EntropyCanvas::Light

EntropyCanvas::Light

Light component for scene illumination. More…

#include <Light.h>

Public Functions

	Name
Light	spot(float coneAngle, float intensity =1.0f, glm::vec3 color =glm::vec3(1.0f)) Create spot light (sphere with shaping).
Light	sphereArea(float radius, float intensity =1.0f, glm::vec3 color =glm::vec3(1.0f)) Create sphere light with radius (area light).
Light	sphere(float intensity =1.0f, glm::vec3 color =glm::vec3(1.0f)) Create default sphere/point light.
Light	distant(float intensity =1.0f, glm::vec3 color =glm::vec3(1.0f)) Create distant/directional light (sun-like).
	ENTROPY_REGISTER_TYPE(Light )
	ENTROPY_FIELD_EXTENSION(float , range )
	ENTROPY_FIELD_EXTENSION(float , bounceFactor )
	ENTROPY_FIELD_EXTENSION(bool , castsShadows )
	ENTROPY_FIELD_EXTENSION(uint32_t , shadowResolution )
	ENTROPY_FIELD_EXTENSION(uint32_t , shadowCascadeCount )
	ENTROPY_FIELD(LightType , lightType )
	ENTROPY_FIELD(glm::vec3 , color )
	ENTROPY_FIELD(float , intensity )
virtual	ENTROPY_FIELD(float , exposure ) =0
	ENTROPY_FIELD(bool , enableColorTemperature )
	ENTROPY_FIELD(float , colorTemperature )
	ENTROPY_FIELD(float , diffuse )
	ENTROPY_FIELD(float , specular )
	ENTROPY_FIELD(bool , normalize )
virtual	ENTROPY_FIELD(float , radius ) =0
virtual	ENTROPY_FIELD(float , angle ) =0
	ENTROPY_FIELD(float , shapingConeAngle )
virtual	ENTROPY_FIELD(float , shapingConeSoftness ) =0
virtual	ENTROPY_FIELD(float , shapingFocus ) =0
	ENTROPY_FIELD(glm::vec3 , shapingFocusTint )

Public Attributes

	Name
	ENTROPY_SKIP_USD_SCHEMA

Detailed Description

struct EntropyCanvas::Light;

Light component for scene illumination.

Aligned with USD Lux schema (https://openusd.org/release/api/usd_lux_page_front.html).

• Sphere lights: Point/area lights with radius; use ShapingAPI fields for spot behavior
• Distant lights: Directional lights with angular size

Properties are individually addressable via PropertyRegistry for efficient network synchronization (using ENTROPY_FIELD macros).

Direction is derived from the entity’s Transform component.

Public Functions Documentation

function spot

static inline Light spot(
    float coneAngle,
    float intensity =1.0f,
    glm::vec3 color =glm::vec3(1.0f)
)

Create spot light (sphere with shaping).

function sphereArea

static inline Light sphereArea(
    float radius,
    float intensity =1.0f,
    glm::vec3 color =glm::vec3(1.0f)
)

Create sphere light with radius (area light).

function sphere

static inline Light sphere(
    float intensity =1.0f,
    glm::vec3 color =glm::vec3(1.0f)
)

Create default sphere/point light.

function distant

static inline Light distant(
    float intensity =1.0f,
    glm::vec3 color =glm::vec3(1.0f)
)

Create distant/directional light (sun-like).

function ENTROPY_REGISTER_TYPE

ENTROPY_REGISTER_TYPE(
    Light
)

function ENTROPY_FIELD_EXTENSION

ENTROPY_FIELD_EXTENSION(
    float ,
    range
)

function ENTROPY_FIELD_EXTENSION

ENTROPY_FIELD_EXTENSION(
    float ,
    bounceFactor
)

function ENTROPY_FIELD_EXTENSION

ENTROPY_FIELD_EXTENSION(
    bool ,
    castsShadows
)

function ENTROPY_FIELD_EXTENSION

ENTROPY_FIELD_EXTENSION(
    uint32_t ,
    shadowResolution
)

function ENTROPY_FIELD_EXTENSION

ENTROPY_FIELD_EXTENSION(
    uint32_t ,
    shadowCascadeCount
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    LightType ,
    lightType
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    glm::vec3 ,
    color
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    float ,
    intensity
)

function ENTROPY_FIELD

virtual ENTROPY_FIELD(
    float ,
    exposure
) =0

function ENTROPY_FIELD

ENTROPY_FIELD(
    bool ,
    enableColorTemperature
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    float ,
    colorTemperature
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    float ,
    diffuse
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    float ,
    specular
)

function ENTROPY_FIELD

ENTROPY_FIELD(
    bool ,
    normalize
)

function ENTROPY_FIELD

virtual ENTROPY_FIELD(
    float ,
    radius
) =0

function ENTROPY_FIELD

virtual ENTROPY_FIELD(
    float ,
    angle
) =0

function ENTROPY_FIELD

ENTROPY_FIELD(
    float ,
    shapingConeAngle
)

function ENTROPY_FIELD

virtual ENTROPY_FIELD(
    float ,
    shapingConeSoftness
) =0

function ENTROPY_FIELD

virtual ENTROPY_FIELD(
    float ,
    shapingFocus
) =0

function ENTROPY_FIELD

ENTROPY_FIELD(
    glm::vec3 ,
    shapingFocusTint
)

Public Attributes Documentation

variable ENTROPY_SKIP_USD_SCHEMA

ENTROPY_SKIP_USD_SCHEMA;

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Updated on 2026-01-26 at 17:14:35 -0500