Light

Inherits: VisualInstance < Spatial < Node < Object

Inherited By: DirectionalLight, OmniLight, SpotLight

Category: Core

Brief Description

Provides a base class for different kinds of light nodes.

Properties

bool	editor_only
BakeMode	light_bake_mode
Color	light_color
int	light_cull_mask
float	light_energy
float	light_indirect_energy
bool	light_negative
float	light_specular
float	shadow_bias
Color	shadow_color
float	shadow_contact
bool	shadow_enabled
bool	shadow_reverse_cull_face

Enumerations

enum Param:

• PARAM_ENERGY = 0
• PARAM_INDIRECT_ENERGY = 1
• PARAM_SPECULAR = 2
• PARAM_RANGE = 3
• PARAM_ATTENUATION = 4
• PARAM_SPOT_ANGLE = 5
• PARAM_SPOT_ATTENUATION = 6
• PARAM_CONTACT_SHADOW_SIZE = 7
• PARAM_SHADOW_MAX_DISTANCE = 8
• PARAM_SHADOW_SPLIT_1_OFFSET = 9
• PARAM_SHADOW_SPLIT_2_OFFSET = 10
• PARAM_SHADOW_SPLIT_3_OFFSET = 11
• PARAM_SHADOW_NORMAL_BIAS = 12
• PARAM_SHADOW_BIAS = 13
• PARAM_SHADOW_BIAS_SPLIT_SCALE = 14
• PARAM_MAX = 15 — Represents the size of the Param enum.

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enum BakeMode:

• BAKE_DISABLED = 0 — Light is ignored when baking. Note: hiding a light does not affect baking.
• BAKE_INDIRECT = 1 — Only indirect lighting will be baked. Default value.
• BAKE_ALL = 2 — Both direct and indirect light will be baked. Note: you should hide the light if you don’t want it to appear twice (dynamic and baked).

Description

Light is the abstract base class for light nodes, so it shouldn’t be used directly (It can’t be instanced). Other types of light nodes inherit from it. Light contains the common variables and parameters used for lighting.

Tutorials

• Lights and shadows

Property Descriptions

• bool editor_only

Setter	set_editor_only(value)
Getter	is_editor_only()

If true, the light only appears in the editor and will not be visible at runtime. Default value:false.

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• BakeMode light_bake_mode

Setter	set_bake_mode(value)
Getter	get_bake_mode()

The light’s bake mode. See BakeMode.

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• Color light_color

Setter	set_color(value)
Getter	get_color()

The light’s color.

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• int light_cull_mask

Setter	set_cull_mask(value)
Getter	get_cull_mask()

The light will affect objects in the selected layers.

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• float light_energy

Setter	set_param(value)
Getter	get_param()

The light’s strength multiplier.

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• float light_indirect_energy

Setter	set_param(value)
Getter	get_param()

Secondary multiplier used with indirect light (light bounces). This works in baked light or GIProbe.

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• bool light_negative

Setter	set_negative(value)
Getter	is_negative()

If true, the light’s effect is reversed, darkening areas and casting bright shadows. Default value: false.

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• float light_specular

Setter	set_param(value)
Getter	get_param()

The intensity of the specular blob in objects affected by the light. At 0 the light becomes a pure diffuse light.

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• float shadow_bias

Setter	set_param(value)
Getter	get_param()

Used to adjust shadow appearance. Too small a value results in self shadowing, while too large a value causes shadows to separate from casters. Adjust as needed.

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• Color shadow_color

Setter	set_shadow_color(value)
Getter	get_shadow_color()

The color of shadows cast by this light.

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• float shadow_contact

Setter	set_param(value)
Getter	get_param()

Attempts to reduce shadow_bias gap.

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• bool shadow_enabled

Setter	set_shadow(value)
Getter	has_shadow()

If true, the light will cast shadows. Default value: false.

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• bool shadow_reverse_cull_face

Setter	set_shadow_reverse_cull_face(value)
Getter	get_shadow_reverse_cull_face()