Panda3D
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Computes texture coordinates for geometry automatically based on vertex position and/or normal. More...
Public Types | |
enum | PandaCompareFunc { MNone = 0, MNever = 1, MLess = 2, MEqual = 3, MLessEqual = 4, MGreater = 5, MNotEqual = 6, MGreaterEqual = 7, MAlways = 8 } |
enum | TexGenMode { MOff = 0, MEyeSphereMap = 1, MWorldCubeMap = 2, MEyeCubeMap = 3, MWorldNormal = 4, MEyeNormal = 5, MWorldPosition = 6, MUnused = 7, MEyePosition = 8, MPointSprite = 9, MLightVector = 10, MConstant = 11 } |
Public Member Functions | |
RenderAttrib const | addStage (TextureStage stage, TexGenMode mode) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage. | |
RenderAttrib const | addStage (TextureStage stage, TexGenMode mode, Point3 const constant_value) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage. | |
RenderAttrib const | addStage (TextureStage stage, TexGenMode mode, string source_name, NodePath const light) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage. | |
int | compareTo (RenderAttrib const other) |
Provides an arbitrary ordering among all unique RenderAttribs, so we can store the essentially different ones in a big set and throw away the rest. | |
RenderAttrib const | compose (RenderAttrib const other) |
Returns a new RenderAttrib object that represents the composition of this attrib with the other attrib. | |
string | encodeToBamStream () |
Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string. | |
bool | encodeToBamStream (basic_stringchar data, BamWriter writer) |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. | |
bool | encodeToBamStream (basic_stringchar data) |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. | |
UpdateSeq | getBamModified () |
Returns the current bam_modified counter. | |
Point3 const | getConstantValue (TextureStage stage) |
Returns the constant value associated with the named texture stage. | |
int | getGeomRendering (int geom_rendering) |
Returns the union of the Geom.GeomRendering bits that will be required once this TexGenAttrib is applied to a geom which includes the indicated geom_rendering bits. | |
NodePath | getLight (TextureStage stage) |
Returns the Light associated with the named texture stage, or the empty NodePath if no light is associated with the indicated stage. | |
TexGenMode | getMode (TextureStage stage) |
Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage. | |
int | getRefCount () |
Returns the current reference count. | |
int | getSlot () |
string | getSourceName (TextureStage stage) |
Returns the source name associated with the named texture stage, or the empty string if no name is associated with the indicated stage. | |
TypeHandle | getType () |
int | getTypeIndex () |
Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. | |
RenderAttrib const | getUnique () |
Returns the pointer to the unique RenderAttrib in the cache that is equivalent to this one. | |
bool | hasGenTexcoordStage (TextureStage stage) |
Returns true if the indicated TextureStage will have texture coordinates generated for it automatically (and thus there is no need to upload the texture coordinates encoded in the vertices). | |
bool | hasStage (TextureStage stage) |
Returns true if there is a mode associated with the indicated stage, or false otherwise (in which case get_transform(stage) will return M_off). | |
RenderAttrib const | invertCompose (RenderAttrib const other) |
Returns a new RenderAttrib object that represents the composition of the inverse of this attrib with the other attrib. | |
bool | isEmpty () |
Returns true if no stages are defined in the TexGenAttrib, false if at least one is. | |
bool | isExactType (TypeHandle handle) |
Returns true if the current object is the indicated type exactly. | |
bool | isOfType (TypeHandle handle) |
Returns true if the current object is or derives from the indicated type. | |
bool | lowerAttribCanOverride () |
Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. | |
markBamModified () | |
Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. | |
output (ostream out) | |
PyObject | reduce (PyObject self) |
This special Python method is implement to provide support for the pickle module. | |
PyObject | reducePersist (PyObject self, PyObject pickler) |
This special Python method is implement to provide support for the pickle module. | |
ref () | |
Explicitly increments the reference count. | |
RenderAttrib const | removeStage (TextureStage stage) |
Returns a new TexGenAttrib just like this one, with the indicated stage removed. | |
bool | testRefCountIntegrity () |
Does some easy checks to make sure that the reference count isn't completely bogus. | |
bool | testRefCountNonzero () |
Does some easy checks to make sure that the reference count isn't zero, or completely bogus. | |
bool | unref () |
Explicitly decrements the reference count. | |
write (ostream out, int indent_level) | |
Static Public Member Functions | |
static TypedWritableReferenceCount | decodeFromBamStream (string data, BamReader reader) |
Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string. | |
static TypedWritableReferenceCount | decodeFromBamStream (string data) |
Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string. | |
static int | getClassSlot () |
static TypeHandle | getClassType () |
static int | getNumAttribs () |
Returns the total number of unique RenderAttrib objects allocated in the world. | |
static | listAttribs (ostream out) |
Lists all of the RenderAttribs in the cache to the output stream, one per line. | |
static RenderAttrib const | make () |
Constructs a TexGenAttrib that generates no stages at all. | |
static RenderAttrib const | make (TextureStage stage, TexGenMode mode) |
Constructs a TexGenAttrib that generates just the indicated stage. | |
static RenderAttrib const | makeDefault () |
Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be. | |
static bool | validateAttribs () |
Ensures that the cache is still stored in sorted order. |
Computes texture coordinates for geometry automatically based on vertex position and/or normal.
This can be used to implement reflection and/or refraction maps, for instance to make shiny surfaces, as well as other special effects such as projective texturing.
enum PandaCompareFunc [inherited] |
enum TexGenMode [inherited] |
RenderAttrib const addStage | ( | TextureStage | stage, |
TexGenMode | mode | ||
) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.
If this stage already exists, its mode is replaced.
RenderAttrib const addStage | ( | TextureStage | stage, |
TexGenMode | mode, | ||
Point3 const | constant_value | ||
) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.
If this stage already exists, its mode is replaced.
This variant also accepts constant_value, which is only meaningful if mode is M_constant.
RenderAttrib const addStage | ( | TextureStage | stage, |
TexGenMode | mode, | ||
string | source_name, | ||
NodePath const | light | ||
) |
Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.
If this stage already exists, its mode is replaced.
This variant also accepts source_name and light, which are only meaningful if mode is M_light_vector.
int compareTo | ( | RenderAttrib const | other | ) | [inherited] |
Provides an arbitrary ordering among all unique RenderAttribs, so we can store the essentially different ones in a big set and throw away the rest.
This method is not needed outside of the RenderAttrib class because all equivalent RenderAttrib objects are guaranteed to share the same pointer; thus, a pointer comparison is always sufficient.
RenderAttrib const compose | ( | RenderAttrib const | other | ) | [inherited] |
Returns a new RenderAttrib object that represents the composition of this attrib with the other attrib.
In most cases, this is the same as the other attrib; a compose b produces b. Some kinds of attributes, like a TextureTransform, for instance, might produce a new result: a compose b produces c.
static TypedWritableReferenceCount decodeFromBamStream | ( | string | data, |
BamReader | reader | ||
) | [static, inherited] |
Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.
Returns NULL on error.
This method is intended to replace decode_raw_from_bam_stream() when you know the stream in question returns an object of type TypedWritableReferenceCount, allowing for easier reference count management. Note that the caller is still responsible for maintaining the reference count on the return value.
static TypedWritableReferenceCount decodeFromBamStream | ( | string | data | ) | [static, inherited] |
Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.
Returns NULL on error.
This method is intended to replace decode_raw_from_bam_stream() when you know the stream in question returns an object of type TypedWritableReferenceCount, allowing for easier reference count management. Note that the caller is still responsible for maintaining the reference count on the return value.
string encodeToBamStream | ( | ) | [inherited] |
Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string.
Returns empty string on failure.
This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.
bool encodeToBamStream | ( | basic_stringchar | data, |
BamWriter | writer | ||
) | [inherited] |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.
Returns true on success, false on failure.
This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.
bool encodeToBamStream | ( | basic_stringchar | data | ) | [inherited] |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.
Returns true on success, false on failure.
This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.
UpdateSeq getBamModified | ( | ) | [inherited] |
Returns the current bam_modified counter.
This counter is normally incremented automatically whenever the object is modified.
static int getClassSlot | ( | ) | [static] |
static TypeHandle getClassType | ( | ) | [static] |
Reimplemented from RenderAttrib.
Point3 const getConstantValue | ( | TextureStage | stage | ) |
Returns the constant value associated with the named texture stage.
This is only meaningful if the mode is M_constant.
Returns the union of the Geom.GeomRendering bits that will be required once this TexGenAttrib is applied to a geom which includes the indicated geom_rendering bits.
NodePath getLight | ( | TextureStage | stage | ) |
TexGenMode getMode | ( | TextureStage | stage | ) |
Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage.
static int getNumAttribs | ( | ) | [static, inherited] |
Returns the total number of unique RenderAttrib objects allocated in the world.
This will go up and down during normal operations.
int getRefCount | ( | ) | [inherited] |
Returns the current reference count.
int getSlot | ( | ) | [inherited] |
string getSourceName | ( | TextureStage | stage | ) |
Returns the source name associated with the named texture stage, or the empty string if no name is associated with the indicated stage.
This is only meaningful if the mode is M_light_vector, in which case it indicates the name of the source texture coordinate set from which the tangent and binormal are derived.
TypeHandle getType | ( | ) | [inherited] |
Reimplemented in AnimChannelBase.
int getTypeIndex | ( | ) | [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().
RenderAttrib const getUnique | ( | ) | [inherited] |
Returns the pointer to the unique RenderAttrib in the cache that is equivalent to this one.
This may be the same pointer as this object, or it may be a different pointer; but it will be an equivalent object, and it will be a shared pointer. This may be called from time to time to improve cache benefits.
bool hasGenTexcoordStage | ( | TextureStage | stage | ) |
Returns true if the indicated TextureStage will have texture coordinates generated for it automatically (and thus there is no need to upload the texture coordinates encoded in the vertices).
bool hasStage | ( | TextureStage | stage | ) |
Returns true if there is a mode associated with the indicated stage, or false otherwise (in which case get_transform(stage) will return M_off).
RenderAttrib const invertCompose | ( | RenderAttrib const | other | ) | [inherited] |
Returns a new RenderAttrib object that represents the composition of the inverse of this attrib with the other attrib.
In most cases, this is the same as the other attrib; !a compose b produces b. Some kinds of attributes, like a TextureTransform, for instance, might produce a new result: !a compose b produces c.
This is similar to compose() except that the source attrib is inverted first. This is used to compute the relative attribute for one node as viewed from some other node, which is especially useful for transform-type attributes.
bool isEmpty | ( | ) |
Returns true if no stages are defined in the TexGenAttrib, false if at least one is.
bool isExactType | ( | TypeHandle | handle | ) | [inherited] |
Returns true if the current object is the indicated type exactly.
bool isOfType | ( | TypeHandle | handle | ) | [inherited] |
Returns true if the current object is or derives from the indicated type.
static listAttribs | ( | ostream | out | ) | [static, inherited] |
Lists all of the RenderAttribs in the cache to the output stream, one per line.
This can be quite a lot of output if the cache is large, so be prepared.
bool lowerAttribCanOverride | ( | ) | [inherited] |
Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact.
This should return false if a RenderAttrib on a higher node will compose into a RenderAttrib on a lower node that has a higher override value, or true if the lower RenderAttrib will completely replace the state.
The default behavior is false: normally, a RenderAttrib in the graph cannot completely override a RenderAttrib above it, regardless of its override value--instead, the two attribs are composed. But for some kinds of RenderAttribs, it is useful to allow this kind of override.
This method only handles the one special case of a lower RenderAttrib with a higher override value. If the higher RenderAttrib has a higher override value, it always completely overrides. And if both RenderAttribs have the same override value, they are always composed.
static RenderAttrib const make | ( | TextureStage | stage, |
TexGenMode | mode | ||
) | [static] |
Constructs a TexGenAttrib that generates just the indicated stage.
static RenderAttrib const make | ( | ) | [static] |
Constructs a TexGenAttrib that generates no stages at all.
static RenderAttrib const makeDefault | ( | ) | [static] |
Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be.
markBamModified | ( | ) | [inherited] |
Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams.
This should normally not need to be called by user code; it should be called internally when the object has been changed in a way that legitimately requires its retransmission to any connected clients.
output | ( | ostream | out | ) | [inherited] |
PyObject reduce | ( | PyObject | self | ) | [inherited] |
This special Python method is implement to provide support for the pickle module.
This hooks into the native pickle and cPickle modules, but it cannot properly handle self-referential BAM objects.
PyObject reducePersist | ( | PyObject | self, |
PyObject | pickler | ||
) | [inherited] |
This special Python method is implement to provide support for the pickle module.
This is similar to __reduce__, but it provides additional support for the missing persistent-state object needed to properly support self-referential BAM objects written to the pickle stream. This hooks into the pickle and cPickle modules implemented in direct/src/stdpy.
ref | ( | ) | [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.
RenderAttrib const removeStage | ( | TextureStage | stage | ) |
Returns a new TexGenAttrib just like this one, with the indicated stage removed.
bool testRefCountIntegrity | ( | ) | [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.
bool testRefCountNonzero | ( | ) | [inherited] |
Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
Returns true if ok, false otherwise.
bool unref | ( | ) | [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, and GeomVertexFormat.
static bool validateAttribs | ( | ) | [static, inherited] |
Ensures that the cache is still stored in sorted order.
Returns true if so, false if there is a problem (which implies someone has modified one of the supposedly-const RenderAttrib objects).