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Light2D¶

Inherits: Node2D < CanvasItem < Node < Object

Inherited By: DirectionalLight2D, PointLight2D

Casts light in a 2D environment.

描述¶

Casts light in a 2D environment. A light is defined as a color, an energy value, a mode (see constants), and various other parameters (range and shadows-related).

教程¶

2D lights and shadows

属性¶

BlendMode	blend_mode	`0`
Color	color	`Color(1, 1, 1, 1)`
bool	editor_only	`false`
bool	enabled	`true`
float	energy	`1.0`
int	range_item_cull_mask	`1`
int	range_layer_max	`0`
int	range_layer_min	`0`
int	range_z_max	`1024`
int	range_z_min	`-1024`
Color	shadow_color	`Color(0, 0, 0, 0)`
bool	shadow_enabled	`false`
ShadowFilter	shadow_filter	`0`
float	shadow_filter_smooth	`0.0`
int	shadow_item_cull_mask	`1`

Methods¶

float	get_height ( ) const
void	set_height ( float height )

Enumerations¶

enum ShadowFilter:

ShadowFilter SHADOW_FILTER_NONE = 0

No filter applies to the shadow map. This provides hard shadow edges and is the fastest to render. See shadow_filter.

ShadowFilter SHADOW_FILTER_PCF5 = 1

Percentage closer filtering (5 samples) applies to the shadow map. This is slower compared to hard shadow rendering. See shadow_filter.

ShadowFilter SHADOW_FILTER_PCF13 = 2

Percentage closer filtering (13 samples) applies to the shadow map. This is the slowest shadow filtering mode, and should be used sparingly. See shadow_filter.

enum BlendMode:

BlendMode BLEND_MODE_ADD = 0

Adds the value of pixels corresponding to the Light2D to the values of pixels under it. This is the common behavior of a light.

BlendMode BLEND_MODE_SUB = 1

Subtracts the value of pixels corresponding to the Light2D to the values of pixels under it, resulting in inversed light effect.

BlendMode BLEND_MODE_MIX = 2

Mix the value of pixels corresponding to the Light2D to the values of pixels under it by linear interpolation.

Property Descriptions¶

BlendMode blend_mode = 0

void set_blend_mode ( BlendMode value )
BlendMode get_blend_mode ( )

The Light2D's blend mode. See BlendMode constants for values.

Color color = Color(1, 1, 1, 1)

void set_color ( Color value )
Color get_color ( )

The Light2D's Color.

bool editor_only = false

void set_editor_only ( bool value )
bool is_editor_only ( )

If true, Light2D will only appear when editing the scene.

bool enabled = true

void set_enabled ( bool value )
bool is_enabled ( )

If true, Light2D will emit light.

float energy = 1.0

void set_energy ( float value )
float get_energy ( )

The Light2D's energy value. The larger the value, the stronger the light.

int range_item_cull_mask = 1

void set_item_cull_mask ( int value )
int get_item_cull_mask ( )

The layer mask. Only objects with a matching CanvasItem.light_mask will be affected by the Light2D. See also shadow_item_cull_mask, which affects which objects can cast shadows.

Note: range_item_cull_mask is ignored by DirectionalLight2D, which will always light a 2D node regardless of the 2D node's CanvasItem.light_mask.

int range_layer_max = 0

void set_layer_range_max ( int value )
int get_layer_range_max ( )

Maximum layer value of objects that are affected by the Light2D.

int range_layer_min = 0

void set_layer_range_min ( int value )
int get_layer_range_min ( )

Minimum layer value of objects that are affected by the Light2D.

int range_z_max = 1024

void set_z_range_max ( int value )
int get_z_range_max ( )

Maximum z value of objects that are affected by the Light2D.

int range_z_min = -1024

void set_z_range_min ( int value )
int get_z_range_min ( )

Minimum z value of objects that are affected by the Light2D.

Color shadow_color = Color(0, 0, 0, 0)

void set_shadow_color ( Color value )
Color get_shadow_color ( )

Color of shadows cast by the Light2D.

bool shadow_enabled = false

void set_shadow_enabled ( bool value )
bool is_shadow_enabled ( )

If true, the Light2D will cast shadows.

ShadowFilter shadow_filter = 0

void set_shadow_filter ( ShadowFilter value )
ShadowFilter get_shadow_filter ( )

Shadow filter type. See ShadowFilter for possible values.

float shadow_filter_smooth = 0.0

void set_shadow_smooth ( float value )
float get_shadow_smooth ( )

Smoothing value for shadows. Higher values will result in softer shadows, at the cost of visible streaks that can appear in shadow rendering. shadow_filter_smooth only has an effect if shadow_filter is SHADOW_FILTER_PCF5 or SHADOW_FILTER_PCF13.

int shadow_item_cull_mask = 1

void set_item_shadow_cull_mask ( int value )
int get_item_shadow_cull_mask ( )

The shadow mask. Used with LightOccluder2D to cast shadows. Only occluders with a matching CanvasItem.light_mask will cast shadows. See also range_item_cull_mask, which affects which objects can receive the light.

Method Descriptions¶

float get_height ( ) const

Returns the light's height, which is used in 2D normal mapping. See PointLight2D.height and DirectionalLight2D.height.

void set_height ( float height )

Sets the light's height, which is used in 2D normal mapping. See PointLight2D.height and DirectionalLight2D.height.