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KX_LightObject(KX_GameObject)
=============================
.. module:: bge.types
base class --- :class:`KX_GameObject`
.. class:: KX_LightObject(KX_GameObject)
A Light object.
.. code-block:: python
# Turn on a red alert light.
import bge
co = bge.logic.getCurrentController()
light = co.owner
light.energy = 1.0
light.color = [1.0, 0.0, 0.0]
.. data:: SPOT
A spot light source. See attribute :data:`type`
.. data:: SUN
A point light source with no attenuation. See attribute :data:`type`
.. data:: NORMAL
A point light source. See attribute :data:`type`
.. attribute:: type
The type of light - must be SPOT, SUN or NORMAL
.. attribute:: layer
The layer mask that this light affects object on.
:type: bitfield
.. attribute:: energy
The brightness of this light.
:type: float
.. attribute:: shadowClipStart
The shadowmap clip start, below which objects will not generate shadows.
:type: float (read only)
.. attribute:: shadowClipEnd
The shadowmap clip end, beyond which objects will not generate shadows.
:type: float (read only)
..attribute:: shadowFrustumSize
Size of the frustum used for creating the shadowmap.
:type: float (read only)
..attribute:: shadowBindId
The OpenGL shadow texture bind number/id.
:type: int (read only)
..attribute:: shadowMapType
The shadow shadow map type (0 -> Simple; 1 -> Variance)
:type: int (read only)
..attribute:: shadowBias
The shadow buffer sampling bias.
:type: float (read only)
..attribute:: shadowBleedBias
The bias for reducing light-bleed on variance shadow maps.
:type: float (read only)
..attribute:: useShadow
Returns True if the light has Shadow option activated, else returns False.
:type: boolean (read only)
.. attribute:: shadowColor
The color of this light shadows. Black = (0.0, 0.0, 0.0), White = (1.0, 1.0, 1.0).
:type: :class:`mathutils.Color` (read only)
.. attribute:: shadowMatrix
Matrix that converts a vector in camera space to shadow buffer depth space.
Computed as:
mat4_perspective_to_depth * mat4_lamp_to_perspective * mat4_world_to_lamp * mat4_cam_to_world.
mat4_perspective_to_depth is a fixed matrix defined as follow:
0.5 0.0 0.0 0.5
0.0 0.5 0.0 0.5
0.0 0.0 0.5 0.5
0.0 0.0 0.0 1.0
.. note:
There is one matrix of that type per lamp casting shadow in the scene.
:type: Matrix4x4 (read only)
.. attribute:: distance
The maximum distance this light can illuminate. (SPOT and NORMAL lights only).
:type: float
.. attribute:: color
The color of this light. Black = [0.0, 0.0, 0.0], White = [1.0, 1.0, 1.0].
:type: list [r, g, b]
.. attribute:: lin_attenuation
The linear component of this light's attenuation. (SPOT and NORMAL lights only).
:type: float
.. attribute:: quad_attenuation
The quadratic component of this light's attenuation (SPOT and NORMAL lights only).
:type: float
.. attribute:: spotsize
The cone angle of the spot light, in degrees (SPOT lights only).
:type: float in [0 - 180].
.. attribute:: spotblend
Specifies the intensity distribution of the spot light (SPOT lights only).
:type: float in [0 - 1]
.. note::
Higher values result in a more focused light source.
|
