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Physical Class Reference

Defines a set of physically modeled attributes. More...

#include "physical.h"

Inheritance diagram for Physical:
TypedReferenceCount TypedObject ReferenceCount MemoryBase MemoryBase ParticleSystem

List of all members.

Public Types

typedef pvector< PT(AngularForce)> AngularForceVector
typedef pvector< PT(LinearForce)> LinearForceVector

Public Member Functions

 Physical (int total_objects=1, bool pre_alloc=false)
 Default Constructor.
 Physical (const Physical &copy)
 copy constructor (note- does deep copy of pn's) but does NOT attach itself to its template's physicsmanager.
virtual ~Physical ()
 destructor
void add_angular_force (AngularForce *f)
 Adds an angular force to the force list.
void add_linear_force (LinearForce *f)
 Adds a linear force to the force list.
void add_physics_object (PhysicsObject *po)
 Adds an object to the physics object vector.
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.
void clear_angular_forces ()
 Erases the angular force list.
void clear_linear_forces ()
 Erases the linear force list.
void clear_physics_objects ()
 Erases the object list.
virtual TypeHandle force_init_type ()
const AngularForceVector & get_angular_forces () const
int get_best_parent_from_Set (const std::set< int > &) const
const LinearForceVector & get_linear_forces () const
int get_num_angular_forces () const
int get_num_linear_forces () const
const PhysicsObject::Vector & get_object_vector () const
const PhysicsObjectCollection get_objects () const
PhysicsObjectget_phys_body () const
PhysicalNodeget_physical_node () const
NodePath get_physical_node_path () const
PhysicsManagerget_physics_manager () const
int get_ref_count () const
 Returns the current reference count.
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.
float get_viscosity () const
 Get the local viscosity.
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_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly.
bool is_of_type (TypeHandle handle) const
 Returns true if the current object is or derives from the indicated type.
void local_object ()
 This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack.
 MAKE_SEQ (get_linear_forces, get_num_linear_forces, get_linear_force)
 MAKE_SEQ (get_angular_forces, get_num_angular_forces, get_angular_force)
void operator delete (void *ptr)
void operator delete (void *ptr)
void operator delete (void *ptr, void *)
void operator delete (void *ptr, void *)
void operator delete[] (void *ptr)
void operator delete[] (void *ptr)
void operator delete[] (void *, void *)
void operator delete[] (void *, void *)
void * operator new (size_t size)
void * operator new (size_t size)
void * operator new (size_t size, 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 *ptr)
void * operator new[] (size_t size)
virtual void output (ostream &out=cout) const
 Write a string representation of this instance to <out>.
 PT (LinearForce) get_linear_force(int index) const
 PT (AngularForce) get_angular_force(int index) const
void ref () const
 Explicitly increments the reference count.
void remove_angular_force (AngularForce *f)
 removes an angular force from the force list
void remove_linear_force (LinearForce *f)
 removes a linear force from the force list
void set_viscosity (float viscosity)
 Set the local viscosity.
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.
virtual void write (ostream &out=cout, unsigned int indent=0) const
 Write a string representation of this instance to <out>.
virtual void write_angular_forces (ostream &out=cout, unsigned int indent=0) const
 Write a string representation of this instance to <out>.
virtual void write_linear_forces (ostream &out=cout, unsigned int indent=0) const
 Write a string representation of this instance to <out>.
virtual void write_physics_objects (ostream &out=cout, unsigned int indent=0) const
 Write a string representation of this instance to <out>.

Static Public Member Functions

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

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.

Protected Attributes

AngularForceVector _angular_forces
LinearForceVector _linear_forces
PhysicsObject_phys_body
PhysicsObject::Vector _physics_objects
float _viscosity

Friends

class PhysicalNode
class PhysicsManager

Detailed Description

Defines a set of physically modeled attributes.

If you want physics applied to your class, derive it from this.

Definition at line 40 of file physical.h.


Constructor & Destructor Documentation

Physical::Physical ( int  total_objects = 1,
bool  pre_alloc = false 
)

Default Constructor.

The idea here is that most physicals will NOT be collections of sets (i.e. particle systems and whatever else). Because of this, the default constructor, unless otherwise specified, will automatically allocate and initialize one PhysicalObject. This makes it easier for high-level work.

pre-alloc is ONLY for multiple-object physicals, and if true, fills the physics_object vector with dead nodes, pre-allocating for the speed end of the speed-vs-overhead deal.

Definition at line 41 of file physical.cxx.

References add_physics_object().

Physical::Physical ( const Physical copy)

copy constructor (note- does deep copy of pn's) but does NOT attach itself to its template's physicsmanager.

Definition at line 69 of file physical.cxx.

Physical::~Physical ( ) [virtual]

destructor

Definition at line 109 of file physical.cxx.

References PhysicsManager::remove_physical().


Member Function Documentation

void Physical::add_angular_force ( AngularForce f) [inline]

Adds an angular force to the force list.

Definition at line 66 of file physical.I.

void Physical::add_linear_force ( LinearForce f) [inline]

Adds a linear force to the force list.

Definition at line 56 of file physical.I.

void Physical::add_physics_object ( PhysicsObject po) [inline]

Adds an object to the physics object vector.

Definition at line 114 of file physical.I.

Referenced by Physical().

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.

void Physical::clear_angular_forces ( ) [inline]

Erases the angular force list.

Definition at line 34 of file physical.I.

void Physical::clear_linear_forces ( ) [inline]

Erases the linear force list.

Definition at line 23 of file physical.I.

void Physical::clear_physics_objects ( ) [inline]

Erases the object list.

Definition at line 45 of file physical.I.

Referenced by ParticleSystem::ParticleSystem().

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().

int ReferenceCount::get_ref_count ( ) const [inline, inherited]
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().

float Physical::get_viscosity ( ) const [inline]

Get the local viscosity.

Definition at line 235 of file physical.I.

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 Physical::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 TypedReferenceCount.

Reimplemented in ParticleSystem.

Definition at line 119 of file physical.h.

References TypedReferenceCount::init_type().

Referenced by ParticleSystem::init_type().

bool TypedObject::is_exact_type ( TypeHandle  handle) const [inline, inherited]
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(), VrpnClient::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().

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().

void Physical::output ( ostream &  out = cout) const [virtual]

Write a string representation of this instance to <out>.

Reimplemented in ParticleSystem.

Definition at line 143 of file physical.cxx.

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 Physical::remove_angular_force ( AngularForce f) [inline]

removes an angular force from the force list

Definition at line 96 of file physical.I.

void Physical::remove_linear_force ( LinearForce f) [inline]

removes a linear force from the force list

Definition at line 76 of file physical.I.

void Physical::set_viscosity ( float  viscosity) [inline]

Set the local viscosity.

Definition at line 225 of file physical.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 Physical::write ( ostream &  out = cout,
unsigned int  indent = 0 
) const [virtual]

Write a string representation of this instance to <out>.

Definition at line 213 of file physical.cxx.

References PhysicsObject::write(), write_angular_forces(), write_linear_forces(), and write_physics_objects().

void Physical::write_angular_forces ( ostream &  out = cout,
unsigned int  indent = 0 
) const [virtual]

Write a string representation of this instance to <out>.

Definition at line 194 of file physical.cxx.

Referenced by write().

void Physical::write_linear_forces ( ostream &  out = cout,
unsigned int  indent = 0 
) const [virtual]

Write a string representation of this instance to <out>.

Definition at line 175 of file physical.cxx.

Referenced by write().

void Physical::write_physics_objects ( ostream &  out = cout,
unsigned int  indent = 0 
) const [virtual]

Write a string representation of this instance to <out>.

Definition at line 156 of file physical.cxx.

Referenced by write().


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