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Geom Class Reference

A container for geometry primitives. More...

#include "geom.h"

Inheritance diagram for Geom:
CopyOnWriteObject GeomEnums CachedTypedWritableReferenceCount TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject MemoryBase MemoryBase

List of all members.

Classes

class  CacheEntry
class  CacheKey
class  CData
class  CDataCache

Public Types

typedef pmap< const CacheKey
*, PT(CacheEntry),
IndirectLess< CacheKey > > 
Cache

Public Member Functions

 Geom (const GeomVertexData *data)
void add_primitive (const GeomPrimitive *primitive)
 Adds a new GeomPrimitive structure to the Geom object.
void calc_tight_bounds (LPoint3 &min_point, LPoint3 &max_point, bool &found_any, const GeomVertexData *vertex_data, bool got_mat, const LMatrix4 &mat, Thread *current_thread) const
 Expands min_point and max_point to include all of the vertices in the Geom, if any.
void calc_tight_bounds (LPoint3 &min_point, LPoint3 &max_point, bool &found_any, Thread *current_thread) const
 Expands min_point and max_point to include all of the vertices in the Geom, if any.
void calc_tight_bounds (LPoint3 &min_point, LPoint3 &max_point, bool &found_any, const GeomVertexData *vertex_data, bool got_mat, const LMatrix4 &mat, const InternalName *column_name, Thread *current_thread) const
 Similar to calc_tight_bounds(), for UV coordinates or other named columns.
bool check_valid () const
 Verifies that the all of the primitives within the geom reference vertices that actually exist within the geom's GeomVertexData.
bool check_valid (const GeomVertexData *vertex_data) const
 Verifies that the all of the primitives within the geom reference vertices that actually exist within the indicated GeomVertexData.
void clear_bounds ()
 Reverses the effect of a previous call to set_bounds(), and allows the bounding volume to be automatically computed once more based on the vertices.
void clear_cache ()
 Removes all of the previously-cached results of munge_geom().
void clear_cache_stage (Thread *current_thread)
 Removes all of the previously-cached results of munge_geom(), at the current pipeline stage and upstream.
void clear_primitives ()
 Removes all the primitives from the Geom object (but keeps the same table of vertices).
virtual bool copy_primitives_from (const Geom *other)
 Copies the primitives from the indicated Geom into this one.
 CPT (GeomVertexData) get_vertex_data(Thread *current_thread
 CPT (GeomPrimitive) get_primitive(int i) const
 CPT (BoundingVolume) get_bounds(Thread *current_thread
void decompose_in_place ()
 Decomposes all of the primitives within this Geom, leaving the results in place.
void doubleside_in_place ()
 Doublesides all of the primitives within this Geom, leaving the results in place.
bool draw (GraphicsStateGuardianBase *gsg, const GeomMunger *munger, const GeomVertexData *vertex_data, bool force, Thread *current_thread) const
 Actually draws the Geom with the indicated GSG, using the indicated vertex data (which might have been pre-munged to support the GSG's needs).
virtual void finalize (BamReader *manager)
 Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.
virtual TypeHandle force_init_type ()
BoundingVolume::BoundsType get_bounds_type () const
 Returns the bounding volume type set with set_bounds_type().
int get_geom_rendering () const
 Returns the set of GeomRendering bits that represent the rendering properties required to properly render this Geom.
UpdateSeq get_modified (Thread *current_thread=Thread::get_current_thread()) const
 Returns a sequence number which is guaranteed to change at least every time any of the primitives in the Geom is modified, or the set of primitives is modified.
int get_nested_vertices (Thread *current_thread=Thread::get_current_thread()) const
 Returns the number of vertices rendered by all primitives within the Geom.
int get_num_bytes () const
 Returns the number of bytes consumed by the geom and its primitives (but not including its vertex table).
int get_num_primitives () const
 Returns the number of GeomPrimitive objects stored within the Geom, each of which represents a number of primitives of a particular type.
PrimitiveType get_primitive_type () const
 Returns the fundamental primitive type that is common to all GeomPrimitives added within the Geom.
ShadeModel get_shade_model () const
 Returns the shade model common to all of the individual GeomPrimitives that have been added to the geom.
virtual TypeHandle get_type () const
UsageHint get_usage_hint () const
 Returns the minimum (i.e.
bool is_empty () const
 Returns true if there appear to be no vertices to be rendered by this Geom, false if has some actual data.
bool is_prepared (PreparedGraphicsObjects *prepared_objects) const
 Returns true if the geom has already been prepared or enqueued for preparation on the indicated GSG, false otherwise.
virtual Geommake_copy () const
 Returns a newly-allocated Geom that is a shallow copy of this one.
int make_nonindexed (bool composite_only)
 Converts the geom from indexed to nonindexed by duplicating vertices as necessary.
void make_points_in_place ()
 Replaces the GeomPrimitives within this Geom with corresponding GeomPoints.
 MAKE_SEQ (get_primitives, get_num_primitives, get_primitive)
void mark_bounds_stale () const
 Marks the bounding volume of the Geom as stale so that it should be recomputed.
void offset_vertices (const GeomVertexData *data, int offset)
 Replaces a Geom's vertex table with a new table, and simultaneously adds the indicated offset to all vertex references within the Geom's primitives.
void operator= (const Geom &copy)
 The copy assignment operator is not pipeline-safe.
virtual void output (ostream &out) const
void prepare (PreparedGraphicsObjects *prepared_objects)
 Indicates that the geom should be enqueued to be prepared in the indicated prepared_objects at the beginning of the next frame.
GeomContextprepare_now (PreparedGraphicsObjects *prepared_objects, GraphicsStateGuardianBase *gsg)
 Creates a context for the geom on the particular GSG, if it does not already exist.
 PT (GeomVertexData) modify_vertex_data()
 PT (GeomPrimitive) modify_primitive(int i)
 PT (Geom) decompose() const
 PT (Geom) doubleside() const
 PT (Geom) reverse() const
 PT (Geom) rotate() const
 PT (Geom) unify(int max_indices
 PT (Geom) make_points() const
bool release (PreparedGraphicsObjects *prepared_objects)
 Frees the geom context only on the indicated object, if it exists there.
int release_all ()
 Frees the context allocated on all objects for which the geom has been declared.
void remove_primitive (int i)
 Removes the ith primitive from the list.
bool request_resident () const
 Returns true if all the primitive arrays are currently resident in memory.
void reverse_in_place ()
 Reverses all of the primitives within this Geom, leaving the results in place.
void rotate_in_place ()
 Rotates all of the primitives within this Geom, leaving the results in place.
void set_bounds (const BoundingVolume *volume)
 Resets the bounding volume so that it is the indicated volume.
void set_bounds_type (BoundingVolume::BoundsType bounds_type)
 Specifies the desired type of bounding volume that will be created for this Geom.
void set_primitive (int i, const GeomPrimitive *primitive)
 Replaces the ith GeomPrimitive object stored within the Geom with the new object.
void set_usage_hint (UsageHint usage_hint)
 Changes the UsageHint hint for all of the primitives on this Geom to the same value.
void set_vertex_data (const GeomVertexData *data)
 Replaces the Geom's underlying vertex data table with a completely new table.
void transform_vertices (const LMatrix4 &mat)
 Applies the indicated transform to all of the vertices in the Geom.
void unify_in_place (int max_indices, bool preserve_order)
 Unifies all of the primitives contained within this Geom into a single (or as few as possible, within the constraints of max_indices) primitive objects.
virtual void write (ostream &out, int indent_level=0) const
virtual void write_datagram (BamWriter *manager, Datagram &dg)
 Writes the contents of this object to the datagram for shipping out to a Bam file.

Static Public Member Functions

static TypeHandle get_class_type ()
static UpdateSeq get_next_modified ()
 Returns a monotonically increasing sequence.
static void init_type ()
static void register_with_read_factory ()
 Tells the BamReader how to create objects of type Geom.

Public Attributes

bool preserve_order const

Protected Member Functions

 Geom (const Geom &copy)
 Use make_copy() to duplicate a Geom.
void fillin (DatagramIterator &scan, BamReader *manager)
 This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new Geom.
virtual PT (CopyOnWriteObject) make_cow_copy()

Static Protected Member Functions

static TypedWritablemake_from_bam (const FactoryParams &params)
 This function is called by the BamReader's factory when a new object of type Geom is encountered in the Bam file.

Friends

class CacheEntry
class GeomContext
class GeomMunger
class GeomPipelineReader
class PreparedGraphicsObjects

Detailed Description

A container for geometry primitives.

This class associates one or more GeomPrimitive objects with a table of vertices defined by a GeomVertexData object. All of the primitives stored in a particular Geom are drawn from the same set of vertices (each primitive uses a subset of all of the vertices in the table), and all of them must be rendered at the same time, in the same graphics state.

Definition at line 58 of file geom.h.


Constructor & Destructor Documentation

Geom::Geom ( const Geom copy) [protected]

Use make_copy() to duplicate a Geom.

Definition at line 69 of file geom.cxx.


Member Function Documentation

void Geom::add_primitive ( const GeomPrimitive primitive)

Adds a new GeomPrimitive structure to the Geom object.

This specifies a particular subset of vertices that are used to define geometric primitives of the indicated type.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 366 of file geom.cxx.

References GeomPrimitive::check_valid(), clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

Referenced by copy_primitives_from().

void Geom::calc_tight_bounds ( LPoint3 min_point,
LPoint3 max_point,
bool &  found_any,
const GeomVertexData vertex_data,
bool  got_mat,
const LMatrix4 mat,
Thread current_thread 
) const [inline]

Expands min_point and max_point to include all of the vertices in the Geom, if any.

found_any is set true if any points are found. It is the caller's responsibility to initialize min_point, max_point, and found_any before calling this function.

This version of the method allows the Geom to specify an alternate vertex data table (for instance, if the vertex data has already been munged), and also allows the result to be computed in any coordinate space by specifying a transform matrix.

Definition at line 369 of file geom.I.

Referenced by calc_tight_bounds().

void Geom::calc_tight_bounds ( LPoint3 min_point,
LPoint3 max_point,
bool &  found_any,
Thread current_thread 
) const [inline]

Expands min_point and max_point to include all of the vertices in the Geom, if any.

found_any is set true if any points are found. It is the caller's responsibility to initialize min_point, max_point, and found_any before calling this function.

This version of the method assumes the Geom will use its own vertex data, and the results are computed in the Geom's own coordinate space.

Definition at line 396 of file geom.I.

References calc_tight_bounds(), and LMatrix4f::ident_mat().

void Geom::calc_tight_bounds ( LPoint3 min_point,
LPoint3 max_point,
bool &  found_any,
const GeomVertexData vertex_data,
bool  got_mat,
const LMatrix4 mat,
const InternalName column_name,
Thread current_thread 
) const [inline]

Similar to calc_tight_bounds(), for UV coordinates or other named columns.

Definition at line 411 of file geom.I.

bool Geom::check_valid ( ) const

Verifies that the all of the primitives within the geom reference vertices that actually exist within the geom's GeomVertexData.

Returns true if the geom appears to be valid, false otherwise.

Definition at line 924 of file geom.cxx.

References Thread::get_current_thread().

Referenced by GeomNode::add_geom(), GeomNode::check_valid(), and GeomNode::set_geom().

bool Geom::check_valid ( const GeomVertexData vertex_data) const

Verifies that the all of the primitives within the geom reference vertices that actually exist within the indicated GeomVertexData.

Returns true if the geom appears to be valid, false otherwise.

Definition at line 941 of file geom.cxx.

References Thread::get_current_thread().

void Geom::clear_bounds ( ) [inline]

Reverses the effect of a previous call to set_bounds(), and allows the bounding volume to be automatically computed once more based on the vertices.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 347 of file geom.I.

Removes all of the previously-cached results of munge_geom().

This blows away the entire cache, upstream and downstream the pipeline. Use clear_cache_stage() instead if you only want to blow away the cache at the current stage and upstream.

Definition at line 1045 of file geom.cxx.

Referenced by operator=().

void Geom::clear_cache_stage ( Thread current_thread)

Removes all of the previously-cached results of munge_geom(), at the current pipeline stage and upstream.

Does not affect the downstream cache.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 1068 of file geom.cxx.

Referenced by add_primitive(), clear_primitives(), decompose_in_place(), doubleside_in_place(), make_nonindexed(), make_points_in_place(), offset_vertices(), remove_primitive(), reverse_in_place(), rotate_in_place(), set_primitive(), set_usage_hint(), set_vertex_data(), and unify_in_place().

Removes all the primitives from the Geom object (but keeps the same table of vertices).

You may then re-add primitives one at a time via calls to add_primitive().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 438 of file geom.cxx.

References clear_cache_stage(), and Thread::get_current_thread().

bool Geom::copy_primitives_from ( const Geom other) [virtual]

Copies the primitives from the indicated Geom into this one.

This does require that both Geoms contain the same fundamental type primitives, both have a compatible shade model, and both use the same GeomVertexData. Both Geoms must also be the same specific class type (i.e. if one is a GeomTextGlyph, they both must be.)

Returns true if the copy is successful, or false otherwise (because the Geoms were mismatched).

Definition at line 794 of file geom.cxx.

References add_primitive(), get_num_primitives(), get_primitive_type(), and get_shade_model().

Decomposes all of the primitives within this Geom, leaving the results in place.

See GeomPrimitive::decompose().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 461 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

Doublesides all of the primitives within this Geom, leaving the results in place.

See GeomPrimitive::doubleside().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 499 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

bool Geom::draw ( GraphicsStateGuardianBase gsg,
const GeomMunger munger,
const GeomVertexData vertex_data,
bool  force,
Thread current_thread 
) const

Actually draws the Geom with the indicated GSG, using the indicated vertex data (which might have been pre-munged to support the GSG's needs).

Returns true if all of the primitives were drawn normally, false if there was a problem (for instance, some of the data was nonresident). If force is passed true, it will wait for the data to become resident if necessary.

Definition at line 1210 of file geom.cxx.

References GeomPipelineReader::check_usage_hint(), and GeomPipelineReader::draw().

void Geom::fillin ( DatagramIterator scan,
BamReader manager 
) [protected, virtual]

This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new Geom.

Reimplemented from TypedWritable.

Definition at line 1570 of file geom.cxx.

References BamReader::read_cdata().

void Geom::finalize ( BamReader manager) [virtual]

Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.

Reimplemented from TypedWritable.

Definition at line 1547 of file geom.cxx.

BoundingVolume::BoundsType Geom::get_bounds_type ( ) const [inline]

Returns the bounding volume type set with set_bounds_type().

Definition at line 306 of file geom.I.

int Geom::get_geom_rendering ( ) const [inline]

Returns the set of GeomRendering bits that represent the rendering properties required to properly render this Geom.

Definition at line 54 of file geom.I.

Referenced by StandardMunger::munge_geom_impl(), and StandardMunger::premunge_geom_impl().

UpdateSeq Geom::get_modified ( Thread current_thread = Thread::get_current_thread()) const [inline]

Returns a sequence number which is guaranteed to change at least every time any of the primitives in the Geom is modified, or the set of primitives is modified.

However, this does not include modifications to the vertex data, which should be tested separately.

Definition at line 256 of file geom.I.

Referenced by GeomMunger::munge_geom().

int Geom::get_nested_vertices ( Thread current_thread = Thread::get_current_thread()) const

Returns the number of vertices rendered by all primitives within the Geom.

Definition at line 976 of file geom.cxx.

Returns a monotonically increasing sequence.

Each time this is called, a new sequence number is returned, higher than the previous value.

This is used to ensure that GeomVertexArrayData::get_modified() and GeomPrimitive::get_modified() update from the same space, so that Geom::get_modified() returns a meaningful value.

Definition at line 1236 of file geom.cxx.

Referenced by GeomPrimitive::add_consecutive_vertices(), add_primitive(), GeomPrimitive::add_vertex(), GeomVertexData::clear_rows(), GeomPrimitive::clear_vertices(), GeomPrimitive::close_primitive(), GeomVertexArrayDataHandle::copy_data_from(), GeomVertexArrayDataHandle::copy_subdata_from(), decompose_in_place(), doubleside_in_place(), GeomVertexArrayDataHandle::get_write_pointer(), make_nonindexed(), make_points_in_place(), GeomPrimitive::modify_ends(), offset_vertices(), GeomPrimitive::offset_vertices(), GeomVertexArrayData::operator=(), GeomVertexData::operator=(), remove_primitive(), reverse_in_place(), rotate_in_place(), GeomVertexArrayDataHandle::set_data(), GeomPrimitive::set_ends(), GeomVertexData::set_format(), GeomPrimitive::set_minmax(), GeomPrimitive::set_nonindexed_vertices(), set_primitive(), GeomVertexData::set_slider_table(), GeomVertexArrayDataHandle::set_subdata(), GeomVertexData::set_transform_blend_table(), GeomVertexData::set_transform_table(), set_usage_hint(), GeomVertexArrayData::set_usage_hint(), GeomPrimitive::set_usage_hint(), GeomVertexData::set_usage_hint(), GeomPrimitive::set_vertices(), and unify_in_place().

int Geom::get_num_bytes ( ) const

Returns the number of bytes consumed by the geom and its primitives (but not including its vertex table).

Definition at line 835 of file geom.cxx.

int Geom::get_num_primitives ( ) const [inline]

Returns the number of GeomPrimitive objects stored within the Geom, each of which represents a number of primitives of a particular type.

Definition at line 110 of file geom.I.

Referenced by SpriteParticleRenderer::add_from_node(), copy_primitives_from(), PhysxSoftBodyNode::set_from_geom(), and unify_in_place().

Geom::PrimitiveType Geom::get_primitive_type ( ) const [inline]

Returns the fundamental primitive type that is common to all GeomPrimitives added within the Geom.

All nested primitives within a particular Geom must be the same type (that is, you can mix triangles and tristrips, because they are both the same fundamental type PT_polygons, but you cannot mix triangles and points withn the same Geom).

Definition at line 28 of file geom.I.

Referenced by copy_primitives_from().

Geom::ShadeModel Geom::get_shade_model ( ) const [inline]

Returns the shade model common to all of the individual GeomPrimitives that have been added to the geom.

Definition at line 41 of file geom.I.

Referenced by copy_primitives_from().

Geom::UsageHint Geom::get_usage_hint ( ) const [inline]

Returns the minimum (i.e.

most dynamic) usage_hint among all of the individual GeomPrimitives that have been added to the geom.

Definition at line 67 of file geom.I.

Referenced by SceneGraphReducer::r_make_nonindexed().

bool Geom::is_empty ( ) const [inline]

Returns true if there appear to be no vertices to be rendered by this Geom, false if has some actual data.

Definition at line 97 of file geom.I.

Referenced by GeomNode::add_for_draw().

bool Geom::is_prepared ( PreparedGraphicsObjects prepared_objects) const

Returns true if the geom has already been prepared or enqueued for preparation on the indicated GSG, false otherwise.

Definition at line 1104 of file geom.cxx.

References PreparedGraphicsObjects::is_geom_queued().

Referenced by PreparedGraphicsObjects::is_geom_prepared().

Geom * Geom::make_copy ( ) const [virtual]

Returns a newly-allocated Geom that is a shallow copy of this one.

It will be a different Geom pointer, but its internal data may or may not be shared with that of the original Geom.

Definition at line 118 of file geom.cxx.

Referenced by StandardMunger::munge_geom_impl(), and StandardMunger::premunge_geom_impl().

TypedWritable * Geom::make_from_bam ( const FactoryParams params) [static, protected]

This function is called by the BamReader's factory when a new object of type Geom is encountered in the Bam file.

It should create the Geom and extract its information from the file.

Definition at line 1527 of file geom.cxx.

References BamReader::register_finalize().

Referenced by register_with_read_factory().

int Geom::make_nonindexed ( bool  composite_only)

Converts the geom from indexed to nonindexed by duplicating vertices as necessary.

If composite_only is true, then only composite primitives such as trifans and tristrips are converted. Returns the number of GeomPrimitive objects converted.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 252 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

Referenced by SceneGraphReducer::r_make_nonindexed().

Replaces the GeomPrimitives within this Geom with corresponding GeomPoints.

See GeomPrimitive::make_points().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 752 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

void Geom::mark_bounds_stale ( ) const [inline]

Marks the bounding volume of the Geom as stale so that it should be recomputed.

Usually it is not necessary to call this explicitly.

Definition at line 269 of file geom.I.

void Geom::offset_vertices ( const GeomVertexData data,
int  offset 
)

Replaces a Geom's vertex table with a new table, and simultaneously adds the indicated offset to all vertex references within the Geom's primitives.

This is intended to be used to combine multiple GeomVertexDatas from different Geoms into a single big buffer, with each Geom referencing a subset of the vertices in the buffer.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 209 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

void Geom::operator= ( const Geom copy)

The copy assignment operator is not pipeline-safe.

This will completely obliterate all stages of the pipeline, so don't do it for a Geom that is actively being used for rendering.

Definition at line 84 of file geom.cxx.

References clear_cache().

void Geom::prepare ( PreparedGraphicsObjects prepared_objects)

Indicates that the geom should be enqueued to be prepared in the indicated prepared_objects at the beginning of the next frame.

This will ensure the geom is already loaded into geom memory if it is expected to be rendered soon.

Use this function instead of prepare_now() to preload geoms from a user interface standpoint.

Definition at line 1092 of file geom.cxx.

References PreparedGraphicsObjects::enqueue_geom().

Creates a context for the geom on the particular GSG, if it does not already exist.

Returns the new (or old) GeomContext. This assumes that the GraphicsStateGuardian is the currently active rendering context and that it is ready to accept new geoms. If this is not necessarily the case, you should use prepare() instead.

Normally, this is not called directly except by the GraphicsStateGuardian; a geom does not need to be explicitly prepared by the user before it may be rendered.

Definition at line 1181 of file geom.cxx.

References PreparedGraphicsObjects::prepare_geom_now().

Referenced by PreparedGraphicsObjects::begin_frame().

Tells the BamReader how to create objects of type Geom.

Definition at line 1501 of file geom.cxx.

References BamReader::get_factory(), make_from_bam(), and Factory< Type >::register_factory().

bool Geom::release ( PreparedGraphicsObjects prepared_objects)

Frees the geom context only on the indicated object, if it exists there.

Returns true if it was released, false if it had not been prepared.

Definition at line 1121 of file geom.cxx.

References PreparedGraphicsObjects::dequeue_geom(), and PreparedGraphicsObjects::release_geom().

Frees the context allocated on all objects for which the geom has been declared.

Returns the number of contexts which have been freed.

Definition at line 1142 of file geom.cxx.

References PreparedGraphicsObjects::release_geom().

void Geom::remove_primitive ( int  i)

Removes the ith primitive from the list.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 409 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

bool Geom::request_resident ( ) const

Returns true if all the primitive arrays are currently resident in memory.

If this returns false, the data will be brought back into memory shortly; try again later.

This does not also test the Geom's associated GeomVertexData. That must be tested separately.

Definition at line 861 of file geom.cxx.

Referenced by GeomMunger::munge_geom().

Reverses all of the primitives within this Geom, leaving the results in place.

See GeomPrimitive::reverse().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 537 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

Rotates all of the primitives within this Geom, leaving the results in place.

See GeomPrimitive::rotate().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 575 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

void Geom::set_bounds ( const BoundingVolume volume) [inline]

Resets the bounding volume so that it is the indicated volume.

When it is explicitly set, the bounding volume will no longer be automatically computed; call clear_bounds() if you would like to return the bounding volume to its default behavior.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 325 of file geom.I.

void Geom::set_bounds_type ( BoundingVolume::BoundsType  bounds_type) [inline]

Specifies the desired type of bounding volume that will be created for this Geom.

This is normally BoundingVolume::BT_default, which means to set the type according to the config variable "bounds-type".

If this is BT_sphere or BT_box, a BoundingSphere or BoundingBox is explicitly created. If it is BT_best, a BoundingBox is created.

This affects the implicit bounding volume only. If an explicit bounding volume is set on the Geom with set_bounds(), that bounding volume type is used. (This is different behavior from the similar method on PandaNode.)

Definition at line 293 of file geom.I.

void Geom::set_primitive ( int  i,
const GeomPrimitive primitive 
)

Replaces the ith GeomPrimitive object stored within the Geom with the new object.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 320 of file geom.cxx.

References GeomPrimitive::check_valid(), clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

void Geom::set_usage_hint ( Geom::UsageHint  usage_hint)

Changes the UsageHint hint for all of the primitives on this Geom to the same value.

See get_usage_hint().

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 134 of file geom.cxx.

References clear_cache_stage(), Thread::get_current_thread(), and get_next_modified().

void Geom::set_vertex_data ( const GeomVertexData data)

Replaces the Geom's underlying vertex data table with a completely new table.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 183 of file geom.cxx.

References clear_cache_stage(), and Thread::get_current_thread().

Referenced by GeomTransformer::apply_texture_colors(), StandardMunger::munge_geom_impl(), StandardMunger::premunge_geom_impl(), GeomTransformer::reverse_normals(), GeomTransformer::set_color(), GeomTransformer::set_format(), GeomTransformer::transform_colors(), GeomTransformer::transform_texcoords(), and GeomTransformer::transform_vertices().

void Geom::transform_vertices ( const LMatrix4 mat)

Applies the indicated transform to all of the vertices in the Geom.

If the Geom happens to share a vertex table with another Geom, this operation will duplicate the vertex table instead of breaking the other Geom; however, if multiple Geoms with shared tables are transformed by the same matrix, they will no longer share tables after the operation. Consider using the GeomTransformer if you will be applying the same transform to multiple Geoms.

Definition at line 892 of file geom.cxx.

void Geom::unify_in_place ( int  max_indices,
bool  preserve_order 
)

Unifies all of the primitives contained within this Geom into a single (or as few as possible, within the constraints of max_indices) primitive objects.

This may require decomposing the primitives if, for instance, the Geom contains both triangle strips and triangle fans.

max_indices represents the maximum number of indices that will be put in any one GeomPrimitive. If preserve_order is true, then the primitives will not be reordered during the operation, even if this results in a suboptimal result.

Don't call this in a downstream thread unless you don't mind it blowing away other changes you might have recently made in an upstream thread.

Definition at line 621 of file geom.cxx.

References GeomPrimitive::check_valid(), clear_cache_stage(), GeomPrimitive::clear_vertices(), Thread::get_current_thread(), get_next_modified(), get_num_primitives(), GeomPrimitive::get_num_vertices(), GeomPrimitive::get_primitive_end(), GeomPrimitive::get_primitive_num_vertices(), GeomPrimitive::get_primitive_start(), GeomPrimitive::get_vertex(), and GeomPrimitive::set_shade_model().

void Geom::write_datagram ( BamWriter manager,
Datagram dg 
) [virtual]

Writes the contents of this object to the datagram for shipping out to a Bam file.

Reimplemented from TypedWritable.

Definition at line 1512 of file geom.cxx.

References BamWriter::write_cdata().


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