j "dZddlZddlmZmZmZddlmZm Z m Z m Z ejgdejZGdd ejZGd d eZGd d eZGddeZde eeee e ffdZy)z lighting.py -------------- Hold basic information about lights. Forked from the light model in `pyrender`: https://github.com/mmatl/pyrender N)transformationsutilvisual)ListNDArrayTuplefloat64)<r r )dtypeceZdZdZd dZedZejdZedZejdZedZ e jd Z y) Lighta Base class for all light objects. Attributes ---------- name : str, optional Name of the light. color : (4,) uint8 RGBA value for the light's color in linear space. intensity : float Brightness of light. The units that this is defined in depend on the type of light: point and spot lights use luminous intensity in candela (lm/sr) while directional lights use illuminance in lux (lm/m2). radius : float Cutoff distance at which light's intensity may be considered to have reached zero. Supported only for point and spot lights Must be > 0.0 If None, the radius is assumed to be infinite. Nc|,dtjdj|_n||_||_||_||_y)Nlight_)r unique_iduppernamecolor intensityradius)selfrrrrs C/DATA/.local/lib/python3.12/site-packages/trimesh/scene/lighting.py__init__zLight.__init__*sF < !2!8!8!: ; 0. If None, the radius is assumed to be infinite. c,t|||||yN)rrrrsuperrrrrrr __class__s rrzDirectionalLight.__init__y d%9VTrr2r3r4r5r6r __classcell__rAs@rr;r;^s4UUrr;c$eZdZdZdfd ZxZS) PointLightaV Point lights emit light in all directions from their position in space; rotation and scale are ignored except for their effect on the inherited node position. The brightness of the light attenuates in a physically correct manner as distance increases from the light's position (i.e. brightness goes like the inverse square of the distance). Point light intensity is defined in candela, which is lumens per square radian (lm/sr). Attributes ---------- name : str, optional Name of the light. color : (4,) uint8 RGBA value for the light's color in linear space. intensity : float Brightness of light. The units that this is defined in depend on the type of light. point and spot lights use luminous intensity in candela (lm/sr), while directional lights use illuminance in lux (lm/m2). radius : float Cutoff distance at which light's intensity may be considered to have reached zero. Supported only for point and spot lights, must be > 0. If None, the radius is assumed to be infinite. c,t|||||yr=r>r@s rrzPointLight.__init__rBrr2rCrEs@rrGrG}s2UUrrGceZdZdZdddddej dz ffd ZedZejdZedZ e jd Z xZ S) SpotLighta  Spot lights emit light in a cone in the direction of the local -z axis. The angle and falloff of the cone is defined using two numbers, the `innerConeAngle` and `outerConeAngle`. As with point lights, the brightness also attenuates in a physically correct manner as distance increases from the light's position (i.e. brightness goes like the inverse square of the distance). Spot light intensity refers to the brightness inside the `innerConeAngle` (and at the location of the light) and is defined in candela, which is lumens per square radian (lm/sr). A spot light's position and orientation are inherited from its node transform. Inherited scale does not affect cone shape, and is ignored except for its effect on position and orientation. Attributes ---------- name : str, optional Name of the light. color : (4,) uint8 RGBA value for the light's color in linear space. intensity : float Brightness of light. The units that this is defined in depend on the type of light. point and spot lights use luminous intensity in candela (lm/sr), while directional lights use illuminance in lux (lm/m2). radius : float Cutoff distance at which light's intensity may be considered to have reached zero. Supported only for point and spot lights, must be > 0. If None, the radius is assumed to be infinite. innerConeAngle : float Angle, in radians, from centre of spotlight where falloff begins. Must be greater than or equal to `0` and less than `outerConeAngle`. outerConeAngle : float Angle, in radians, from centre of spotlight where falloff ends. Must be greater than `innerConeAngle` and less than or equal to `PI / 2.0`. Nr1g@cHt|||||||_||_yr=)r?routerConeAngleinnerConeAngle)rrrrrrMrLrAs rrzSpotLight.__init__s+ d%9VT,,rc|jSr)_innerConeAngler s rrMzSpotLight.innerConeAngle###rcb|dks||jkDr tdt||_y)Nr1z"Invalid value for inner cone angle)rLr'r-rOr(s rrMzSpotLight.innerConeAngles. 3;%$"5"55AB B$U|rc|jSr)_outerConeAngler s rrLzSpotLight.outerConeAnglerPrcv|dks|tjdz dzkDr tdt||_y)Nr1g@g& .>z"Invalid value for outer cone angle)nppir'r-rSr(s rrLzSpotLight.outerConeAngles5 3;%"%%#+"44AB B$U|r) r3r4r5r6rUrVrr7rMr8rLrDrEs@rrJrJs"Luus{ -$$,, $$,,rrJreturncg}g}|j}|9|jd|D|jdtdD||fS)aH Generate a list of lights for a scene that looks decent. Parameters -------------- scene : trimesh.Scene Scene with geometry Returns -------------- lights : [Light] List of light objects transforms : (len(lights), 4, 4) float Transformation matrices for light positions. c3FK|]}tj|ywr)rtranslation_matrix).0bs r zautolight..sPA/<.s5HqjlHsr)boundsextendrange)scenelights transformsr`s r autolightrfsT$FJ\\F PPP 5E!H55 : r)r6numpyrUrrrtypedrrr r arrayuint8r#ABCrr;rGrJrfr9rrrms,,11*"((; G(DHHG(TUuU>UU