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LinearNoiseForce Class Reference

Repeating noise force vector. More...

#include <linearNoiseForce.h>

Inheritance diagram for LinearNoiseForce:


Public Member Functions
	LinearNoiseForce (float a=1.0f, bool m=false)
	constructor
	LinearNoiseForce (const LinearNoiseForce &copy)
	copy constructor
virtual	~LinearNoiseForce (void)
	destructor
virtual TypeHandle	get_type (void) const
virtual TypeHandle	force_init_type ()
void	set_amplitude (const float a)
void	set_mass_dependent (bool m)
float	get_amplitude (void) const
bool	get_mass_dependent (void) const
void	set_vector_masks (bool x, bool y, bool z)
virtual LVector3f	get_vector (const PhysicsObject *po)
virtual bool	is_linear (void) const
bool	get_active (void) const
void	set_active (bool active)
ForceNode *	get_force_node (void) const
int	get_type_index () const
	Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool	is_of_type (TypeHandle handle) const
	Returns true if the current object is or derives from the indicated type.
bool	is_exact_type (TypeHandle handle) const
	Returns true if the current object is the indicated type exactly.
int	get_ref_count () const
	Returns the current reference count.
int	ref () const
	Explicitly increments the reference count.
int	unref () const
	Explicitly decrements the reference count.
void	test_ref_count_integrity () const
	Does some easy checks to make sure that the reference count isn't completely bogus.
Static Public Member Functions
void	init_noise_tables (void)
	One-time config function, sets up the PRN lattice.
TypeHandle	get_class_type (void)
void	init_type (void)
Static Public Attributes
int	_random_seed
Static Protected Member Functions
float	bounded_rand (void)
	Returns a float in [0, 1].
LVector3f	random_unit_vector (void)
	generates a random unit vector
Private Member Functions
float	cubic_step (const float x) const
	Smooths a parameterized interpolation using 2x^3 - 3x^2.
LVector3f	vlerp (const float t, const LVector3f &v0, const LVector3f &v1) const
	Vector linear interpolation.
unsigned char	get_prn_entry (const LPoint3f &point) const
	Hashes a point, returns a prn.
unsigned char	get_prn_entry (const float x, const float y, const float z) const
	Hashes a point, returns a prn (piecewise).
LVector3f &	get_lattice_entry (const LPoint3f &point)
	Hashes a point, returns a gradient vector.
LVector3f &	get_lattice_entry (const float x, const float y, const float z)
	Hashes a point, returns a gradient vector (piecewise).
unsigned char	prn_lookup (int index) const
	Returns a valid entry in the prn table.
virtual LVector3f	get_child_vector (const PhysicsObject *po)
	Returns the noise value based on the object's position.
virtual LinearForce *	make_copy (void)
	copier
Static Private Attributes
unsigned char	_prn_table [256]
LVector3f	_gradient_table [256]
bool	_initialized = false
TypeHandle	_type_handle

Detailed Description

Repeating noise force vector.

Definition at line 35 of file linearNoiseForce.h.

Constructor & Destructor Documentation

LinearNoiseForce::LinearNoiseForce ( float a = 1.0f,

bool m = false

)

constructor

Definition at line 72 of file linearNoiseForce.cxx.
Referenced by LinearNoiseForce().

LinearNoiseForce::LinearNoiseForce ( const LinearNoiseForce & copy )

copy constructor

Definition at line 89 of file linearNoiseForce.cxx.
References LinearNoiseForce().

LinearNoiseForce::~LinearNoiseForce ( void ) [virtual]

destructor

Definition at line 102 of file linearNoiseForce.cxx.
References PhysicsObject::get_position().

Member Function Documentation

float LinearRandomForce::bounded_rand ( void ) [static, protected, inherited]

Returns a float in [0, 1].

Definition at line 73 of file linearRandomForce.cxx.

float LinearNoiseForce::cubic_step ( const float x ) const [inline, private]

Smooths a parameterized interpolation using 2x^3 - 3x^2.

Definition at line 98 of file linearNoiseForce.I.

virtual TypeHandle LinearNoiseForce::force_init_type ( void ) [inline, virtual]

Reimplemented from LinearRandomForce.
Definition at line 76 of file linearNoiseForce.h.

bool BaseForce::get_active ( void ) const [inline, inherited]

Definition at line 51 of file baseForce.I.

float LinearForce::get_amplitude ( void ) const [inline, inherited]

Definition at line 40 of file linearForce.I.
References LinearForce::_mass_dependent, and INLINE.

LVector3f LinearNoiseForce::get_child_vector ( const PhysicsObject * po ) [private, virtual]

Returns the noise value based on the object's position.

Implements LinearRandomForce.
Definition at line 129 of file linearNoiseForce.cxx.

TypeHandle LinearNoiseForce::get_class_type ( void ) [inline, static]

Reimplemented from LinearRandomForce.
Definition at line 65 of file linearNoiseForce.h.

ForceNode * BaseForce::get_force_node ( void ) const [inline, inherited]

Definition at line 29 of file baseForce.I.
References BaseForce::_active, and INLINE.

LVector3f & LinearNoiseForce::get_lattice_entry ( const float x,

const float y,

const float z

) [inline, private]

Hashes a point, returns a gradient vector (piecewise).

Definition at line 83 of file linearNoiseForce.I.
References INLINE, and t.

LVector3f & LinearNoiseForce::get_lattice_entry ( const LPoint3f & point ) [inline, private]

Hashes a point, returns a gradient vector.

Definition at line 70 of file linearNoiseForce.I.
References INLINE, and x.

bool LinearForce::get_mass_dependent ( void ) const [inline, inherited]

Definition at line 51 of file linearForce.I.
References LinearForce::_mass_dependent.

unsigned char LinearNoiseForce::get_prn_entry ( const float x,

const float y,

const float z

) const [inline, private]

Hashes a point, returns a prn (piecewise).

Definition at line 57 of file linearNoiseForce.I.

unsigned char LinearNoiseForce::get_prn_entry ( const LPoint3f & point ) const [inline, private]

Hashes a point, returns a prn.

Definition at line 44 of file linearNoiseForce.I.
References INLINE, prn_lookup(), x, and y.

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

Returns the current reference count.

Definition at line 183 of file referenceCount.I.
Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture().

virtual TypeHandle LinearNoiseForce::get_type ( void ) const [inline, virtual]

Reimplemented from LinearRandomForce.
Definition at line 73 of file linearNoiseForce.h.

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 71 of file typedObject.I.
References TypeHandle::get_name(), TypedObject::get_type(), and INLINE.

LVector3f LinearForce::get_vector ( const PhysicsObject * po ) [virtual, inherited]

Implements BaseForce.
Definition at line 83 of file linearForce.cxx.

void LinearNoiseForce::init_noise_tables ( void ) [static]

One-time config function, sets up the PRN lattice.

Definition at line 46 of file linearNoiseForce.cxx.
References _prn_table, and LinearRandomForce::random_unit_vector().

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

Reimplemented from LinearRandomForce.
Definition at line 68 of file linearNoiseForce.h.

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

Returns true if the current object is the indicated type exactly.

Definition at line 101 of file typedObject.I.
Referenced by PT(), and CollisionNode::xform().

bool LinearForce::is_linear ( void ) const [virtual, inherited]

Implements BaseForce.
Definition at line 105 of file linearForce.cxx.

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 86 of file typedObject.I.
Referenced by EggMaterialCollection::collapse_equivalent_materials(), EggTextureCollection::collapse_equivalent_textures(), DeferredNodeProperty::compose(), AnimBundleMaker::create_s_channel(), CharacterMaker::create_slider(), ProjectionScreen::cull_callback(), DataNode::define_output(), EggNode::determine_draw_order(), CharacterMaker::egg_to_index(), EggGroupUniquifier::EggGroupUniquifier(), EggPoolUniquifier::EggPoolUniquifier(), EggGroupNode::find_textures(), StaticTextFont::get_glyph(), EggMaterialCollection::insert_materials(), EggTextureCollection::insert_textures(), CharacterJoint::make_copy(), PT(), EggGroupNode::r_flatten_transforms(), EggGroupNode::r_transform_vertices(), EggGroupNode::recompute_polygon_normals(), CollisionLevelState::reserve(), PandaFramework::reset_frame_rate(), PandaFramework::set_texture(), EggGroupNode::steal_children(), and DataGraphTraverser::traverse().

LinearForce * LinearNoiseForce::make_copy ( void ) [private, virtual]

copier

Implements LinearRandomForce.
Definition at line 114 of file linearNoiseForce.cxx.

unsigned char LinearNoiseForce::prn_lookup ( int index ) const [inline, private]

Returns a valid entry in the prn table.

Definition at line 31 of file linearNoiseForce.I.
References INLINE.
Referenced by get_prn_entry().

LVector3f LinearRandomForce::random_unit_vector ( void ) [inline, static, protected, inherited]

generates a random unit vector

Definition at line 31 of file linearRandomForce.I.
Referenced by init_noise_tables(), and LinearJitterForce::~LinearJitterForce().

int 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.
The return value is the new reference count.
Definition at line 225 of file referenceCount.I.
Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering().

void BaseForce::set_active ( bool active ) [inline, inherited]

Definition at line 40 of file baseForce.I.
References BaseForce::_active, and INLINE.

void LinearForce::set_amplitude ( const float a ) [inline, inherited]

Definition at line 29 of file linearForce.I.
References LinearForce::_amplitude, and INLINE.

void LinearForce::set_mass_dependent ( bool m ) [inline, inherited]

Definition at line 62 of file linearForce.I.
References LinearForce::_y_mask, LinearForce::_z_mask, and y.

void LinearForce::set_vector_masks ( bool x,

bool y,

bool z

) [inline, inherited]

Definition at line 73 of file linearForce.I.

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

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

Definition at line 328 of file referenceCount.I.
References INLINE.
Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount().

int ReferenceCount::unref ( ) const [inline, 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; plus, we don't have a virtual destructor anyway.) 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 the new reference count.
Definition at line 293 of file referenceCount.I.
References INLINE.
Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds().

LVector3f LinearNoiseForce::vlerp ( const float t,

const LVector3f & v0,

const LVector3f & v1

) const [inline, private]

Vector linear interpolation.

Definition at line 111 of file linearNoiseForce.I.

Member Data Documentation

LVector3f LinearNoiseForce::_gradient_table [static, private]

Definition at line 31 of file linearNoiseForce.cxx.

bool LinearNoiseForce::_initialized = false [static, private]

Definition at line 29 of file linearNoiseForce.cxx.

unsigned char LinearNoiseForce::_prn_table [static, private]

Definition at line 30 of file linearNoiseForce.cxx.
Referenced by init_noise_tables().

int LinearNoiseForce::_random_seed [static]

Initial value:
config_physics.GetInt("default_noise_force_seed", 665)

Definition at line 48 of file config_physics.cxx.

TypeHandle LinearNoiseForce::_type_handle [static, private]

Reimplemented from LinearRandomForce.
Definition at line 33 of file linearNoiseForce.cxx.

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

panda/src/physics/linearNoiseForce.h
panda/src/physics/config_physics.cxx
panda/src/physics/linearNoiseForce.cxx
panda/src/physics/linearNoiseForce.I

Generated on Fri May 2 00:51:53 2003 for Panda by

1.3

LinearNoiseForce Class Reference

Public Member Functions

Static Public Member Functions

Static Public Attributes

Static Protected Member Functions

Private Member Functions

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation