Panda3D
Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
TexGenAttrib Class Reference

Computes texture coordinates for geometry automatically based on vertex position and/or normal. More...

Inheritance diagram for TexGenAttrib:
RenderAttrib TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject

Public Member Functions

const RenderAttrib addStage (TextureStage stage, TexGenAttrib::Mode mode)
 Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage. More...
 
const RenderAttrib addStage (TextureStage stage, TexGenAttrib::Mode mode, const LTexCoord3 constant_value)
 Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage. More...
 
const LTexCoord3 getConstantValue (TextureStage stage)
 Returns the constant value associated with the named texture stage. More...
 
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. More...
 
TexGenAttrib::Mode getMode (TextureStage stage)
 Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage. More...
 
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). More...
 
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). More...
 
bool isEmpty ()
 Returns true if no stages are defined in the TexGenAttrib, false if at least one is. More...
 
const RenderAttrib removeStage (TextureStage stage)
 Returns a new TexGenAttrib just like this one, with the indicated stage removed. More...
 
- Public Member Functions inherited from RenderAttrib
int compareTo (const RenderAttrib 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. More...
 
const RenderAttrib compose (const RenderAttrib other)
 Returns a new RenderAttrib object that represents the composition of this attrib with the other attrib. More...
 
int getHash ()
 Returns a suitable hash value for phash_map. More...
 
int getSlot ()
 
const RenderAttrib getUnique ()
 Returns the pointer to the unique RenderAttrib in the cache that is equivalent to this one. More...
 
const RenderAttrib invertCompose (const RenderAttrib other)
 Returns a new RenderAttrib object that represents the composition of the inverse of this attrib with the other attrib. More...
 
bool lowerAttribCanOverride ()
 Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. More...
 
 output (Ostream out)
 
 write (Ostream out, int indent_level)
 
- Public Member Functions inherited from TypedWritable
object __reduce__ ()
 
object __reduce_persist__ (object pickler)
 
VectorUchar encodeToBamStream ()
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
 
bool encodeToBamStream (VectorUchar data, BamWriter writer)
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
 
 fillin (DatagramIterator scan, BamReader manager)
 This internal function is intended to be called by each class's make_from_bam() method to read in all of the relevant data from the BamFile for the new object. More...
 
UpdateSeq getBamModified ()
 Returns the current bam_modified counter. More...
 
 markBamModified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
 
- Public Member Functions inherited from TypedObject
TypeHandle getType ()
 
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
 
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly. More...
 
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type. More...
 
- Public Member Functions inherited from ReferenceCount
int getRefCount ()
 Returns the current reference count. More...
 
 ref ()
 Explicitly increments the reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
bool unref ()
 Explicitly decrements the reference count. More...
 

Static Public Member Functions

static int getClassSlot ()
 
static TypeHandle getClassType ()
 
static const RenderAttrib make ()
 Constructs a TexGenAttrib that generates no stages at all. More...
 
static const RenderAttrib make (TextureStage stage, TexGenAttrib::Mode mode)
 Constructs a TexGenAttrib that generates just the indicated stage. More...
 
static const RenderAttrib makeDefault ()
 Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be. More...
 
- Static Public Member Functions inherited from RenderAttrib
static int garbageCollect ()
 Performs a garbage-collection cycle. More...
 
static TypeHandle getClassType ()
 
static int getNumAttribs ()
 Returns the total number of unique RenderAttrib objects allocated in the world. More...
 
static listAttribs (Ostream out)
 Lists all of the RenderAttribs in the cache to the output stream, one per line. More...
 
static bool validateAttribs ()
 Ensures that the cache is still stored in sorted order. More...
 
- Static Public Member Functions inherited from TypedWritableReferenceCount
static TypedWritableReferenceCount decodeFromBamStream (VectorUchar data, BamReader reader)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. More...
 
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedWritable
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedObject
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle getClassType ()
 

Public Attributes

int class_slot
 
- Public Attributes inherited from RenderAttrib
int slot
 
- Public Attributes inherited from TypedObject
TypeHandle type
 Returns the TypeHandle representing this object's type. More...
 
- Public Attributes inherited from ReferenceCount
int ref_count
 The current reference count. More...
 

Additional Inherited Members

- Public Types inherited from RenderAttrib
enum  PandaCompareFunc {
  M_none = 0, M_never = 1, M_less = 2, M_equal = 3,
  M_less_equal = 4, M_greater = 5, M_not_equal = 6, M_greater_equal = 7,
  M_always = 8
}
 
enum  TexGenMode {
  M_off = 0, M_eye_sphere_map = 1, M_world_cube_map = 2, M_eye_cube_map = 3,
  M_world_normal = 4, M_eye_normal = 5, M_world_position = 6, M_unused = 7,
  M_eye_position = 8, M_point_sprite = 9, M_unused2 = 10, M_constant = 11
}
 

Detailed Description

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.

Member Function Documentation

◆ addStage() [1/2]

const RenderAttrib addStage ( TextureStage  stage,
TexGenAttrib::Mode  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.

◆ addStage() [2/2]

const RenderAttrib addStage ( TextureStage  stage,
TexGenAttrib::Mode  mode,
const LTexCoord3  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.

◆ getClassSlot()

static int getClassSlot ( )
static

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getConstantValue()

const LTexCoord3 getConstantValue ( TextureStage  stage)

Returns the constant value associated with the named texture stage.

This is only meaningful if the mode is M_constant.

◆ getGeomRendering()

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.

◆ getMode()

TexGenAttrib::Mode getMode ( TextureStage  stage)

Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage.

◆ hasGenTexcoordStage()

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).

◆ hasStage()

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).

◆ isEmpty()

bool isEmpty ( )

Returns true if no stages are defined in the TexGenAttrib, false if at least one is.

◆ make() [1/2]

static const RenderAttrib make ( )
static

Constructs a TexGenAttrib that generates no stages at all.

◆ make() [2/2]

static const RenderAttrib make ( TextureStage  stage,
TexGenAttrib::Mode  mode 
)
static

Constructs a TexGenAttrib that generates just the indicated stage.

◆ makeDefault()

static const RenderAttrib makeDefault ( )
static

Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be.

◆ removeStage()

const RenderAttrib removeStage ( TextureStage  stage)

Returns a new TexGenAttrib just like this one, with the indicated stage removed.

Member Data Documentation

◆ class_slot

int class_slot