OpenGLContext.scenegraph.light

Standard Light-node types

Classes

class DirectionalLight( DirectionalLightLight ):
A Directional Light node Note: this is not scoped according to vrml standard, instead it affects the entire scene
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#DirectionalLight
class Light( object ):
Abstract base class for all lights
attributes: pointSource -- whether or not we are a point light source, stored as a float value, if false, the light is a directional light
location
the object-space location of point-source lights (i.e. non-directional)
or
direction
direction a directional or spotlight is shining
color
light diffuse color
ambientIntensity
ambient light fraction of color
Light( self , lightID , mode = None )
Render light using given light ID for the given mode
This will check for: mode.lighting mode.lightingAmbient mode.lightingDiffuse and appropriately enable/disable the various features.
Returns whether or not the light ID has been used, which allows us to reuse the light ID in case this light does not actually need it for this particular rendering pass.
modelMatrix( self , direction = None , inverse = False )
Calculate our model-side matrix
viewMatrix( self , cutOffAngle = None , aspect = 1.0 , near = 0.1 , far = 10000 , inverse = False )
Calculate viewing matrix for our light
Calculate our projection matrix, note that this assumes that we are a spot-like light with a narrow field-of-view (cutOffAngle).
class PointLight( PointLightLight ):
PointLight node
attributes: attenuation -- 3 values giving the light-attenuation values for constant, linear and quadratic attenuation (+ Light attributes) http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#PointLight
Light( self , lightID , mode = None )
Render the light (i.e. cause it to alter the scene
modelMatrix( self , direction = None )
Calculate our model-side matrix
class SpotLight( SpotLightPointLight ):
SpotLight node
attributes: cutOffAngle -- spotlight falloff from the center-line (+ Light attributes) http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#SpotLight
Light( self , lightID , mode = None )
Render the light (i.e. cause it to alter the scene