Panda3D
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An instance of this object is returned by Texture::peek(). More...
#include "texturePeeker.h"
Public Member Functions | |
void | filter_rect (Colorf &color, float min_u, float min_v, float max_u, float max_v) const |
Fills "color" with the average RGBA color of the texels within the rectangle defined by the specified coordinate range. | |
void | filter_rect (Colorf &color, float min_u, float min_v, float min_w, float max_u, float max_v, float max_w) const |
Fills "color" with the average RGBA color of the texels within the rectangle defined by the specified coordinate range. | |
int | get_ref_count () const |
Returns the current reference count. | |
WeakReferenceList * | get_weak_list () const |
Returns the WeakReferenceList associated with this ReferenceCount object. | |
int | get_x_size () const |
Returns the width of the texture image that is contributing to the TexturePeeker's information. | |
int | get_y_size () const |
Returns the height of the texture image that is contributing to the TexturePeeker's information. | |
int | get_z_size () const |
Returns the depth of the texture image that is contributing to the TexturePeeker's information. | |
bool | has_weak_list () const |
Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. | |
bool | is_valid () const |
Returns true if the TexturePeeker was able to initialize itself and is ready to return texel colors. | |
void | local_object () |
This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. | |
void | lookup (Colorf &color, float u, float v) const |
Fills "color" with the RGBA color of the texel at point (u, v). | |
void | lookup (Colorf &color, float u, float v, float w) const |
Fills "color" with the RGBA color of the texel at point (u, v, w). | |
void | operator delete (void *ptr) |
void | operator delete (void *ptr, void *) |
void | operator delete[] (void *ptr) |
void | operator delete[] (void *, void *) |
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 | ref () const |
Explicitly increments the reference count. | |
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. | |
Static Public Member Functions | |
static TypeHandle | get_class_type () |
static void | init_type () |
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. | |
Friends | |
class | Texture |
An instance of this object is returned by Texture::peek().
This object allows quick and easy inspection of a texture's texels by (u, v) coordinates.
Definition at line 30 of file texturePeeker.h.
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().
void TexturePeeker::filter_rect | ( | Colorf & | color, |
float | min_u, | ||
float | min_v, | ||
float | min_w, | ||
float | max_u, | ||
float | max_v, | ||
float | max_w | ||
) | const |
Fills "color" with the average RGBA color of the texels within the rectangle defined by the specified coordinate range.
The texel color is linearly filtered over the entire region. u, v, and w will wrap around regardless of the texture's wrap mode.
Definition at line 242 of file texturePeeker.cxx.
void TexturePeeker::filter_rect | ( | Colorf & | color, |
float | min_u, | ||
float | min_v, | ||
float | max_u, | ||
float | max_v | ||
) | const |
Fills "color" with the average RGBA color of the texels within the rectangle defined by the specified coordinate range.
The texel color is linearly filtered over the entire region. u, v, and w will wrap around regardless of the texture's wrap mode.
Definition at line 210 of file texturePeeker.cxx.
int ReferenceCount::get_ref_count | ( | ) | const [inline, inherited] |
Returns the current reference count.
Definition at line 155 of file referenceCount.I.
References ReferenceCount::test_ref_count_integrity().
Referenced by TransformState::clear_cache(), RenderState::clear_cache(), RenderState::finalize(), RenderEffects::finalize(), RenderEffect::finalize(), RenderAttrib::finalize(), InternalName::finalize(), TransformState::get_num_unused_states(), RenderState::get_num_unused_states(), TransformState::list_cycles(), RenderState::list_cycles(), GeomVertexFormat::remove_column(), TransformState::unref(), RenderState::unref(), RenderState::~RenderState(), and TransformState::~TransformState().
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().
int TexturePeeker::get_x_size | ( | ) | const [inline] |
Returns the width of the texture image that is contributing to the TexturePeeker's information.
This may be either the Texture's full width, or its simple ram image's width.
Definition at line 37 of file texturePeeker.I.
int TexturePeeker::get_y_size | ( | ) | const [inline] |
Returns the height of the texture image that is contributing to the TexturePeeker's information.
This may be either the Texture's full height, or its simple ram image's height.
Definition at line 50 of file texturePeeker.I.
int TexturePeeker::get_z_size | ( | ) | const [inline] |
Returns the depth of the texture image that is contributing to the TexturePeeker's information.
Definition at line 61 of file texturePeeker.I.
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().
bool TexturePeeker::is_valid | ( | ) | const [inline] |
Returns true if the TexturePeeker was able to initialize itself and is ready to return texel colors.
Definition at line 24 of file texturePeeker.I.
References PointerToVoid::is_null().
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 TexturePeeker::lookup | ( | Colorf & | color, |
float | u, | ||
float | v | ||
) | const |
Fills "color" with the RGBA color of the texel at point (u, v).
The texel color is determined via nearest-point sampling (no filtering of adjacent pixels), regardless of the filter type associated with the texture. u, v, and w will wrap around regardless of the texture's wrap mode.
Definition at line 163 of file texturePeeker.cxx.
References ConstPointerToArray< Element >::p().
void TexturePeeker::lookup | ( | Colorf & | color, |
float | u, | ||
float | v, | ||
float | w | ||
) | const |
Fills "color" with the RGBA color of the texel at point (u, v, w).
The texel color is determined via nearest-point sampling (no filtering of adjacent pixels), regardless of the filter type associated with the texture. u, v, and w will wrap around regardless of the texture's wrap mode.
Definition at line 186 of file texturePeeker.cxx.
References ConstPointerToArray< Element >::p().
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().
bool ReferenceCount::test_ref_count_integrity | ( | ) | const [inline, 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 236 of file referenceCount.I.
References ReferenceCount::do_test_ref_count_integrity().
Referenced by EggGroupNode::add_child(), InternalName::find_ancestor(), InternalName::get_ancestor(), ReferenceCount::get_ref_count(), InternalName::get_top(), ReferenceCount::ref(), EggVertex::test_gref_integrity(), EggVertex::test_pref_integrity(), EggNode::test_under_integrity(), EggPrimitive::test_vref_integrity(), EggGroup::test_vref_integrity(), MouseWatcher::throw_event_pattern(), ReferenceCount::unref(), and EggNode::update_under().
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().