2022-03-15 13:29:32 +01:00
<?xml version="1.0" encoding="UTF-8" ?>
2024-04-26 17:32:25 +02:00
<class name= "ParticlesMaterial" inherits= "Material" version= "4.4" >
2022-03-15 13:29:32 +01:00
<brief_description >
Particle properties for [Particles] and [Particles2D] nodes.
</brief_description>
<description >
ParticlesMaterial defines particle properties and behavior. It is used in the [code]process_material[/code] of [Particles] and [Particles2D] emitter nodes.
Some of this material's properties are applied to each particle when emitted, while others can have a [CurveTexture] applied to vary values over the lifetime of the particle.
When a randomness ratio is applied to a property it is used to scale that property by a random amount. The random ratio is used to interpolate between [code]1.0[/code] and a random number less than one, the result is multiplied by the property to obtain the randomized property. For example a random ratio of [code]0.4[/code] would scale the original property between [code]0.4-1.0[/code] of its original value.
</description>
<tutorials >
</tutorials>
<methods >
<method name= "get_flag" qualifiers= "const" >
<return type= "bool" />
<argument index= "0" name= "flag" type= "int" enum= "ParticlesMaterial.Flags" />
<description >
Returns [code]true[/code] if the specified flag is enabled.
</description>
</method>
<method name= "get_param" qualifiers= "const" >
<return type= "float" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<description >
Returns the value of the specified parameter.
</description>
</method>
<method name= "get_param_randomness" qualifiers= "const" >
<return type= "float" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<description >
Returns the randomness ratio associated with the specified parameter.
</description>
</method>
<method name= "get_param_texture" qualifiers= "const" >
<return type= "Texture" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<description >
Returns the [Texture] used by the specified parameter.
</description>
</method>
<method name= "set_flag" >
<return type= "void" />
<argument index= "0" name= "flag" type= "int" enum= "ParticlesMaterial.Flags" />
<argument index= "1" name= "enable" type= "bool" />
<description >
If [code]true[/code], enables the specified flag. See [enum Flags] for options.
</description>
</method>
<method name= "set_param" >
<return type= "void" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<argument index= "1" name= "value" type= "float" />
<description >
Sets the specified [enum Parameter].
</description>
</method>
<method name= "set_param_randomness" >
<return type= "void" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<argument index= "1" name= "randomness" type= "float" />
<description >
Sets the randomness ratio for the specified [enum Parameter].
</description>
</method>
<method name= "set_param_texture" >
<return type= "void" />
<argument index= "0" name= "param" type= "int" enum= "ParticlesMaterial.Parameter" />
<argument index= "1" name= "texture" type= "Texture" />
<description >
Sets the [Texture] for the specified [enum Parameter].
</description>
</method>
</methods>
<members >
<member name= "angle" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Initial rotation applied to each particle, in degrees.
[b]Note:[/b] Only applied when [member flag_disable_z] or [member flag_rotate_y] are [code]true[/code] or the [SpatialMaterial] being used to draw the particle is using [constant SpatialMaterial.BILLBOARD_PARTICLES].
</member>
<member name= "angle_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's rotation will be animated along this [CurveTexture].
</member>
<member name= "angle_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Rotation randomness ratio.
</member>
<member name= "angular_velocity" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Initial angular velocity applied to each particle in [i]degrees[/i] per second. Sets the speed of rotation of the particle.
[b]Note:[/b] Only applied when [member flag_disable_z] or [member flag_rotate_y] are [code]true[/code] or the [SpatialMaterial] being used to draw the particle is using [constant SpatialMaterial.BILLBOARD_PARTICLES].
</member>
<member name= "angular_velocity_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's angular velocity will vary along this [CurveTexture].
</member>
<member name= "angular_velocity_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Angular velocity randomness ratio.
</member>
<member name= "anim_offset" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Particle animation offset.
</member>
<member name= "anim_offset_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's animation offset will vary along this [CurveTexture].
</member>
<member name= "anim_offset_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Animation offset randomness ratio.
</member>
<member name= "anim_speed" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Particle animation speed.
</member>
<member name= "anim_speed_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's animation speed will vary along this [CurveTexture].
</member>
<member name= "anim_speed_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Animation speed randomness ratio.
</member>
<member name= "color" type= "Color" setter= "set_color" getter= "get_color" default= "Color( 1, 1, 1, 1 )" >
Each particle's initial color. If the [Particles2D]'s [code]texture[/code] is defined, it will be multiplied by this color. To have particle display color in a [SpatialMaterial] make sure to set [member SpatialMaterial.vertex_color_use_as_albedo] to [code]true[/code].
</member>
<member name= "color_initial_ramp" type= "Texture" setter= "set_color_initial_ramp" getter= "get_color_initial_ramp" >
Each particle's initial color will vary along this [GradientTexture] (multiplied with [member color]).
</member>
<member name= "color_ramp" type= "Texture" setter= "set_color_ramp" getter= "get_color_ramp" >
Each particle's color will vary along this [GradientTexture] over its lifetime (multiplied with [member color]).
</member>
<member name= "damping" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
The rate at which particles lose velocity.
</member>
<member name= "damping_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Damping will vary along this [CurveTexture].
</member>
<member name= "damping_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Damping randomness ratio.
</member>
<member name= "direction" type= "Vector3" setter= "set_direction" getter= "get_direction" default= "Vector3( 1, 0, 0 )" >
Unit vector specifying the particles' emission direction.
</member>
<member name= "emission_box_extents" type= "Vector3" setter= "set_emission_box_extents" getter= "get_emission_box_extents" >
The box's extents if [code]emission_shape[/code] is set to [constant EMISSION_SHAPE_BOX].
</member>
<member name= "emission_color_texture" type= "Texture" setter= "set_emission_color_texture" getter= "get_emission_color_texture" >
Particle color will be modulated by color determined by sampling this texture at the same point as the [member emission_point_texture].
</member>
<member name= "emission_normal_texture" type= "Texture" setter= "set_emission_normal_texture" getter= "get_emission_normal_texture" >
Particle velocity and rotation will be set by sampling this texture at the same point as the [member emission_point_texture]. Used only in [constant EMISSION_SHAPE_DIRECTED_POINTS]. Can be created automatically from mesh or node by selecting "Create Emission Points from Mesh/Node" under the "Particles" tool in the toolbar.
</member>
<member name= "emission_point_count" type= "int" setter= "set_emission_point_count" getter= "get_emission_point_count" >
The number of emission points if [code]emission_shape[/code] is set to [constant EMISSION_SHAPE_POINTS] or [constant EMISSION_SHAPE_DIRECTED_POINTS].
</member>
<member name= "emission_point_texture" type= "Texture" setter= "set_emission_point_texture" getter= "get_emission_point_texture" >
Particles will be emitted at positions determined by sampling this texture at a random position. Used with [constant EMISSION_SHAPE_POINTS] and [constant EMISSION_SHAPE_DIRECTED_POINTS]. Can be created automatically from mesh or node by selecting "Create Emission Points from Mesh/Node" under the "Particles" tool in the toolbar.
</member>
<member name= "emission_ring_axis" type= "Vector3" setter= "set_emission_ring_axis" getter= "get_emission_ring_axis" >
The axis of the ring when using the emitter [constant EMISSION_SHAPE_RING].
</member>
<member name= "emission_ring_height" type= "float" setter= "set_emission_ring_height" getter= "get_emission_ring_height" >
The height of the ring when using the emitter [constant EMISSION_SHAPE_RING].
</member>
<member name= "emission_ring_inner_radius" type= "float" setter= "set_emission_ring_inner_radius" getter= "get_emission_ring_inner_radius" >
The inner radius of the ring when using the emitter [constant EMISSION_SHAPE_RING].
</member>
<member name= "emission_ring_radius" type= "float" setter= "set_emission_ring_radius" getter= "get_emission_ring_radius" >
The radius of the ring when using the emitter [constant EMISSION_SHAPE_RING].
</member>
<member name= "emission_shape" type= "int" setter= "set_emission_shape" getter= "get_emission_shape" enum= "ParticlesMaterial.EmissionShape" default= "0" >
Particles will be emitted inside this region. Use [enum EmissionShape] constants for values.
</member>
<member name= "emission_sphere_radius" type= "float" setter= "set_emission_sphere_radius" getter= "get_emission_sphere_radius" >
The sphere's radius if [code]emission_shape[/code] is set to [constant EMISSION_SHAPE_SPHERE].
</member>
<member name= "flag_align_y" type= "bool" setter= "set_flag" getter= "get_flag" default= "false" >
Align Y axis of particle with the direction of its velocity.
</member>
<member name= "flag_disable_z" type= "bool" setter= "set_flag" getter= "get_flag" default= "false" >
If [code]true[/code], particles will not move on the z axis.
</member>
<member name= "flag_rotate_y" type= "bool" setter= "set_flag" getter= "get_flag" default= "false" >
If [code]true[/code], particles rotate around Y axis by [member angle].
</member>
<member name= "flatness" type= "float" setter= "set_flatness" getter= "get_flatness" default= "0.0" >
Amount of [member spread] along the Y axis.
</member>
<member name= "gravity" type= "Vector3" setter= "set_gravity" getter= "get_gravity" default= "Vector3( 0, -9.8, 0 )" >
Gravity applied to every particle.
</member>
<member name= "hue_variation" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Initial hue variation applied to each particle.
</member>
<member name= "hue_variation_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's hue will vary along this [CurveTexture].
</member>
<member name= "hue_variation_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Hue variation randomness ratio.
</member>
<member name= "initial_velocity" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Initial velocity magnitude for each particle. Direction comes from [member spread] and the node's orientation.
</member>
<member name= "initial_velocity_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Initial velocity randomness ratio.
</member>
<member name= "lifetime_randomness" type= "float" setter= "set_lifetime_randomness" getter= "get_lifetime_randomness" default= "0.0" >
Particle lifetime randomness ratio.
</member>
<member name= "linear_accel" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Linear acceleration applied to each particle in the direction of motion.
</member>
<member name= "linear_accel_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's linear acceleration will vary along this [CurveTexture].
</member>
<member name= "linear_accel_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Linear acceleration randomness ratio.
</member>
<member name= "orbit_velocity" type= "float" setter= "set_param" getter= "get_param" >
Orbital velocity applied to each particle. Makes the particles circle around origin. Specified in number of full rotations around origin per second.
[b]Note:[/b] Only available when [member flag_disable_z] is [code]true[/code].
</member>
<member name= "orbit_velocity_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's orbital velocity will vary along this [CurveTexture].
</member>
<member name= "orbit_velocity_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" >
Orbital velocity randomness ratio.
</member>
<member name= "radial_accel" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Radial acceleration applied to each particle. Makes particle accelerate away from origin.
</member>
<member name= "radial_accel_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's radial acceleration will vary along this [CurveTexture].
</member>
<member name= "radial_accel_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Radial acceleration randomness ratio.
</member>
<member name= "scale" type= "float" setter= "set_param" getter= "get_param" default= "1.0" >
Initial scale applied to each particle.
</member>
<member name= "scale_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's scale will vary along this [CurveTexture].
</member>
<member name= "scale_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Scale randomness ratio.
</member>
<member name= "spread" type= "float" setter= "set_spread" getter= "get_spread" default= "45.0" >
Each particle's initial direction range from [code]+spread[/code] to [code]-spread[/code] degrees.
</member>
<member name= "tangential_accel" type= "float" setter= "set_param" getter= "get_param" default= "0.0" >
Tangential acceleration applied to each particle. Tangential acceleration is perpendicular to the particle's velocity giving the particles a swirling motion.
</member>
<member name= "tangential_accel_curve" type= "Texture" setter= "set_param_texture" getter= "get_param_texture" >
Each particle's tangential acceleration will vary along this [CurveTexture].
</member>
<member name= "tangential_accel_random" type= "float" setter= "set_param_randomness" getter= "get_param_randomness" default= "0.0" >
Tangential acceleration randomness ratio.
</member>
<member name= "trail_color_modifier" type= "GradientTexture" setter= "set_trail_color_modifier" getter= "get_trail_color_modifier" >
Trail particles' color will vary along this [GradientTexture].
</member>
<member name= "trail_divisor" type= "int" setter= "set_trail_divisor" getter= "get_trail_divisor" default= "1" >
Emitter will emit [code]amount[/code] divided by [code]trail_divisor[/code] particles. The remaining particles will be used as trail(s).
</member>
<member name= "trail_size_modifier" type= "CurveTexture" setter= "set_trail_size_modifier" getter= "get_trail_size_modifier" >
Trail particles' size will vary along this [CurveTexture].
</member>
</members>
<constants >
<constant name= "PARAM_INITIAL_LINEAR_VELOCITY" value= "0" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set initial velocity properties.
</constant>
<constant name= "PARAM_ANGULAR_VELOCITY" value= "1" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set angular velocity properties.
</constant>
<constant name= "PARAM_ORBIT_VELOCITY" value= "2" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set orbital velocity properties.
</constant>
<constant name= "PARAM_LINEAR_ACCEL" value= "3" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set linear acceleration properties.
</constant>
<constant name= "PARAM_RADIAL_ACCEL" value= "4" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set radial acceleration properties.
</constant>
<constant name= "PARAM_TANGENTIAL_ACCEL" value= "5" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set tangential acceleration properties.
</constant>
<constant name= "PARAM_DAMPING" value= "6" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set damping properties.
</constant>
<constant name= "PARAM_ANGLE" value= "7" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set angle properties.
</constant>
<constant name= "PARAM_SCALE" value= "8" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set scale properties.
</constant>
<constant name= "PARAM_HUE_VARIATION" value= "9" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set hue variation properties.
</constant>
<constant name= "PARAM_ANIM_SPEED" value= "10" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set animation speed properties.
</constant>
<constant name= "PARAM_ANIM_OFFSET" value= "11" enum= "Parameter" >
Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set animation offset properties.
</constant>
<constant name= "PARAM_MAX" value= "12" enum= "Parameter" >
Represents the size of the [enum Parameter] enum.
</constant>
<constant name= "FLAG_ALIGN_Y_TO_VELOCITY" value= "0" enum= "Flags" >
Use with [method set_flag] to set [member flag_align_y].
</constant>
<constant name= "FLAG_ROTATE_Y" value= "1" enum= "Flags" >
Use with [method set_flag] to set [member flag_rotate_y].
</constant>
<constant name= "FLAG_DISABLE_Z" value= "2" enum= "Flags" >
Use with [method set_flag] to set [member flag_disable_z].
</constant>
<constant name= "FLAG_MAX" value= "3" enum= "Flags" >
Represents the size of the [enum Flags] enum.
</constant>
<constant name= "EMISSION_SHAPE_POINT" value= "0" enum= "EmissionShape" >
All particles will be emitted from a single point.
</constant>
<constant name= "EMISSION_SHAPE_SPHERE" value= "1" enum= "EmissionShape" >
Particles will be emitted in the volume of a sphere.
</constant>
<constant name= "EMISSION_SHAPE_BOX" value= "2" enum= "EmissionShape" >
Particles will be emitted in the volume of a box.
</constant>
<constant name= "EMISSION_SHAPE_POINTS" value= "3" enum= "EmissionShape" >
Particles will be emitted at a position determined by sampling a random point on the [member emission_point_texture]. Particle color will be modulated by [member emission_color_texture].
</constant>
<constant name= "EMISSION_SHAPE_DIRECTED_POINTS" value= "4" enum= "EmissionShape" >
Particles will be emitted at a position determined by sampling a random point on the [member emission_point_texture]. Particle velocity and rotation will be set based on [member emission_normal_texture]. Particle color will be modulated by [member emission_color_texture].
</constant>
<constant name= "EMISSION_SHAPE_RING" value= "5" enum= "EmissionShape" >
Particles will be emitted in a ring or cylinder.
</constant>
<constant name= "EMISSION_SHAPE_MAX" value= "6" enum= "EmissionShape" >
Represents the size of the [enum EmissionShape] enum.
</constant>
</constants>
</class>
