline, inherited]

Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise.

In general, this will be true if there was ever a WeakPointerTo created for this object (even if there is not any for it now).

Definition at line 294 of file referenceCount.I.

Referenced by ReferenceCount::weak_unref().

static void VrpnClient::init_type ( ) [inline, static]

This function is declared non-inline to work around a compiler bug in g++ 2.96.

Making it inline seems to cause problems in the optimizer.

Reimplemented from ClientBase.

Definition at line 103 of file vrpnClient.h.

References ClientBase::init_type().

bool VrpnClient::is_connected ( ) const [inline]

Returns true if the connection is established succesfully, false otherwise.

Definition at line 47 of file vrpnClient.I.

Referenced by write().

bool TypedObject::is_exact_type ( TypeHandle  handle) const [inline, inherited]
bool ClientBase::is_forked ( ) const [inline, inherited]

Returns true if the ClientBase has been forked (and, therefore, poll() does not need to be called), false otherwise.

Definition at line 25 of file clientBase.I.

bool TypedObject::is_of_type ( TypeHandle  handle) const [inline, inherited]

Returns true if the current object is or derives from the indicated type.

Definition at line 63 of file typedObject.I.

References TypeHandle::is_derived_from().

Referenced by EggSliderData::add_back_pointer(), EggJointData::add_back_pointer(), CIntervalManager::add_c_interval(), XFileNode::add_child(), CollisionTraverser::add_collider(), CollisionHandlerPhysical::add_collider(), EggXfmSAnim::add_data(), CharacterJointBundle::add_node(), NonlinearImager::add_screen(), EggGroupNode::apply_first_attribute(), EggGroupNode::apply_last_attribute(), DeferredNodeProperty::apply_to_node(), RecorderController::begin_playback(), NodePath::clear_clip_plane(), EggGroupNode::clear_connected_shading(), NodePath::clear_light(), EggBase::convert_paths(), NodePath::decode_from_bam_stream(), disconnect_device(), PhysicsManager::do_physics(), GraphicsStateGuardian::fetch_specified_part(), EggRenderState::fill_state(), AnimBundleNode::find_anim_bundle(), EggGroupNode::find_coordsys_entry(), XFile::find_data_object(), Character::find_joint(), EggGroupNode::find_materials(), Character::find_slider(), XFile::find_template(), EggGroupNode::find_textures(), EggMaterialCollection::find_used_materials(), EggTextureCollection::find_used_textures(), EggGroupNode::force_filenames(), EggJointData::force_initial_rest_frame(), WindowFramework::get_aspect_2d(), EggPoolUniquifier::get_category(), EggGroupUniquifier::get_category(), EggGroupNode::get_connected_shading(), PandaFramework::get_mouse(), FactoryParams::get_param_of_type(), EggGroupNode::has_absolute_pathnames(), NodePath::has_clip_plane(), NodePath::has_clip_plane_off(), NodePath::has_light(), PandaFramework::hide_collision_solids(), x11GraphicsWindow::open_window(), eglGraphicsWindow::open_window(), EggNode::parse_egg(), CharacterMaker::part_to_node(), EggGroupNode::post_apply_flat_attribute(), EggBinner::prepare_node(), PortalClipper::prepare_portal(), NodePath::project_texture(), EggMatrixTablePointer::quantize_channels(), ParametricCurveCollection::r_add_curves(), SceneGraphReducer::r_collect_vertex_data(), EggGroupNode::r_load_externals(), EggGroupNode::rebuild_vertex_pools(), EggGroupNode::recompute_polygon_normals(), EggGroupNode::remove_invalid_primitives(), EggGroupNode::remove_unused_vertices(), EggLoader::reparent_decals(), EggMaterialCollection::replace_materials(), EggTextureCollection::replace_textures(), EggGroupNode::resolve_filenames(), EggGroupNode::reverse_vertex_ordering(), NodePath::set_clip_plane(), NodePath::set_clip_plane_off(), NodePath::set_light(), ProjectionScreen::set_projector(), NonlinearImager::set_source_camera(), EggXfmSAnim::set_value(), NonlinearImager::set_viewer_camera(), PandaFramework::show_collision_solids(), BamCache::store(), XFileToEggConverter::strip_nodes(), EggGroupNode::strip_normals(), DataGraphTraverser::traverse(), DataGraphTraverser::traverse_below(), EggGroupNode::triangulate_polygons(), EggGroupNode::unify_attributes(), EggNameUniquifier::uniquify(), NodeCullCallbackData::upcall(), PhysicsCollisionHandler::validate_target(), EggXfmSAnim::write(), EggGroup::write(), EggToDXFLayer::write_3d_face(), and EggToDXFLayer::write_entities().

bool VrpnClient::is_valid ( ) const [inline]

Returns true if everything seems to be kosher with the server (even if there is no connection), or false otherwise.

Definition at line 36 of file vrpnClient.I.

Referenced by write().

void ReferenceCount::local_object ( ) [inline, inherited]

This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack.

This allows the object to be passed to functions that will increment and decrement the object's reference count temporarily, and it will prevent the object from being deleted (inappropriately), when the reference count returns to zero. It actually achieves this by setting a large positive value in the reference count field.

Definition at line 276 of file referenceCount.I.

Referenced by PGTop::cull_callback(), BoundingSphere::extend_by_hexahedron(), AsyncTaskManager::find_task(), AsyncTaskManager::find_tasks(), and AsyncTaskManager::find_tasks_matching().

bool ClientBase::poll ( ) [inline, inherited]

Initiates a poll of the client devices, if we are not forked and if we have not already polled this frame.

Returns true if the poll occurred, or false if it did not.

Definition at line 38 of file clientBase.I.

References ClientBase::do_poll(), and ClockObject::get_global_clock().

Referenced by ClientDevice::poll().

void ReferenceCount::ref ( ) const [inline, inherited]

Explicitly increments the reference count.

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

Definition at line 179 of file referenceCount.I.

References ReferenceCount::test_ref_count_integrity().

Referenced by CachedTypedWritableReferenceCount::cache_ref(), TypedWritable::decode_raw_from_bam_stream(), NodeCachedReferenceCount::node_ref(), NodeReferenceCount::node_ref(), BamCacheRecord::set_data(), CullableObject::set_draw_callback(), and ModelRoot::set_reference().

void ClientBase::set_coordinate_system ( CoordinateSystem  cs) [inline, inherited]

Specifies the coordinate system that all devices associated with this client will operate in.

Normally, this is CS_default.

Definition at line 68 of file clientBase.I.

bool ReferenceCount::test_ref_count_integrity ( ) const [inline, inherited]
bool ReferenceCount::test_ref_count_nonzero ( ) const [inline, inherited]

Does some easy checks to make sure that the reference count isn't zero, or completely bogus.

Returns true if ok, false otherwise.

Definition at line 252 of file referenceCount.I.

References ReferenceCount::do_test_ref_count_nonzero().

Referenced by CopyOnWritePointer::test_ref_count_nonzero().

bool ReferenceCount::unref ( ) const [inline, virtual, inherited]

Explicitly decrements the reference count.

Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic.) However, see the helper function unref_delete().

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is true if the new reference count is nonzero, false if it is zero.

Reimplemented in GeomVertexArrayFormat, GeomVertexFormat, InternalName, RenderAttrib, RenderEffects, RenderState, and TransformState.

Definition at line 214 of file referenceCount.I.

References ReferenceCount::test_ref_count_integrity().

Referenced by CachedTypedWritableReferenceCount::cache_unref(), TypedWritable::decode_raw_from_bam_stream(), RenderEffect::finalize(), NodeCachedReferenceCount::node_unref(), NodeReferenceCount::node_unref(), TransformState::unref(), RenderState::unref(), RenderEffects::unref(), RenderAttrib::unref(), InternalName::unref(), GeomVertexFormat::unref(), and GeomVertexArrayFormat::unref().

void ReferenceCount::weak_ref ( WeakPointerToVoid ptv) [inline, inherited]

Adds the indicated PointerToVoid as a weak reference to this object.

Definition at line 321 of file referenceCount.I.

References WeakReferenceList::add_reference(), and ReferenceCount::get_weak_list().

void ReferenceCount::weak_unref ( WeakPointerToVoid ptv) [inline, inherited]

Removes the indicated PointerToVoid as a weak reference to this object.

It must have previously been added via a call to weak_ref().

Definition at line 334 of file referenceCount.I.

References WeakReferenceList::clear_reference(), and ReferenceCount::has_weak_list().

void VrpnClient::write ( ostream &  out,
int  indent_level = 0 
) const

Writes a list of the active devices that the VrpnClient is currently polling each frame.

Definition at line 73 of file vrpnClient.cxx.

References is_connected(), and is_valid().


The documentation for this class was generated from the following files:
 All Classes Functions Variables Enumerations