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- Appearance(Node)
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- Appearance
class Appearance(Appearance) |
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Specifies visual properties for geometry
The appearance node specifies a set of appearance properties
to be applied to some number of geometry objects. The Appearance
node should be managed by a surrounding Shape node which binds
the Appearance to the appropriate geometry. Note that multiple
Shape nodes are likely to use the same Appearance node.
There are three attributes of note within the appearance object:
material -- Material node specifying rendering properties
for the surface that affect the lighting model and
transparency of the object. If None, an un-lit material
(emissive color == 1.0) is used by default.
texture -- (Image)Texture node specifying a 2-D texture
to apply to the geometry. If None, no texture is applied.
textureTransform -- Apply a 2-D transform to texture
coordinates before texturing.
Reference:
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#Appearance
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- Method resolution order:
- Appearance
- Appearance
- Node
- object
Methods defined here:
- render(self, mode=None)
- Render Appearance, return (lit, textured, alpha, textureToken)
Renders the appearance node, returning 3 status flags
and a token which can be used to disable any enabled
textures.
Should only be called during visible rendering runs
- renderPost(self, textureToken=None, mode=None)
- Cleanup after rendering of this node has completed
- sortKey(self, mode, matrix)
- Produce the sorting key for this shape's appearance/shaders/etc
key is:
(
(not transparent), # opaque first, then transparent...
distance, # front-to-back for opaque, back-to-front for transparent
'legacy',
textures, # (grouping)
material-params # (grouping)
)
Data descriptors inherited from Appearance:
- material
- exposedField SFNode SFNode NULL
- texture
- exposedField SFNode SFNode NULL
- textureTransform
- exposedField SFNode SFNode NULL
Data and other attributes inherited from Appearance:
- PROTO = 'Appearance'
Methods inherited from Node:
- __init__(self, **namedarguments)
- Initialise the node with appropriate named args
All properties/attributes must be specified with
named arguments, and the property/attribute must
exist within the Node's class/prototype.
This will raise AttributeError/ValueError/TypeError
if the values or the property names are inappropriate.
Note that all Node objects have the attribute/property
exposedField SFString DEF ""
defined. You may therefore specify a DEF name by
passing it as a named argument.
- __repr__(self)
- Get a code-like representation of the Node
Basically every attribute except for sub-nodes values
are returned as a full representation.
- __str__(self)
- Get a friendly representation of the Node
- copy(self, copier=None)
- Copy this node for copier
- toString(self, **namedargs)
- Generate a VRML 97-syntax string representing this Prototype
**namedargs -- key:value
passed arguments for the linearisation object
see lineariser4.Lineariser
Data descriptors inherited from Node:
- DEF
- exposedField SFString DEF
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- externalURL
- exposedField MFString externalURL []
- rootSceneGraph
- exposedField RootScenegraphNode SFNode NULL
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